文献类型：期刊文献

英文题名：In situ IR study of dimethyl oxalate hydrogenation to ethylene glycol over Cu/SiO₂ catalyst

作者：Hui, Shengguo[1];Zhang, Bo[1];Zhang, Suhua[1];Li, Wei[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2012

卷号：21

期号：6

起止页码：753

外文期刊名：JOURNAL OF NATURAL GAS CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000316927000019)】；

语种：英文

外文关键词：dimethyl oxalate; ethylene glycol; FTIR; hydrogenation; Cu/SiO2

摘要：The mechanism of dimethyl oxalate hydrogenation to ethylene glycol over Cu/SiO2 catalyst was investigated by in situ Fourier transform infrared (FTIR) spectroscopy. It was found that dimethyl oxalate and methyl glycolate proceeded via dissociative adsorption on Cu/SiO2 catalyst, and four main intermediates, CH3OC(O)(O)C-M (1655 cm(-1)), M-C(O)(O)C-M (1618 cm(-1)), HOCH2(O)C-M (1682.cm(-1)) and CH3O-M (2924-2926 cm(-1)), were identified during the reaction. It was concluded that dimethyl oxalate hydrogenation to ethylene glycol mainly proceeded along the route: dimethyl oxalate -> CH3OC(O)(O)C-M -> methyl glycolate -> HOCH2(O)C-M ethylene glycol. Finally a schematic reaction network was proposed.