Vanadium oxide supported gamma-alumina with bimodal porous structure for intra-particle diffusion enhancement in styrene oxidation reaction | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

4708057

Reference Type

Journal Article

Title

Vanadium oxide supported gamma-alumina with bimodal porous structure for intra-particle diffusion enhancement in styrene oxidation reaction

Author(s)

Ahmad, AL; Leo, CP; Shukor, SRAbd

Year

2009

Is Peer Reviewed?

Yes

Journal

Journal of Porous Materials
ISSN: 1380-2224

Volume

Issue

Page Numbers

33-40

DOI

10.1007/s10934-007-9165-8

Web of Science Id

WOS:000262435200006

Abstract

Porous gamma-alumina with well arranged secondary mesopores has been contrived using nanosized templating units. The pore size of templated mesopores is precisely controlled as the pore shrinkage is insignificant. The primary pore diameter is ca. 4 nm and the secondary pore diameter is ca. 50 nm. The porous material was characterized using N(2) adsorption/desorption, TEM, XRD and FT-IR. gamma-alumina with bimodal pore size distribution shows improved intra-particle diffusion compared to gamma-alumina with unimodal pore size distribution in a simple dye adsorption test. gamma-alumina with different porous structures were then impregnated with vanadium oxide for catalytic effect comparison. It was perceived that secondary pores improve the styrene oxidation rate after the conversion of styrene reaches 30%.

Keywords

gamma-Alumina; Vanadium oxide; Template; Bimodal; Oxidation