Methanol and DME Co-production from CO2 hydrogenation over hybrid catalysts
Catalytic hydrogenation of CO2 into methanol and dimethyl ether was carried out over hybrid catalysts consisting of methanol-synthesis catalyst and zeolite. The methanol-synthesis catalyst, Cu/ZnO/Al2O3, was prepared by a co-precipitation method. Then it was physically mixed with HZSM-5 zeolite at w...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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David Publishing Company
2009
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| Subjects: | |
| Online Access: | http://scholars.utp.edu.my/id/eprint/1363/ http://scholars.utp.edu.my/id/eprint/1363/1/6-METHANOL_AND_DME_CO-PRODUCTION_FROM_CO2_-_5_0110.doc |
| Summary: | Catalytic hydrogenation of CO2 into methanol and dimethyl ether was carried out over hybrid catalysts consisting of methanol-synthesis catalyst and zeolite. The methanol-synthesis catalyst, Cu/ZnO/Al2O3, was prepared by a co-precipitation method. Then it was physically mixed with HZSM-5 zeolite at weight ratios of 2:1, 1:1 and 1:2. The CO2 hydrogenation reaction was conducted in a fixed-bed microreactor at 250℃ and 40 bar in pre-mixed H2/CO2 feed with H2: CO2 molar ratios of 3:1 and 7:1. Products detected include methanol, dimethyl ether, carbon monoxide and water. Conversion of CO2 and yield of oxygenated products were influenced by the weight ratio of Cu/ZnO/Al2O3: HZSM-5 in the hybrid system and also the feed ratio. The Cu/ZnO/Al2O3: HZSM-5 hybrid at 1:1 resulted in methanol yield of 22.0% and was found to be an efficient hybrid catalyst for the CO2 hydrogenation reaction |
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