Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts
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 wer...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Malaysian Analytical Sciences Society
2016
|
| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/54042/ http://psasir.upm.edu.my/id/eprint/54042/1/Effect%20of%20pH%20on%20the%20physicochemical%20properties%20and%20reducibility%20of%20MoVTeNbOx%20catalysts.pdf |
| _version_ | 1848852438953492480 |
|---|---|
| author | Mohd Noor, Syazwani Ramli, Irmawati Yap, Taufiq Yun Hin Zainuddin, Norhazlin |
| author_facet | Mohd Noor, Syazwani Ramli, Irmawati Yap, Taufiq Yun Hin Zainuddin, Norhazlin |
| author_sort | Mohd Noor, Syazwani |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-15T10:38:05Z |
| format | Article |
| id | upm-54042 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:38:05Z |
| publishDate | 2016 |
| publisher | Malaysian Analytical Sciences Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-540422018-02-26T08:34:06Z http://psasir.upm.edu.my/id/eprint/54042/ Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts Mohd Noor, Syazwani Ramli, Irmawati Yap, Taufiq Yun Hin Zainuddin, Norhazlin 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. Malaysian Analytical Sciences Society 2016-10 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/54042/1/Effect%20of%20pH%20on%20the%20physicochemical%20properties%20and%20reducibility%20of%20MoVTeNbOx%20catalysts.pdf 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 http://www.ukm.my/mjas/mjas2018/ MoVTeNbOx catalysts; pH; Reducibility; Propane; Acrylic acid 10.17576/mjas-2016-2005-12 |
| spellingShingle | MoVTeNbOx catalysts; pH; Reducibility; Propane; Acrylic acid Mohd Noor, Syazwani Ramli, Irmawati Yap, Taufiq Yun Hin Zainuddin, Norhazlin Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts |
| title | Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts |
| title_full | Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts |
| title_fullStr | Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts |
| title_full_unstemmed | Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts |
| title_short | Effect of pH on the physicochemical properties and reducibility of MoVTeNbOx catalysts |
| title_sort | effect of ph on the physicochemical properties and reducibility of movtenbox catalysts |
| topic | MoVTeNbOx catalysts; pH; Reducibility; Propane; Acrylic acid |
| url | http://psasir.upm.edu.my/id/eprint/54042/ http://psasir.upm.edu.my/id/eprint/54042/ http://psasir.upm.edu.my/id/eprint/54042/ http://psasir.upm.edu.my/id/eprint/54042/1/Effect%20of%20pH%20on%20the%20physicochemical%20properties%20and%20reducibility%20of%20MoVTeNbOx%20catalysts.pdf |