Geopolymers
Inorganic polymeric new materials
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Guiying Xu
Guiying Xu
Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
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Baizeng Fang
Baizeng Fang
Chemical and Biological Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
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Guogang Sun
Guogang Sun
Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
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Abstract
Thermal characteristics of wheat distiller grains (WDGs) and steam gasification kinetics of the corresponding pyrolysis char were studied by thermogravimetric analysis. The pyrolysis process of WDGs can be divided into three stages including the drying, devolatilization, and carbonation. The heating rate and final temperature are the most important factors influencing the WDGs decomposition. The ultimate mass loss increases with increasing final temperature while the mass loss rate and the characteristic temperature for the maximum reaction rate increase with the increasing heating rate. For the pyrolysis of WDGs, the average activation energy was calculated as 77.45 kJ mol−1 by Coats–Refern method. While for the steam gasification of the pyrolysis char, the shrinking-core model fits the gasification behavior better than the volumetric reaction one and the activation energy, and the pre-exponential factor were calculated to be 199.19 kJ mol−1 and 7.21 × 106 s−1, respectively, with the former model.
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| Journal of Thermal Analysis and Calorimetry | |
|---|---|
| Language | English |
| Size | A4 |
| Year of Foundation |
1969 |
| Volumes per Year |
1 |
| Issues per Year |
24 |
| Founder | Akadémiai Kiadó |
| Founder's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. |
| Publisher | Akadémiai Kiadó Springer Nature Switzerland AG |
| Publisher's Address |
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11. |
| Responsible Publisher |
Chief Executive Officer, Akadémiai Kiadó |
| ISSN | 1388-6150 (Print) |
| ISSN | 1588-2926 (Online) |
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Temperature dependence of the rate of reaction in thermal analysis
The Arrhenius equation in condensed phase kinetics
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