Ni改性杂多酸催化氧化超深度脱除烷基噻吩硫的研究  

Study on the Ultra-Deep Removal of Alkyl Thiophene by Nickel-Modification-Heteropoly-Acids Catalytic Oxidation

作　　者：王磊[1] 徐艳艳[1] 李书珍[1] 蔡海军 沈本贤[3] 

机构地区：[1]上海应用技术学院,上海201418 [2]中石油乌石化炼油厂,新疆乌鲁木齐830019 [3]华东理工大学,上海200237

出　　处：《安徽师范大学学报（自然科学版）》2012年第6期550-554,共5页Journal of Anhui Normal University(Natural Science)

基　　金：上海科技创新(09YZ88);上海联盟计划(LM2011)

摘　　要：以硅胶为载体,Ni改性磷钨杂多酸为主剂,采用过饱和二次浸渍的方法制备了负载型杂多酸超深度脱硫催化剂.分别以烷基噻吩的正辛烷体系和催化裂化(FCC)汽油为研究对象,考查了Ni负载量、催化剂焙烧温度、催化剂的用量、反应时间、反应温度、氧化剂用量等条件对脱除烷基噻吩硫效果的影响;研究结果表明脱除烷基噻吩硫的适宜条件为:催化剂量为0.15g/50mL,氧化剂量为0.3mL/50mL,反应温度为60℃,反应时间3h.在此条件下,模拟体系的烷基噻吩硫的脱除率为100%,FCC汽油的脱硫率为97.3%,精制油收率不低于99%.并探究了负载型Ni改性杂多酸催化氧化脱除烷基噻吩硫的反应机理.Using silica gel as carrier and Ni modified phosphorus heteropoly tungstic acid （HPW） as the main agent, the loaded catalyst for ultra deep desulfurization was prepared by supersaturated impregnation method. The effect of Nickel loading amount, the catalyst calcination temperature, the catalyst amount, the reaction time, the reaction temperature and the oxidant dose on the removal of alkyl thiophene from the alkyl thiophene solution of normal octane and FCC gasoline, respectively, was investigated. Research results show that the suitable conditions on the removal of alkyl thiophene were catalyst amount 0.15g/50mL, oxidation dose 0.3mL/ 50mL, reaction temperature 60℃ and reaction time 3h. Under the above optimized conditions, the alkyl thiophene removal rate up to 100% for model compounds and 97.3% for FCC gasoline, respectively, was achieved, and the refined oil yield was no less than 99 %. The catalytic oxidation mechanism on the removal of alkyl thiophene, catalyzed by the loaded phosphorus heteropoly tungstic acid which was modified by Ni, was also studied.

关 键 词：Ni改性杂多酸 催化氧化 超深度脱硫 烷基噻吩 

分 类 号：TQ424.25[化学工程] TE624.55[石油与天然气工程—油气加工工程]