引用本文:
任宜霞, 陈沛, 陈三平, 杨旭武, 高胜利. Zn(Met)Ac2·H2O固态配合物的制备及标准生成焓[J]. 应用化学,
2004, 21(6): 585-588.
Citation: REN Yi-Xia, CHEN Pei, CHEN San-Ping, YANG Xu-Wu, GAO Sheng-Li. Preparation and Standard Enthalpy of Formation of Zn(Met)Ac2·H2O[J]. Chinese Journal of Applied Chemistry, 2004, 21(6): 585-588.
Citation: REN Yi-Xia, CHEN Pei, CHEN San-Ping, YANG Xu-Wu, GAO Sheng-Li. Preparation and Standard Enthalpy of Formation of Zn(Met)Ac2·H2O[J]. Chinese Journal of Applied Chemistry, 2004, 21(6): 585-588.
Zn(Met)Ac2·H2O固态配合物的制备及标准生成焓
摘要:
在水丙酮混合溶剂中合成了Zn(Met)Ac2·H2O固态配合物,通过化学分析、元素分析、IR、DSC和TG-DTG对其组成、结构及热稳定性进行了表征。得出其脱水过程和分解过程的焓变分别为15.30J/g和357.80J/g。用转动弹热量计测得其恒容燃烧能ΔcE为(-6472.11±2.20)kJ/mol,计算得其标准燃烧焓ΔcHmθ和标准生成焓ΔfHmθ分别为(-6475.21±2.20)kJ/mol和(-429.04±2.59)kJ/mol。
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关键词:
- 水合醋酸锌
- / L-α-蛋氨酸配合物
- / 制备
- / 生成焓
English
Preparation and Standard Enthalpy of Formation of Zn(Met)Ac2·H2O
Abstract:
The complex of methionine with Zn(Met)Ac2·H2O was prepared in a water-acetone mixture. Its composition was identified as Zn(Met)Ac2·H2O by chemical and elemental analyses. The structure and thermal stability of the complex were investigated by IR, DSC and TG-DTG, its enthalpies in dehydrolysis and decomposition courses were obtained as 15.30 J/g and 357.80 J/g, respectively. The constant volume combustion energy of the complex, ΔcE, was determined as (-6 472.11±2.20) kJ/mol by a precise rotating-bomb calorimeter at 298.15 K, its standard enthalpy of combustion, ΔcHmθ, and standard enthalpy of formation, ΔfHmθ, were calculated as (-6 475.21±2.20) kJ/mol and (-429.04±2.59) kJ/mol, respectively.
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Key words:
- methionine
- / zinc acetate
- / complex
- / preparation
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