Title of article
Effect of the Mg:Al Ratio on Borate (or Silicate)/Nitrate Exchange in Hydrotalcite
Author/Authors
Rives، V. نويسنده , , Arco، M. del نويسنده , , Gutiérrez، S. نويسنده , , Mart?n، C. نويسنده , , Rocha، J. نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2000
Pages
-271
From page
272
To page
0
Abstract
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 results. The layered structure of the exchanged samples collapses at temperatures higher than those for the nitrate-containing precursors.
Keywords
disorder of hydroxide ions , protonic conductivity. , H/D isotopic effects , differential scanning calorimetry , strontium hydroxide bromide , Raman spectroscopy
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Serial Year
2000
Journal title
JOURNAL OF SOLID STATE CHEMISTRY
Record number
56559
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