Effect of crystallite size of SAPO-34 catalysts on their induction period and deactivation in methanol-to-olefin reactions
作者： Kwang Young Lee , Ho-Jeong Chae , Soon-Yong Jeong , Gon Seo , None
DOI: 10.1016/J.APCATA.2009.08.033
关键词: Alcohol 、 Induction period 、 Chemistry 、 Organic chemistry 、 Crystallite 、 Methanol 、 Catalysis 、 Heterogeneous catalysis 、 Olefin fiber 、 Chemical engineering 、 Diffusion
摘要: Methanol-to-olefin (MTO) reactions were investigated over three kinds of SAPO-34 catalysts with similar acidities but different crystallite sizes to elucidate the effect size on their catalytic performance, especially in terms induction period and deactivation. The prepared showed physical chemical properties, except for sizes. catalyst composed large crystallites (∼7 μm) was activated after a definite deactivated rapidly, while that small (∼0.4 achieved complete conversion without any appreciable retained its activity relatively long time. This variation performance according attributed number accessible cages near external surface diffusion limitation materials. Simulated profiles MTO supported this explanation.
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sci-hub.se 参考文章(21)
X Wu, Methanol conversion on SAPO-34: reaction condition for fixed-bed reactor Applied Catalysis A-general. ,vol. 260, pp. 63- 69 ,(2004) , 10.1016/J.APCATA.2003.10.011
Donald W Breck, Zeolite Molecular Sieves: Structure, Chemistry, and Use ,(1974)
Yoshihiro Sugi, Hiroyoshi Maekawa, Shafeek Abdul Rashid Mulla, Akira Ito, Chikayo Naitoh, Kazunori Nakagawa, Kenichi Komura, Yoshihiro Kubota, Jong-Ho Kim, Gon Seo, The Alkylation of Biphenyl over Fourteen-Membered Ring Zeolites. The Influence of Zeolite Structure and Alkylating Agent on the Selectivity for 4,4′-Dialkylbiphenyl Bulletin of the Chemical Society of Japan. ,vol. 80, pp. 1418- 1428 ,(2007) , 10.1246/BCSJ.80.1418
De Chen, Kjell Moljord, Terje Fuglerud, Anders Holmen, The effect of crystal size of SAPO-34 on the selectivity and deactivation of the MTO reaction Microporous and Mesoporous Materials. ,vol. 29, pp. 191- 203 ,(1999) , 10.1016/S1387-1811(98)00331-X
Dong Ho Choi, Ji Won Park, Jong-Ho Kim, Yoshihiro Sugi, Gon Seo, Liquid-phase degradation of HDPE over alkali-treated MFI zeolites with mesopores Polymer Degradation and Stability. ,vol. 91, pp. 2860- 2866 ,(2006) , 10.1016/J.POLYMDEGRADSTAB.2006.09.002
Norikazu Nishiyama, Masumi Kawaguchi, Yuichiro Hirota, Dung Van Vu, Yasuyuki Egashira, Korekazu Ueyama, Size control of SAPO-34 crystals and their catalyst lifetime in the methanol-to-olefin reaction Applied Catalysis A-general. ,vol. 362, pp. 193- 199 ,(2009) , 10.1016/J.APCATA.2009.04.044
James F. Haw, David M. Marcus, Well-defined (supra)molecular structures in zeolite methanol-to-olefin catalysis Topics in Catalysis. ,vol. 34, pp. 41- 48 ,(2005) , 10.1007/S11244-005-3798-0
Frerich J. Keil, Methanol-to-hydrocarbons: process technology Microporous and Mesoporous Materials. ,vol. 29, pp. 49- 66 ,(1999) , 10.1016/S1387-1811(98)00320-5
Ji Won Park, Gon Seo, IR study on methanol-to-olefin reaction over zeolites with different pore structures and acidities Applied Catalysis A-general. ,vol. 356, pp. 180- 188 ,(2009) , 10.1016/J.APCATA.2009.01.001
Miles J. van Niekerk, Jack C.Q. Fletcher, Cyril T. O'Connor, Effect of catalyst modification on the conversion of methanol to light olefins over SAPO-34 Applied Catalysis A: General. ,vol. 138, pp. 135- 145 ,(1996) , 10.1016/0926-860X(95)00240-5