Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts
VOHPO 4•0.5H 2O synthesized via the alcohol reduction of VOPO 4•2H 2O was mechanochemical treated for 30 min in three different media, i.e. cyclohexane, ethanol and air. XRD results revealed that their structure became less crystalline compared to the unmilled material. SEM showed that the particles...
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Springer
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/24628/ http://psasir.upm.edu.my/id/eprint/24628/1/Influence%20of%20milling%20media%20on%20the%20physicochemicals%20and%20catalytic%20properties%20of%20mechanochemical%20treated%20vanadium%20phosphate%20catalysts.pdf |
| _version_ | 1848845088373866496 |
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| author | Yap, Taufiq Yun Hin Goh, Chee Keong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K. |
| author_facet | Yap, Taufiq Yun Hin Goh, Chee Keong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K. |
| author_sort | Yap, Taufiq Yun Hin |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | VOHPO 4•0.5H 2O synthesized via the alcohol reduction of VOPO 4•2H 2O was mechanochemical treated for 30 min in three different media, i.e. cyclohexane, ethanol and air. XRD results revealed that their structure became less crystalline compared to the unmilled material. SEM showed that the particles for the milled materials become smaller and unique features were observed in the different type of media used. The reactivity of the oxygen species linked to V 5+ and V 4+ were also affected by the milling process. The selectivity to maleic anhydride from n-butane oxidation were observed to increase in line with the increase in the oxygen species associated with V 5+ and the presence of isolated V 5+ phase. A correlation was observed between the crystallite size of the pyrophosphate phase at (020) plane with the maleic anhydride selectivity. |
| first_indexed | 2025-11-15T08:41:15Z |
| format | Article |
| id | upm-24628 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:41:15Z |
| publishDate | 2011 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-246282016-11-25T04:29:20Z http://psasir.upm.edu.my/id/eprint/24628/ Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts Yap, Taufiq Yun Hin Goh, Chee Keong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K. VOHPO 4•0.5H 2O synthesized via the alcohol reduction of VOPO 4•2H 2O was mechanochemical treated for 30 min in three different media, i.e. cyclohexane, ethanol and air. XRD results revealed that their structure became less crystalline compared to the unmilled material. SEM showed that the particles for the milled materials become smaller and unique features were observed in the different type of media used. The reactivity of the oxygen species linked to V 5+ and V 4+ were also affected by the milling process. The selectivity to maleic anhydride from n-butane oxidation were observed to increase in line with the increase in the oxygen species associated with V 5+ and the presence of isolated V 5+ phase. A correlation was observed between the crystallite size of the pyrophosphate phase at (020) plane with the maleic anhydride selectivity. Springer 2011-03 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24628/1/Influence%20of%20milling%20media%20on%20the%20physicochemicals%20and%20catalytic%20properties%20of%20mechanochemical%20treated%20vanadium%20phosphate%20catalysts.pdf Yap, Taufiq Yun Hin and Goh, Chee Keong and Hutchings, Graham John and Dummer, Nicholas F. and Bartley, Jonathan K. (2011) Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts. Catalysis Letters, 141 (3). pp. 400-407. ISSN 1011-372X; ESSN: 1572-879X http://rd.springer.com/article/10.1007%2Fs10562-010-0508-8 10.1007/s10562-010-0508-8 |
| spellingShingle | Yap, Taufiq Yun Hin Goh, Chee Keong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K. Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts |
| title | Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts |
| title_full | Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts |
| title_fullStr | Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts |
| title_full_unstemmed | Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts |
| title_short | Influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts |
| title_sort | influence of milling media on the physicochemicals and catalytic properties of mechanochemical treated vanadium phosphate catalysts |
| url | http://psasir.upm.edu.my/id/eprint/24628/ http://psasir.upm.edu.my/id/eprint/24628/ http://psasir.upm.edu.my/id/eprint/24628/ http://psasir.upm.edu.my/id/eprint/24628/1/Influence%20of%20milling%20media%20on%20the%20physicochemicals%20and%20catalytic%20properties%20of%20mechanochemical%20treated%20vanadium%20phosphate%20catalysts.pdf |