GAM-4: a novel microporous silicoaluminophosphate crystal formed by the interzeolite conversion of SAPO-5 zeolite
GAM-4: a novel microporous silicoaluminophosphate crystal formed by the interzeolite conversion of SAPO-5 zeolite
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DOI：
10.1007/s10934-021-01183-0
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发表时间：
2022-01
影响因子：
2.6
通讯作者：
K. Komura;Hisakazu Aoki;T. Ikeda
中科院分区：
文献类型：
--
作者：
K. Komura;Hisakazu Aoki;T. Ikeda
以环仲胺吡咯烷为有机结构导向剂（OSDA），对具有AFI拓扑结构的硅铝磷酸盐型分子筛SAPO-5进行了分子筛间转化。SAPO-5分子筛中SiO2的引入量严重影响了产物的骨架结构，SiO2含量降低最小的SAPO-5分子筛通过相互转化成功地生成了一种新型拓扑晶体GAM-4。结构分析表明，GAM-4是一种由四面体（4-，5-和6-配位）Al原子和四面体P原子构成的具有沿着a轴一维10环孔道的新型开骨架微孔晶体。
The interzeolite conversion of silicoaluminophosphate-type zeolite, SAPO-5 with AFI topology, was performed using a cyclic secondary amine, pyrrolidine, as an organic structure-directing-agent (OSDA). The introduced quantity of silica (SiO2) in SAPO-5 zeolite severely affected the framework structures of the products formed, and SAPO-5 possessing minimally reduced SiO2content caused the interconversion to successfully yield a novel topological crystal, designated as GAM-4. Structural elucidation revealed that GAM-4 is found to be a new open-framework microporous crystal with 1-dimensional 10-ring channels along thea-axis constructing by polyhedral (4-, 5-, and 6-coordinated) Al and tetrahedral P atoms.