Open AccessStudy on Thermal Decomposition Behavior of Tea Saponin from Camellia Oleifera Cake
Author(s) -
Tan Dengfeng,
Jinying Pang,
Hualin Hu,
Sun Chao
Publication year - 2020
Publication title -
iop conference series materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/782/2/022049
Subject(s) - thermogravimetric analysis , camellia oleifera , degradation (telecommunications) , thermal stability , thermal decomposition , activation energy , materials science , kinetics , thermal , thermal analysis , chemistry , pyrolysis , chemical engineering , organic chemistry , thermodynamics , electronic engineering , biochemistry , physics , quantum mechanics , engineering
Different contents of tea saponin (CZS-1 and CZS-2) from Camellia oleifera Cake were prepared via ethanol extraction method, and thermal degradation temperature and thermal degradation kinetics of the CZS-1 and CZS-2 were studied by thermogravimetric analyzer method. The results indicate that the thermal degradation of CZS-2 involves three steps, the thermal degradation of CZS-1 involve four steps. The thermal decomposing temperature 430°C, the relationship was just opposite. With the heating rate increasing, thermal decomposing temperature of CZS-1 and CZS-2 were increased gradually. The thermal degradation kinetics of CZS-1 and CZS-2 were studied by Kissinger’s method. It was found that thermal degradation activation energy of CZS-1 and CZS-2 were 43.6 kJ/mol and 30.7 kJ/mol at the first and second steps, respectively.
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