摘要
采用共沉淀法制备了无负载Ru-Zn催化剂,通过XRD、BET、XPS、H2-TPR和H2-TPD等方法对其进行了表征。结果表明,催化剂为晶态结构,Zn在催化剂中以元素态Zn和ZnO两种形式存在。适量Zn的引入,催化剂平均孔径明显增大,可吸附更多的H2,有利于提高环己烯的选择性。
The unsupported Ru-Zn catalyst was prepared by the co-precipitation method and characterized by means of XRD, BET, XPS, H2-TPR and H2-TPD. The results show that ruthenium-zinc forms the crystal state and zinc exists in elemental state and oxide state. The average pore diameter of the catalyst with the suitable zinc content is increased, which is beneficial to the sorption of hydrogenation and can improve the selectivity of eyclohexene.
出处
《河北化工》
CAS
2009年第4期16-18,共3页
Hebei Chemical Industry
关键词
苯加氢
环己烯
Ru-Zn催化剂
表征
hydrogenation of benzene
cyelohexene
Ru-Zn catalyst
characterization
