文献类型：期刊文献

中文题名：草酸二甲酯加氢制乙二醇催化剂失活研究:硫中毒

英文题名：Deactivation of Cu/SiO_2 catalyst for hydrogenation of dimethyl oxalate to ethylene glycol: sulfur poisoning

作者：张博[1];计扬[2];骆念军[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：3

起止页码：39

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;加氢催化剂;失活;硫中毒;草酸二甲酯;乙二醇

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

摘要：在DMO加氢制乙二醇过程中,Cu/SiO2催化剂出现了失活现象,通过采用低温氮气吸附、XRD、TEM、XRF及EDS表征对失活前后催化剂进行表征,发现催化剂失活是由于硫中毒。Cu/SiO2催化剂对硫很敏感,容易硫中毒,且其耐硫性比甲醇合成Cu/ZnO/Al2O3催化剂差。加氢Cu/SiO2催化剂硫中毒失活是一个快速的过程,含微量硫的原料反应90 h后,乙二醇收率降至5.67%。
In hydrogenation of dimethyl oxalate （DMO） to ethylene glycol （EG） over Cu/SiO2, catalyst deactivation was observed. The fresh and deactivated catalyst samples were characterized by N2-physisorption, X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy and X-ray fluorescence, and it was concluded that catalyst deactivation was due to sulfur poisoning. Cu/SiO2 catalysts employed in hydrogenation of DMO to EG were very sensitive to sulfur, and sulfur tolerances of them were lower than methanol synthesis catalysts （Cu/ZnO/Al2O3）. Sulfur poisoning was rapid, and trace amounts of sulfur in feedstock could reduce EG yield to only 5.67% in 90 hours.