摘要
考察了H2 S对NiW /Al2 O3 和CoMo/Al2 O3 上二苯并噻吩(DBT)和4 ,6 二甲基二苯并噻吩(DMDBT)加氢脱硫反应的影响.结果表明,H2 S同时抑制DBT和DMDBT两种硫化物的加氢脱硫反应,并且对DBT的抑制作用更为明显.对于NiW /Al2 O3 和CoMo/Al2 O3 两种催化剂,H2 S抑制了DBT和DMDBT的直接脱硫路径活性;对于CoMo/Al2 O3 催化剂上DBT转化中的加氢反应也有抑制作用,但促进了DMDBT转化中加氢反应的进行.NiW/Al2 O3 催化剂更易受H2
The effects of H2S on the catalytic activity of sulfided NiW/Al2O3 and CoMo/Al2O3 for hydrodesulfurization (HDS) reaction of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) were investigated. The addition of H2S inhibited the HDS reactivity of DBT and DMDBT, but the effect on the HDS action of DBT was more obvious. In the HDS reaction of DBT and DMDBT over NiW/Al2O3, H2S inhibited the direct desulfurization and the hydrogenation routes. Similar inhibition occurred in the HDS reaction of DBT over CoMo/Al2O3, however, in the case of DMDBT, H2S suppressed direct desulfurization route while promoted hydrogenation route. NiW/Al2O3 was more susceptible to H2S than CoMo/Al2O3.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2005年第5期399-402,共4页
基金
国家重点基础研究发展规划项目 ( 973计划 ) (G2 0 0 0 0 480 0 3 )
关键词
硫化氢
镍
钨
钴
钼
氧化铝
负载型催化剂
二苯并噻吩
二甲基二苯并噻吩
加氢脱硫
hydrogen sulfide
nickel
tungsten
cobalt
molybdenum
alumina
supported catalyst
dibenzothiophene
dimethyldibenzothiophene
hydrodesulfurization
