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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/44334

    Title: Applying the E2-Function to Determine the Pyrolysis Kinetics of calcium Oxalate
    Other Titles: 應用E2特殊函數求取草酸鈣之熱裂動力學參數
    Authors: Chen, Hsi-jen;Lai, K. M.;Lin, Y. C.
    Contributors: 淡江大學化學工程與材料工程學系
    Keywords: pyrolysis kinetics;thermogravimetric analysis (TGA);arrhenius equation;E-2-function
    Date: 2003/03/01
    Issue Date: 2010-03-09 10:13:00 (UTC+8)
    Publisher: 台灣化學工程學會
    Abstract: A new method, which uses exact formula involving the E2-function, is proposed for the determination of the kinetic parameters of calcium oxalate from non-isothermal thermogravimetric analysis (TGA) data. There are three consecutive pyrolyzed stages in the decomposition of calcium oxalate. In the first stage of the reaction (splitting water), we obtained the possible domain of reaction orders ranging from 0.7 to 0.9. It was observed that the kinetic reaction model best fit a 0.7-order reaction model, and the activation energy was found to be 77.1-119.0 kJ/mole. In the second stage of the reaction (splitting carbon monoxide), among reaction orders ranging from 0.35 to 0.5, the best fit was an order of 0.5, and the activation energy was found to be 203.5-218.9 kJ/mole. In the third stage of the reaction (splitting carbon dioxide), among reaction orders ranging from 0.45 to 0.6, the best fit was an order of 0.45, and the activation energy was found to be 167.6-199.8 kJ/mole. The results were somewhat lower than the data obtained in similar studies reported in the literature. We believe that the proposed methodology has the merits of both accuracy in calculation and simplicity in formulation.
    Relation: Journal of the Chinese institute of chemical engineers=中國化學工程學會會誌 34(2), pp.247-254
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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