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Preparation of vanadium phosphate catalyst precursors for the selective oxidation of butane using α,ω-alkanediols

Paper ID Volume ID Publish Year Pages File Format Full-Text
55413 47052 2012 6 PDF Available
Title
Preparation of vanadium phosphate catalyst precursors for the selective oxidation of butane using α,ω-alkanediols
Abstract

Vanadium phosphate catalyst precursors were prepared from V2O5 and H3PO4 or VOPO4·2H2O using α,ω-alkanediols (1,4-butanediol, 1,5-pentanediol and 1,6-hexanediol) as both the reducing agent and the solvent. A series of layered VOHPO4·HO(CH2)nOH (n = 4–6) materials intercalated with α,ω-alkanediols were obtained. The performance for butane oxidation of the final catalysts formed via the in situ transformation of the VOHPO4·HO(CH2)nOH precursors under reaction conditions is described. The final catalysts derived from the alkanediol intercalated materials were found to exhibit relatively low selectivities to maleic anhydride and comprised of VV (VOPO4) phases with an amorphous VIV phase. However, when a crystalline (VIVO)2P2O7 phase is present, with small amounts of VV phases, as with materials prepared with 1,4-butanediol, the specific and intrinsic catalytic activity are higher.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (204 K)Download as PowerPoint slideHighlights► Vanadium phosphate catalyst precursors were prepared using α,ω-alkanediols. ► VOHPO4·HO(CH2)nOH (n = 4–6) materials intercalated with α,ω-alkanediols were obtained. ► Catalysts containing crystalline (VO)2P2O7 with small amounts of VV had high activity.

Keywords
Vanadium pyrophosphate; α,ω-Alkanediols; Butane; Selective oxidation; Intercalation
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Preparation of vanadium phosphate catalyst precursors for the selective oxidation of butane using α,ω-alkanediols
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 183, Issue 1, 20 March 2012, Pages 52–57
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
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