单斜仲钨酸铵热分解的热化学测定

doi:10.3866/PKU.WHXB20001116

Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (11): 1048-1052.doi: 10.3866/PKU.WHXB20001116

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Thermal Decomposition of Monoclinic Ammonium Paratungstate

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

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

Abstract

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

Liu Shi-Jun, Chen Qi-Yuan, Zhang Ping-Min. Thermal Decomposition of Monoclinic Ammonium Paratungstate[J].Acta Phys. -Chim. Sin., 2000, 16(11): 1048-1052.

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Thermal Decomposition of Monoclinic Ammonium Paratungstate

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