Please use this identifier to cite or link to this item: https://doi.org/10.1016/S0926-860X(00)00659-1
Title: CO2 reforming of methane to synthesis gas over sol-gel-made Co/γ-Al2O3 catalysts from organometallic precursors
Authors: Ji, L.
Tang, S. 
Zeng, H.C. 
Lin, J. 
Tan, K.L. 
Issue Date: 1-Feb-2001
Citation: Ji, L., Tang, S., Zeng, H.C., Lin, J., Tan, K.L. (2001-02-01). CO2 reforming of methane to synthesis gas over sol-gel-made Co/γ-Al2O3 catalysts from organometallic precursors. Applied Catalysis A: General 207 (1-2) : 247-255. ScholarBank@NUS Repository. https://doi.org/10.1016/S0926-860X(00)00659-1
Abstract: Three cobalt-based catalysts with the same cobalt content (10 wt.%) were prepared by conventional impregnation of commercial γ-Al2O3 support (CoAlCO-IM), sol-gel-made γ-Al2O3 (CoAlSG-IM) and direct sol-gel processing from organometallic compounds (CoAlSG), respectively. At 750 °C, all three catalysts had the same catalytic activity. However, CoAlSG catalyst showed relatively low catalytic activity at low reaction temperatures (550-650 °C) and high space velocity, due to the formation of CoAl2O4. It had the best coking resistivity with the average coking rate of 0.0025 g(carbon) g(cat.)-1 h-1. Fast and heavy coke deposition occurred on CoAlCO-IM catalyst, with an average coking rate of 0.11 g(carbon) g(cat.)-1h-1. The lifetime of CoAlSG catalyst was 24 times longer than that of CoAlCO-IM catalyst, under thermodynamically severe reaction conditions (CO2/CH4 = 0.88, 700 °C). Compared to CoAlCO-IM catalyst, CoAlSG possesses smaller metallic Co particles, richer surface OH species and stronger metal-support interaction. All of these properties may benefit the inhibition of coke formation.
Source Title: Applied Catalysis A: General
URI: http://scholarbank.nus.edu.sg/handle/10635/91898
ISSN: 0926860X
DOI: 10.1016/S0926-860X(00)00659-1
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

69
checked on May 21, 2018

WEB OF SCIENCETM
Citations

72
checked on May 1, 2018

Page view(s)

57
checked on May 18, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.