NDLI: Study on bimodal mesoporous Co/SiO$_{2}$ catalysts for the Fischer

Content Provider	Springer Nature Link
Author	Guo, Cuili Wu, Yuanyuan Zhan, Jishan
Copyright Year	2013
Abstract	A series of SiO$_{2}$ supports were prepared with the sol–gel method. Bimodal mesoporous Co/SiO$_{2}$ catalysts with different pore size distributions were prepared. The samples were characterized by means of N$_{2}$ adsorption–desorption, powder X-ray diffraction, H$_{2}$-chemisorption, H$_{2}$ temperature programmed reduction and Raman spectroscopy. The catalysts were employed in Fischer–Tropsch synthesis under the reaction conditions of 240 °C, 2 MPa and 1,000 h$^{−1}$ to investigate their catalytic performance with different pore diameters. The experimental results revealed that the bimodal catalysts contain high specific surface area contributed from the formation of smaller mesopores during sol–gel process. Small Co particles of bimodal catalyst are able to be highly dispersed and behave moderate metal-support interaction without formation of hardly reducible species, which favors the production of sufficient active centers, contributing to the high catalytic activity. Moreover, increasing the pore size of the larger pores in bimodal mesoporous catalysts will facilitate the transportation of primary products and inhibit the hydrocracking to generate light hydrocarbons, promoting the production of heavy hydrocarbons with high C$_{5+}$ selectivity.
Starting Page	497
Ending Page	508
Page Count	12
File Format	PDF
ISSN	18785190
Journal	Reaction Kinetics and Catalysis Letters
Volume Number	109
Issue Number	2
e-ISSN	18785204
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-04-26
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Fischer–Tropsch synthesis Co/SiO$_{2}$ Co catalyst Bimodal mesoporous Catalysis Physical Chemistry Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Catalysis

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