| β_2-SiW_(11)Co/三乙醇胺电荷转移配合物的合成和非等温反应动力学 |
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| 引用本文： | 马荣华,付金翠.β_2-SiW_(11)Co/三乙醇胺电荷转移配合物的合成和非等温反应动力学[J].化学试剂,2010,32(3). |
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| 作者姓名： | 马荣华 付金翠 |
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| 作者单位： | 齐齐哈尔大学,化学化工学院,黑龙江,齐齐哈尔,161006 |
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| 基金项目： | 黑龙江省教育厅基金资助项目，黑龙江省自然科学基金资助项目 |
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| 摘 要： | 合成了未见文献报道的Keggin结构钴取代杂多钨硅酸盐三乙醇胺电荷转移配合物β2-(C2H4OH)3NH]4H2Si W11-Co(H2O)O39].27H2O,用元素分析、IR、UV、TG-DTA、XRD等方法对其进行了表征。结果显示该化合物仍保持杂多阴离子的Keggin结构的基本特征。同时,采用TG-DTA技术研究了标题化合物在氮气气氛中的热分解机理及非等温动力学,运用atava-est偄k法,Achar-Brindley-Sharp-Wendworth微分法对配合物的非等温动力学数据进行分析,得出了第4步热分解反应的机理函数、动力学参数以及反应的活化能E和lnA。
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| 关 键 词： | 杂多钨酸盐 电荷转移 热分解 非等温动力学 三乙醇胺 |
Synthesis and non-isothermal reaction kinetics of β_2-SiW_(11)Co and triethanolamine charge-transfer complex |
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| MA Rong-hua,FU Jin-cui.Synthesis and non-isothermal reaction kinetics of β_2-SiW_(11)Co and triethanolamine charge-transfer complex[J].Chemical Reagents,2010,32(3). |
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| Authors: | MA Rong-hua FU Jin-cui |
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| Abstract: | It was first reported that a charge-transfer complex of triethanolamine cobalt substituted heteropolytungstate isomer with the Keggin structure β_2-(C_2H_4OH)_3NH]_4H_2 SiW_(11)Co(H_2O)-O_(39)]·27H_2O had been synthesized.They were characterized by means of elementary analysis,IR,UV,TG-DTA,and X-ray diffractometry.The test results indicated that the heteropoly anion still retained its Keggin structure in supermolecular compounds.The non-isothermal kinetic data were analyzed differential method.The mechanism function,the kinetic parameters,the apparent activation energy E and the pre-exponential factor lnA for the thermal decomposition in the fourth step were obtained. |
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| Keywords: | heteropolytungstates charge-transfer thermal decomposition non-isothermal reaction kinetics triethanolamine |
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