Thermal Stability and Kinetic Analysis of Xanthoceras sorbifolia Polysaccharide

Abstract:

Pyrolysis and kinetic analysis of Xanthoceras Sorbifolia polysaccharide were evaluated using the TG-DTG/DTA method. The results indicated that its mass loss occured in three-step process . The first step could be attributed to the expulsion of water of crystallization at 25 - 176 °C. The second step corresponded to the large scale degradation of X. Sorbifolia polysaccharide in the temperature range of 179 - 661 °C. The final step was slow degradation of residues. Heating rate had significant effects on the pyrolysis of X. Sorbifolia polysaccharide and nitrogen could improve its stability. A close value of activation energy E of the thermal degradation process has been obtained by FWO, KAS and Popescu methods. The possible kinetic model was estimated to be Jander 5 (g(α)=[1-(1-α)^1/3]^1/2.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 3904-3907
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.3904
• Online since: May 2012
• Authors: Quan Cheng Zhou, Hong Mei Zhang, De Mao Li
• Keywords: Kinetic, Pyrolysis, TG-DTG/DTA, Xanthoceras Sorbifolia Polysaccharide

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