摘要
考察了含铌的V2 O5/TiO2 催化剂在邻二甲苯催化氧化制苯酐反应中的催化性能 ,并与不含铌的催化剂进行了比较 ,发现铌的加入能够显著降低催化剂的初始反应温度 ,提高催化剂在低温区的活性 ,且在较宽的温度范围内苯酐的选择性较高 ,有利于工业操作 ,用TPD、XRD。
A Nb promoter was added to the V 2O 5/TiO 2 catalyst for the oxidation of o-xylene to phthalic anhydride. The influence of the content of Nb on the catalyst activity and phthalic anhydride selectivity was investigated.The acid property was characterized by pyridine-adsorption and temperature-programmed desorption,and redox properties were studied by XPS.
出处
《石油化工》
CAS
CSCD
北大核心
2001年第9期665-668,共4页
Petrochemical Technology
