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 shu

Effects of ethanol on the in situ synthesized Cu/SiC₂ catalyst:Texture, structure, and the catalytic performance in hydrogenation dimethyl oxalate to ethylene glycol

State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

Received Date: 21 June 2010

Fund Project: This work was supported by the International Science and Technology Cooperation Program (No. 2009DFA61050), National High Technology Research and Development Program of China (863 program) (Nos. 2007AA05Z334 & 2009AA05Z407), and National Basic Research Program of China (No. 2007CB210200).

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.
- Ethanol,
- Cu/SiO₂,
- TEOS,
- Hydrogenation,
- Dimethyl oxalate,
- Ethylene glycol
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