引用本文:
Shu Rong Wang, Ling Jun Zhu, Ying Ying Zhu, Xiao Lan Ge, Xin Bao Li. Effects of ethanol on the in situ synthesized Cu/SiC2 catalyst:Texture, structure, and the catalytic performance in hydrogenation dimethyl oxalate to ethylene glycol[J]. Chinese Chemical Letters,
2011, 22(3): 362-365.
doi:
10.1016/j.cclet.2010.10.006
Citation: Shu Rong Wang, Ling Jun Zhu, Ying Ying Zhu, Xiao Lan Ge, Xin Bao Li. Effects of ethanol on the in situ synthesized Cu/SiC2 catalyst:Texture, structure, and the catalytic performance in hydrogenation dimethyl oxalate to ethylene glycol[J]. Chinese Chemical Letters, 2011, 22(3): 362-365. doi: 10.1016/j.cclet.2010.10.006
Citation: Shu Rong Wang, Ling Jun Zhu, Ying Ying Zhu, Xiao Lan Ge, Xin Bao Li. Effects of ethanol on the in situ synthesized Cu/SiC2 catalyst:Texture, structure, and the catalytic performance in hydrogenation dimethyl oxalate to ethylene glycol[J]. Chinese Chemical Letters, 2011, 22(3): 362-365. doi: 10.1016/j.cclet.2010.10.006
Effects of ethanol on the in situ synthesized Cu/SiC2 catalyst:Texture, structure, and the catalytic performance in hydrogenation dimethyl oxalate to ethylene glycol
摘要:
The Cu/SiO2 catalysts were in situ synthesized by the hydrolysis of tetraethyl orthosilicate (TEOS) in one phase solution using ethanol as co-solvent or TEOS/H2O two phases solution, followed by the precipitation of copper on SiO2 by ammonia evaporation. In the hydrogenation of dimethyl oxalate, the catalyst prepared by one phase hydrolysis exhibited higher activity and ethylene glycol (EG) selectivity at lower temperature than that of two phases due to its larger BET surface area and multimodal pore distribution. At 488-503 K, the catalyst prepared in one phase solution with water/ethanol (W/E) volume ratio of 3:1 exhibited 90-95% EG selectivity, while catalyst prepared by two phase hydrolysis reached 90% EG selectivity only at 498-503 K.
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关键词:
- Ethanol
- / Cu/SiO2
- / TEOS
- / Hydrogenation
- / Dimethyl oxalate
- / Ethylene glycol
English
Effects of ethanol on the in situ synthesized Cu/SiC2 catalyst:Texture, structure, and the catalytic performance in hydrogenation dimethyl oxalate to ethylene glycol
Abstract:
The Cu/SiO2 catalysts were in situ synthesized by the hydrolysis of tetraethyl orthosilicate (TEOS) in one phase solution using ethanol as co-solvent or TEOS/H2O two phases solution, followed by the precipitation of copper on SiO2 by ammonia evaporation. In the hydrogenation of dimethyl oxalate, the catalyst prepared by one phase hydrolysis exhibited higher activity and ethylene glycol (EG) selectivity at lower temperature than that of two phases due to its larger BET surface area and multimodal pore distribution. At 488-503 K, the catalyst prepared in one phase solution with water/ethanol (W/E) volume ratio of 3:1 exhibited 90-95% EG selectivity, while catalyst prepared by two phase hydrolysis reached 90% EG selectivity only at 498-503 K.
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Key words:
- Ethanol
- / Cu/SiO2
- / TEOS
- / Hydrogenation
- / Dimethyl oxalate
- / Ethylene glycol
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