高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (4): 517.

• 研究快报 • 上一篇    下一篇

超细微MEL结构铜硅分子筛的合成及理化性质

唐祥海, 朱瑞芝, 潘履让, 李赫咺   

  1. 南开大学化学系, 天津 300071
  • 收稿日期:1999-07-13 出版日期:2000-04-24 发布日期:2000-04-24
  • 通讯作者: 唐祥海(1968年出生),男,博士,副教授,从事物理化学研究.
  • 基金资助:

    国家自然科学基金(批准号:29873024)

Synthesis and Physicochemical Properties of Ultrafine Coppersilicate with MEL Structure

TANG Xiang-Hai, ZHU Rui-Zhi, PAN Lü Rang, LI He-Xuan   

  1. Department of Chemistry, Nankai University, Tianjin 300071, China
  • Received:1999-07-13 Online:2000-04-24 Published:2000-04-24

PDF (PC)

被引次数

4

关键词: 铜硅分子筛, 超微粒, 水热晶化, MEL结构, 表征

Abstract: Ultrafine coppersilicate with MELstructure has been hydrothermally synthesized for the first time under static conditions. By means of XRD, TEM, FTIR, ESR, TGDTAand NH3 TPDthe physicochemical property of this novel material was investigated. It was revealed that the as synthesized coppersilicate, which was a uniform, monophase and ultrafine nanomaterial with crystallite size less than1×10-8 m , was highly crystalline and thermal stable. Cupric ions were highly dispersed and mainly resided in distorted tetrahedral and square pyramidal environments in the as synthesized as well as the calcined coppersilicates. Incorporation of copper ions into the framework during crystallization also resulted in a weak acidity of this material.

Key words: Coppersilicate, Ultrafine partical, Hydrothermal crystallizaion, MEL structure, Characterization

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