Synthesis of Lanthanum Oxide Using Hydrogen Peroxide as Auxiliary Reagent by Spray Pyrolysis Method

Abstract:

With lanthanum chloride solution as raw material, and use the hydrogen peroxide of clean and pollution-freeobtained from oxidation reaction as auxiliary reagent, and with the carrier gas together form spray pyrolysis to obtain lanthanum oxide. On the one hand, in the hydrogen peroxide system, the temperature of direct pyrolysis reaction of lanthanum chloride solution decreased obviously, The reaction temperature is decreased from 1280°C to 1000°C or less. That reduce the energy consumption and simplify the requirements of pyrolysis equipment technology. The production process does not use NH₃^.H₂O and NaOH to precipitate. It does not produce the traditional process of NH⁴⁺, Na⁺ to pollute water. It can greatly reduce the damage to the environment, and can product with high yield, high purity of the rare earth oxide. This method not only applies to the pyrolysis of the rare earth chloride solution, also applies to metal chloride solution, such as FeCl₃, AlCl₃, NiCl₂. It was shown that the reaction temperature has been effectively reduced, V_LaCl3: V_H2O2 with 1: 1.5 can get high purity of La₂O₃.

• Periodical: Advanced Materials Research (Volume 1081)
• Pages: 38-42
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1081.38
• Online since: December 2014
• Authors: Zhen Feng Wang, Wen Yuan Wu*, Xue Bian, Shou Feng Xue
• Keywords: Auxiliary Reagent, Lanthanum Chloride, Lanthanum Oxide, Spray Pyrolysis

References

[1] Musun Guo, Hongzhong Li. Manual of fluidization. Beijing: Chemical Industry Press. 2007. 1048-1052.

[2] Yongan Wang, Mengtian Bai, Junrong Zhang, et. al. A fluidized bed device to pyrolytic preparation of oxide by salt aqueous solution. CN92224073. 6, (1993).

[3] Kawasaki heavy ind. Ltd. Treating waste washing liquor used on iron or steel - to recover iron chloride and hydrochloric acid. JP48094699-A, (1974).

[4] Kawasaki steel corp. Oxide material prepn. for ferrite core with improved homogeneity - by spraying mixed aq. chloride soln. into furnace, while spraying zinc and/or copper oxide slurry into zone where soln. is converted to oxide or spinel-type ferrite. JP4369806-A; JP2846149-B2, (1993).

[5] Kawasaki steel corp. Method of producing iron oxide as raw material of ferrite - by spraying aqueous ferrous and/or ferric chloride into roasting furnace to give hydrochloric acid and ferrite, using dual liquid nozzle. JP9249420-A, (1997).

[6] Kawasaki steel corp. Supply of aqueous iron chloride solution to roasting furnace for producing iron oxide comprises removing solid content in an aqueous iron chloride solution using solid-liquid separator and liquid cyclone. JP 2001026426-A, (2001).

[7] Jewell C.J., Marcotte B. Iron Control in Hydrometallurg. Toronto: Ellis Howard Ltd., 1986, 507–519. ( Regeneration of hydrochloric acid waste pickle liquor using a fluidized bed reactor system).

[8] Lin Xuanjing. The regeneration process of hydrochloric acid lotion and fluidized bed control . Journal of chemical industry environmental protection, 1990, 3 (10) : 157-163.

[9] Yuntao Hong, Liang Qiao, Xinghua Liu. Application of Ruthner-spray hydrochloric acid regeneration technology in cold rolling. The modern chemical industry, 2005, 25(1): 48-50.

[10] Guangsheng Zhou, Naiwei Ye. FaultAnalysis and Solution of theW aste Acid Roasting＆Regeneration System for Stainless SteelPickling Lines. Baosteel technology, 2005(6): 46-48.

[11] Xingming He, Anxi He , Xiuyun Chen, et. Al. Stuydy on the recovery of high purity iron oxide from pickling waste liouor of steel sheet. Steel vanadium and titanium, 2000, 21(4): 18-22.

[12] Gu Mingyan, Chen Guang, Liu qing. Determination of control parameters for Producing high quality ferric oxide powder in acid pegenrator. Metallurgical energy, 2003, 22(1): 24-26.

[13] Marcus Beck, Viktor Scherer, Siegmar Wirtz. Experiments setup to examine Fe2O3 particle formation in spray roasting reactor. Chem. Eng. Technol. 2005, 28(6): 659-662.

DOI: 10.1002/ceat.200407130

[14] Vassilios Zaspalis, Marcel Kolenbrander. Design principles for spray-roasted iron oxides for the manufacturing of ferrites. Powder Technology, 2006, 161: 169-174.

DOI: 10.1016/j.powtec.2005.10.004

[15] Marcus Beck, Siegmar Wirtz, Viktor Scherer et al. Numerical calculations of spray roasting reactors of the steel industry with special emphasis on Fe2O3 particle formation. Chem. Eng. Technol. 2007, 30(10): 1347-1354.

DOI: 10.1002/ceat.200700231

[16] Frithum. G. Procedure for increasing the specific surface of iron oxides in spray roasting regeneration plants useful as by-product for the production of magnetic material, comprises introducing vapor and air below a burner level of a reactor. PN WO2008070885-A2; WO2008070885-A3, (2008).

[17] Magdalena Regel-Rosocka. A review on methods of regeneration of spent pickling solutions from steel processing. Journal of Hazardous Materials, 2010, 177: 57-69.

DOI: 10.1016/j.jhazmat.2009.12.043

[18] Ma. X, Zhang. H and Ji. Y. Synthesis of ultrafine lanthanum hydroxide nanorods by a simple hydrothermal process. Mater. Lett, Vol. 58(2004), p.1180.

DOI: 10.1016/j.matlet.2003.08.031

[19] Neumann. A, Walter. D. The thermal transformation from lanthanum hydroxide to lanthanum hydroxide oxide. Thermochim. Acta Vol. 445(2006), p.200.

DOI: 10.1016/j.tca.2005.06.013

[20] Mekhemer. G, Balboul. B. Thermal genesis course and characterization of lanthanum oxide. Colloids Surf. A , Vol. 181(2001), p.19.

DOI: 10.1016/s0927-7757(00)00731-7

[21] Hou. B, Xu Y and Wu D. Synthesis and characteri-zation of ultralong lanthanum hydroxide nanorods via sol-vothermal method. J. Mater. Sci, Vol. 42(2007), p.1397.

DOI: 10.1007/s10853-006-0122-8

[22] Wang X, Li Y. Synthesis and characterization of lanthanide hydroxide single crystal nanowires. Angew. Chem. Int. Ed. Vol. 41(2002), p.4790.

DOI: 10.1002/anie.200290049

[23] Tang. B, Ge. J and Wu. C. Solvothermal synthesis and microwave evolution of La(OH)3 nanorods to La2O3 nanorods. Nano-technology. Vol. 15(2004), p.1273.

DOI: 10.1088/0957-4484/15/9/027

[24] Pan Z, Dai, Z and Wang Z . Lead oxide nanobelts and phase transformation induced by electron beam irradiation. Appl. Phys. Lett. Vol. 80(2002), p.309.

DOI: 10.1063/1.1432749

[25] Bouyer F, Sanson N and Destarac M. Hydrophilic block copolymerdirected growth of lanthanum hydroxide nanoparticles. New J. Chem. Vol. 30(2006), p.99.

DOI: 10.1039/b516368d