A vibrational spectroscopic study of the silicate mineral pectolite - NaCa2Si3O8(OH)

被引：11
|
作者：
Frost, Ray L. [1 ]
Lopez, Andres [1 ]
Theiss, Frederick L. [1 ]
Romano, Antonio Wilson [2 ]
Scholz, Ricardo [3 ]
机构：
[1] Queensland Univ Technol, Fac Sci & Engn, Sch Chem Phys & Mech Engn, Brisbane, Qld 4001, Australia
[2] Univ Fed Minas Gerais, Dept Geol, BR-31270901 Belo Horizonte, MG, Brazil
[3] Univ Fed Ouro Preto, Sch Mines, Dept Geol, BR-3540000 Ouro Preto, MG, Brazil
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2015年 / 134卷
基金：
澳大利亚研究理事会;
关键词：
Silicate; Raman spectroscopy; Pectolite; Infrared spectroscopy; Molecular structure; RAMAN; TETRAHEDRA; CRYSTALS; GLASSES; PHASES;
D O I：
10.1016/j.saa.2014.06.097
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The mineral pectolite NaCa2Si3O8(OH) is a crystalline sodium calcium silicate which has the potential to be used in plaster boards and in other industrial applications. Raman bands at 974 and 1026 cm(-1) are assigned to the SiO stretching vibrations of linked units of Si3O8 units. Raman bands at 974 and 998 cm(-1) serve to identify Si3O8 units. The broad Raman band at around 936 cm(-1) is attributed to hydroxyl deformation modes. Intense Raman band at 653 cm(-1) is assigned to OSiO bending vibration. Intense Raman bands in the 2700-3000 cm(-1) spectral range are assigned to OH stretching vibrations of the OH units in pectolite. Infrared spectra are in harmony with the Raman spectra. Raman spectroscopy with complimentary infrared spectroscopy enables the characterisation of the silicate mineral pectolite. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：58 / 62
页数：5
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