| 葛粉的非等温动力学研究 |
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| 引用本文： | 周日辉,项少云,李金江,陈朴青.葛粉的非等温动力学研究[J].广州化工,2012,40(18):74-76. |
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| 作者姓名： | 周日辉 项少云 李金江 陈朴青 |
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| 作者单位： | 1. 江西师范大学理化测试中心,江西南昌,330022
2. 江西省广丰五都中学,江西上饶,334600 |
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| 摘 要： | 利用TG/DTA技术,考察不同升温速率下葛粉的热分解特性,研究葛粉热分解动力学,运用Kissinger法、Coats-Redfern法和Achar法对非等温动力学数据进行了分析。研究结果表明：在氮气气氛下,葛粉在280℃左右开始分解,至400℃以上基本分解完毕,反应机理函数的积分形式和微分形式分别为：G（α）=（1-α）-1/3-1]2和f（α）=3/2（1-α）4/3（1-α）-1/3-1]-1,对应的机理为三维扩散模型。
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| 关 键 词： | 葛粉 热重差热分析 非等温动力学 Coats-Redfern Achar |
Non- isothermol Kinetics Analysis of Kudzu Starch |
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| ZHOU Ri-hui,XIANG Shao-yun,LI Jin-jiang,CHEN Pu-qing.Non- isothermol Kinetics Analysis of Kudzu Starch[J].GuangZhou Chemical Industry and Technology,2012,40(18):74-76. |
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| Authors: | ZHOU Ri-hui XIANG Shao-yun LI Jin-jiang CHEN Pu-qing |
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| Affiliation: | ZHOU Ri - hui, XIANG Shao - yun , LI Jin -jiang , CHEN Pu - qing(1 Analytical and Testing Center, Jiangxi Normal University, Jiangxi Nanchang 330022; 2 Guangfeng Wudu Middle School, Jiangxi Shangrao 334600, China) |
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| Abstract: | Kinetics and thermal decomposition behavior of kudzu starch were investigated using TG/DTA technique at various heating rates. The non - isothermal kinetic data were analyzed with Kissinger method, Coats - Redfern method and Aehar method. The results showed that the decomposition of kudzu starch was initiate at 280℃ and complete entirely above 400℃ in nitrogen atmosphere. The integral and differential mechanism function were G （a） = （ 1 - α） - 1/3- 1] 2 and f（α） = 3/2 （ 1 - α） 4/3 （ 1 - a） - 1/3-1 ] - 1, respectively. The mechanism was three - dimensional diffusion model. |
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| Keywords: | kudzu starch TG/DTA non - isothermol kinetics Coats - Redfern Achar |
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