Design of a zeolite capsule catalyst by controlling the support size for the direct synthesis of isoparaffin

Authors: Yang, Guohui¹; He, Jingjiang¹; Yoneyama, Yoshiharu¹; Tan, Yisheng²; Han, Yizhuo²; Tsubaki, Noritatsu¹

Source: Research on Chemical Intermediates, Volume 34, Numbers 8-9, 2008 , pp. 771-779(9)

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Abstract:

Three kinds of H-ZSM-5 zeolite capsule catalysts were prepared on Co/SiO₂ catalyst pellets of different sizes. Characterization of the catalysts indicated that a defect-free H-ZSM-5 membrane had been constructed successfully on the Co/SiO₂ surface. The smaller Co/SiO₂ pellets were favorable for zeolite capsule growth under the same synthesis conditions. Zeolite capsule catalysts, especially the catalysts with smaller pellet sizes, had a higher isoparaffin selectivity compared with conventional FTS Co/SiO₂ catalyst and mixed catalyst of Co/SiO₂ with H-ZSM-5 zeolite.

Keywords: ISOPARAFFIN; FISCHER-TROPSCH SYNTHESIS; ZEOLITE CAPSULE CATALYST; HYDROCRACKING; ISOMERIZATION

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856708786189384

Affiliations: 1: Department of Applied Chemistry, School of Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan 2: Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China

Publication date: 2008-10-01