铝锗酸盐分子筛KAlGe_3O_8的合成与结构  

Synthesis and Structure of a New Aluminum Germanate Molecular Sieve KAlGe_3O_8

作　　者：刘志城[1] 陈珍霞[1] 翁林红[1] 屠波[1] 赵东元[1] 

机构地区：[1]复旦大学化学系,上海200433

出　　处：《复旦学报（自然科学版）》2003年第6期961-966,共6页Journal of Fudan University：Natural Science

基　　金：国家杰出青年基金(9925309);上海市科技重点基金资助项目(00JC14014)

摘　　要：在KOH GeO2 Al2O3 H2O 有机胺(二正丁胺、环己胺、二异丙胺、正丙胺、三正丁胺、哌啶、1,3 丙二胺、三乙烯四胺和溴化四丙基铵)体系中,采用水热法合成了一种新的锗铝酸盐分子筛KAlGe3O8.X射线单晶结构分析表明其结构与硅铝酸盐矿物paracelsian的类似,是由四元环带组成的4,6,8的空间网络结构,钾离子占据其八元环孔道中.KAlGe3O8的结晶学参数:Mr=411.85,正交晶系,Pnma,a=9.437(3) ,b=8.707(2) ,c=9.825(3) ,V=807.3(4) 3,Z=4,R(F)=3.92%,wR(F2)=8.57%.A new aluminum germanate molecular sieve, KAlGe_(3)O_(8), has been hydrothermallysynthesized in the system of KOH-GeO_(2)-Al_(2)O_(3)-H_(2)O-organic amines (di-n-butylamine, cyclohexylamine, di-iso-propylamine, n-propylamine, tri-n-butylamine, hexahydropyridine 1,3-diaminepropane, triethylenetetramine and TPABr). Single-crystal X-ray analysis reveals that its framework structure has a 4,6,8 network constructed by belts of 4-membered ring, whose topology is analogue to the mineral paracelsia. K^(+) ions are accommodated in its 8-membered rings channels. Crystal data of KAlGe_(3)O_(8): M_r=411.85, orthorhombic, Pnma, a=9.437(3), b=8.707(2), c=9.825(3) ?, V=807.3(4) ?^(3), Z=4, R(F)=3.92%, wR(F^(2))=8.57%.

关 键 词：铝锗酸盐 分子筛 合成 结构 水热法 

分 类 号：TQ424.25[化学工程]