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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received August 16, 2000
Accepted December 4, 2000

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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The Skeletal Isomerization of C-4-C-7 1-Olefins over Ferrierite and ZSM-5 Zeolite Catalysts

Wang-Gi Kim Jong-Ho Kim Byoung Joon Ahn¹ Gon Seo^2†

Department of Chemical Technology and The Research Institute for Catalysis, Chonnam National University, Gwangju 500-757, Korea ¹Department of Chemistry Education, Chonbuk National University, Chonju 561-756, Korea ²Department of Chemistry Education, Chonnam National University, Gwangju 5990757, Korea

gseo@chonnam.chonnam.ac.kr

Korean Journal of Chemical Engineering, January 2001, 18(1), 120-126(7), 10.1007/BF02707208

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Abstract

The skeletal isomerization of C-4-C-7 1-olefins was studied on ferrierite (FER) and ZSM-5 (MFI) zeolites to elucidate the effect of the molecular distribution in zeolite pores on the selectivity for iso-olefin formation. Regardless of the difference in molecular length of 1-olefins, the FER zeolite showed high selectivity for iso-olefins, while the selectivity became slightly low at the skeletal isomerization of long olefin molecules. The drastic decrease in the selectivity of MFI zeolites by increasing the conversion is concurrently observed in the skeletal isomerization of C-4-C-7 1-olefins. The high selectivity of FER zeolites is explained by their sparse distributions of olefin molecules in pores, which induces a high preference for monomolecular skeletal isomerization.

Keywords

C-4-C-7 1-Olefins Skeletal Isomerization Ferrierite ZSM-5 Zeolite Pore Shape

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