Please use this identifier to cite or link to this item:
|Title:||CO2 reforming of methane to synthesis gas over sol-gel-made Ni/γ-Al2O3 catalysts from organometallic precursors|
|Authors:||Tang, S. |
|Keywords:||CO2 reforming of methane|
|Source:||Tang, S., Ji, L., Lin, J., Zeng, H.C., Tan, K.L., Li, K. (2000-09-10). CO2 reforming of methane to synthesis gas over sol-gel-made Ni/γ-Al2O3 catalysts from organometallic precursors. Journal of Catalysis 194 (2) : 424-430. ScholarBank@NUS Repository. https://doi.org/10.1006/jcat.2000.2957|
|Abstract:||Considerable interest is being lavished on CO2 reforming of methane to synthesis gas because it yields synthesis gas with a high CO/H2 ratio that is ideal for the synthesis of higher hydrocarbons and oxygenated derivatives. The catalytic activity and coking resistivity of three Ni-based catalysts for CO2 reforming of methane to synthesis gas were investigated in a continuous-flow microreactor under 1 atm. These catalysts were prepared by conventional impregnation of commercial γ-Al2O3 support (NiAlCO-IM), sol-gel-made γ-Al2O3 (NiAlSG-IM), and direct sol-gel processing from organometallic compounds (NiAlsG). The three catalysts had comparable activity but showed considerable variation in coking resistivity. NiAlSG-IM catalyst had excellent coking resistivity with no obvious coke even after 80 hr of reaction on stream, under thermodynamically severe conditions. A little coke deposited on NiAlSG. In comparison, fast and heavy coke deposition was detected on NiAlCO-IM catalyst and the reaction was sustained only about 3.5 hr accompanied with the plugging of reactor. NiAlSG-IM catalyst prepared from organometallic compounds had very high BET surface area and small metallic Ni particles. The small size of metallic Ni particles was a major inhibitor of coke formation. The critical size of Ni particles to inhibit coke deposition was suggested at ~ 10 nm. Prevention of coke formation may also be achieved with γ-Al2O3 support made from sol-gel processing of organometallic precursors.|
|Source Title:||Journal of Catalysis|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 22, 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.