Effects of micro and nano-sized SAPO-34 and SAPO-5 catalysts on the conversion of methanol to light olefins
作者： Hamidreza Hajfarajollah , Sima Askari , Rouein Halladj
DOI: 10.1007/S11144-013-0650-6
关键词: Methanol 、 Crystallite 、 Chemical engineering 、 Crystal 、 Catalysis 、 Hydrothermal circulation 、 Particle size 、 Mineralogy 、 Selectivity 、 Phase (matter) 、 Materials science
摘要: In the present study, SAPO-34 and SAPO-5 catalysts with different crystallite size were synthesized under hydrothermal conditions partially characterized by XRD, SEM, EDX, BET NH3-TPD. Crystallite sizes in range of 450 nm–8 μm obtained. To elucidate effects on their catalytic performance, especially terms conversion, life time selectivity, performance methanol-to-olefin reaction over these two SAPO was investigated. The catalyst small crystals showed a longer lifetime higher conversion methanol as well more than 50 % selectivity toward light olefins. Synthesized larger significantly shorter lower overall results this study demonstrate that not only phase (SAPO-34 or SAPO-5) but also crystal are critical factors governing MTO selectivity.
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sci-hub.se 参考文章(41)
J. Chen, P.A. Wright, S. Natarajan, J.M. Thomas, Understanding The Brønsted Acidity of Sapo-5, Sapo-17, Sapo-18 and SAPO-34 and Their Catalytic Performance for Methanol Conversion to Hydrocarbons Studies in Surface Science and Catalysis. ,vol. 84, pp. 1731- 1738 ,(1994) , 10.1016/S0167-2991(08)63726-X
Eric G. Derouane, Factors Affecting The Deactivation Of Zeolites By Coking Studies in Surface Science and Catalysis. ,vol. 20, pp. 221- 240 ,(1985) , 10.1016/S0167-2991(09)60173-7
S.M. Yang, S.I. Wang, C.S. Huang, Methanol Conversion on Silicoaluminophosphate Molecular Sieves Studies in Surface Science and Catalysis. ,vol. 61, pp. 429- 435 ,(1991) , 10.1016/S0167-2991(08)60109-3
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
Ch Baerlocher, Lynne B McCusker, David H Olson, Atlas of Zeolite Framework Types ,(2007)
Mark E. Davis, Ordered porous materials for emerging applications Nature. ,vol. 417, pp. 813- 821 ,(2002) , 10.1038/NATURE00785
Kwang Young Lee, Ho-Jeong Chae, Soon-Yong Jeong, Gon Seo, None, Effect of crystallite size of SAPO-34 catalysts on their induction period and deactivation in methanol-to-olefin reactions Applied Catalysis A-general. ,vol. 369, pp. 60- 66 ,(2009) , 10.1016/J.APCATA.2009.08.033
Qingjun Zhu, Junko N. Kondo, Ryosuke Ohnuma, Yoshihiro Kubota, Masashi Yamaguchi, Takashi Tatsumi, The study of methanol-to-olefin over proton type aluminosilicate CHA zeolites Microporous and Mesoporous Materials. ,vol. 112, pp. 153- 161 ,(2008) , 10.1016/J.MICROMESO.2007.09.026
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
Tian-cun Xiao, Li-dun An, Hong-li Wang, Dependence of the nature and catalytic performance on the synthesis factors of SAPO-5 molecular sieve Applied Catalysis A-general. ,vol. 130, pp. 187- 194 ,(1995) , 10.1016/0926-860X(95)00107-7