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多级孔ZSM-5分子筛的制备及催化噻吩烷基化性能研究

赵岑 ,  刘冬梅 ,  魏民 ,  孙志岩 ,  王海彦

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引用本文: 赵岑, 刘冬梅, 魏民, 孙志岩, 王海彦. 多级孔ZSM-5分子筛的制备及催化噻吩烷基化性能研究[J]. 燃料化学学报, 2013, 41(10): 1256-1261. shu
Citation:  ZHAO Cen, LIU Dong-mei, WEI Min, SUN Zhi-yan, WANG Hai-yan. Preparation of hierarchical ZSM-5 zeolites and their catalytic performance in thiophene alkylation[J]. Journal of Fuel Chemistry and Technology, 2013, 41(10): 1256-1261. shu

多级孔ZSM-5分子筛的制备及催化噻吩烷基化性能研究

    通讯作者: 王海彦,Tel:024-56860958,E-mail:fswhy@126.com。
摘要: 用不同浓度的Na2CO3溶液处理ZSM-5分子筛,采用XRD、XRF、SEM、N2吸附脱附及NH3-TPD方法对处理前后的ZSM-5分子筛进行表征,并考察了Na2CO3溶液处理对ZSM-5分子筛孔结构、酸性以及噻吩烷基化性能的影响。结果表明,Na2CO3溶液处理在保持ZSM-5分子筛微孔骨架结构的同时,增加了ZSM-5分子筛的比表面积、外表面积和介孔体积,并调变了酸性。Na2CO3溶液处理提高了ZSM-5分子筛催化剂的噻吩烷基化活性和噻吩选择性。一定反应条件下,随着Na2CO3溶液浓度增加,多级孔ZSM-5分子筛的噻吩烷基化性能逐渐提高,而噻吩选择性先增加后下降。当Na2CO3溶液浓度为2 mol/L时,分子筛的噻吩转化率和噻吩选择性分别为81.26 %和73.15%。当Na2CO3溶液浓度为3 mol/L时,噻吩转化率和选择性分别为90.57 %和72.59%。

English

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  • 收稿日期:  2013-02-04
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