铜锰双金属氧化物催化的液相甲苯氧化反应

催化学报 , 2006, 27(5): 369-371.

铜锰双金属氧化物催化的液相甲苯氧化反应

李晓强 ^1, , 徐杰 ^2, , 周利鹏 ^3, , 高进 ^4, , 王峰 ^5, , 陈晨 ^6,

1.中国科学院大连化学物理研究所,辽宁大连,116023;中国科学院研究生院,北京,100049

2.中国科学院大连化学物理研究所,辽宁大连,116023

3.中国科学院大连化学物理研究所,辽宁大连,116023

4.中国科学院大连化学物理研究所,辽宁大连,116023

5.中国科学院大连化学物理研究所,辽宁大连,116023

6.中国科学院大连化学物理研究所,辽宁大连,116023

基金项目: the National High Technology Research and Development Program of China(2002AA321020,2004GA321020) 中国科学院资助项目(20233040)

关键词：甲苯 , 液相氧化 , 铜锰氧化物

Heterogeneous Catalytic Oxidation of Toluene with Molecular Oxygen over Cu-Mn Oxides

Keywords： toluene , liquid-phase oxidation , copper manganese oxide

工业上甲苯氧化反应采用均相醋酸钴催化剂,以溴化物为促进剂在乙酸溶液中进行. 乙酸和溴化物的使用使催化剂的分离和回收非常困难,并非常容易腐蚀设备; 另外很容易形成大量有毒废液对环境造成污染. 本文以共沉淀法制备的铜锰氧化物为催化剂,在无溶剂的条件下进行了甲苯液相氧化反应,得到了较好的催化效果. 催化剂最佳Cu:Mn摩尔比为1:1, 此时催化剂的主要物相为Cu1.5Mn1.5O4.

Cu-Mn oxides prepared by the coprecipitation method were employed in the liquid-phase oxidation of toluene with molecular oxygen in the absence of solvent. The molar ratio of Cu∶Mn for the best performance of the Cu-Mn oxides in the toluene oxidation is 1∶1. X-ray diffraction characterization shows that the Cu-Mn oxide with a Cu∶Mn ratio of 1∶1 consists of Cu1.5Mn1.5O4.

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