The novel and highly selective fumed silica-supported VPO for partial oxidation of n-butane to maleic anhydride

C. Y. Xiao; X. Chen; Z. Y. Wang; W. J. Ji; Y. Chen; C. T. Au

doi:10.1016/j.cattod.2004.06.127

The novel and highly selective fumed silica-supported VPO for partial oxidation of n-butane to maleic anhydride

C. Y. Xiao, X. Chen, Z. Y. Wang, W. J. Ji^*, Y. Chen, C. T. Au

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Conference article › peer-review

31 Citations (Scopus)

Abstract

By applying fumed SiO₂ as support material, introducing the additive of polyethylene glycol (PEG) in the preparation medium and a deposition-precipitation method based on organic phase, we prepared the novel fumed SiO₂-supported VPO catalysts. The catalysts are the most selective in comparison to the various supported VPO counterparts for the partial oxidation of n-butane to maleic anhydride. At 653K the derived samples showed butane conversion of 33-40% and MA selectivity of 87-65mol%. The catalysts not only showed good performance at lower reaction temperatures, but also maintained higher MA selectivity at different loadings. In addition to the unique nature of fumed SiO₂, the highly uniform dispersion of VPO component and the involved VPO-support interaction, co-existence of predominant (VO)₂P₂O₇ phase and minor VOPO₄ may also be beneficial to the good performance on the unique fumed SiO ₂-based catalysts. In addition, broadening of the (200) diffraction line of (VO)₂P₂O₇ phase is an indication of structural disorder, one considered to be relevant to MA formation.

Original language	English
Pages (from-to)	223-228
Number of pages	6
Journal	Catalysis Today
Volume	93-95
DOIs	https://doi.org/10.1016/j.cattod.2004.06.127
Publication status	Published - 1 Sept 2004
Event	Selections from the Presentations of the 3rd Asia-Pacific Congress - Dalian, China Duration: 12 Oct 2003 → 12 Oct 2003

Scopus Subject Areas

Catalysis
Chemistry(all)

User-Defined Keywords

Fumed SiO
Maleic anhydride
n-Butane
Partial oxidation
Supported VPO

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10.1016/j.cattod.2004.06.127

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title = "The novel and highly selective fumed silica-supported VPO for partial oxidation of n-butane to maleic anhydride",

abstract = "By applying fumed SiO2 as support material, introducing the additive of polyethylene glycol (PEG) in the preparation medium and a deposition-precipitation method based on organic phase, we prepared the novel fumed SiO2-supported VPO catalysts. The catalysts are the most selective in comparison to the various supported VPO counterparts for the partial oxidation of n-butane to maleic anhydride. At 653K the derived samples showed butane conversion of 33-40% and MA selectivity of 87-65mol%. The catalysts not only showed good performance at lower reaction temperatures, but also maintained higher MA selectivity at different loadings. In addition to the unique nature of fumed SiO2, the highly uniform dispersion of VPO component and the involved VPO-support interaction, co-existence of predominant (VO)2P2O7 phase and minor VOPO4 may also be beneficial to the good performance on the unique fumed SiO 2-based catalysts. In addition, broadening of the (200) diffraction line of (VO)2P2O7 phase is an indication of structural disorder, one considered to be relevant to MA formation.",

keywords = "Fumed SiO, Maleic anhydride, n-Butane, Partial oxidation, Supported VPO",

author = "Xiao, {C. Y.} and X. Chen and Wang, {Z. Y.} and Ji, {W. J.} and Y. Chen and Au, {C. T.}",

note = "Funding Information: We acknowledge the financial supports from the Ministry of Science and Technology of China (G2000048009), the High-Tech Project of Jiangsu Province (BG2001038), and the Hong Kong Baptist University (FRG/02-03/I-17).; Selections from the Presentations of the 3rd Asia-Pacific Congress ; Conference date: 12-10-2003 Through 12-10-2003",

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T1 - The novel and highly selective fumed silica-supported VPO for partial oxidation of n-butane to maleic anhydride

AU - Xiao, C. Y.

AU - Chen, X.

AU - Wang, Z. Y.

AU - Ji, W. J.

AU - Chen, Y.

AU - Au, C. T.

N1 - Funding Information: We acknowledge the financial supports from the Ministry of Science and Technology of China (G2000048009), the High-Tech Project of Jiangsu Province (BG2001038), and the Hong Kong Baptist University (FRG/02-03/I-17).

PY - 2004/9/1

Y1 - 2004/9/1

N2 - By applying fumed SiO2 as support material, introducing the additive of polyethylene glycol (PEG) in the preparation medium and a deposition-precipitation method based on organic phase, we prepared the novel fumed SiO2-supported VPO catalysts. The catalysts are the most selective in comparison to the various supported VPO counterparts for the partial oxidation of n-butane to maleic anhydride. At 653K the derived samples showed butane conversion of 33-40% and MA selectivity of 87-65mol%. The catalysts not only showed good performance at lower reaction temperatures, but also maintained higher MA selectivity at different loadings. In addition to the unique nature of fumed SiO2, the highly uniform dispersion of VPO component and the involved VPO-support interaction, co-existence of predominant (VO)2P2O7 phase and minor VOPO4 may also be beneficial to the good performance on the unique fumed SiO 2-based catalysts. In addition, broadening of the (200) diffraction line of (VO)2P2O7 phase is an indication of structural disorder, one considered to be relevant to MA formation.

AB - By applying fumed SiO2 as support material, introducing the additive of polyethylene glycol (PEG) in the preparation medium and a deposition-precipitation method based on organic phase, we prepared the novel fumed SiO2-supported VPO catalysts. The catalysts are the most selective in comparison to the various supported VPO counterparts for the partial oxidation of n-butane to maleic anhydride. At 653K the derived samples showed butane conversion of 33-40% and MA selectivity of 87-65mol%. The catalysts not only showed good performance at lower reaction temperatures, but also maintained higher MA selectivity at different loadings. In addition to the unique nature of fumed SiO2, the highly uniform dispersion of VPO component and the involved VPO-support interaction, co-existence of predominant (VO)2P2O7 phase and minor VOPO4 may also be beneficial to the good performance on the unique fumed SiO 2-based catalysts. In addition, broadening of the (200) diffraction line of (VO)2P2O7 phase is an indication of structural disorder, one considered to be relevant to MA formation.

KW - Fumed SiO

KW - Maleic anhydride

KW - n-Butane

KW - Partial oxidation

KW - Supported VPO

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The novel and highly selective fumed silica-supported VPO for partial oxidation of n-butane to maleic anhydride

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