期刊
BIORESOURCE TECHNOLOGY
卷 278, 期 -, 页码 287-295出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2019.01.102
关键词
Pyrolysis; TG-FTIR; Biomass chemical composition; Kinetics; Thermodynamics
资金
- National Natural Science Foundation of China [21576294, 21706287]
- Qingdao Science and Technology Bureau [18-6-1-101-nsh, 16-6-2-51-nsh]
- Independent Innovation Research Project of China University of Petroleum [18CX05022A]
- Major Science and Technology Innovation Project of Shandong Province [2018CXGC0301]
The aim of this work was to study the pyrolysis behavior of castor oil, corn starch, soy protein, lignin, xylan, and cellulose. The pyrolysis behavior, gaseous product evolution, kinetics and thermodynamics of these model compounds were investigated via TG-FTIR under high heating rates. The TG/DTG curves showed that castor oil had the widest pyrolysis temperature zone and lignin had the highest residual rate. The apparent activation energy of these model compounds was calculated by Kissinger-Akahira-Sunose method. The kinetic results revealed that the average bond energy of chemical compositions was in the order of lipid > lignin > starch > cellulose > protein > hemicellulose. The pre-exponential factor analysis showed that there were a large number of surface reactions for soy protein and xylan during pyrolysis, however other model compounds were not surface controlled. The thermodynamic parameters including G, Delta S, Delta H for six model compounds were also calculated.
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