Influences of temperature and atmosphere on thermal stability of BaCrO 4

Xue Song Liang; Jia Hu Ouyang; Zhan Guo Liu

doi:10.1007/s10973-012-2368-5

Influences of temperature and atmosphere on thermal stability of BaCrO ₄

Xue Song Liang
, Jia Hu Ouyang^*
, Zhan Guo Liu

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

In this article, the influences of temperature and atmosphere on thermal stability of BaCrO₄ were investigated. BaCrO₄ powders with an orthorhombic structure were synthesized by a facile aqueous solution route. The synthesized BaCrO₄ products were then heat treated at different atmospheres to evaluate their thermal stability by differential thermal analysis-thermogravimetry (DTA-TG), X-ray photoelectron spectroscopy and X-ray diffraction. BaCrO₄ has a good thermal stability and does not decompose in air up to 1,400 C. However, the decomposition of BaCrO₄ in vacuum depends mainly upon a two-stage chemical reaction. BaCrO₄ is finally decomposed into BaCr₂O₄ with trivalent Cr ³⁺ cations and Ba₃(Cr⁶⁺ Cr⁵⁺) ₂O_9-x with both pentavalent Cr⁵⁺ and hexavalent Cr⁶⁺ cations after heat treatments in vacuum.

Original language	English
Pages (from-to)	371-375
Number of pages	5
Journal	Journal of Thermal Analysis and Calorimetry
Volume	111
Issue number	1
DOIs	https://doi.org/10.1007/s10973-012-2368-5
State	Published - Jan 2013
Externally published	Yes

Keywords

Atmosphere
Ba(Cr,Cr)O
BaCrO
BaCrO
Thermal stability

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10.1007/s10973-012-2368-5

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title = "Influences of temperature and atmosphere on thermal stability of BaCrO 4",

abstract = "In this article, the influences of temperature and atmosphere on thermal stability of BaCrO4 were investigated. BaCrO4 powders with an orthorhombic structure were synthesized by a facile aqueous solution route. The synthesized BaCrO4 products were then heat treated at different atmospheres to evaluate their thermal stability by differential thermal analysis-thermogravimetry (DTA-TG), X-ray photoelectron spectroscopy and X-ray diffraction. BaCrO4 has a good thermal stability and does not decompose in air up to 1,400 C. However, the decomposition of BaCrO4 in vacuum depends mainly upon a two-stage chemical reaction. BaCrO4 is finally decomposed into BaCr2O4 with trivalent Cr 3+ cations and Ba3(Cr6+ Cr5+) 2O9-x with both pentavalent Cr5+ and hexavalent Cr6+ cations after heat treatments in vacuum.",

keywords = "Atmosphere, Ba(Cr,Cr)O, BaCrO, BaCrO, Thermal stability",

author = "Liang, \{Xue Song\} and Ouyang, \{Jia Hu\} and Liu, \{Zhan Guo\}",

year = "2013",

month = jan,

doi = "10.1007/s10973-012-2368-5",

language = "英语",

volume = "111",

pages = "371--375",

journal = "Journal of Thermal Analysis and Calorimetry",

issn = "1388-6150",

publisher = "Springer Science and Business Media B.V.",

number = "1",

}

TY - JOUR

T1 - Influences of temperature and atmosphere on thermal stability of BaCrO 4

AU - Liang, Xue Song

AU - Ouyang, Jia Hu

AU - Liu, Zhan Guo

PY - 2013/1

Y1 - 2013/1

N2 - In this article, the influences of temperature and atmosphere on thermal stability of BaCrO4 were investigated. BaCrO4 powders with an orthorhombic structure were synthesized by a facile aqueous solution route. The synthesized BaCrO4 products were then heat treated at different atmospheres to evaluate their thermal stability by differential thermal analysis-thermogravimetry (DTA-TG), X-ray photoelectron spectroscopy and X-ray diffraction. BaCrO4 has a good thermal stability and does not decompose in air up to 1,400 C. However, the decomposition of BaCrO4 in vacuum depends mainly upon a two-stage chemical reaction. BaCrO4 is finally decomposed into BaCr2O4 with trivalent Cr 3+ cations and Ba3(Cr6+ Cr5+) 2O9-x with both pentavalent Cr5+ and hexavalent Cr6+ cations after heat treatments in vacuum.

AB - In this article, the influences of temperature and atmosphere on thermal stability of BaCrO4 were investigated. BaCrO4 powders with an orthorhombic structure were synthesized by a facile aqueous solution route. The synthesized BaCrO4 products were then heat treated at different atmospheres to evaluate their thermal stability by differential thermal analysis-thermogravimetry (DTA-TG), X-ray photoelectron spectroscopy and X-ray diffraction. BaCrO4 has a good thermal stability and does not decompose in air up to 1,400 C. However, the decomposition of BaCrO4 in vacuum depends mainly upon a two-stage chemical reaction. BaCrO4 is finally decomposed into BaCr2O4 with trivalent Cr 3+ cations and Ba3(Cr6+ Cr5+) 2O9-x with both pentavalent Cr5+ and hexavalent Cr6+ cations after heat treatments in vacuum.

KW - Atmosphere

KW - Ba(Cr,Cr)O

KW - BaCrO

KW - Thermal stability

UR - https://www.scopus.com/pages/publications/84872487427

U2 - 10.1007/s10973-012-2368-5

DO - 10.1007/s10973-012-2368-5

M3 - 文章

AN - SCOPUS:84872487427

SN - 1388-6150

VL - 111

SP - 371

EP - 375

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

IS - 1

ER -

Influences of temperature and atmosphere on thermal stability of BaCrO ₄

Abstract

Keywords

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