介孔纳米氧化铝的制备、表征及其应用  

Preparation,characterization and application of mesoporous nano-alumina

作　　者：姜健准[1] 张明森[1] 郭敬杭[1] 柯丽[1] 

机构地区：[1]中国石油化工股份有限公司北京化工研究院,北京100013

出　　处：《工业催化》2013年第8期37-40,共4页Industrial Catalysis

摘　　要：以聚醚胺——O,O'-二(2-氨基丙基)聚丙二醇-嵌段-聚乙二醇-嵌段-聚丙二醇为模板剂,异丙醇铝为铝源,采用溶胶-凝胶法制备了蠕虫状介孔纳米氧化铝,比表面积为341.1 m2.g-1,平均孔径17.4 nm,孔体积1.54 cm3.g-1,并探讨了其在异丙醇脱水制丙烯反应中的应用。结果表明,介孔纳米氧化铝是一种高效的异丙醇脱水制丙烯催化剂,当异丙醇空速分别为0.5 h-1、1.0 h-1和2.0 h-1以及反应温度分别为(230～320)℃、(250～340)℃和(260～350)℃时,异丙醇转化率大于99.0%,丙烯选择性大于98.5%。Using aluminum isopropoxide as the aluminum source and O, O＇-bis （2-aminopropyl） polypro- pylene glycol-block-polyethylene glycol-block-polypropylene glycol as the template, ordered worm-like mesoporous nano-alumina was prepared by sol-gel method. The characterization results showed that the surface area, average pore diameter and pore volume of the calcined mesoporous alumina were 341.1 m2 · g-1,17.4 nm and 1.54 cm3 · g-1 ,respectively. The catalytic properties of the mesoporous nano alumina for the dehydration of isopropanol to propylene was investigated. The results indicated that the as-prepared mesoporous nano-alumina exhibited high catalytic activity. The conversion of isopropanol and the selectivity to propylene were more than 99.0% and 98.5%, respectively, when isopropanol WHSV was 0.5 h - 1,1.0 h - 1 and 2.0 h - 1 and the corresponding reaction temperature was controlled at the range of （230 - 320） ℃, （250 - 340）℃ and （260 - 350 ） ℃, respectively.

关 键 词：催化化学 介孔纳米氧化铝 异丙醇脱水 丙烯 

分 类 号：TQ426.94[化学工程] TQ223.123