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    					Zeolite-encaged gold catalysts for the oxidative condensation of furfural  | 
  					 
  					  										
						Weijie Li1,2, Mingyang Gao1, Bin Qin2( ), Xin Deng2, Landong Li1,2,3( ) | 
					 
															
						1. School of Materials Science and Engineering, Nankai University, Tianjin 300350, China 2. College of Chemistry, Nankai University, Tianjin 300071, China 3. Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300192, China | 
					 
										
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													     		                            						                            																	    Abstract  The oxidative condensation between renewable furfural and fatty alcohols is a crucial avenue for producing high-quality liquid fuels and valuable furan derivatives. The selectivity control in this reaction process remains a significant challenge. Herein, we report the strategy of confining well dispersed gold species within ZSM-5 structure to construct highly active Au@ZSM-5 zeolite catalysts for the oxidative condensation of furfural. Characterization results and spectroscopy analyses demonstrate the efficient encapsulation of isolated and cationic Au clusters in zeolite structure. Au@ZSM-5(K) catalyst shows remarkable performance with 69.7% furfural conversion and 90.2% furan-2-acrolein selectivity as well as good recycle stability. It is revealed that the microstructure of ZSM-5 zeolite can significantly promote oxidative condensation activity through confinement effects. This work presents an explicit example of constructing zeolite encaged noble metal catalysts toward targeted chemical transformations. 
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															| Keywords 
																																																				zeolite  
																		  																																				encapsulation  
																		  																																				gold  
																		  																																				oxidative condensation  
																		  																																				furfural  
																																			  
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																																Corresponding Author(s):
																Bin Qin,Landong Li   
																													     		
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																															Just Accepted Date: 29 April 2024  
																																																													Issue Date: 12 July 2024
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