Wang Tanglin, Sun Zhaohui, Xian Yong, Yin Danfeng, Li Qianwen. Mechanism Research on the Thermal Decomposition of NH4VO3[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(5): 6-10. doi: 10.7513/j.issn.1004-7638.2015.05.002
Citation:
Wang Tanglin, Sun Zhaohui, Xian Yong, Yin Danfeng, Li Qianwen. Mechanism Research on the Thermal Decomposition of NH4VO3[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(5): 6-10. doi: 10.7513/j.issn.1004-7638.2015.05.002
Wang Tanglin, Sun Zhaohui, Xian Yong, Yin Danfeng, Li Qianwen. Mechanism Research on the Thermal Decomposition of NH4VO3[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(5): 6-10. doi: 10.7513/j.issn.1004-7638.2015.05.002
Citation:
Wang Tanglin, Sun Zhaohui, Xian Yong, Yin Danfeng, Li Qianwen. Mechanism Research on the Thermal Decomposition of NH4VO3[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(5): 6-10. doi: 10.7513/j.issn.1004-7638.2015.05.002
1. Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China;
2. Pangang Group Panzhihua Steel and Vanadium Co., Ltd., Panzhihua 617062, Sichuan, China
The mechanism of the thermal decomposition of NH4VO3 was investigated by TG-DSC in this paper. The analysis results indicate that the decomposition process experiences four steps including the initial three endothermic reactions and a last exothermic reaction. The kinetic parameters of the formation of V2O5 were calculated by Kissinger and Kissinger-Crane methods,and the corresponding rate equation was established. The results show that the third chemical reaction is the limiting link during the decomposition of NH4VO3,and the activation energy of the reaction is 156.60 kJ/mol,the frequency factor is 2.43 × 1014min-1 and the reaction order is 0.94.
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