期刊
CENTRAL EUROPEAN JOURNAL OF CHEMISTRY
卷 12, 期 12, 页码 1294-1303出版社
SCIENDO
DOI: 10.2478/s11532-014-0577-4
关键词
Pyrolysis; Biomass; Inorganic salts; Kinetics
资金
- project of the Presidium of RAS [12-P-3-1036]
The purpose of this work was to study the kinetics of wood pyrolysis in the presence of inorganic salts, representatives of classes of alkali and alkaline earth metal halides (NaCl, KCl, KBr, CaCl2, BaCl2 center dot 2H(2)O) and Lewis acids (AlCl3 center dot 6H(2)O, FeCl3 center dot 6H(2)O, CuCl2, CuBr2, ZnCl2 center dot 1.5H(2)O, NiCl2 center dot 6H(2)O, SnCl2 center dot 2H(2)O) using TG-DSC. The activity of these catalysts was estimated by the temperature of the beginning of pyrolysis, charcoal yield and kinetic parameters, such as energy of activation and reaction order. Using the Lewis acids as catalysts for pyrolysis leads to a decrease in the temperature of the process beginning and the activation energy. In the presence of other catalysts activation energy does not significantly change. The increase of a seeming reaction order in the presence of Lewis acids possibly is a consequence of complication of the thermodestruction mechanism, with the appearance of new parallel competing stages.
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