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The kinetic study of light alkene syntheses by
CO 2 hydrogenation over Fe-Ni catalysts |
Yaling ZHAO,Li WANG,Xiwei HAO,Jiazhou WU, |
Department of Chemical
Engineering, Xi''an Jiaotong University, Xi''an 710049, China; |
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Abstract A kinetics model of CO2 hydrogenation over iron-nickel catalysts was developed based on the detailed mechanism of alkenes re-adsorption and secondary reaction. The corresponding kinetical experiments are conducted in a continuous fixed bed reactor. The effect of reaction conditions on catalyst performance was analyzed according to the results of orthogonal experiments. The results of the experiments show that more methane in products can be obtained with iron-nickel catalysts, the trend of which is consistent with the thermodynamic analysis. However, the content of alkenes in products is equivalent with that of alkanes. This shows that the reaction is controlled by kinetics. In all, the results of the experiments also substantiate that the model can give a good representation of the reaction mechanism of CO2 hydrogenation over iron-nickel catalysts. The parameters of this model give a better explanation for the question why the iron-nickel catalysts have a higher selectivity toward alkenes compared with other iron-based catalysts.
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Issue Date: 05 June 2010
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Du Y L, Su J H. The feasibilitystudy of comprehensive utilization on carbon dioxide. J Jilin Ins Technol, 1998, 19 (3): 1―11
|
|
Iwao O. Aspects of carbon dioxide utilization. Catal today, 2006, 115: 33―52
doi: 10.1016/j.cattod.2006.02.024
|
|
Wang M M, Xu L, Duan X, He Y L. The strategic choice for CO2 utilization inChina. Resour Sci, 2009, 31(5): 829―835
|
|
Liu Y K, Hou D, Wang L, Wang J Z. The research progress of light alkenes synthesis by CO2 hydrogenation. Chem EngOil & Gas, 2003, 32(6): 343―348
|
|
Liu Y K, Wang L, Hou D, Wan H, Feng X. Study on thermodynamics ofbalanceable reaction system for hydrogenation of carbon dioxide tolight alkenes. Chin J Catal, 2004, 25(3): 210―218 (in Chinese)
|
|
Choi P H, Jun K W, Lee S J, Choi M J, Lee K W. Hydrogenation of carbon dioxideover alumina supported Fe-K catalysts. Catal Lett, 1996, 40(1―2): 115―118
doi: 10.1007/BF00807467
|
|
Liu X Y, Deng G C, Chen R T, Chen M F. Hydrogenation of carbon dioxide to light olefins on Fe-Co bimetalliccatalyst. J Fuel Chem Tech, 1999, 27(2): 145―149
|
|
Tripol'skii A I, Odnovolik V I, Pavlenko N V. Kinetics and mechanism offormation of CO and hydrocarbons in the heterogeneous-catalytic hydrogenationof carbon dioxide over transition metals. Teor Eksp Khim, 1996, 32(2): 107―112
|
|
Xu L Y, Wang Q X, Liang D B, Tian Z J. Study of K-Fe-MnO/Silicalite-2 catalyst for CO2: hydrogenation to light olefins. I. catalyst performance and reactionmechanism. Chem Eng Nat Gas,1995, 20(5): 634―641
|
|
Li M Q, Deng G C, Rong R D. The systhesis of light olefins from CO2 hydrogenation on FeCoK catalysts. J Hebei Univ Tech, 2000, 29 (2): 413―420 (in Chinese)
|
|
Lox E S, Froment G F. Kinetics of the Fischer-Tropsch reaction on a precipitated promotediron catalyst. 1. experimental procedure and results. Ind Eng Chem Res, 1993, 32: 61―78
doi: 10.1021/ie00013a010
|
|
Lox E S, Froment G F. Kinetics of the Fischer-Tropsch reaction on a precipitated promotediron catalyst. 2. kinetic modeling. IndEng Chem Res, 1993, 32: 71―81
doi: 10.1021/ie00013a011
|
|
Van der Laan, G P Beenackers, A A C M. Kinetics and selectivity of theFischer-Tropsch synthesis: a literature review. Catal Rev-Sci Eng, 1999, 41(3-4): 255―264
doi: 10.1081/CR-100101170
|
|
Ma W P, Li Y W, Zhao Y L, Xu Y Y, Zhou J L. Kinetics of Fischer-Tropschsynthesis over Fe-Cu-K catalyst (I): kinetic model based on the mechanism. J Chem Ind Eng, 1999, 50(2): 159―166
|
|
Ma W P, Li Y W, Zhao Y L, Zhou J L, Zhong B. Kinetics of Fischer-Tropschsynthesis over Fe-Cu-K catalyst (II): model discrimination and parameterestimation. J Chem Ind Eng, 1999, 50(2): 167―175
|
|
Meng X B, Huang Y M, Zhang T L. Progress on the research of heterogeneouscatalytic hydrogenation reaction of carbon dioxide. Chin J Synth Chem, 1996, 4(3): 209―214 (in Chinese)
|
|
Wierzchowski T. Hydrogenation of CO2. React Kinet Catal Lett, 1986, 30: 203―213
doi: 10.1007/BF02064293
|
|
Lu Z J, Lin P Z, Xu C H. The study of light alkenes synthesisfrom CO2 hydrogenation. Nat Gas Chem Ind, 1993, 18(1): 231―236 (in Chinese)
|
|
Keim W. Catalysis in C1 Chemistry. Beijing: Beijing Chemical IndustryPress, 1989
|
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