Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride
In this paper, the preparation of vanadium phosphate catalysts was shown to be improved by (1) using V2O5 and ethylene glycol as starting and reducing agent material, respectively for VOPO4 · 2H2O, (2) subsequent water treatment and (3) microwave irradiation. In particular, the preparation route, ba...
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| Format: | Article |
| Language: | English |
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Springer
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/15218/ http://psasir.upm.edu.my/id/eprint/15218/1/Influence%20of%20the%20ethylene%20glycol%2C%20water%20treatment%20and%20microwave%20irradiation%20on%20the%20characteristics%20and%20performance%20of%20VPO%20catalysts%20for%20n-butane%20oxidation%20to%20maleic%20anhydride.pdf |
| _version_ | 1848842615113383936 |
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| author | Rownaghi, Ali Asghar Yap, Taufiq Yun Hin Tang, Wen Jiunn |
| author_facet | Rownaghi, Ali Asghar Yap, Taufiq Yun Hin Tang, Wen Jiunn |
| author_sort | Rownaghi, Ali Asghar |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | In this paper, the preparation of vanadium phosphate catalysts was shown to be improved by (1) using V2O5 and ethylene glycol as starting and reducing agent material, respectively for VOPO4 · 2H2O, (2) subsequent water treatment and (3) microwave irradiation. In particular, the preparation route, based on the reduction of VOPO4 · 2H2O with various alcohols, is described in detail and contrasted with other three established methods performed by using ethylene glycol and isobutyl alcohol as reductant and solvent for V2O5 or distilled water as a solvent material. The preparation of catalyst precursor is carried out by two different methods, namely conventional heating and microwave irradiation. With this new technique, catalysts derived from the reduction of VOPO4 · 2H2O by ethylene glycol exhibit substantially higher surface area (typically >40 m2 g−1) and activity. In fact, the surface area of the catalyst is significantly enhanced when the precursor is refluxed by distilled water and dried by microwave heating. The characterization of catalysts was carried out using X-ray diffraction (XRD), Brunauer–Emmer–Teller (BET) surface area measurement, temperature programmed reduction (H2-TPR), temperature-programmed reaction (TPRn) and scanning electron microscopy (SEM). This study shows that employing ethylene glycol as reducing agent, followed by adding the water treatment step to catalyst synthesis procedure, and using microwave irradiation would give rise to enhanced surface area, activity and selectivity of the catalyst. Moreover, it introduces a more energy efficient procedure for preparation of vanadium phosphate catalyst used in selective oxidation of n-butane process. |
| first_indexed | 2025-11-15T08:01:57Z |
| format | Article |
| id | upm-15218 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:01:57Z |
| publishDate | 2009 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-152182019-05-09T01:27:37Z http://psasir.upm.edu.my/id/eprint/15218/ Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride Rownaghi, Ali Asghar Yap, Taufiq Yun Hin Tang, Wen Jiunn In this paper, the preparation of vanadium phosphate catalysts was shown to be improved by (1) using V2O5 and ethylene glycol as starting and reducing agent material, respectively for VOPO4 · 2H2O, (2) subsequent water treatment and (3) microwave irradiation. In particular, the preparation route, based on the reduction of VOPO4 · 2H2O with various alcohols, is described in detail and contrasted with other three established methods performed by using ethylene glycol and isobutyl alcohol as reductant and solvent for V2O5 or distilled water as a solvent material. The preparation of catalyst precursor is carried out by two different methods, namely conventional heating and microwave irradiation. With this new technique, catalysts derived from the reduction of VOPO4 · 2H2O by ethylene glycol exhibit substantially higher surface area (typically >40 m2 g−1) and activity. In fact, the surface area of the catalyst is significantly enhanced when the precursor is refluxed by distilled water and dried by microwave heating. The characterization of catalysts was carried out using X-ray diffraction (XRD), Brunauer–Emmer–Teller (BET) surface area measurement, temperature programmed reduction (H2-TPR), temperature-programmed reaction (TPRn) and scanning electron microscopy (SEM). This study shows that employing ethylene glycol as reducing agent, followed by adding the water treatment step to catalyst synthesis procedure, and using microwave irradiation would give rise to enhanced surface area, activity and selectivity of the catalyst. Moreover, it introduces a more energy efficient procedure for preparation of vanadium phosphate catalyst used in selective oxidation of n-butane process. Springer 2009 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/15218/1/Influence%20of%20the%20ethylene%20glycol%2C%20water%20treatment%20and%20microwave%20irradiation%20on%20the%20characteristics%20and%20performance%20of%20VPO%20catalysts%20for%20n-butane%20oxidation%20to%20maleic%20anhydride.pdf Rownaghi, Ali Asghar and Yap, Taufiq Yun Hin and Tang, Wen Jiunn (2009) Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride. Catalysis Letters, 130 (3-4). pp. 593-603. ISSN 1011-372X; ESSN: 1572-879X https://link.springer.com/article/10.1007%2Fs10562-009-9951-9 10.1007/s10562-009-9951-9 |
| spellingShingle | Rownaghi, Ali Asghar Yap, Taufiq Yun Hin Tang, Wen Jiunn Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride |
| title | Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride |
| title_full | Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride |
| title_fullStr | Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride |
| title_full_unstemmed | Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride |
| title_short | Influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of VPO catalysts for n-butane oxidation to maleic anhydride |
| title_sort | influence of the ethylene glycol, water treatment and microwave irradiation on the characteristics and performance of vpo catalysts for n-butane oxidation to maleic anhydride |
| url | http://psasir.upm.edu.my/id/eprint/15218/ http://psasir.upm.edu.my/id/eprint/15218/ http://psasir.upm.edu.my/id/eprint/15218/ http://psasir.upm.edu.my/id/eprint/15218/1/Influence%20of%20the%20ethylene%20glycol%2C%20water%20treatment%20and%20microwave%20irradiation%20on%20the%20characteristics%20and%20performance%20of%20VPO%20catalysts%20for%20n-butane%20oxidation%20to%20maleic%20anhydride.pdf |