摘要
采用固体混合酸在搅拌反应釜中催化FCC汽油进行烷基化硫转移反应,研究了载体催化剂在不同硅铝质量比下的B酸、L酸和总酸含量、催化剂混合酸的负载量、混合酸的质量比以及不同焙烧温度对酸量的影响,考察了酸分布、酸量与催化剂催化活性的关系,分析了FCC汽油烷基化反应前后的烃组成和辛烷值。结果表明：当载体中w（Si）为0.6~0.7时,催化剂中B酸含量最大;当混合酸负载量为60%,焙烧温度为500~550℃时,催化剂的总酸量最大,此时催化剂烷基化硫转移反应的活性最高,噻吩硫的转移率达到93.7%。在烷基化反应前后,FCC汽油油品的组成变化不大,烯烃含量略有降低,辛烷值下降0.2个单位。
Solid compound acid catalyst exhibited good sulphur transfer activity for catalyzing alkylation of thiophene with olefins.The effect of total acid amount including Brown acid and Lewis acid in solid compound acid catalyst with different loading ratio of silica and aluminum,load of compound acid,mass ratio of compound acids and calcine temperature on the catalyst activity was investigated.Solid compound acid catalyst showed the highest sulphur transfer activity with 93.7% conversion of thiophene under the condition of mass ratio of Si/（Si＋Al） between 0.6 and 0.7 in load,60% of compound acid on loading and the calcine temperature of catalyst between 500 ℃ and 550 ℃.The hydrocarbon component hardly changed,olefine content decreased slightly and the octane value of gasoline reduced by 0.2 unit after the alkylation reaction.
出处
《华东理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第5期633-638,共6页
Journal of East China University of Science and Technology
基金
中国天然气股份有限公司资助项目(2008B-3101)
关键词
固体混合酸
烷基化
硫转移
FCC汽油
solid compound acid
alkylation
sulphur transfer
FCC gasoline
