Efficient gamma-Fe2O3 catalyst for liquid phase air oxidation of p-hydroxybenzyl alcohol under mild conditions

TitleEfficient gamma-Fe2O3 catalyst for liquid phase air oxidation of p-hydroxybenzyl alcohol under mild conditions
Publication TypeJournal Article
Year of Publication2009
AuthorsGarade, AC, Bharadwaj, M, Bhagwat, SV, Athawale, AA, Rode, CV
JournalCatalysis Communications
Volume10
Issue5
Pagination485-489
Date PublishedJAN
ISSN1566-7367
KeywordsAir oxidation, gamma-Fe2O3, p-Hydroxybenzaldehyde, p-Hydroxybenzyl alcohol, scanning electron microscopy
Abstract

gamma-Fe2O3 (maghemite) particles were synthesized at 5 degrees C (LT, low temperature) and 95 degrees C (HT, high temperature) using a simple chemical protocol. The major reflection in XRD was observed to be of the gamma-Fe2O3 phase which was further supported by the XPS analysis. Fe3+ species were responsible for initiation of the oxidation of p-hydroxybenzyl alcohol. SEM revealed that the morphologies of the catalysts were different for samples prepared at two different temperatures. gamma-Fe2O3 (LT) showed the highest catalyst activity (84% conversion) for liquid phase air oxidation of p-hydroxybenzyl alcohol with 94% selectivity to the oxidation products at 370 K and ambient pressure conditions. (C) 2008 Elsevier B.V. All rights reserved.

DOI10.1016/j.catcom.2008.10.044
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.827
Divison category: 
Chemical Engineering & Process Development