聚多巴胺修饰的SBA-15负载钌催化剂催化苯部分加氢  

Benzene hydrogenation over polydopamine-modified SBA-15 supported ruthenium catalyst

作　　者：廖红光[1] 肖艳娟 魏义兰 李崇裔 余小光[1] 张翔[1] Liao Hongguang;Xiao Yanjuan;Wei Yilan;Li Chongyi;Yu Xiaoguang;Zhang Xiang(College of Chemical Engineering,Hunan Chemical Vocational Technology College,Zhuzhou Hunan 412000,China)

机构地区：[1]湖南化工职业技术学院化学工程学院,湖南株洲412000

出　　处：《石油化工》2019年第2期109-114,共6页Petrochemical Technology

基　　金：湖南省教育厅资助科研项目(14C0385);湖南化工职业技术学院博士科研基金资助项目(HNHY2018D02)

摘　　要：以过碘酸钠为氧化聚合诱导剂,在微酸性条件下(pH=5.0)合成了聚多巴胺修饰的分子筛载体。采用环己烷-水双溶剂法,制备了聚多巴胺修饰的SBA-15负载钌催化剂,并对催化剂进行了表征。实验结果表明,聚多巴胺能显著提高催化剂的亲水性,修饰后的催化剂在苯部分加氢反应中表现出高环己烯选择性;采用该催化剂,苯转化率为63.2%时,环己烯收率可达51.8%;聚多巴胺的引入不会影响SBA-15长程有序的介孔结构,催化剂具有适中的比表面积和良好的钌分散度。Polydopamine-modified SBA-15 was prepared by sodium periodate-induced polymerization in a slightly acidic environment(pH 5.0). Polydopamine-modified Ru supported SBA- 15 catalyst was prepared via cyclohexane-water double solvent method. The catalyst was characterized. It has been found that polydopamine can obviously enhance the catalyst hydrophilicity. The modified catalyst showed excellent high cyclohexene selectivity in benzene hydrogenation. With the catalyst, when benzene conversion was 63.2%,cyclohexene yield reached 51.8%. The introduction of the polydopamine did not affect the long-range order of mesoporous structure. The catalyst had moderate specific surface area and excellent ruthenium dispersion.

关 键 词：苯部分加氢 环己烯 聚多巴胺 SBA-15分子筛 亲水性 钌催化剂 

分 类 号：TQ426[化学工程]