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Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts


Citation

Mohd Noor, Syazwani and Ramli, Irmawati and Yap, Taufiq Yun Hin and Zainuddin, Norhazlin (2016) Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts. Malaysian Journal of Analytical Sciences, 20 (5). pp. 1073-1083. ISSN 1394-2506

Abstract

A range of MoVTeNbOx catalysts were synthesised by slurry method assisted with a microwave irradiation. The pH of the synthesis solution was varied at pH = 1, 3, 5, and 7 and the obtained solid were calcined in air at 553 K for 1 hour and followed in N2 at 873 K for 2 hours. The calcined samples were characterised and their reduction properties were evaluated. The pH of the synthesis solution was shown to affect the physicochemical properties where the formation of orthorhombic M1 phase was obtained for catalysts prepared at pH 1 and 3. The reducibility of the catalyst is improved for catalyst prepared at pH 3 as compared to those prepared at pH 1. Although higher synthesised pH (5 and 7) gave much higher reducibility of the metal oxides, however the removable oxygen could be of the unselective ones.


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Official URL or Download Paper: http://www.ukm.my/mjas/mjas2018/

Additional Metadata

Item Type: Article
Subject: MoVTeNbOx catalysts; pH; Reducibility; Propane; Acrylic acid
Divisions: Faculty of Science
DOI Number: https://doi.org/10.17576/mjas-2016-2005-12
Publisher: Malaysian Analytical Sciences Society
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 26 Feb 2018 08:34
Last Modified: 26 Feb 2018 08:34
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.17576/mjas-2016-2005-12
URI: http://psasir.upm.edu.my/id/eprint/54042
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