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] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, 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：EI(收录号：20125115808610)

语种：英文

外文关键词：Polyols - Hydrogenation - Oxalic acid - Reaction intermediates - Catalysts - Ethylene - Fourier transform infrared spectroscopy

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. ? 2012 CAS/DICP.