摘要
用X射线单晶衍射方法测定了晶体尺寸为150μm×100μm的SAPO-5分子筛的晶体结构.结果表明,SAPO-5属六方晶系,空间群P_6cc,晶胞参数a=1.3802nm,c=0.8503nm,权重偏离因子R_w=0.043.F^-离子位于2个四元环中间.电子探针分析结果表明,硅只取代磷进入SAPO-5分子筛骨架.
The SAPO-5 single crystals with the size of 150μ×100μm crystallized in space group P6cc with a=1.3802 nm and c=0.8503 nm.The crystal structure was refined to Rw=0.043.F-anions are located on the wall of the framework between two four-membered rings.Electron probe microanalysis (EPMA) shows that silicon is only substituted for phosphorus.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1992年第9期1165-1167,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金
关键词
分子筛
SAPO-5
单晶结构
Molecular sieve,SAPO-5,Single crystal structure,X-ray diffraction
