Oxidation of o-xylene over vanadium-porous titania glass catalysts

C Y HONG, R P COONEY, Russell Francis Howe

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Porous titania glass (PTG) has been loaded with vanadia by several different methods. Nitrogen adsorption-desorption isotherms and X-ray powder diffraction measurements indicate that impregnation methods produce oxovanadium species within the mesopores of the glass. The vanadia-PTG catalysts exhibit similar levels of selectivity and conversion for the oxidation of o-xylene to phthalic anhydride as conventional anatase or rutile supported catalysts, but at significantly lower temperatures. The activity for phthalic anhydride production increases with vanadium loading; the best performance of 50% selectivity to phthalic anhydride at 100% o-xylene conversion was achieved at 280-degrees-C with a catalyst containing 5.6% V (w/w).

Original languageEnglish
Pages (from-to)237-247
Number of pages11
JournalApplied Catalysis A: General
Volume75
Issue number2
DOIs
Publication statusPublished - 15 Aug 1991

Keywords

  • catalyst characterization (adsorption, XRD)
  • catalyst preparation (wet impregnantion)
  • phthalic anhydride
  • titania glass
  • vanadia titania
  • ortho-xylene oxidation
  • phtalic-anhydride
  • V2O5-TIO2 catalysts
  • TIO2 catalysts
  • oxide system
  • active phase
  • monolayer
  • temperature
  • pentoxide
  • evolution
  • kinetics

Cite this

Oxidation of o-xylene over vanadium-porous titania glass catalysts. / HONG, C Y ; COONEY, R P ; Howe, Russell Francis.

In: Applied Catalysis A: General, Vol. 75, No. 2, 15.08.1991, p. 237-247.

Research output: Contribution to journalArticle

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AU - COONEY, R P

AU - Howe, Russell Francis

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Y1 - 1991/8/15

N2 - Porous titania glass (PTG) has been loaded with vanadia by several different methods. Nitrogen adsorption-desorption isotherms and X-ray powder diffraction measurements indicate that impregnation methods produce oxovanadium species within the mesopores of the glass. The vanadia-PTG catalysts exhibit similar levels of selectivity and conversion for the oxidation of o-xylene to phthalic anhydride as conventional anatase or rutile supported catalysts, but at significantly lower temperatures. The activity for phthalic anhydride production increases with vanadium loading; the best performance of 50% selectivity to phthalic anhydride at 100% o-xylene conversion was achieved at 280-degrees-C with a catalyst containing 5.6% V (w/w).

AB - Porous titania glass (PTG) has been loaded with vanadia by several different methods. Nitrogen adsorption-desorption isotherms and X-ray powder diffraction measurements indicate that impregnation methods produce oxovanadium species within the mesopores of the glass. The vanadia-PTG catalysts exhibit similar levels of selectivity and conversion for the oxidation of o-xylene to phthalic anhydride as conventional anatase or rutile supported catalysts, but at significantly lower temperatures. The activity for phthalic anhydride production increases with vanadium loading; the best performance of 50% selectivity to phthalic anhydride at 100% o-xylene conversion was achieved at 280-degrees-C with a catalyst containing 5.6% V (w/w).

KW - catalyst characterization (adsorption, XRD)

KW - catalyst preparation (wet impregnantion)

KW - phthalic anhydride

KW - titania glass

KW - vanadia titania

KW - ortho-xylene oxidation

KW - phtalic-anhydride

KW - V2O5-TIO2 catalysts

KW - TIO2 catalysts

KW - oxide system

KW - active phase

KW - monolayer

KW - temperature

KW - pentoxide

KW - evolution

KW - kinetics

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DO - 10.1016/S0166-9834(00)83134-6 |

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JO - Applied Catalysis A: General

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