Reaction Mechanism Study on Combustion of Micro Nanometer Iron Powder

Abstract:

Thermogravimetric curves of micro nanometer iron powder’s combustion were studied in different heating rates that were 10K/min, 20 K/min, 30 K/min and 40 K/min, and the particle sizes of iron were 100nm and 20μm. The iron’s kinetic parameters of combustion reaction were calculated by Coats-Redfern integral, differential and Kissinger methods, then the kinetic model was determined and the most probable mechanism function was verified by Popescu method. The results show that different heating rates, particle sizes and calculations can affect kinetic parameters and reaction mechanism. The activation energy of 100nm and 20μm iron powder’s combustion is 122.48 KJ/mol and 161.64 KJ/mol respectively. The combustion reaction of micro nanometer iron powder is controlled by random nucleation and subsequent growth model which is in agreement with Avrami-Erofeev equation. Rational control for the temperature and reaction time are conducive to optimize the combustion reaction of micro nanometer iron powder.

• Periodical: Advanced Materials Research (Volumes 535-537)
• Pages: 459-464
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.535-537.459
• Online since: June 2012
• Authors: Chuan Mei Zhang, Jing Jin, Dan Dan He, Hao Zhang, Jie Jiang, Xin Yong Gao, Wen Jing Gao
• Keywords: Activation Energy, Combustion, Micro Nanometer Iron Powder, Reaction Mechanism, Thermogravimetric Curve

References

[1] H Jin, M. A Ishida, Int.J of Hydrogen Energy. Commun. 25(2000) 1209-1215.

[2] M Ishida, H. A Jin, Ind,Eng. Chem.Res. Commun. 35(1996)2469-2472.

[3] Hongmin Wang, Guangzhou Chemical Industry. Commun. 37(2009)55-57.

[4] A P Ilyin, A A Gromov, G V Yablunovskii, Explosion and Shock Waves. Commun. 2010.

[5] Y S Know, A A Gromov, V I Vereshchagin, Combustion and Flame. Commun. 2003.

[6] Hongzhen Duan, Nanjing, Nanjing University of Science and Technology, 2008.

[7] Linlin Jiang, Wuhan, Huazhong University of Science and Technology, 2009.

[8] Li Yang, Yanqun Zhu, Zhihua Wang et al, Journal of Zhejiang University. Commun. 2010.

[9] Lei Chen, Shanghai, University of Shanghai for Science and Technology, 2010.

[10] H E Brown, London, Chapman & Hall Ltd. (1988)127.

[11] T P Prasad, S B Kanungo, H S Ray, Thermochimica Acta. Commun. 203(1992)503-514.

[12] Rongzu Hu, second ed., Science Press, Beijing, 2008.

[13] Zhengrong Lu, Li.Yang, Thermochimica Acta. Commun. 188(1991) 135-142.

[14] Kecong Zhang, Lehui Zhang, Crystal Growth, Beijing, Science Press,1981.

[15] Yuran Luo, Bull Chem. Commun. 4(1981) 50-55.

[16] Jian Liu, Fengjie Zhao, Safety In Coal Mines. Commun. 37(2006)4-6.

[17] Dongsheng Wen, Pengxiang Song, Kai Zhang et al, J Chem Technol Biotechnol. 2011.