锌硅分子筛VPI-7的合成及表征  

The Synthesis and Characterization of Zincosilicate VPI-7

作　　者：荆学珍[1] 徐红[1] 樊明明[1] 董晋湘[1] 

机构地区：[1]太原理工大学精细化工研究所,太原030024

出　　处：《无机化学学报》2002年第2期177-180,共4页Chinese Journal of Inorganic Chemistry

基　　金：山西省青年学科带头人培养基金资助项目

摘　　要：本文在Na2O-ZnO-SiO2-H2O水热体系中研究了温度、Na2O/SiO2、SiO2/ZnO对合成锌硅分子筛VPI-7的影响,并以XRD、SEM、FT-IR等手段对晶化产物进行表征。实验表明:(1)SiO2/ZnO比在3.5～10的范围内,可以合成VPI-7的纯相,且随着SiO2/ZnO比的增加,产物的相对结晶度增大;(2)合成产物中SiO2/ZnO比的变化不随反应物中SiO2/ZnO比的变化而线性变化,证明Zn在VPI-7中是有序排列的。参考硅铝沸石的红外光谱研究结果,对VPI-7的FT-IR谱图进行了简要的归属。It was studied the hydrothermal. synthesis of molecular sieve VPI-7 in Na2O-ZnO-SiO2-H2O system and mainly studied the influence of temperature, Na2O/SiO2, SiO2/ZnO on the synthesis. At the same time, the product was characterized by XRD, SEM and FT-IR. The results showed that: ( 1) pure VPI-7 can be synthesized when the ratio Of SiO2/ZnO was in the range of 3.5 similar to 10, and with the increase of SiO2/ZnO, the crystallinity of the product increased; (2) SiO2/ZnO of the synthesized product was not in relation with that of the reactant linearly, which confirmed that the atom of Zn was orderly located in VPI-7. Referring the explaination of IR spectrum of aluminosilicate zeolite, the adscription of FT-IR data has been done briefly.

关 键 词：锌硅分子筛 VPI-7 合成 表征 水热体系 氧化钠 氧化锌 二氧化硅 

分 类 号：TQ424.25[化学工程]