Effect of the Mg:Al ratio on borate (or silicate)/nitrate exchange in hydrotalcite

被引：97

作者：

del Arco, M

Gutíerrez, S

Martín, C

Rives, V ^{[1
]}

Rocha, J

机构：

[1] Univ Salamanca, Dept Quim Inorgan, E-37008 Salamanca, Spain

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

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2000年 / 151卷 / 02期

关键词：

D O I：

10.1006/jssc.2000.8653

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Layered double hydroxides (LDHs) have been prepared with interlayer nitrate and with different Mg:Al ratios. Solids with low Mg:Al ratios show larger basal spacings than those with larger Mg:Al ratios, consistent with tilting of the nitrate ions, respectively. Nitrate/tetraborate and nitrate/silicate anionic exchange has been achieved only for those samples with "tilted" nitrate. The precise nature of the interlayer species in the exchanged samples has been concluded from MAS-NMR IR results. The layered structure of the exchanged samples collapses at temperatures higher than those for the nitrate-containing precursors. (C) 2000 Academic Press.

引用

页码：272 / 280

页数：9

共 44 条

[1] NEW TRIBORATE-PILLARED HYDROTALCITES [J].