Please use this identifier to cite or link to this item:
|Title:||CO2 reforming of methane to synthesis gas over sol-gel-made Co/γ-Al2O3 catalysts from organometallic precursors|
|Source:||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|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 14, 2018
WEB OF SCIENCETM
checked on Jan 17, 2018
checked on Feb 19, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.