高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (3): 346.

• 论文 • 上一篇    下一篇

硅钨系列三元杂多阴离子柱撑水滑石的合成、表征及其酸碱催化性能

郭军1, 孙铁1, 沈剑平1, 刘丹1, 蒋大振1, 闵恩泽2   

  1. 1. 吉林大学化学系, 长春 130023;
    2. 石油化工科学研究院, 北京 100083
  • 收稿日期:1994-05-31 修回日期:1994-10-08 出版日期:1995-03-24 发布日期:1995-03-24
  • 通讯作者: 郭军,男,29岁,博士,讲师.
  • 作者简介:郭军,男,29岁,博士,讲师.
  • 基金资助:

    国家自然科学基金

Synthesis, Characterization and Acid-Base Properties of Layered Double Hydroxides Pillared with Tungstosilicate Anions

GUO Jun1, SUN Tie1, SHEN Jian-Ping1, LIU Dan1, DANG Da-Zhen1, MIN En-Ze2   

  1. 1. Department of Chemistry, Jilin University, Changchun 130023;
    2. Research Institute of Petroleum Processing, Beijing 100083
  • Received:1994-05-31 Revised:1994-10-08 Online:1995-03-24 Published:1995-03-24

摘要: 从NO3-LDH出发,通过直接交换反应合成了具有Keggin结构的杂多阴离子SiW11M·(H2O)O(M为第一系列过渡金属)柱撑水滑石,用元素分析、XRD、IR和DTA对产物的组成和结构进行了表征。结果表明,杂多阴离子进入水滑石层间,使水滑石的层间距从0.92nm增加到1.47nm,且热稳定性有所提高。柱撑产物在异丙醇反应中表现出酸碱双功能催化作用,但酸催化占明显优势。

关键词: 硅钨杂多阴离子, 柱撑水滑石, 合成与表征, 酸碱性

Abstract: Layered double hydroxides(LDHs) pillared with heteropolyanions,SiW11M·(H2O)O396-(Mis the first row transition metals),were synthesized by means of direct ion-exchange reaction and were characterized by elementary analysis,XRD,IR and DTA.The results show that the interlayer space of the pillared products increase from 0.92 nm to 1.47 nm,and there is an increase in the thermal stability of the pillared product with the heteropolyanion intercalating into the LDH. The pillared prodticts shows the acid-base bifunctional catalysis over the isopropanol conversion,and the acidity is relatively stronger.

Key words: Tungstosilicate heteropolyanions, Pillared LDHs, Synthesis and characterization, Acid-base property

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