CO2 hydrogenation over copper-based hybrid catalysts for the synthesis of oxygenates

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Hybrid catalysts consisting of Cu-based methanol synthesis catalyst and zeolite were investigated for CO2 hydrogenation by following the idea that thermodynamic limitation in methanol synthesis from CO2 hydrogenation could be overcome through in situ transformation of methanol to dimethylether(DME) to enhance the yield of oxygenates (methanol + DME). Cu/ZnO/ZrO2 and Cu/ZnO/Ga2O3 were chosen as methanol synthesis catalysts, and NaZSM-5, HZSM5, H-Ga-silicate and SAPO-34 as zeolites. The hybrid catalyst of Cu/ZnO/ZrO2 and H-Ga-silicate showed the highest yield of oxygenates. The modification of reducibility or oxygen coverage due to the interactions between methanol synthesis catalyst and zeolite was found to improve the catalytic performance in oxygenates synthesis.
Publisher
AMER CHEMICAL SOC
Issue Date
2003
Language
English
Article Type
Article; Proceedings Paper
Keywords

METHANOL SYNTHESIS; DIMETHYL ETHER; CARBON-DIOXIDE; SYNTHESIS GAS; HYDROCARBON SYNTHESIS; CONVERSION; SAPO-34

Citation

UTILIZATION OF GREENHOUSE GASES, v.852, pp.183 - 194

ISSN
0097-6156
DOI
10.1021/bk-2003-0852.ch012
URI
http://hdl.handle.net/10203/79166
Appears in Collection
CBE-Journal Papers(저널논문)
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