Infrared spectroscopic study of halloysite-potassium acetate intercalation complex

被引：46

作者：

Cheng, Hongfei ^{[1
,2
,3
]}

Liu, Qinfu ^{[3
]}

Yang, Jing ^{[1
]}

Zhang, Jinshan ^{[2
]}

Frost, Ray L. ^{[1
]}

Du, Xiaoman ^{[1
,2
,3
]}

机构：

[1] Queensland Univ Technol, Chem Discipline, Fac Sci & Technol, Brisbane, Qld 4001, Australia

[2] Inner Mongolia Univ Sci & Technol, Sch Min Engn, Baotou 014010, Peoples R China

[3] China Univ Min & Technol, Sch Geosci & Surveying Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2011年 / 990卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Halloysite; Potassium acetate; Intercalation complex; Near-infrared spectroscopy; Mid-infrared spectroscopy; KAOLINITE; FORMAMIDE; CLAY;

D O I：

10.1016/j.molstruc.2011.01.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mid-infrared (MIR) and near-infrared (NIR) spectroscopy have been used to study the molecular structure of halloysite and potassium acetate intercalated halloysite and to determine the structural changes of halloysite through intercalation. The MIR spectra show all fundamental vibrations including the hydroxyl units, basic aluminosilicate framework and water molecules in the structure of halloysite and its intercalation complex. Comparison between halloysite and halloysite-potassium acetate intercalation complex shows almost all bands observed for halloysite are also observed for halloysite-potassium acetate intercalation complex apart from bands observed in the 1700-1300 cm(-1) region, but with differences in band intensity. However, NIR spectra, based on MIR spectra, provide sufficient evidence to analyze the structural changes of halloysite through intercalation. There are obvious differences between halloysite and halloysite-potassium acetate intercalation complex in all spectral ranges. Therefore, the reproducibility of measurement and richness of qualitative information should be simultaneously considered for proper selection of a spectroscopic method for molecular structural analysis. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：21 / 25

页数：5

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