Support-enhanced selective aerobic alcohol oxidation over Pd/mesoporous silicas

Christopher M.A. Parlett; Duncan W. Bruce; Nicole S. Hondow; Adam F. Lee; Karen Wilson

doi:10.1021/cs200145n

Support-enhanced selective aerobic alcohol oxidation over Pd/mesoporous silicas

Christopher M.A. Parlett, Duncan W. Bruce, Nicole S. Hondow, Adam F. Lee, Karen Wilson

Research output: Contribution to journal › Article › peer-review

Abstract

The influence of silica mesostructure upon the Pd-catalyzed selective oxidation of allylic alcohols has been investigated for amorphous and surfactant-templated SBA-15, SBA-16, and KIT-6 silicas. Significant rate enhancements can be achieved via mesopore introduction, most notably through the use of interconnected porous silica frameworks, reflecting both improved mass transport and increased palladium dispersion; catalytic activity decreases in the order Pd/KIT-6 ≈ Pd/SBA-16 > Pd/SBA-15 > Pd/SiO₂. Evidence is presented that highly dispersed palladium oxide nanoparticles, not zerovalent palladium, are the catalytically active species. © 2011 American Chemical Society.

Original language	English
Pages (from-to)	636-640
Number of pages	5
Journal	ACS Catalysis
Volume	1
Issue number	6
Early online date	3 May 2011
DOIs	https://doi.org/10.1021/cs200145n
Publication status	Published - 3 Jun 2011

Keywords

palladium
active site
silica
mesoporous
selective oxidation
alcohol

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10.1021/cs200145n

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title = "Support-enhanced selective aerobic alcohol oxidation over Pd/mesoporous silicas",

abstract = "The influence of silica mesostructure upon the Pd-catalyzed selective oxidation of allylic alcohols has been investigated for amorphous and surfactant-templated SBA-15, SBA-16, and KIT-6 silicas. Significant rate enhancements can be achieved via mesopore introduction, most notably through the use of interconnected porous silica frameworks, reflecting both improved mass transport and increased palladium dispersion; catalytic activity decreases in the order Pd/KIT-6 ≈ Pd/SBA-16 > Pd/SBA-15 > Pd/SiO2. Evidence is presented that highly dispersed palladium oxide nanoparticles, not zerovalent palladium, are the catalytically active species. {\textcopyright} 2011 American Chemical Society.",

keywords = "palladium, active site, silica, mesoporous, selective oxidation, alcohol",

author = "Parlett, {Christopher M.A.} and Bruce, {Duncan W.} and Hondow, {Nicole S.} and Lee, {Adam F.} and Karen Wilson",

year = "2011",

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doi = "10.1021/cs200145n",

language = "English",

volume = "1",

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TY - JOUR

T1 - Support-enhanced selective aerobic alcohol oxidation over Pd/mesoporous silicas

AU - Parlett, Christopher M.A.

AU - Bruce, Duncan W.

AU - Hondow, Nicole S.

AU - Lee, Adam F.

AU - Wilson, Karen

PY - 2011/6/3

Y1 - 2011/6/3

N2 - The influence of silica mesostructure upon the Pd-catalyzed selective oxidation of allylic alcohols has been investigated for amorphous and surfactant-templated SBA-15, SBA-16, and KIT-6 silicas. Significant rate enhancements can be achieved via mesopore introduction, most notably through the use of interconnected porous silica frameworks, reflecting both improved mass transport and increased palladium dispersion; catalytic activity decreases in the order Pd/KIT-6 ≈ Pd/SBA-16 > Pd/SBA-15 > Pd/SiO2. Evidence is presented that highly dispersed palladium oxide nanoparticles, not zerovalent palladium, are the catalytically active species. © 2011 American Chemical Society.

AB - The influence of silica mesostructure upon the Pd-catalyzed selective oxidation of allylic alcohols has been investigated for amorphous and surfactant-templated SBA-15, SBA-16, and KIT-6 silicas. Significant rate enhancements can be achieved via mesopore introduction, most notably through the use of interconnected porous silica frameworks, reflecting both improved mass transport and increased palladium dispersion; catalytic activity decreases in the order Pd/KIT-6 ≈ Pd/SBA-16 > Pd/SBA-15 > Pd/SiO2. Evidence is presented that highly dispersed palladium oxide nanoparticles, not zerovalent palladium, are the catalytically active species. © 2011 American Chemical Society.

KW - palladium

KW - active site

KW - silica

KW - mesoporous

KW - selective oxidation

KW - alcohol

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UR - http://pubs.acs.org/doi/abs/10.1021/cs200145n

U2 - 10.1021/cs200145n

DO - 10.1021/cs200145n

M3 - Article

SN - 2155-5435

VL - 1

SP - 636

EP - 640

JO - ACS Catalysis

JF - ACS Catalysis

IS - 6

ER -

Support-enhanced selective aerobic alcohol oxidation over Pd/mesoporous silicas

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Keywords

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