Synthesis of strontium titanate from celestite concentrate

Subject Areas : journal of New Materials

Leila Ehrambaf ¹ (Materials Engineering Department- School of Engineering-Yasouj University, Yaouj, Iran)
Nader Setoudeh ² (Materials Engineering Department- School of Engineering- Yasouj University- Yasouj- Iran)
Mohammad Ali Askari Zamani ³ (Materials Engineering Department- School of Engineering-Yasouj University, Yaouj, Iran)
raziye hayati ⁴ (Department of Materials science, Faculty of Engineering, Yasouj University, Yasouj, Iran)

Received: 2019-04-15 Accepted : 2019-09-02 Published : 2019-10-23

Keywords: Milling, Perovskite, SrTiO3, Anatase, Celestite,

Abstract :

In this research perovskite phase of strontium titanate was produced from celestite concentrate (strontium sulphate). At first stage, the precursor of strontium carbonate was prepared from celestite-sodium carbonate mixture using mechanochemical process. Strontium titanate was synthesized using strontium carbonate-TiO2 mixture in the second stage. The results indicated that high energy ball milling plays a significant role in the chemical reaction and results in decreasing the temperature of post-heat treatment for producing of strontium titanate. Although some traces of rutile phase were overlapped with strontium carbonate, however no sign of chemical reaction observed in the10 hours milled mixtures of strontium carbonate-TiO2. TGA results showed that milling results in decreasing the formation temperature of perovskite strontium titanate phase in the milled mixtures. Although the traces of strontium titanate phase were revealed in the 5 hours milled mixture after isothermal heating at temperature of 600℃, the signs of un-reacted raw materials (TiO2 and SrCO3) were observed in un-milled mixture at this temperature. The traces of SrTiO3 were observed in un-milled and milled mixtures after heating at temperature of 900℃. XRD and FT-IR results indicated that strontium titanate can be synthesized form celestite concentrate (SrSO4) at lower temperatures using mechanochemical process. SEM micrographs showed that the ultrafine particles of strontium titanate (SrTiO3) can be formed in the milled samples.

References:

1-T. Wanjun and C. Donghua, “Synthesis of strontium titanate nanometer crystallites using a peroxide-based route”, Int. J. Appl. Ceram. Technol., Vol. 4(6), pp.549–553, 2007.

2-P. Balaya, M. Ahrens, L. Kienle, and J. Maier,” Synthesis and characterization of nanocrystalline SrTiO₃”, Journal of American Ceramic Society, Vol. 89(9), pp.2804–2811, 2006.

3-W.Y. Jeng, J.Hassan, M.Hashim, W.S. Yin and L.C. Yan, “Effect of milling time on microstructure, crystallite size and dielectric properties of SrTiO₃ ceramic synthesized via mechanical alloying method”, Advanced Materials Research, Vol. 364, pp. 388-392, 2012.

4-H. Liu, X. Sun, Q. Zhao, J. Xiao and Sh. Ouyang, “The syntheses and microstructures of tabular SrTiO₃ crystal”, Solid-State Electronics, Vol. 47, pp. 2295–2298, 2003.

5- J. Lee, H.C. Shin, J.C. Choi and S.C. Choi, “The electric properties of SrTiO₃ varistor prepared by co-precipitation process”, Journal of Micro Packaging Society, Vol.7 (3), pp. 7–11, 2000.

6- W. Xuewen, Zh. Zhiyong and Zh. Shuixian.“Preparation of nano-crystalline SrTiO₃ powder in sol-gel process”, Materials Science and Engineering B, Vol. 86, pp. 29-33, 2001.

7- S. J. Lee, P. Thiyagarajan and M. J. Lee, “Synthesis and characterization of strontium titanate powder via a simple polymer solution route”, Journal of Ceramic Processing Research. Vol. 9, No. 4, pp. 385-388, 2008.

8- Q. A. Zhu, J.G. Xu, Sh. Xiang, L. X. Chen and Zh. G. Tan, “Preparation of SrTiO₃ nanoparticles by the combination of solid phase grinding and low temperature calcining”, Materials Letters, Vol.65, pp. 873-875, 2011.

9- R. Ashiri and R. Ajami, “Sonochemical Synthesis of SrTiO₃ Nanocrystals at Low Temperature”, International Journal of Applied Ceramic Technology, Vol. 12, No. S2, pp. E202–E206, 2015.

10- C. Suryanarayana, Mechanical alloying and milling, Marcel Dekker New York, 2004.

11- N. Behmanesh, S. Heshmati-Manesh and A. Ataie, “Role of mechanical activation of precursors in solid state processing of nano-structured mullite phase”, Journal of Alloys and Compounds, Vol.450, pp.421–425, 2008.

12-نادر ستوده،" تاثیر آسیاب کاری پر انرژی روی دمای تشکیل فازهای محصول در سیستم آلومینیم-آلومینا- زیرکن"، مجله مواد پیشرفته در مهندسی، سال ۳۲ ، شمارة ٢، ص.89-77 ، پاییز 1392.

13- نادر ستوده، محمد علی عسکری زمانی و عباس محصل،"تاثیر فرآیند آسیاکاری مکانیکی بر احیا کربوترمیک زیرکن"، مجله مواد نوین، جلد 3، شماره 3،ص. 99-89، بهار 1392.

14- امین ربیعی زاده، ابوالقاسم عطایی و علی محمد هادیان،" تاثیر روش تولید نانوکامپوزیت آلومینا/دی بوراید تیتانیم بر رفتار تفجوشی و خواص قطعه تولیدشده"، محله مواد نوین، شماره 11، ص.59-45، بهار 1392.

15- R. D. Widodo, A. Manaf, V., Vekky R.R and D. H. Al-Janan, “The Effect of Milling Times and Annealing on Synthesis of Strontium Titanate Ceramics”, International Journal of Innovative Research in Advanced Engineering (IJIRAE), Vol.2, Issue 12, pp.66-70, 2015.

 

16- V. Berbenni, A. Marini and G. Bruni, “Effect of mechanical activation on the preparation of SrTiO₃ and Sr₂TiO₄ ceramics from the solid state system SrCO₃-TiO₂”, Journal of Alloys and Compounds, Vol. 329, pp. 230–238, 2001.

17- Y.M. Rangel-Hernandez, J.C. Rendon-Angeles, Z. Matamoros-Veloza, M.I. Pech-Canul, S. Diaz-de la Torre and K. Yanagisawa, “One-step synthesis of fine SrTiO₃ particles using SrSO₄ ore under alkaline hydrothermal conditions”, Chemical Engineering Journal, Vol. 155, pp. 483–492, 2009.  

18- نادر ستوده و محمد علی عسکری زمانی،"تهیه کربنات استرانسیم از سلستیت به روش مکانوشیمیایی"، طرح پژوهشی مصوب دانشگاه یاسوج، .1388

19- N. Setoudeh, N.J. Welham and S.M. Azami, “Dry mechanochemical conversion of SrSO₄ to SrCO₃”, Journal of Alloys and Compounds, Vol. 492, pp.389–391, 2010.

20- نادر ستوده، محمد علی عسکری زمانی و عباس محصل، "احیای کربوترمیک کنسانتره سلستیت معدن لیکک"، مجله مواد نوین، جلد1، شماره 3،ص. 33-44، بهار 1390.

21- N. Setoudeh, M. Ali Askari Zamani, and N.J. Welham, “Carbothermic Reduction of Mechanically Activated Mixtures of Celestite and Carbon”, World Academy Sci. Eng. and Tech., Vol.74, pp.531-534, 2011.

22- N. Setoudeh and N.J. Welham (2011) “Ball milling induced reduction of SrSO₄ by Al”, International Journal of Minerals Processing, Vol. 98, pp.214–218, 2011.

23- N. Setoudeh and N.J. Welham Mechanochemical reduction of SrSO₄ by Mg, International Journal of Minerals Processing, Vol. 104‑105, pp.49–52, 2012.

24- HSC Chemistry for Windows, version 5.1. 1994, Outokumpu, Oy.

25- S. Begin-Colin, G. Le Caer, A. Mocellin and M. Zandona, “Polymorphic Transformation of Titania Induced by Ball Milling”, Philosophical Magazine Letters, Vol. 69, pp.1-7,1994.

 

26- R.Ren, Z.Yang, and L.L. Shaw, “Polymorphic Transformation and Powder Characteristics of  TiO₂  During High Energy Milling”, Journal of Materials Science, Vol. 35, pp.6015-6026, 2000.

27- نادر ستوده، علی سعیدی، علی شفیعی و نیکلاس جی ولهام، "دگرگونی فازی آناتاز به روتیل در شرایط آسیاکاری و بدون آسیاکاری"،مجله استقلال، سال 25، شماره 1، ص.207-216، شهریور 1385.