화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.35, 123-131, March, 2016
DOI10.1016/j.jiec.2015.12.015  Export Citation
The effects of SiO2/Al2O3 and H2O/Al2O3 molar ratios on SAPO-34 catalysts in methanol to olefins (MTO) process using experimental design
Kobra Rahimi, Jafar Towfighi†, Mehdi Sedighi1, Shima Masoumi, and Zahra Kooshki
  • Department of Chemical Engineering, Tarbiat Modares University, PO Box 14115-143, Tehran, Iran
  • 1Industrial Chemistry Research Laboratory, Division of Applied Chemistry, University of Qom, Qom, Iran
E-mail:
To investigate the effects of silicon and water content on SAPO-34 catalyst, a number of experiments by using response surface methodology of molar ratios of SiO2/Al2O3 = 0.1-0.6 and H2O/Al2O3 = 50-120 were performed. The catalytic performances of prepared SAPO-34 samples at 410 ℃and 30 wt.% methanol in water for MTO process were investigated. Due to relatively high crystallinity and small crystal size (1.3 μm); SiO2/Al2O3 = 0.17 and H2O/Al2O3 = 109.75 catalyst showed high total light olefins selectivity (71.45%). ANOVA results indicated that the light olefins selectivity was influenced more by changing of SiO2/Al2O3 molar ratio rather of H2O/Al2O3 molar ratio.
Keywords:SAPO-34;Crystallinity;MTO process;Selectivity;ANOVA
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