Study on thermodynamics and kinetics for the reaction of aluminum hydride and water by microcalorimetry

Autor:	Li Bai Xiao, Er Gang Yao, Hong Xu Gao, Rong Zu Hu, Jian Hua Yi, Hai Xia Hao, Feng-Qi Zhao, Yang Luo, Na Li
Rok vydání:	2015
Předmět:	Exothermic reaction Isothermal microcalorimetry Order of reaction Chemistry Kinetics Physical chemistry Thermodynamics Activation energy Physical and Theoretical Chemistry Atmospheric temperature range Condensed Matter Physics Heat capacity Standard enthalpy of formation
Zdroj:	Journal of Thermal Analysis and Calorimetry. 120:1847-1851
ISSN:	1588-2926 1388-6150
DOI:	10.1007/s10973-015-4493-4
Popis:	An exothermic reaction between aluminum hydride (AlH3) and water was observed in our laboratory. The reaction process of AlH3 and water was studied using a microcalorimeter. The results show that the reaction enthalpies of AlH3 with water and the enthalpies of formation of AlH3 at T = (313.15, 318.15, 323.15, 328.15) K are (−405.10, −405.56, −406.02 and −406.48) kJ mol−1, and (−10.81, −10.59, −10.36, −10.13) kJ mol−1, respectively. The standard enthalpy of formation and standard molar heat capacity of AlH3 obtained by an extrapolation method are −11.49 kJ mol−1 and 45.22 J mol−1 K−1, respectively. The values of activation energy E, pre-exponential factor A and the reaction order n for the reaction of AlH3 and water over the temperature range from 313.15 to 328.15 K are 69.41 kJ mol−1, 108.46 s−1 and about 1.033, respectively.
Databáze:	OpenAIRE
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