Vibrational spectroscopic study of the nitrate containing hydrotalcite mbobomkulite

被引：20

作者：

Frost, RL ^{[1
]}

Erickson, KL ^{[1
]}

Kloprogge, TJ ^{[1
]}

机构：

[1] Queensland Univ Technol, Sch Phys & Chem Sci, Inorgan Mat Res Program, Brisbane, Qld 4001, Australia

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2005年 / 61卷 / 13-14期

基金：

澳大利亚研究理事会;

关键词：

mbobomkulite; stitchtite; iowaite; desautelsite; takovite; hydrotalcite; Raman spectroscopy;

D O I：

10.1016/j.saa.2004.11.002

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Raman spectroscopy has been used to study the nitrate hydrotalcite mbobomkulite NiAl2(OH)(16)(NO3)(.)4H(2)O. Mbobomkulite along with hydrombobomkulite and sveite are known as 'cave' minerals as these hydrotalcites are only found in caves. Two types of nitrate anion are observed using Raman spectroscopy namely free or non-hydrogen bonded nitrate and nitrate hydrogen bonded to the interlayer water and to the 'brucite-like' hydroxyl surface. Two bands are observed in the Raman spectrum of Ni-mbobomkulite at 3576 and 3647 cm(-1) with an intensity ratio of 3.36/7.37 and are attributed to the Ni3OH and Al3OH stretching vibrations. The observation of multiple water stretching vibrations implies that there are different types of water present in the hydrotalcite structure. Such types of water would result from different hydrogen bond structures. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：2919 / 2925

页数：7

共 17 条

[1] ION-PAIR FORMATION AND ANION RELAXATION IN AQUEOUS-SOLUTIONS OF GROUP-1 PERCHLORATES - A RAMAN SPECTRAL STUDY [J].