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.

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

Keywords

active site
alcohol
mesoporous
Palladium
selective oxidation
silica

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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.",

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

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

year = "2011",

month = jun,

day = "3",

doi = "10.1021/cs200145n",

language = "English",

volume = "1",

pages = "636--640",

journal = "ACS Catalysis",

issn = "2155-5435",

publisher = "American Chemical Society",

number = "6",

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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.

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.

KW - active site

KW - alcohol

KW - mesoporous

KW - Palladium

KW - selective oxidation

KW - silica

UR - https://www.scopus.com/pages/publications/79958239882

U2 - 10.1021/cs200145n

DO - 10.1021/cs200145n

M3 - Article

AN - SCOPUS:79958239882

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

Abstract

Keywords

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