摘要
采用银改性铜基催化剂用于草酸二甲酯(DMO)加氢制乙醇酸甲酯(MG)反应.结果表明,当DMO的转化率达到96%时,目的产物MG的选择性大于80%.1 000h的稳定性实验结果表明,催化剂反应至900h后存在一定程度的失活现象.结合XRD,FT-IR,TG-DSC,H2-TPR和ICP等表征手段,初步推断反应过程中的活性组分烧结、表面积碳和载体硅流失是该铜基催化剂失活的主要原因.
A kind of copper-based catalysts has been applied for the catalytic synthesis of methyl glycolate（MG） from hydrogenation of dimethyl oxalate（DMO）. The catalytic results show that a relatively high selectivity for MG （〉80%） can be given when the conversion of DMO reached 96%. Under our experimental conditions, the stabilities of the catalysts have been tested for the title reaction during 1 000 h. And it is found that a certain degree of deactivation appeared after the catalysts was investigated for 900 h. Combined with results from the technical characterizations from XRD, FT-IR, TG-DSC, H2-TPR and ICP, it is concluded that the sinterings of acitive components, the coke deposition and carrier silicon drain may be the main reason for the copper-based catalyst deactivation.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2012年第6期773-776,782,共5页
Journal of Fudan University：Natural Science
基金
上海市博士后基金重点资助项目(10R21420200)
关键词
草酸二甲酯
乙醇酸甲酯
铜基催化剂
稳定性
催化剂失活
dimethyl oxalate
methyl glycolate
copper-based catalysts
stability
catalyst deactivation
作者简介
廖湘洲（1982-），男，高级工程师（博士）；宁春利，高级工程师，通讯联系人，E-mail：clning@shhuayitec．com
张春雷，教授级高级工程师，通讯联系人，E-mail：clzhang@shhuayitec．com．
