教師資料查詢 | 類別: 期刊論文 | 教師: 陳錫仁 Chen, Hsi-jen (瀏覽個人網頁)

標題:Applying the E2-Function to Determine the Pyrolysis Kinetics of calcium Oxalate
學年
學期
出版(發表)日期2003/03/01
作品名稱Applying the E2-Function to Determine the Pyrolysis Kinetics of calcium Oxalate
作品名稱(其他語言)應用E2特殊函數求取草酸鈣之熱裂動力學參數
著者Chen, Hsi-jen; Lai, K. M.; Lin, Y. C.
單位淡江大學化學工程與材料工程學系
出版者臺北市中國化學工程學會
著錄名稱、卷期、頁數Journal of the Chinese institute of chemical engineers=中國化學工程學會會誌 34(2), pp.247-254
摘要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.;本文提出一個新的方法,即應用由正確解得到的特殊函數E2,從非恆溫熱重分析數據中,求得草酸鈣熱裂的動力學參數。草酸鈣分解有三個階段:第一階段反應分離出水,我們得到其反應冪次範圍在0.7~0.9。我們觀察其反應冪次為0.7時最符合我們的動力學模式,而活化能為77.1~119.0 kJ/mole。第二階段反應分離出一氧化碳,我們得到其反應冪次範圍在0.35~0.5。我們觀察其反應冪次為0.5時最符合我們的動力學模式,而活化能為203.5~218.9 kJ/mole。第三階段反應分離出二氧化碳,我們得到其反應冪次範圍在0.45~0.6。我們觀察其反應冪次為0.45時最符合我們的動力學模式,而活化能為167.6~199.8 kJ/mole。本研究所得之結果稍微低於文獻,我們相信此法較為精確與簡便。
關鍵字pyrolysis kinetics;thermogravimetric analysis (TGA);arrhenius equation;E-2-function
語言英文(美國)
ISSN0368-1653
期刊性質國內
收錄於SCI;EI;
產學合作
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國別中華民國
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