Cobalt-acetato complexes immobilised on PYPA-organomodified silica: a case study of different ways of immobilisation

T  Pruss; D J  Macquarrie; J H  Clark

doi:10.1016/j.molcata.2003.10.014

Cobalt-acetato complexes immobilised on PYPA-organomodified silica: a case study of different ways of immobilisation

T Pruss, D J Macquarrie, J H Clark

Chemistry

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

Abstract

In this paper, we compare the properties and activities of immobilised forms of in situ formed cobalt-acetato complexes of pyridin-4-ylmethyl-(3-triethoxysilanyl-propyl)-amine (PYPA) on organomodified hexagonal mesoporous silica (HMS) prepared via different routes, namely sol-gel synthesis, post-modification of sol-gel AMP-HMS, and grafting. All materials are able to act as host for cobalt-acetato complexes to different extents, and are able to catalyse the aerial oxidation of styrene. The support materials and catalysts were characterised by DRIFT, X-ray photoelectron spectroscopy (XPS), N-2 adsorption and elemental analysis, and compared with their homogeneous counterpart and a material obtained by grafting of a complex formed prior to immobilisation on the silica surface. (C) 2003 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	209-217
Number of pages	9
Journal	Journal of Molecular Catalysis A: Chemical
Volume	211
Issue number	1-2
DOIs	https://doi.org/10.1016/j.molcata.2003.10.014
Publication status	Published - 15 Mar 2004

Keywords

supported catalysts
cobalt
oxidation
silica
MICELLE-TEMPLATED SILICA
SUPPORTED IMINES
BASE CATALYSTS
OXIDATION
ACIDS
HMS

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10.1016/j.molcata.2003.10.014

Cite this

@article{14d4722bddd2489cb413c9b9defb40df,

title = "Cobalt-acetato complexes immobilised on PYPA-organomodified silica: a case study of different ways of immobilisation",

abstract = "In this paper, we compare the properties and activities of immobilised forms of in situ formed cobalt-acetato complexes of pyridin-4-ylmethyl-(3-triethoxysilanyl-propyl)-amine (PYPA) on organomodified hexagonal mesoporous silica (HMS) prepared via different routes, namely sol-gel synthesis, post-modification of sol-gel AMP-HMS, and grafting. All materials are able to act as host for cobalt-acetato complexes to different extents, and are able to catalyse the aerial oxidation of styrene. The support materials and catalysts were characterised by DRIFT, X-ray photoelectron spectroscopy (XPS), N-2 adsorption and elemental analysis, and compared with their homogeneous counterpart and a material obtained by grafting of a complex formed prior to immobilisation on the silica surface. (C) 2003 Elsevier B.V. All rights reserved.",

keywords = "supported catalysts, cobalt, oxidation, silica, MICELLE-TEMPLATED SILICA, SUPPORTED IMINES, BASE CATALYSTS, OXIDATION, ACIDS, HMS",

author = "T Pruss and Macquarrie, {D J} and Clark, {J H}",

year = "2004",

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T1 - Cobalt-acetato complexes immobilised on PYPA-organomodified silica: a case study of different ways of immobilisation

AU - Pruss, T

AU - Macquarrie, D J

AU - Clark, J H

PY - 2004/3/15

Y1 - 2004/3/15

N2 - In this paper, we compare the properties and activities of immobilised forms of in situ formed cobalt-acetato complexes of pyridin-4-ylmethyl-(3-triethoxysilanyl-propyl)-amine (PYPA) on organomodified hexagonal mesoporous silica (HMS) prepared via different routes, namely sol-gel synthesis, post-modification of sol-gel AMP-HMS, and grafting. All materials are able to act as host for cobalt-acetato complexes to different extents, and are able to catalyse the aerial oxidation of styrene. The support materials and catalysts were characterised by DRIFT, X-ray photoelectron spectroscopy (XPS), N-2 adsorption and elemental analysis, and compared with their homogeneous counterpart and a material obtained by grafting of a complex formed prior to immobilisation on the silica surface. (C) 2003 Elsevier B.V. All rights reserved.

AB - In this paper, we compare the properties and activities of immobilised forms of in situ formed cobalt-acetato complexes of pyridin-4-ylmethyl-(3-triethoxysilanyl-propyl)-amine (PYPA) on organomodified hexagonal mesoporous silica (HMS) prepared via different routes, namely sol-gel synthesis, post-modification of sol-gel AMP-HMS, and grafting. All materials are able to act as host for cobalt-acetato complexes to different extents, and are able to catalyse the aerial oxidation of styrene. The support materials and catalysts were characterised by DRIFT, X-ray photoelectron spectroscopy (XPS), N-2 adsorption and elemental analysis, and compared with their homogeneous counterpart and a material obtained by grafting of a complex formed prior to immobilisation on the silica surface. (C) 2003 Elsevier B.V. All rights reserved.

KW - supported catalysts

KW - cobalt

KW - oxidation

KW - silica

KW - MICELLE-TEMPLATED SILICA

KW - SUPPORTED IMINES

KW - BASE CATALYSTS

KW - OXIDATION

KW - ACIDS

KW - HMS

U2 - 10.1016/j.molcata.2003.10.014

DO - 10.1016/j.molcata.2003.10.014

M3 - Article

SN - 1381-1169

VL - 211

SP - 209

EP - 217

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

IS - 1-2

ER -