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A novel approach to synthesis of nanosize MgAl2O4 spinel powder through sol-gel citrate technique and subsequent heat treatment

Title data

Saberi, Ali ; Golestani-Fard, Farhad ; Willert-Porada, Monika ; Negahdari, Zahra ; Liebscher, Christian H. ; Gossler, Benjamin:
A novel approach to synthesis of nanosize MgAl2O4 spinel powder through sol-gel citrate technique and subsequent heat treatment.
In: Ceramics International. Vol. 35 (April 2009) Issue 3 . - pp. 933-937.
ISSN 1873-3956
DOI: https://doi.org/10.1016/j.ceramint.2008.03.011

Official URL: Volltext

Abstract in another language

This paper summarizes a study on the influence of heat-treatment atmosphere in synthesis of nanosize MgAl2O4 spinel powder employing sol-gel citrate route. Based on measurement of BET specific surface area, crystallite size, simultaneous thermal analysis, and microscopic observation, it was clarified that the argon atmosphere used for heat treatment of precursor reduced the particle size of synthesized ceramic powder significantly. Comparing with heat treatment in air atmosphere, it was elucidated that the carbonaceous material remaining from citrates has an important role in hindering the particle sintering. Also the slower heat generation in argon atmosphere creates a chance to achieve a nanocrystalline MgAl2O4 spinel powder with crystallite size in the range of 5-7 nm. The present novel approach shows that the argon treatment confronts the problem of sudden heat generation in sol--gel citrate method to synthesize nanosize MgAl2O4 spinel particles in the range of 20-100 nm.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Chemical preparation;Calcination;X-ray methods;Electron microscopy
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Ehemalige Professoren > Chair Materials Processing - Univ.-Prof. Dr. Monika Willert-Porada
Profile Fields > Advanced Fields > Polymer and Colloid Science
Faculties
Faculties > Faculty of Engineering Science > Chair Materials Processing
Profile Fields
Profile Fields > Advanced Fields
Faculties > Faculty of Engineering Science > Ehemalige Professoren
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 04 May 2015 12:23
Last Modified: 24 Feb 2016 12:15
URI: https://eref.uni-bayreuth.de/id/eprint/11258