Process study of CeO2 preparation by jet-flow pyrolysis via microwave heating Original scientific paper

Main Article Content

Lv Chao
Yin Hongxin
Liu Yanlong
Chen Xuxin
Sun Minghe
Zhao Hongliang


Spray pyrolysis method has a disadvantage of nozzle plugging and conventional heating model causes a large temperature gradient, which leads to uneven heated reactants. In this study, cerium chloride heptahydrate and Venturi reactor were used as raw material and core equipment, respectively. The technology of microwave heating was combined to prepare single-phase sphere-like cerium oxide. The mean size of the particles was near 80nm. The product was characterized via the technology of XRD, SEM and EDS. The purity, morphology and energy consumption were compared with the conventional spray pyrolysis. Fluent software coupled with HFSS was employed to simulate the effects of different process conditions on products’ purity and temperature field in the reactor. There was a good correspondence between experimental and simulated results. The results showed that as gas velocity Vg increased, the tendency of the temperature field distribution did not change. The lowest mass fraction of chlorine element reached 0.13% when the gas inlet velocity reached 1.7 m/s. When the material inlet velocity was 0.05 m/s, the mass fraction of chlorine element was below 0.1%, which indicated that the reactants had a complete reaction. It has been calculated that the heating cost, energy consumption and CO2 emission were decreased sharply, which compared with spray pyrolysis method.

Article Details

How to Cite
Chao, L., Hongxin, Y., Yanlong, L., Xuxin, C. ., Minghe, S., & Hongliang, Z. . (2022). Process study of CeO2 preparation by jet-flow pyrolysis via microwave heating: Original scientific paper. Chemical Industry & Chemical Engineering Quarterly.


K.B. Kusuma, M. Manju, C.R. Ravikumar, N. Raghavendra, M.A. Shilpa Amulya, H.P. Nagaswarupa, H.C. Ananda Murthy, M.R. Anil Kumar, T.R. Shashi Shekhar, Appl. Surf. Sci. Adv. 11 (2022) 100304.

P. Janos, J. Ederer, V. Pilarova, J. Henych, J. Tolasz, D. Milde, T. Opletal, Wear 362-363 (2016) 114-120.

S.J. Liang, X. Jiao, X.H. Tan, J.Q. Zhu, Appl. Opt. 57 (2018) 5657-5665.

F. Wei, C.J. Neal, T.S. Sakthivel, Y.F. Yu, M. Omer, A. Adhikary, S. Ward, K.M. Ta, Bioact. Mater. 21 (2023) 547-565.

M. Ramachandran, M. Shanthi, R. Subadevi, M. Sivakumar, Vacuum 161 (2019) 220-224.

S. Gnanam, V. Rajendran, J. Alloys Compd. 735 (2018) 1854-1862.

C. Lv, Q.Y. Zhao, Z.M. Zhang, Z.H. Dou, T.A. Zhang, H.L. Zhao, Trans. Nonferrous Met. Soc. China 25 (2015) 997-1003.

A.Z. Fia, J. Amorim, Energy 218 (2021) 119472.

J. Liu, J.H. Liu, B.W. Wu, S.B. Shen, G.H. Yuan, L.Z. Peng, Chin. J. Eng. 39 (2017) 208-214.

E. Meloni, M. Martino, M. Pierro, P. Pullumbi, F. Brandani, V. Palma, Energies 15 (2022) 4119.

V. Palam, D. Barba, M. Cortese, M. Martino, S. Renda, E. Meloni, Catalysts 10 (2020) 246.

E. Meloni, M. Martino, V. Palma, Renewable Energy 197 (2022) 893-931.

J.Y. Zhu, L.P. Yi, Z.Z. Yang, M. Duan, Chem. Eng. J. 407 (2021) 127197.

D. Salvi, D. Boldor, G.M. Aita, C.M. Sabliov, J. Food Eng. 104 (2011) 422429.

C.D. Si, J.J. Wu, Y.X. Zhang, G.J. Liu, Q.J. Guo, Fuel 242 (2019) 159-149.

D.L. Ye. Practical Inorganic Thermodynamics Data Manual; Cao, S.L., Ed.; Metallurgical Industry Press: Beijing, China, 1981; pp. 262–263, 265–266.

X.H. Liu, Northeastern University, Study on the cerium oxide prepared by pyrolysis of cerium chloride solution, Master’s thesis (2011).