298.15 K时斯蒂芬酸钾盐和铯盐在水和DMF中的溶解热

引用本文: 刘影, 佟文超, 杨利, 张同来, 冯长根. 298.15 K时斯蒂芬酸钾盐和铯盐在水和DMF中的溶解热[J]. 物理化学学报, 2013, 29(03): 467-472. doi: 10.3866/PKU.WHXB201212202 shu

Citation: LIU Ying, TONG Wen-Chao, YANG Li, ZHANG Tong-Lai, FENG Chang-Gen. Solution Heat of Potassium Styphnate and Caesium Styphnate in Water and DMF at 298.15 K[J]. Acta Physico-Chimica Sinica, 2013, 29(03): 467-472. doi: 10.3866/PKU.WHXB201212202 shu

298.15 K时斯蒂芬酸钾盐和铯盐在水和DMF中的溶解热

基金项目:
应用物理化学实验室科技基金(9140C3703051105, 9140C370303120C37142)与爆炸科学与技术国家重点实验室基金(QNKT12-02, YBKT10-05)资助项目 (9140C3703051105, 9140C370303120C37142)与爆炸科学与技术国家重点实验室基金(QNKT12-02, YBKT10-05)

摘要:

在298.15 K时, 采用微热量热仪测定斯蒂芬酸钾盐[K₂(TNR)(H₂O)]_n和斯蒂芬酸铯盐[Cs₂(TNR)(H₂O)₂]_n两种含能配合物在水和N,N-二甲基甲酰胺(DMF)溶剂中的溶解热, 研究其溶解过程和溶解热化学性质. 结果表明, 两种配合物溶解于水是吸热过程, 而溶解于DMF则为放热过程, 这主要是由于溶质和溶剂的分子结构及其极性不同而导致的. 通过对实验数据计算拟合, 求得这两种配合物的溶解焓(Δ_solH)、相对表观摩尔焓(ФL_i)、相对偏摩尔焓(L_i)及稀释焓(Δ_dilH_1,2)的经验公式和标准溶解焓值(Δ_solH_m^θ).

关键词:

English

Solution Heat of Potassium Styphnate and Caesium Styphnate in Water and DMF at 298.15 K

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, P. R. China
Received Date: 16 November 2012
Available Online: 25 February 2013
Fund Project:
应用物理化学实验室科技基金(9140C3703051105, 9140C370303120C37142)与爆炸科学与技术国家重点实验室基金(QNKT12-02, YBKT10-05)资助项目

Abstract:

The dissolution and thermochemical properties of potassium styphnate [K₂(TNR)(H₂O)]_n and cesium styphnate [Cs₂(TNR)(H₂O)₂]_n in water and N,N-dimethylformamide (DMF) at 298.15 K were studied by calorimetry. The processes are endothermic in water, and exothermic in DMF because of the different molecular structure and polarity of the solutes and solvents. Empirical formulas for the solution enthalpies (Δ_solH), relative apparent molar solution enthalpies (ФL_i), relative partial molar enthalpies (L_i), and dilution enthalpies (Δ_dilH_1,2) are deduced by polynomial expressions, and standard solution enthalpies (Δ_solH_m^θ) are also calculated.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

298.15 K时斯蒂芬酸钾盐和铯盐在水和DMF中的溶解热

English

Solution Heat of Potassium Styphnate and Caesium Styphnate in Water and DMF at 298.15 K

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

298.15 K时斯蒂芬酸钾盐和铯盐在水和DMF中的溶解热

English

Solution Heat of Potassium Styphnate and Caesium Styphnate in Water and DMF at 298.15 K

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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