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Oxidation of p-chlorotoluene to p-chlorobenzaldehyde over manganese-based octahedral molecular sieves of different morphologies

Paper ID Volume ID Publish Year Pages File Format Full-Text
50426 46794 2014 5 PDF Available
Title
Oxidation of p-chlorotoluene to p-chlorobenzaldehyde over manganese-based octahedral molecular sieves of different morphologies
Abstract

•MnO2 (OMS-2) of rod-, fibrous-, dendritic-, and nest-like morphologies were synthesized.•Nest-like OMS-2 is highly active for liquid-phase partial oxidation of p-chlorotoluene.•Catalytic activity is related to high concentration and mobility of oxygen species.

Manganese-based octahedral molecular sieves (OMS-2) of rod-like, fibrous-like, dendritic-like, and nest-like morphologies were synthesized by solid-state reaction, reflux, and hydrothermal methods, respectively. The materials were characterized and tested for liquid-phase oxidation of p-chlorotoluene to p-chlorobenzaldehyde. Over nest-like OMS-2, p-chlorotoluene conversion was significantly higher than that of the others. The differences in catalytic performance are attributed to the effects of composition and structure. The high activity of nest-like is due to the high concentration of oxygen adspecies and good mobility of oxygen species, whereas the poor performance of dendritic-like is due to the presence of chromium.

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Keywords
Manganese oxide; OMS-2; p-Chlorotoluene; p-Chlorobenzaldehyde; Catalytic oxidation; Lattice oxygen
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Oxidation of p-chlorotoluene to p-chlorobenzaldehyde over manganese-based octahedral molecular sieves of different morphologies
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 43, 5 January 2014, Pages 126–130
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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