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钛硅沸石中非骨架钛的紫外谱图研究
引用本文:郭新闻,王祥生,李钢,张法智,周卓华.钛硅沸石中非骨架钛的紫外谱图研究[J].石油学报(石油加工),2001,17(2):61-67.
作者姓名:郭新闻  王祥生  李钢  张法智  周卓华
作者单位:大连理工大学
基金项目:国家自然科学基金委员会和中国石油化工集团公司联合资助(29792071)
摘    要:采用紫外漫反射(UV-Vis)光谱对不同方法合成的钛硅沸石的配位环境进行了初步的研究,发现参比物对钛硅沸石紫外图的峰位影响较大,不同方法合成的钛硅沸石中非骨架钛的存在形式不同。水热法中,以四丙基氢氧化铵(TPAOH)为模板剂合成的钛硅沸石中,非骨架钛以说钛矿型TiO2的形式存在;而以四丙基溴化铵(TPABr)为模板剂合成的钛硅沸石中,未能进入骨架的钛是以缩合的六配位形式(非说钛矿型和非金红石型)TiO2存在。气固相同晶取代法制备的钛硅沸石中,非骨架钛则是以锐钛矿型或金红石型TiO2的形式存在。

关 键 词:钛硅沸石  TS-1  TS-2  Ti-ZSM-5  Ti-ZSM-11  Ti-β  UV-Vis光谱  紫外谱图
文章编号:1001-8719(2001)02-0061-07
修稿时间:2000年2月13日

STUDIES ON THE EXTRA-FRAMEWORK TITANIUM IN THE TITANIUM SILICALITES BY UV-VIS SPECTROSCOPY
GUO Xin-wen,WANG Xiang-sheng,LI Gang,ZHANG Fa-zhi,ZHOU Zhuo-hua.STUDIES ON THE EXTRA-FRAMEWORK TITANIUM IN THE TITANIUM SILICALITES BY UV-VIS SPECTROSCOPY[J].Acta Petrolei Sinica (Petroleum Processing Section),2001,17(2):61-67.
Authors:GUO Xin-wen  WANG Xiang-sheng  LI Gang  ZHANG Fa-zhi  ZHOU Zhuo-hua
Abstract:The studies on extra framework titanium in titanium silicalites synthesized with different methods were carried out by UV Vis spectroscopy The results show that the reference has great effect on the peak position in the UV Vis spectra of the titanium silicalites and different methods of synthesis will lead to different existing form of the extra framework titanium In titanium silicalites synthesized by hydrothermal method,the extra framework titanium will exist in the form of anatase with TPAOH as the template,while with TPABr as the template,the extra framework titanium will exist in condensed hexacoordination form (non anatase and non rutile) In the titanium silicalites prepared by gas solid isomorphous replacement,the extra framework titanium will exist in the form of rutile or anatase
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