Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation

Vanadium phosphorus oxide (VPO) catalysts synthesized via hydrothermal method were introduced with some different dopants, Cr, Ni, Fe, and Mn during the preparation of the precursors, VOHPO4 · 0.5H2O. All modified precursors were subsequently transformed under reaction conditions to give the active...

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Main Authors:	Yap, Taufiq Yun Hin, Theam, Kok Leong, Hutchings, Graham John, Dummer, Nicholas F., Bartley, Jonathan K.
Format:	Article
Language:	English
Published:	Taylor & Francis 2010
Online Access:	http://psasir.upm.edu.my/id/eprint/14216/ http://psasir.upm.edu.my/id/eprint/14216/ http://psasir.upm.edu.my/id/eprint/14216/1/Effect%20of%20Cr%2C%20Ni%2C%20Fe%20and%20Mn%20dopants%20on%20the%20performance%20of%20hydrothermal%20synthesized%20vanadium%20phosphate%20catalysts%20for%20n-butane%20oxidation.pdf

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recordtype	eprints
spelling	upm-142162016-11-25T07:48:50Z http://psasir.upm.edu.my/id/eprint/14216/ Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation Yap, Taufiq Yun Hin Theam, Kok Leong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K. Vanadium phosphorus oxide (VPO) catalysts synthesized via hydrothermal method were introduced with some different dopants, Cr, Ni, Fe, and Mn during the preparation of the precursors, VOHPO4 · 0.5H2O. All modified precursors were subsequently transformed under reaction conditions to give the active phase, (VO)2P2O7. Several techniques were used to characterize the physicochemical properties of the catalysts, such as X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), H2-temperature programmed reduction (TPR), laser Raman spectroscopy (LRS), and chemical analysis. The catalytic performance of the catalysts for selective oxidation of n-butane to maleic anhydride has been carried out by using a fixed bed microreactor (673 K, gas hourly space velocity [GHSV] = 2,400 hr-1). The results show that the addition of dopants into the VPO catalysts increased the surface area of the catalysts and induced the formation of V5+ phases as shown in XRD and LRS spectra that promoted the catalytic performance. A further water reflux treatment to all the precursors gave catalysts with only (VO)2P2O7 phase. However, the activity and selectivity of these catalysts were reduced markedly. Taylor & Francis 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/14216/1/Effect%20of%20Cr%2C%20Ni%2C%20Fe%20and%20Mn%20dopants%20on%20the%20performance%20of%20hydrothermal%20synthesized%20vanadium%20phosphate%20catalysts%20for%20n-butane%20oxidation.pdf Yap, Taufiq Yun Hin and Theam, Kok Leong and Hutchings, Graham John and Dummer, Nicholas F. and Bartley, Jonathan K. (2010) Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation. Petroleum Science and Technology, 28 (10). pp. 997-1012. ISSN 1091-6466; ESSN: 1532-2459 10.1080/10916460903058004
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Putra Malaysia
building	UPM Institutional Repository
collection	Online Access
language	English
description	Vanadium phosphorus oxide (VPO) catalysts synthesized via hydrothermal method were introduced with some different dopants, Cr, Ni, Fe, and Mn during the preparation of the precursors, VOHPO4 · 0.5H2O. All modified precursors were subsequently transformed under reaction conditions to give the active phase, (VO)2P2O7. Several techniques were used to characterize the physicochemical properties of the catalysts, such as X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), H2-temperature programmed reduction (TPR), laser Raman spectroscopy (LRS), and chemical analysis. The catalytic performance of the catalysts for selective oxidation of n-butane to maleic anhydride has been carried out by using a fixed bed microreactor (673 K, gas hourly space velocity [GHSV] = 2,400 hr-1). The results show that the addition of dopants into the VPO catalysts increased the surface area of the catalysts and induced the formation of V5+ phases as shown in XRD and LRS spectra that promoted the catalytic performance. A further water reflux treatment to all the precursors gave catalysts with only (VO)2P2O7 phase. However, the activity and selectivity of these catalysts were reduced markedly.
format	Article
author	Yap, Taufiq Yun Hin Theam, Kok Leong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K.
spellingShingle	Yap, Taufiq Yun Hin Theam, Kok Leong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K. Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation
author_facet	Yap, Taufiq Yun Hin Theam, Kok Leong Hutchings, Graham John Dummer, Nicholas F. Bartley, Jonathan K.
author_sort	Yap, Taufiq Yun Hin
title	Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation
title_short	Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation
title_full	Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation
title_fullStr	Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation
title_full_unstemmed	Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation
title_sort	effect of cr, ni, fe and mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation
publisher	Taylor & Francis
publishDate	2010
url	http://psasir.upm.edu.my/id/eprint/14216/ http://psasir.upm.edu.my/id/eprint/14216/ http://psasir.upm.edu.my/id/eprint/14216/1/Effect%20of%20Cr%2C%20Ni%2C%20Fe%20and%20Mn%20dopants%20on%20the%20performance%20of%20hydrothermal%20synthesized%20vanadium%20phosphate%20catalysts%20for%20n-butane%20oxidation.pdf
first_indexed	2018-09-07T13:29:47Z
last_indexed	2018-09-07T13:29:47Z
_version_	1610955607611801600

Effect of Cr, Ni, Fe and Mn dopants on the performance of hydrothermal synthesized vanadium phosphate catalysts for n-butane oxidation

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