Nonisothermal kinetics of solid-solid phase transitions in C<sub>12</sub>Mn,C<sub>14</sub>Mn and their binary system

WU Kezhong; LI Jianling; WANG Xindong; LIU Xiaodi

doi:10.13374/j.issn1001-053x.2007.09.036

Volume 29 Issue 9

Aug. 2021

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WU Kezhong, LI Jianling, WANG Xindong, LIU Xiaodi. Nonisothermal kinetics of solid-solid phase transitions in C12Mn,C14Mn and their binary system[J]. Chinese Journal of Engineering, 2007, 29(9): 928-931. doi: 10.13374/j.issn1001-053x.2007.09.036

Citation:

WU Kezhong, LI Jianling, WANG Xindong, LIU Xiaodi. Nonisothermal kinetics of solid-solid phase transitions in C₁₂Mn,C₁₄Mn and their binary system[J]. Chinese Journal of Engineering, 2007, 29(9): 928-931. doi: 10.13374/j.issn1001-053x.2007.09.036

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Nonisothermal kinetics of solid-solid phase transitions in C₁₂Mn,C₁₄Mn and their binary system

doi: 10.13374/j.issn1001-053x.2007.09.036

1. Department of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050016, China;
2. Metallurgical and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2006-03-05
Rev Recd Date: 2006-10-15

Available Online: 2021-08-16

Abstract

Abstract

Thermotropic phase transitions in the perovskite-type layer compounds n-(C₁₂H₂₅NH₃)₂MnCl₄ and n-(C₁₄H₂₉NH₃)₂MnCl₄ were synthesized and a series of their mixtures were prepared from ethanol solution. The nonisothermal kinetics of solid-solid phase transitions in C₁₂Mn, C₁₄Mn and their binary system was investigated by DSC. Kissinger and Ozawa methods were applied to determine the activation energy and reaction order of the solid-solid transitions, and the results of two methods are coincident. The value of activation energy Ea showed fluctuant with increasing X_C₁₂Mn. The reaction order of C_nZn and their binary system is about 1.
- storage heat Materials,
- dodecylammonium tetrachloromanganate,
- tetradecylammonium tetrachloromanganate,
- solid-solid phase transition,
- activation energy,