Topotactic condensation of layer silicates with ferrierite-type layers forming porous tectosilicates
作者:B. Marler、Y. Wang、J. Song、H. Gies
DOI:10.1039/c4dt00262h
日期:——
Five different hydrous layer silicates (HLSs) containing fer layers (ferrierite-type layers) were obtained by hydrothermal syntheses from mixtures of silicic acid, water and tetraalkylammonium/tetraalkylphosphonium hydroxides. The organic cations had been added as structure directing agents (SDA). A characteristic feature of the structures is the presence of strong to medium strong hydrogen bonds between
通过水热合成,从硅酸,水和氢氧化四烷基铵/四烷基phosph的混合物中获得了五种不同的含水层硅酸盐(HLSs),它们包含铁层(镁碱沸石型层)。已添加有机阳离子作为结构导向剂(SDA)。结构的特征是在相邻层的末端硅烷醇/甲硅烷氧基之间存在强至中强氢键。五层硅酸盐仅在有机阳离子方面在化学上有所不同。在结构上,它们相对于所述的排列不同的FER层相对于彼此,这是不同的,每SDA- FER层系统。RUB-20(含有四甲基铵)和RUB-40(四甲基鏻)是单斜晶系堆积顺序AAA和位移矢量连续层1之间一个0 + 0 b 0 + 0.19 c ^ 0和1一0 + 0 b 0 + 0.24 Ç 0,分别。RUB-36(二乙基二甲基),RUB-38(甲基三乙基铵)和RUB-48(trimethylisopropylammonium)是斜方晶系与堆叠序列ABAB和位移矢量0.5一0 + 0 b 0 ±0.36 Ç