Synthesis of strontium titanate from celestite concentrate

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Ehrambaf Leila; SETOUDEH NADER; Askari Zamani Mohammad Ali; HAYATI RAZIYEH

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Journal: JOURNAL OF NEW MATERIALS Year:2019 | Volume:10 | Issue:1 (37) Page(s): 105-118

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Title

Synthesis of strontium titanate from celestite concentrate

Author(s)

Ehrambaf Leila | SETOUDEH NADER | Askari Zamani Mohammad Ali | HAYATI RAZIYEH | Issue Writer Certificate

Keywords

AnataseQ2

CelestiteQ2

MillingQ2

PerovskiteQ1

SrTiO3Q1

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.

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APA: Copy

Ehrambaf, Leila, SETOUDEH, NADER, Askari Zamani, Mohammad Ali, & HAYATI, RAZIYEH. (2019). Synthesis of strontium titanate from celestite concentrate. JOURNAL OF NEW MATERIALS, 10(1 (37) ), 105-118. SID. https://sid.ir/paper/169850/en

Vancouver: Copy

Ehrambaf Leila, SETOUDEH NADER, Askari Zamani Mohammad Ali, HAYATI RAZIYEH. Synthesis of strontium titanate from celestite concentrate. JOURNAL OF NEW MATERIALS[Internet]. 2019;10(1 (37) ):105-118. Available from: https://sid.ir/paper/169850/en

IEEE: Copy

Leila Ehrambaf, NADER SETOUDEH, Mohammad Ali Askari Zamani, and RAZIYEH HAYATI, “Synthesis of strontium titanate from celestite concentrate,” JOURNAL OF NEW MATERIALS, vol. 10, no. 1 (37) , pp. 105–118, 2019, [Online]. Available: https://sid.ir/paper/169850/en

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