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Thermal Stability and Kinetics of Thermal Decomposition of Salvianolic Acid B

  • WANG Shao-Xu ,
  • TAN Zhi-Cheng ,
  • CHE Ru-Xin ,
  • LI Yan-Sheng
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  • a College of Environmental Science & Engineering, Dalian Jiaotong University, Dalian 116028;
    b China Ionic Liquid Laboratory and Thermochemistry Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023

Received date: 2011-04-07

  Revised date: 2011-09-28

  Online published: 2012-02-25

Supported by

Project supported by the National Natural Science Foundation of China (Nos.20903017, 21073189);Dalian Science and Technology Foundation (No. 2010J21DW010) and China Postdoctoral Science Foundation (No.20080431141).

Abstract

The processes of thermal decomposition of salvianolic acid B were studied by TG-DTG. The TG-DTG curves showed that the process of mass loss of the substance proceeded in two steps. The first step could be attributed to the expulsion of water in the temperature range of 305~373 K. The second step was corresponding to the large scale degradation of salvianolic acid B in the temperature range of 413~864 K.The activation energies E of thermal degradation process of three stages were obtained by Friedman method and Ozawa-Flynn-Wall method. According to 15 mechanism functions, the possible kinetic model of thermal degradation process was estimated to be Fn-F2-F1 through the multiple linear regression method.

Cite this article

WANG Shao-Xu , TAN Zhi-Cheng , CHE Ru-Xin , LI Yan-Sheng . Thermal Stability and Kinetics of Thermal Decomposition of Salvianolic Acid B[J]. Acta Chimica Sinica, 2012 , 70(02) : 212 -216 . DOI: 10.6023/A1104075

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