Studies of THF-FER Zeolite Ⅳ. Acidity and Catalytic Property for Skeletal Isomerization of C5 Olefins

Acta Chimica Sinica ›› 2004, Vol. 62 ›› Issue (8): 833-838. Previous Articles Next Articles

THFFER沸石的系列研究Ⅳ.固体酸性及C₅烯烃骨架异构化催化性能

周伟正¹, 林德昌^1,2, 钟鹰^1,3, 郭娟¹, 王梯¹, 龙英才¹

1. 复旦大学化学系分子催化和新材料实验室, 上海, 200433;
2. 第二军医大学药学院, 上海, 200433;
3. 昭通师范高等专科学校, 昭通, 657000

投稿日期:2003-06-23 修回日期:2003-12-31 发布日期:2014-02-18
通讯作者: 龙英才,E-mail:yclong@fudan.edu.cn E-mail:yclong@fudan.edu.cn
基金资助:
国家自然科学基金(No.20073010)和教育部博士点基金(No.98024613)资助项目.

Studies of THF-FER Zeolite Ⅳ. Acidity and Catalytic Property for Skeletal Isomerization of C₅ Olefins

ZHOU Wei-Zheng¹, LIN De-Chang^1,2, ZHONG Ying^1,3, GUO Juan¹, WANG Ti¹, LONG Ying-Cai¹

1. Laboratory of Molecular Catalysis and Innovative Materials, Department of Chemistry, Fudan University, Shanghai 200433;
2. School of Pharmacy, Second Military Medical University, Shanghai 200433;
3.c Zhaotong Teacher's College, Zhaotong 657000

Received:2003-06-23 Revised:2003-12-31 Published:2014-02-18

Abstract

THF-FER (ferrierite) zeolite was synthesized in the reactant system of tetrahydrofuran (THF)-Na₂O-SiO₂-Al₂O3-H₂O. H-FER-1 and H-FER-2 were prepared by two means, ion-exchange/de-template (I) and de-template/ion-exchange (Ⅱ). The FT-IR and NH₃-TPD investigations showed that the strong acid sites of H-FER zeolite, which are beneficial to the skeletal isomerization of olefin, were mainly the Brönsted acid sites. Aluminium would be removed from the framework when the samples were treated with saturated water vapor at 1073 K for 10 h. However, about 60% of Brönsted acid sites remained, and only minor terminal silanol groups were generated. Particularly, the framework of H-FER-1 sample was rather perfect with more Brönsted acid sites and less defects. The evaluations on the catalysis proved that H-FER zeolites exhibited interesting catalytic performance among activity, stability and selectivity in skeletal isomerization of C₅ olefin.

Key words: FER zeolite, acidity, skeletal isomerization of olefin, FT-IR, NH₃-TPD

CLC Number:

O643.3

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ZHOU Wei-Zheng, LIN De-Chang, ZHONG Ying, GUO Juan, WANG Ti, LONG Ying-Cai. Studies of THF-FER Zeolite Ⅳ. Acidity and Catalytic Property for Skeletal Isomerization of C₅ Olefins[J]. Acta Chimica Sinica, 2004, 62(8): 833-838.

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THFFER沸石的系列研究Ⅳ.固体酸性及C₅烯烃骨架异构化催化性能

Studies of THF-FER Zeolite Ⅳ. Acidity and Catalytic Property for Skeletal Isomerization of C₅ Olefins

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THFFER沸石的系列研究Ⅳ.固体酸性及C5烯烃骨架异构化催化性能