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水蒸汽对碳酸锰热分解反应的影响
引用本文:姚震江,沈兴,黄镭.水蒸汽对碳酸锰热分解反应的影响[J].北京科技大学学报,1988(1).
作者姓名:姚震江  沈兴  黄镭
作者单位:北京钢铁学院无机化学教研室 (姚震江,沈兴),北京钢铁学院无机化学教研室(黄镭)
摘    要:用热重及差热分析法研究了在空气流和氢气流中及有无水蒸汽存在的四种情况下碳酸锰热分解的历程,分别求出了不同情况反应的动力学方程和表观活化能。说明了水蒸汽的作用主要在于催化碳酸锰分解为氧化亚锰的过程。

关 键 词:碳酸锰  热分解  热分析  非等温动力学  催化作用

Effect of Water Vapour on the Thermal Decomposition of Manganese Carbonate
Yao Zhenjiang Shen Xing Huang Lei.Effect of Water Vapour on the Thermal Decomposition of Manganese Carbonate[J].Journal of University of Science and Technology Beijing,1988(1).
Authors:Yao Zhenjiang Shen Xing Huang Lei
Institution:Yao Zhenjiang Shen Xing Huang Lei
Abstract:The effect of water vapour on the thermal decomposition of manganese carbonate was studied with the help of DTA and TG in different atmospheres. The kinetic equations and apparent activation energy for the decomposition reactions of manganese carbonate in dry/wet air and dry/wet 1hydrogen were deduced by the method of non-isothermal kinetics. It has been found that all these processes were diffusion controlled;the apparent activation energy were 173.7, 154.9 and 211.9, 173.7kJ.mol-1 respective-y.According to the experimental results, it believed that the role of water vapour is principally to catalyse the decomposition reaction of manganese carbonate to manganous oxide and carbon dioxide.
Keywords:manganese carbonate  thermal decomposition  thermal analysis  non-isothermal kinetics  catalysis
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