Efficient and reusable Co/nitrogen doped hollow carbon sphere catalysts for the aerobic oxidation of styrene

Isaac Nongwe; Vilas Ravat; Reinout Meijboom; Neil J. Coville

doi:10.1016/j.apcata.2013.06.014

Efficient and reusable Co/nitrogen doped hollow carbon sphere catalysts for the aerobic oxidation of styrene

Isaac Nongwe
, Vilas Ravat
, Reinout Meijboom
, Neil J. Coville

Chemical Sciences

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

38 Citations (Scopus)

Abstract

Monodispersed hollow carbon spheres (HCSs) were made by decomposition of gaseous CH₃CN over silica Stöber spheres in a CVD reaction. The nitrogen doped HCSs (N = 8.7%) were used as support for well dispersed Co ₃O₄ nanoparticles (7-8 nm; 1% and 2% Co). The Co/N-HCS samples were calcined at various temperatures. The materials calcined at 300 C for 3 h were found to oxidize styrene to styrene oxide (styrene epoxidation) using dry air as oxidant (120 C/DMF) with 99% styrene conversion and 85% selectivity to styrene oxide; they could also be reused in repeat catalytic reactions.

Original language	English
Pages (from-to)	1-8
Number of pages	8
Journal	Applied Catalysis A: General
Volume	466
DOIs	https://doi.org/10.1016/j.apcata.2013.06.014
Publication status	Published - 2013

Keywords

Cobalt oxide
Hollow carbon sphere
Nanoparticles
Nitrogen doped carbons
Styrene oxidation

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

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10.1016/j.apcata.2013.06.014

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title = "Efficient and reusable Co/nitrogen doped hollow carbon sphere catalysts for the aerobic oxidation of styrene",

abstract = "Monodispersed hollow carbon spheres (HCSs) were made by decomposition of gaseous CH3CN over silica St{\"o}ber spheres in a CVD reaction. The nitrogen doped HCSs (N = 8.7\%) were used as support for well dispersed Co 3O4 nanoparticles (7-8 nm; 1\% and 2\% Co). The Co/N-HCS samples were calcined at various temperatures. The materials calcined at 300 C for 3 h were found to oxidize styrene to styrene oxide (styrene epoxidation) using dry air as oxidant (120 C/DMF) with 99\% styrene conversion and 85\% selectivity to styrene oxide; they could also be reused in repeat catalytic reactions.",

keywords = "Cobalt oxide, Hollow carbon sphere, Nanoparticles, Nitrogen doped carbons, Styrene oxidation",

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T1 - Efficient and reusable Co/nitrogen doped hollow carbon sphere catalysts for the aerobic oxidation of styrene

AU - Nongwe, Isaac

AU - Ravat, Vilas

AU - Meijboom, Reinout

AU - Coville, Neil J.

PY - 2013

Y1 - 2013

N2 - Monodispersed hollow carbon spheres (HCSs) were made by decomposition of gaseous CH3CN over silica Stöber spheres in a CVD reaction. The nitrogen doped HCSs (N = 8.7%) were used as support for well dispersed Co 3O4 nanoparticles (7-8 nm; 1% and 2% Co). The Co/N-HCS samples were calcined at various temperatures. The materials calcined at 300 C for 3 h were found to oxidize styrene to styrene oxide (styrene epoxidation) using dry air as oxidant (120 C/DMF) with 99% styrene conversion and 85% selectivity to styrene oxide; they could also be reused in repeat catalytic reactions.

AB - Monodispersed hollow carbon spheres (HCSs) were made by decomposition of gaseous CH3CN over silica Stöber spheres in a CVD reaction. The nitrogen doped HCSs (N = 8.7%) were used as support for well dispersed Co 3O4 nanoparticles (7-8 nm; 1% and 2% Co). The Co/N-HCS samples were calcined at various temperatures. The materials calcined at 300 C for 3 h were found to oxidize styrene to styrene oxide (styrene epoxidation) using dry air as oxidant (120 C/DMF) with 99% styrene conversion and 85% selectivity to styrene oxide; they could also be reused in repeat catalytic reactions.

KW - Cobalt oxide

KW - Hollow carbon sphere

KW - Nanoparticles

KW - Nitrogen doped carbons

KW - Styrene oxidation

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DO - 10.1016/j.apcata.2013.06.014

M3 - Article

AN - SCOPUS:84880337547

SN - 0926-860X

VL - 466

SP - 1

EP - 8

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

ER -

Efficient and reusable Co/nitrogen doped hollow carbon sphere catalysts for the aerobic oxidation of styrene

Abstract

Keywords

ASJC Scopus subject areas

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