催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (12): 1196-1198.

• 研究快讯 • 上一篇    下一篇

以水热法合成的水合氧化锆为载体的Pt/WO3-ZrO2上的正己烷异构化

宋月芹1,康承琳1,冯延龙1,刘锋1,周晓龙1,董任遥1,徐龙伢2   

  1. 1 华东理工大学化工学院石油加工研究所, 上海 200237; 2 中国科学院大连化学物理研究所, 辽宁大连 116023
  • 收稿日期:2008-12-25 出版日期:2008-12-25 发布日期:2012-09-20

n-Hexane Isomerization by Pt/WO3-ZrO2 Using Hydrothermally Synthesized Hydrous Zirconia as Support

SONG Yueqin1, KANG Chenglin1, FENG Yanlong1, LIU Feng1, ZHOU Xiaolong1*, DONG Renyao1, XU Longya2   

  1. 1 Petroleum Processing Research Center, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China
  • Received:2008-12-25 Online:2008-12-25 Published:2012-09-20

PDF

1148

被引次数

13

摘要： 通过水热法合成了一系列水合氧化锆,以之为载体采用浸渍法制备了Pt/WO3-ZrO2催化剂,考察了氢氧化锆的水热温度对Pt/WO3-ZrO2异构化活性的影响. 通过X射线衍射、NH3程序升温脱附及H2程序升温还原表征了样品的晶相结构、酸性及还原性能. 结果表明,水合氧化锆及以此为载体的催化剂的晶相结构均随着氢氧化锆水热温度的变化而变化,水热温度升高,四方相氧化锆比例下降. 具有一定晶相结构的水合氧化锆为载体的催化剂具有较无定形氢氧化锆为载体的催化剂更多的强酸中心和更高的异构化催化活性. 高的异构化活性可能与催化剂上更多的强酸中心有关.

关键词: 水热合成, 水合氧化锆, 氧化钨, 铂, 正己烷, 异构化

Abstract: A Pt/WO3-ZrO2 catalyst was prepared by impregnating hydrous zirconia synthe sized by the hydrothermal method. The effect of hydrothermal conditions of Z r(OH) 4 on the isomerization behavior of the catalyst was investigated. The present ca talyst showed interesting isomerization behavior. The catalyst prepared using cr ystalline zirconia as the support possessed a higher isomerization activity than that prepared using amorphous zirconium hydroxide as the support.

Key words: hydrothermal synthesis, hydrous zirconia, tungsten oxide, platinum, n-hexane, isomerization