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.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
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
