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    Abstract
2018 (Vol. 15, Issue: 2)
Research Article

Comparative Study of Influence of Anions on Thermal Behavior of Nanosized Alumina

1Fadia Shaheen, 2Muhammad Irfan, 3Tayyaba Ahmad, 1Bakht Bahadur Rana, 1Rashad Mahmood and 4Muhammad Latif Mirza
1Glass and Ceramic Research Centre
2PITMAEM, PCSIR Laboratories Complex, Lahore, 54000
3Applied Chemistry Research Centre, PCSIR Laboratories Complex, Lahore, 54000
4Department of Chemistry, University of Sargodha, Sargodha, 40410, Pakistan
 

DOI: 10.19026/rjaset.15.5293
Submitted Accepted Published
August 10, 2017 September 29, 2017 February 15, 2018

  How to Cite this Article:

1Fadia Shaheen, 2Muhammad Irfan, 3Tayyaba Ahmad, 1Bakht Bahadur Rana, 1Rashad Mahmood and 4Muhammad Latif Mirza, 2018. Comparative Study of Influence of Anions on Thermal Behavior of Nanosized Alumina.  Research Journal of Applied Sciences, Engineering and Technology, 15(2): 68-75.

DOI: 10.19026/rjaset.15.5293

URL: http://www.maxwellsci.com/jp/mspabstract.php?jid=RJASET&doi=rjaset.15.5293

Abstract:


Nanoalumina precursors homogeneously precipitated from aluminum nitrate and aluminum chloride were investigated for their thermal transitions and structural transformations. From both the monovalent anionic salts under identical reaction conditions, alumina precursors derived were same i.e., pseudoboehmite but their thermal behavior was different. Pseudoboehmite prepared from nitrate was amorphous and prone to dehydroxylation and subsequent calcination while pseudoboehmite prepared from chloride had relatively higher crystallinity and delayed dehydroxylation and calcination. In case of nitrate, life duration of gamma alumina was brief i.e., up to 350C whereas it in case of chloride it showed off at 375 and persisted up to 800C. Consequently, the complete formation of alpha alumina occurred at 1150C in the former case while alpha phase was in process of its conversion from theta phase in this temperature regime in the latter case. DSC-TG, XRD, SEM, etc. were carried out for the characterization.

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    Competing interests

The authors have no competing interests.
    Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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© The Author(s) 2018

ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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