文献类型：期刊文献

中文题名：草酸二甲酯加氢制乙二醇Cu/SiO_2催化剂失活机理的研究

英文题名：Study on deactivation mechanism of Cu/SiO_2 catalyst for hydrogenation of dimethyl oxalate to ethylene glycol

作者：张博[1];张素华[1];惠胜国[1];计扬[2];李伟[1];房鼎业[1]

机构：[1]华东理工大学化学工程国家重点实验室,上海200237;[2]上海浦景化工技术有限公司,上海200231

年份：2012

卷号：37

期号：4

起止页码：1

中文期刊名：天然气化工—C1化学与化工

外文期刊名：Natural Gas Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：Cu;SiO2催化剂;失活机理;草酸二甲酯;加氢;乙二醇

外文关键词：Cu/SiO2 catalyst; deactivation mechanism; dimethyl oxalate; hydrogenation; ethylene glycol

摘要：通过快速老化实验研究了草酸二甲酯加氢制乙二醇Cu/SiO2催化剂的失活。采用XRD、低温N2吸附、TEM及TG对失活前后催化剂进行了表征,发现催化剂失活原因为热烧结、积炭及活性组分铜的价态变化。还研究了各种失活原因之间的内在联系,并提出了较为合理的失活机理。
The deactivation mechanism of Cu/SiO2 catalysts for hydrogenation of dimethyl oxalate （DMO） was investigated by a well-designed rapid aging treatment experiment. The structure and texture of working and deactivated catalysts were characterized by XRD, NE-physisorption, TEM, and TG. Based on the characterization results, the deactivation was attributed to a number of factors like sintering, carbonaceous deposits, and valence transition of copper species. The intrinsic relations between catalysts deactivation and sintering, carbonaceous deposits, and valence transition were discussed, and a deactivation mechanism of Cu/SiO2 catalysts was proposed.