| 
							
      					 | 
  					 
  					
    					 | 
   					 
   										
    					Efficient acetylene/carbon dioxide separation with excellent dynamic capacity and low regeneration energy by anion-pillared hybrid materials  | 
  					 
  					  										
						Yijian Li1, Jianbo Hu2, Jiyu Cui1, Qingju Wang1, Huabin Xing1,2, Xili Cui1,2( ) | 
					 
															
						1. Zhejiang Key Laboratory of Smart Biomaterials, Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China 2. ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou 311215, China | 
					 
										
						 | 
					 
				 
				
				
					
						
							
								
									
		
		 
          
          
            
              
				
								                
													
													    | 
													    	
														 | 
													 
													
													
													
														
															
													
													    | 
													     		                            						                            																	    Abstract  Adsorptive separation of acetylene/carbon dioxide mixtures by porous materials is an important and challenging task due to their similar sizes and physical properties. Here, remarkable acetylene/carbon dioxide separation featuring a high dynamic breakthrough capacity for acetylene (4.3 mmol·g–1) as well as an ultralow acetylene regeneration energy (29.5 kJ·mol–1) was achieved with the novel TiF62–-pillared material ZU-100 (TIFSIX-bpy-Ni). Construction of a pore structure with abundant TiF62– anion sites and pores with appropriate sizes enabled formation of acetylene clusters through hydrogen bonds and intermolecular interactions, which afforded a high acetylene capacity (8.3 mmol·g–1) and high acetylene/carbon dioxide uptake ratio (1.9) at 298 K and 1 bar. Moreover, the NbO52– anion-pillared material ZU-61 investigated for separation of acetylene/carbon dioxide. In addition, breakthrough experiments were also conducted to further confirm the excellent dynamic acetylene/carbon dioxide separation performance of ZU-100.  
																										     | 
														 
																												
												        														
															| Keywords 
																																																				adsorption  
																		  																																				acetylene/carbon dioxide separation  
																		  																																				dynamic capacity  
																		  																																				anion-pillared hybrid material  
																																			  
															 | 
														 
																												
														 																											    														
															| 
																																Corresponding Author(s):
																Xili Cui   
																													     		
													     	 | 
														 
																																										
															| 
																																														Online First Date: 01 August 2022   
																																														Issue Date: 13 December 2022
																														 | 
														 
														 
                                                         | 
														 
														 
														
														
														
												 
												
												
                                                    
													
								             
                                             
            
					            
								            								            
								            								                                                        
								            
								                
																																												
															| 1 | 
															 
														      A Luna-Triguero, J M Vicent-Luna, R M Madero-Castro, P Gomez-Alvarez, S Calero. Acetylene storage and separation using metal-organic frameworks with open metal sites. ACS Applied Materials & Interfaces, 2019, 11( 34): 31499– 31507 
														     														     	 
														     															     		https://doi.org/10.1021/acsami.9b09010
														     															     															     															 | 
																  
																														
															| 2 | 
															 
														      R Matsuda, R Kitaura, S Kitagawa, Y Kubota, R V Belosludov, T Kobayashi, H Sakamoto, T Chiba, M Takata, Y Kawazoe, Y Mita. Highly controlled acetylene accommodation in a metal−organic microporous material. Nature, 2005, 436( 7048): 238– 241 
														     														     	 
														     															     		https://doi.org/10.1038/nature03852
														     															     															     															 | 
																  
																														
															| 3 | 
															 
														      S Xiang, W Zhou, J M Gallegos, Y Liu, B L Chen. Exceptionally high acetylene uptake in a microporous metal−organic framework with open metal sites. Journal of the American Chemical Society, 2009, 131( 34): 12415– 12419 
														     														     	 
														     															     		https://doi.org/10.1021/ja904782h
														     															     															     															 | 
																  
																														
															| 4 | 
															 
														      M L Foo, R Matsuda, Y Hijikata, R Krishna, H Sato, S Horike, A Hori, J Duan, Y Sato, Y Kubota, M Takata, S Kitagawa. An adsorbate discriminatory gate effect in a flexible porous coordination polymer for selective adsorption of CO2 over C2H2. Journal of the American Chemical Society, 2016, 138( 9): 3022– 3030 
														     														     	 
														     															     		https://doi.org/10.1021/jacs.5b10491
														     															     															     															 | 
																  
																														
															| 5 | 
															 
														      Y Peng, T Pham, P Li, T Wang, Y Chen, K J Chen, K A Forrest, B Space, P Cheng, M J Zaworotko, Z Zhang. Robust ultramicroporous metal−organic frameworks with benchmark affinity for acetylene. Angewandte Chemie International Edition, 2018, 57( 34): 10971– 10975 
														     														     	 
														     															     		https://doi.org/10.1002/anie.201806732
														     															     															     															 | 
																  
																														
															| 6 | 
															 
														      Z Yao, Z Zhang, L Liu, Z Li, W Zhou, Y Zhao, Y Han, B Chen, R Krishna, S Xiang. Extraordinary separation of acetylene-containing mixtures with microporous metal−organic frameworks with open O donor sites and tunable robustness through control of the helical chain secondary building units. Chemistry, 2016, 22( 16): 5676– 5683 
														     														     	 
														     															     		https://doi.org/10.1002/chem.201505107
														     															     															     															 | 
																  
																														
															| 7 | 
															 
														      H S Scott, M Shivanna, A Bajpai, D G Madden, K J Chen, T Pham, K A Forrest, A Hogan, B Space, J J IV Perry, M J Zaworotko. Highly selective separation of C2H2 from CO2 by a new dichromate-based hybrid ultramicroporous material. ACS Applied Materials & Interfaces, 2017, 9( 39): 33395– 33400 
														     														     	 
														     															     		https://doi.org/10.1021/acsami.6b15250
														     															     															     															 | 
																  
																														
															| 8 | 
															 
														      P Li, Y He, Y Zhao, L Weng, H Wang, R Krishna, H Wu, W Zhou, M O’Keeffe, Y Han, B Chen. A rod-packing microporous hydrogen-bonded organic framework for highly selective separation of C2H2/CO2 at room temperature. Angewandte Chemie International Edition, 2015, 54( 2): 574– 577
														     															 | 
																  
																														
															| 9 | 
															 
														      L Zhang, K Jiang, J Zhang, J Pei, K Shao, Y Cui, Y Yang, B Li, B Chen, G Qian. Low-cost and high-performance microporous metal−organic framework for separation of acetylene from carbon dioxide. ACS Sustainable Chemistry & Engineering, 2019, 7( 1): 1667– 1672 
														     														     	 
														     															     		https://doi.org/10.1021/acssuschemeng.8b05431
														     															     															     															 | 
																  
																														
															| 10 | 
															 
														      J Zhang, X Chen. Optimized acetylene/carbon dioxide sorption in a dynamic porous crystal. Journal of the American Chemical Society, 2009, 131( 15): 5516– 5521 
														     														     	 
														     															     		https://doi.org/10.1021/ja8089872
														     															     															     															 | 
																  
																														
															| 11 | 
															 
														      O Qazvini, R Babarao, S Telfer. Multipurpose metal-organic framework for the adsorption of acetylene: ethylene purification and carbon dioxide removal. Chemistry of Materials, 2019, 31( 13): 4919– 4926 
														     														     	 
														     															     		https://doi.org/10.1021/acs.chemmater.9b01691
														     															     															     															 | 
																  
																														
															| 12 | 
															 
														      F Moreau, I da Silva, N Al Smail, T Easun, M Savage, M Godfrey, S Parker, P Manuel, S Yang, M Schroder. Unravelling exceptional acetylene and carbon dioxide adsorption within a tetra-amide functionalized metal−organic framework. Nature Communications, 2017, 8( 1): 14085 
														     														     	 
														     															     		https://doi.org/10.1038/ncomms14085
														     															     															     															 | 
																  
																														
															| 13 | 
															 
														      Y Zhang, J Hu, R Krishna, L Wang, L Yang, X Cui, S Duttwyler, H Xing. Rational design of microporous MOFs with anionic boron cluster functionality and cooperative dihydrogen binding sites for highly selective capture of acetylene. Angewandte Chemie International Edition, 2020, 59( 40): 17664– 17669 
														     														     	 
														     															     		https://doi.org/10.1002/anie.202007681
														     															     															     															 | 
																  
																														
															| 14 | 
															 
														      R Liu, Q Liu, R Krishna, W Wang, C He, Y Wang. Water-stable europium 1,3,6,8-tetrakis(4-carboxylphenyl)pyrene framework for efficient C2H2/CO2 separation. Inorganic Chemistry, 2019, 58( 8): 5089– 5095 
														     														     	 
														     															     		https://doi.org/10.1021/acs.inorgchem.9b00169
														     															     															     															 | 
																  
																														
															| 15 | 
															 
														      Y Xie, H Cui, H Wu, R Lin, W Zhou, B Chen. Electrostatically driven selective adsorption of carbon dioxide over acetylene in an ultramicroporous material. Angewandte Chemie International Edition, 2021, 60( 17): 9604– 9609 
														     														     	 
														     															     		https://doi.org/10.1002/anie.202100584
														     															     															     															 | 
																  
																														
															| 16 | 
															 
														      J Wang, Y Zhang, Y Su, X Liu, P Zhang, R Lin, S Chen, Q Deng, Z Zeng, S Deng, B Chen. Fine pore engineering in a series of isoreticular metal−organic frameworks for efficient C2H2/CO2 separation. Nature Communications, 2022, 13( 1): 200 
														     														     	 
														     															     		https://doi.org/10.1038/s41467-021-27929-7
														     															     															     															 | 
																  
																														
															| 17 | 
															 
														      O Qazvini, R Babarao, S Telfer. Selective capture of carbon dioxide from hydrocarbons using a metal−organic framework. Nature Communications, 2021, 12( 1): 197 
														     														     	 
														     															     		https://doi.org/10.1038/s41467-020-20489-2
														     															     															     															 | 
																  
																														
															| 18 | 
															 
														      D Choi, D Kim, D Kang, M Kang, Y Chae, C Hong. Highly selective CO2 separation from a CO2/C2H2 mixture using a diamine-appended metal−organic framework. Angewandte Chemie International Edition, 2021, 9( 37): 21424– 21428
														     															 | 
																  
																														
															| 19 | 
															 
														      Y Shi, Y Xie, H Cui, Y Ye, H Wu, W Zhou, H Arman, R Lin, B Chen. Highly selective adsorption of carbon dioxide over acetylene in an ultramicroporous metal−organic framework. Advanced Materials, 2021, 33( 45): 2105880 
														     														     	 
														     															     		https://doi.org/10.1002/adma.202105880
														     															     															     															 | 
																  
																														
															| 20 | 
															 
														      Y Ye, S Xian, H Cui, K Tan, L Gong, B Liang, T Pham, H Pandey, R Krishna, P Lan, K A Forrest, B Space, T Thonhauser, J Li, S Ma. Metal−organic framework based hydrogen-bonding nanotrap for efficient acetylene storage and separation. Journal of the American Chemical Society, 2022, 144( 4): 1681– 1689 
														     														     	 
														     															     		https://doi.org/10.1021/jacs.1c10620
														     															     															     															 | 
																  
																														
															| 21 | 
															 
														      Q Dong, X Zhang, S Liu, R Lin, Y Guo, Y Ma, A Yonezu, R Krishna, G Liu, J Duan, R Matsuda, W Jin, B Chen. Tuning gate-opening of a flexible metal−organic framework for ternary gas sieving separation. Angewandte Chemie International Edition, 2020, 59( 50): 22756– 22762 
														     														     	 
														     															     		https://doi.org/10.1002/anie.202011802
														     															     															     															 | 
																  
																														
															| 22 | 
															 
														      W Fan, S Yuan, W Wang, L Feng, X Liu, X Zhang, X Wang, Z Kang, F Dai, D Yuan, D Sun, H C Zhou. Optimizing multivariate metal−organic frameworks for efficient C2H2/CO2 separation. Journal of the American Chemical Society, 2020, 142( 19): 8728– 8737 
														     														     	 
														     															     		https://doi.org/10.1021/jacs.0c00805
														     															     															     															 | 
																  
																														
															| 23 | 
															 
														      J Pei, K Shao, J Wang, H Wen, Y Yang, Y Cui, R Krishna, B Li, G Qian. A chemically stable hofmann-type metal−organic framework with sandwich-like binding sites for benchmark acetylene capture. Advanced Materials, 2020, 32( 24): 1908275 
														     														     	 
														     															     		https://doi.org/10.1002/adma.201908275
														     															     															     															 | 
																  
																														
															| 24 | 
															 
														      S Mukherjee, Y He, D Franz, S Wang, W Xian, A Bezrukov, B Space, Z Xu, J He, M Zaworotko. Halogen-C2H2 binding in ultramicroporous metal−organic frameworks (MOFs) for benchmark C2H2/CO2 separation selectivity. Chemistry, 2020, 26( 22): 4923– 4929 
														     														     	 
														     															     		https://doi.org/10.1002/chem.202000008
														     															     															     															 | 
																  
																														
															| 25 | 
															 
														      N Kumar, S Mukherjee, N Harvey-Reid, A Bezrukov, K Tan, V Martins, M Vandichel, T Pham, L van Wyk, K Oyekan, A Kumar, K A Forrest, K M Patil, L J Barbour, B Space, Y Huang, P E Kruger, M J Zaworotko. Breaking the trade-off between selectivity and adsorption capacity for gas separation. Chem, 2021, 7( 11): 3085– 3098 
														     														     	 
														     															     		https://doi.org/10.1016/j.chempr.2021.07.007
														     															     															     															 | 
																  
																														
															| 26 | 
															 
														      L Yang, L Yan, Y Wang, Z Liu, J He, Q Fu, D Liu, X Gu, P Dai, L Li, X Zhao. Adsorption site selective occupation strategy within a metal−organic framework for highly efficient sieving acetylene from carbon dioxide. Angewandte Chemie International Edition, 2021, 60( 9): 4570– 4574 
														     														     	 
														     															     		https://doi.org/10.1002/anie.202013965
														     															     															     															 | 
																  
																														
															| 27 | 
															 
														      F Luo, C Yan, L Dang, R Krishna, W Zhou, H Wu, X Dong, Y Han, T L Hu, M O’Keeffe, L Wang, M Luo, R B Lin, B Chen. UTSA-74: a MOF-74 isomer with two accessible binding sites per metal center for highly selective gas separation. Journal of the American Chemical Society, 2016, 138( 17): 5678– 5684 
														     														     	 
														     															     		https://doi.org/10.1021/jacs.6b02030
														     															     															     															 | 
																  
																														
															| 28 | 
															 
														      L Zhang, K Jiang, L Yang, L Li, E Hu, L Yang, K Shao, H Xing, Y Cui, Y Yang, B Li, B Chen, G Qian. Benchmark C2H2/CO2 separation in an ultra-microporous metal−organic framework via copper(I)-alkynyl chemistry. Angewandte Chemie International Edition, 2021, 60( 29): 15995– 16002 
														     														     	 
														     															     		https://doi.org/10.1002/anie.202102810
														     															     															     															 | 
																  
																														
															| 29 | 
															 
														      K J Chen, H Scott, D Madden, T Pham, A Kumar, A Bajpai, M Lusi, K Forrest, B Space, J IV Perry, M J Zaworotko. Benchmark C2H2/CO2 and CO2/C2H2 separation by two closely related hybrid ultramicroporous materials. Chem, 2016, 1( 5): 753– 765 
														     														     	 
														     															     		https://doi.org/10.1016/j.chempr.2016.10.009
														     															     															     															 | 
																  
																														
															| 30 | 
															 
														      M D Jiang, X L Cui, L F Yang, Q W Yang, Z Q Zhang, Y W Yang, H B Xing. A thermostable anion-pillared metal−organic framework for C2H2/C2H4 and C2H2/CO2 separations. Chemical Engineering Journal, 2018, 352 : 803– 810 
														     														     	 
														     															     		https://doi.org/10.1016/j.cej.2018.07.104
														     															     															     															 | 
																  
																														
															| 31 | 
															 
														      X Cui, K Chen, H Xing, Q Yang, R Krishna, Z Bao, H Wu, W Zhou, X Dong, Y Han, B Li, Q Ren, M J Zaworotko, B Chen. Pore chemistry and size control in hybrid porous materials for acetylene capture from ethylene. Science, 2016, 353( 6295): 141– 144 
														     														     	 
														     															     		https://doi.org/10.1126/science.aaf2458
														     															     															     															 | 
																  
																														
															| 32 | 
															 
														      P Nugent, Y Belmabkhout, S Burd, A Cairns, R Luebke, K Forrest, T Pham, S Ma, B Space, L Wojtas, M Eddaoudi, M J Zaworotko. Porous materials with optimal adsorption thermodynamics and kinetics for CO2 separation. Nature, 2013, 495( 7439): 80– 84 
														     														     	 
														     															     		https://doi.org/10.1038/nature11893
														     															     															     															 | 
																  
																														
															| 33 | 
															 
														      X Cui, Z Niu, C Shan, L Yang, J Hu, Q Wang, P C Lan, Y Li, L Wojtas, S Ma, H Xing. Efficient separation of xylene isomers by a guest-responsive metal−organic framework with rotational anionic sites. Nature Communications, 2020, 11( 1): 5456 
														     														     	 
														     															     		https://doi.org/10.1038/s41467-020-19209-7
														     															     															     															 | 
																  
																														
															| 34 | 
															 
														      R B Lin, L Li, H Wu, H Arman, B Li, R G Lin, W Zhou, B Chen. Optimized separation of acetylene from carbon dioxide and ethylene in a microporous material. Journal of the American Chemical Society, 2017, 139( 23): 8022– 8028 
														     														     	 
														     															     		https://doi.org/10.1021/jacs.7b03850
														     															     															     															 | 
																  
																														
															| 35 | 
															 
														      J Lee, C Y Chuah, J Kim, Y Kim, N Ko, Y Seo, K Kim, T H Bae, E Lee. Separation of acetylene from carbon dioxide and ethylene by a water-stable microporous metal−organic framework with aligned imidazolium groups inside the channels. Angewandte Chemie International Edition, 2018, 57( 26): 7869– 7873 
														     														     	 
														     															     		https://doi.org/10.1002/anie.201804442
														     															     															     															 | 
																  
																														
															| 36 | 
															 
														      Y Ye, Z Ma, R B Lin, R Krishna, W Zhou, Q Lin, Z Zhang, S Xiang, B Chen. Pore space partition within a metal−organic framework for highly efficient C2H2/CO2 separation. Journal of the American Chemical Society, 2019, 141( 9): 4130– 4136 
														     														     	 
														     															     		https://doi.org/10.1021/jacs.9b00232
														     															     															     															 | 
																  
																														
															| 37 | 
															 
														      Y Li, Y Wang, Y Xue, H Li, Q Zhai, S Li, Y Jiang, M Hu, X Bu. Ultramicroporous building units as a path to bi-microporous metal−organic frameworks with high acetylene storage and separation performance. Angewandte Chemie International Edition, 2019, 58( 38): 13590– 13595 
														     														     	 
														     															     		https://doi.org/10.1002/anie.201908378
														     															     															     															 | 
																  
																														
															| 38 | 
															 
														      Z Niu, X Cui, T Pham, G Verma, P Lan, C Shan, H Xing, K Forrest, S Suepaul, B Space, A Nafady, A M Al-Enizi, S Ma. A MOF-based ultra-strong acetylene nano-trap for highly efficient C2H2/CO2 separation. Angewandte Chemie International Edition, 2021, 60( 10): 5283– 5288
														     															 | 
																  
																														
															| 39 | 
															 
														      J Duan, W Jin, R Krishna. Natural gas purification using a porous coordination polymer with water and chemical stability. Inorganic Chemistry, 2015, 54( 9): 4279– 4284 
														     														     	 
														     															     		https://doi.org/10.1021/ic5030058
														     															     															     															 | 
																  
																														
															| 40 | 
															 
														      Q Qian, X Gu, J Pei, H Wen, H Wu, W Zhou, B Li, G Qian. A novel anion-pillared metal−organic framework for highly efficient separation of acetylene from ethylene and carbon dioxide. Journal of Materials Chemistry A, 2021, 9( 14): 9248– 9255 
														     														     	 
														     															     		https://doi.org/10.1039/D0TA11340A
														     															     															     															 | 
																  
																														
															| 41 | 
															 
														      H Li, C Liu, C Chen, Z Di, D Yuan, J Pang, W Wei, M Wu, M Hong. An unprecedented pillar-cage fluorinated hybrid porous framework with highly efficient acetylene storage and separation. Angewandte Chemie International Edition, 2021, 60( 14): 7547– 7552 
														     														     	 
														     															     		https://doi.org/10.1002/anie.202013988
														     															     															     															 | 
																  
																														
															| 42 | 
															 
														      Z Zhang, X Cui, X Jiang, Q Ding, J Cui, Y Zhang, Y Belmabkhout, K Adil, M Eddaoudi, H Xing. Efficient splitting of trans-/cis-olefins using an anion-pillared ultramicroporous metal−organic framework with guest-adaptive pore channels. Engineering, 2022, 11 : 80– 86 
														     														     	 
														     															     		https://doi.org/10.1016/j.eng.2021.10.013
														     															     															     															 | 
																  
																																										 
								             
                                             
								                                                        
                                            
                                            
								                                                        
								                                                        
                                            
                                            
                                            
								            
												
											    	
											        	 | 
											        	Viewed | 
											         
													
											        	 | 
											        	 | 
											         
											      	
												         | 
												        
												        	Full text 
												          	
												         | 
											        	
												        	
												        	 
												        	
												          	 
												          	
												          	
														 | 
													 
													
												         | 
												         | 
													 
													
												         | 
												        
												        	Abstract 
												          	
														 | 
												        
															
															 
															
															
												         | 
													 
													
												         | 
												         | 
													 
													
												         | 
												        Cited  | 
												        
												        	
												         | 
													 
													
												         | 
												         | 
												         | 
													 
													
													    |   | 
													    Shared | 
													       | 
												  	 
												  	
													     | 
													     | 
													     | 
											  		 
											  		
													    |   | 
													    Discussed | 
													       | 
												  	 
											 
											 
								         
                                        
  
									 | 
								 
							 
						 | 
					 
				 
			
		 |