Volume 35, Issue 1 (Journal of Advanced Materials-Spring 2016)                   jame 2016, 35(1): 47-55 | Back to browse issues page

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Deljavan S, Kakroudi M G, Zaroodi J, Rezaei F. Investigation of Tantalum Cation Doped Ba (Co0.8Fe0.2) O3−δ Perovskite Phase. jame. 2016; 35 (1) :47-55
URL: http://jame.iut.ac.ir/article-1-785-en.html
1- Materials Engineering Department, Faculty of Mechanical Engineering, University of Tabriz, Tabriz, Iran , sevil.deljavan@gmail.com
Abstract:   (6353 Views)

Perovskite structures including oxygen vacancies are the most important group of the oxygen preamble membranes. These membranes have potentially attractive applications in the membrane reactors for partial oxidation of methane. Doping Perovskite phase in order to increase the oxygen vacancies and oxygen permeation, besides Perovskite structure stability, has been the main approach of the recent researches. In this research, tantalum was chosen as the appropriate dopant for Ba(Co0.8Fe0.2)O3−δ  Perovskite phase, according to the tolerance factor calculations. The X ray patterns of synthesized Ba (Co0.7Fe0.2Ta0.1)O3−δ indicate that the Perovskite structure was formed. Powder density, thermal expansion coefficient measurements and bond strength studies using FT-IR analysis revealed that the chosen dopant not only increases the oxygen vacancies volume but also reduces the thermal expansion coefficient without significant changes of bond strength. Results showed that the novel Ba (Co0.7Fe0.2Ta0.1) O3−δ is a good choice for the membrane fabrication of methane partial reduction reactors.

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Type of Study: Research | Subject: General
Received: 2016/06/14 | Accepted: 2016/06/14 | Published: 2016/06/14

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