| 三甲氧苄二氨嘧啶的热解动力学研究 |
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| 引用本文： | 郝小松,刘红仓,王琳,郭根有.三甲氧苄二氨嘧啶的热解动力学研究[J].南阳师范学院学报,2013,12(6):18-20,74. |
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| 作者姓名： | 郝小松 刘红仓 王琳 郭根有 |
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| 作者单位： | 1. 蒲城清洁能源化工有限责任公司,陕西渭南,715500
2. 南阳师范学院化学与制药工程学院,河南南阳,473061 |
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| 摘 要： | 采用热重法(TG)和微分热重法(DTG)对合成的磺胺增效剂三甲氧苄二氨嘧啶(TMP)进行了热稳定性研究.研究结果表明:在25℃～700℃范围内有一次失重过程.运用Kissinger和Ozawa等方法计算了其活化能,并运用Satava-Sestak积分方程得到了TMP的热解动力学参数,其中热分解积分函数采用-ln(1-a)]1/n的形式.求得的热解反应活化能Ea=70.2276 kJ/mol,反应级数n=2.02298.得到的热解动力学方程为:dα/dt=3.3576×106exp(-7.0228×104/RT)(1-α)-ln(1-α)]0.4967
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| 关 键 词： | 磺胺增效剂 三甲氧苄二氨嘧啶 热动力学 热重法 |
Study on thermal decomposition kinetics of trimethoxybenzyl diaminepyrimidine |
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| HAO Xiao-song
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LIU Hong-cang
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WANG Lin
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GUO Gen-you.Study on thermal decomposition kinetics of trimethoxybenzyl diaminepyrimidine[J].Journal of Nanyang Teachers College,2013,12(6):18-20,74. |
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| Authors: | HAO Xiao-song LIU Hong-cang WANG Lin GUO Gen-you |
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| Institution: | 1. Pucheng Clean Energy Chemical Co. ,LTD, Weinan 715500, China ; 2. School of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang 473061, China) |
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| Abstract: | Thermal stability of trimethoxybenzyl diaminepyrimidine is studied by thermogravimetry （TG） and dif-ferential thermogravimetry （DTG）. One weight-loss phase is observed in the heating courses from room tempera-ture to 700 ℃ in the inert atmosphere. Using Kissinger and Ozawa methods, the activation energy of thermal de-composition is obtained as 70. 2276 kJ/mol. Satava-Sestak integral equation is employed to determine the most probable kinetic equation and values of kinetic parameters,in which kinetic function is - ln （ 1 - α） ] 1/n. The reaction order of 2. 02298 is obtained and the kinetic equation of thermal decomposition can be expressed as da/ dt =3.3576 × 10^6 exp（ -7.0228 × 10^4/RT） （1 -a） - In（1 -α） ]^0.4967. |
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| Keywords: | sulfonamide potentiator trimethoxybenzyl diaminepyrimidine thermal analysis thermogravimetry |
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