Cation sites in ETS-10:: 23Na 3Q MAS NMR and lattice energy minimisation calculations

被引：44

作者：

Anderson, MW

Agger, JR

Luigi, DP

Baggaley, AK

Rocha, J

机构：

[1] UMIST, Ctr Microporous Mat, Dept Chem, Manchester M60 1QD, Lancs, England

[2] Univ Aveiro, Dept Chem, P-3800 Aveiro, Portugal

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1999年 / 1卷 / 09期

关键词：

D O I：

10.1039/a900863b

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Second-order quadrupolar broadening has rendered the study of cation sites in microporous materials almost impossible until the recent advent of the 2D multiple-quantum NMR experiment. In conjunction with computer lattice-energy-minimisation calculations we employ this powerful new technique to study the complex microporous titanosilicate ETS-10 and titanium aluminosilicate ETAS-10 systems. Evidence is presented for five unique cation sites differing greatly in their behaviour towards dehydration. Strong evidence is also given for preferential potassium cation siting.

引用

页码：2287 / 2292

页数：6

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