物理化学学报 >> 2000, Vol. 16 >> Issue (11): 1048-1052.doi: 10.3866/PKU.WHXB20001116

研究简报 上一篇    下一篇

单斜仲钨酸铵热分解的热化学测定

刘士军, 陈启元, 张平民   

  1. 湘潭大学化学系,湘潭 411105|中南工业大学化学化工学院,长沙 410083
  • 收稿日期:2000-01-27 修回日期:2000-05-15 发布日期:2000-11-15
  • 通讯作者: 张平民 E-mail:s-whs@mail.csut.edu.cn

Thermal Decomposition of Monoclinic Ammonium Paratungstate

Liu Shi-Jun, Chen Qi-Yuan, Zhang Ping-Min   

  1. Department of Chemistry,Xiangtan University,Xiangtan 411105|College of Chemistry Chemical Engineering,Central South University of Technology,Changsha 410083
  • Received:2000-01-27 Revised:2000-05-15 Published:2000-11-15
  • Contact: Zhang Ping-Min E-mail:s-whs@mail.csut.edu.cn

关键词: 单斜仲钨酸铵, 热分解, 量热法

Abstract:

The heat of the thermal decomposition of monoclini c ammonium paratungstate, (NH4)10H2W12O42•4H2O, was measured in a HT-1000 microcalorimeter using three-step calorimetry and suitable thermochemical cycle. The standard enthalpy of the thermal decomposition reaction at 298.15 K and the standard enthalpy of formation at 298.15 K for monoclinic ammonium paratung-state were obtained to be (430.1± 10.2) kJ•mol- 1 and- (13 423.7±14.8) kJ•mol- 1, respectively.

Key words: Monoclinic ammonium paratungstate, Thermal decomposition, Calorimetry