Fourier transform infrared spectroscopy analysis for hydrothermal transformation of microcrystalline cellulose on montmorillonite

Wu, Lin Mei and Tong, Dong Shen and Zhao, Li Zhi and Yu, Wei Hua and Zhou, Chun Hui and Wang, Hao (2014) Fourier transform infrared spectroscopy analysis for hydrothermal transformation of microcrystalline cellulose on montmorillonite. Applied Clay Science, 95. pp. 74-82. ISSN 0169-1317

Abstract

Specifying the interactions between montmorillonite and cellulose is helpful for understanding the evolution of biomass in soil and the geological formation of fossil fuels in nature. In this work, Fourier transform infrared spectroscopy was used to investigate the hydrothermal transformation of microcrystalline cellulose on montmorillonite. A series of samples were obtained from hydrothermal treatments of microcrystalline cellulose with montmorillonite in various ratios at 200°C for 16h. The resulting solid samples were analyzed by using Fourier transform infrared (FTIR) spectroscopy. The subtle changes before and after hydrothermal treatments were particularly studied by using mathematical methods to generate second derivatives of absorbance spectra. It was found that there were interactions between montmorillonite and microcrystalline cellulose during the hydrothermal process. In the presence of montmorillonite, the cellulose was transformed to yield a product with aliphatic CHx and aromatic groups. These were further confirmed by the FTIR spectra of the samples which were further treated by using an HCl/HF acid solution to remove the montmorillonite in them (demineralization). The structural parameters ('A Factor', 'C Factor' and CH3/CH2 ratio) were calculated. The values of the 'A Factor' and CH3/CH2 ratio of the resulting solid samples increased with the increase of montmorillonite. The values of 'C Factor' were little affected by the montmorillonite minerals. The findings suggested that montmorillonite-assisted hydrothermal treatment of cellulose was able to produce kerogen analogs.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2014 Elsevier B.V. Permanent restricted access to published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 09 Jul 2014 04:02
Last Modified: 08 Mar 2017 05:22
Uncontrolled Keywords: clay minerals; curve-fitting analysis; Fourier transform infrared spectroscopy; microcrystalline cellulose; montmorillonite
Fields of Research : 03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030606 Structural Chemistry and Spectroscopy
01 Mathematical Sciences > 0101 Pure Mathematics > 010106 Lie Groups, Harmonic and Fourier Analysis
10 Technology > 1003 Industrial Biotechnology > 100302 Bioprocessing, Bioproduction and Bioproducts
Socio-Economic Objective: B Economic Development > 85 Energy > 8503 Preparation and Production of Energy Sources > 850309 Production of Biofuels (Biomass)
Identification Number or DOI: 10.1016/j.clay.2014.03.014
URI: http://eprints.usq.edu.au/id/eprint/25450

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