摘要
以Ni为主并引入其它3种金属元素,制成了系列催化剂;考察了催化剂上苯直接氧化制苯酚反应的活性,并用XRD,TPR及XPS对这一系列催化剂进行表征。结果发现,在本文条件下Ni负载量为3%(mass)的催化剂效果最好,该系列催化剂的活性相是由高分散的Ni物种衍生而成的,晶相镍氧化物及单质镍对该反应贡献很小。
A series of Ni containing catalysts supported on γAl2O3 and promoted by other three components were prepared and characterized by XRD, TPR, XPS, and activity measurement for the direct oxidation of benzene to phenol The results show that the catalyst with Ni loading up to 3wt% has the highest activity The active phase for the target reaction may be originated from highly dispersed nickel oxide, while the presence of crystallite nickel oxides or nickel metal may reduce the activity
出处
《天然气化工—C1化学与化工》
CAS
CSCD
北大核心
2003年第2期14-18,共5页
Natural Gas Chemical Industry
基金
国家自然科学基金(2 0 0 72 0 2 4)资助项目
关键词
NI催化剂
苯
氧化
苯酚
Ni catalyst
benzene
oxidation
phenol
