New heavy metal-hydro-sodalites containing Cd2+, Ag+ or Pb2+:: synthesis by ion-exchange and characterisation

被引：15

作者：

Eiden-Assmann, S ^{[1
]}

机构：

[1] Univ Konstanz, Fachbereich Phys, D-78457 Constance, Germany

来源：

MATERIALS RESEARCH BULLETIN | 2002年 / 37卷 / 05期

关键词：

microporous materials; chemical synthesis; X-ray diffraction; EXAFS; NMR; TGA;

D O I：

10.1016/S0025-5408(02)00715-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ion-exchange of the sodium-hydro-sodalites [Na-4(OH)(H2O)](2)[Al3Si3O12](2), [Na-4(OH)](2)[Al(3)Si(3)O12](2), [Na-3(H2O)(4)](2)[Al3Si3O12](2) have been studied in a variety of solutions. The synthesis parameters were determined for the three sodium-hydro-sodalites with Cd2+, Cu2+, Zn2+, Ag+ and Pb2+. The ion-exchange with silver, lead, and cadmium cations was found to yield pure sodalite phases, whereas with copper and zinc cations no pure sodalite phases were obtained due to Cu(OH)(2) and Zn(OH)(2) precipitation upon or within the sodalites. The new sodalite phases were characterised by X-ray powder diffraction, thermogravimetry, IR-, H-1-MASNMR-, and X-ray absorption spectroscopy. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：875 / 889

页数：15

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