CO气相偶联合成草酸二乙酯Pd-Fe/α-Al_2O_3催化剂研究  

Study of Pd-Fe/Al_2O_3 Catalyst for CO Coupling to Diethyl Oxalate

作　　者：尹东学[1] 李振花[1] 项铁丽[1] 王保伟[1] 马新宾[1] 许根慧[1] 

机构地区：[1]天津大学化工学院绿色合成与转化教育部重点实验室,天津300072

出　　处：《天然气化工—C1化学与化工》2004年第2期20-23,共4页Natural Gas Chemical Industry

基　　金：国家"九五"科技攻关项目 (96- 53 9- 0 1 )

摘　　要：利用化学吸附仪以及XPS、BET等技术,对由α Al2O3载体制得的催化剂的比表面、孔分布、晶相及反应前催化剂表面组成进行了分析表征,考察了用于CO气相催化偶联制草酸二乙酯的负载型Pd Fe/α Al2O3双金属催化剂的活性。研究表明:比表面是影响反应活性和选择性的因素之一,孔结构均匀、合理的催化剂使反应的时空收率比较稳定,一氧化碳的转化率较高。XPS, BET and chemisorption apparatus was employed to study the activity of Pd-Fe/α-Al_2O_3 which was used as catalyst in the reaction of CO gaseous phase coupling to diethyl oxalate. Specific surface area, distribution of pores, crystalline phase of the prepared Pd-Fe/α-Al_2O_3 catalysts, and surface composition of the fresh catalyst were analyzed and characterized by the methods mentioned above. The results indicate that the special surface area of catalyst is one of the most important factors that affect the reactive activity and the selectivity of catalyst. It was also found that homogeneous structure of pores and appropriate catalyst can result in stable space-time yield and high conversion of CO.

关 键 词：草酸二乙酯 一氧化碳 Pd—Fe/A12O3 偶联 比表面 

分 类 号：TQ21[化学工程—有机化工]