摘要
第四周期过渡金属对乙苯脱氢催化剂的助催化作用祝以湘,夏明,何淡云(化工系物理化学研究所)Fe_2O_3-K_2O系乙苯脱氢催化剂一般由铁、碱/碱土金属和过渡金属氧化物三部分组分。后者中,第四周期过渡金属经常被各种牌号的工业催化剂所选用(表1)。人们曾...
The 4th period transition metals were added respectively to Fe_2O_3-K_2Ocatalysts and the resuiting effects on cataytic activity and selectivity were studied A vol-cano-shaped relationship was obtained by plotting the specific activity values(r_s)of everycatalysts for styrene formation against the electronegaivities (Xp)of the transition metals. added.The volcano-shaped relaionship was also found between the specific activities fortoluene formation(r_T)and Xp. But,no such relationship was seen in r_B-Xp and selectivityfor styrene formation-XP.
出处
《厦门大学学报(自然科学版)》
CAS
CSCD
北大核心
1994年第4期561-564,共4页
Journal of Xiamen University:Natural Science
基金
中国石化总公司资助项目
关键词
过渡元素
乙苯
脱氢
催化剂
助催化
Dehydrogenation of ethylbezene,Electronegativity Transition matalpromoter