磷酸锡铝分子筛(SnAPO-5)的合成及性能研究

Studies on the Synthesis and Properties of Stannum Aluminophosphate Molecular Sieve

水热法合成了磷酸锡铝分子筛,并用X荧光分析其组成,X射线粉末衍射测定其晶胞参数。通过电子探针、穆斯堡尔谱、X射线光电子能谱及红外光谱等进行了结构分析。同时,研究了物化及催化性能。结果表明,读分子筛属于AlPO_(4-)5型分子筛的结构类型,Sn^(4+)位于分子筛骨架中。

The pure Stannum Aluminophosphate molecular sieve was synthesized by means of hy-drothermal method. The structure of stannum aluminophosphate molecular sieve (SnAPO-5) was studied by X-ray diffraction analysis, XPS, infrared spectroscopy, electron probe, Mossbauer spec-troscopy. The lattice parameters and chemical composition of SnAPO-5 were determined. Some physicochemical properties and catalytic activity of SnAPO-5 molecular sieve were investigated. These results shows that the structure of SnAPO-5 is AlPO4-5 type and Sn4+ does situate in the framework of the SnAPO-5 molecular sieve.