Direct synthesis of hydrogen peroxide from hydrogen and oxygen over a Pd core-silica shell catalyst

Hwajung Lee; Seongmin Kim; Dae Won Lee; Kwan Young Lee

doi:10.1016/j.catcom.2011.03.001

Direct synthesis of hydrogen peroxide from hydrogen and oxygen over a Pd core-silica shell catalyst

Hwajung Lee, Seongmin Kim, Dae Won Lee, Kwan Young Lee

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

35 Citations (Scopus)

Abstract

Pd core-silica shell particles (Pd@SiO₂) were prepared by encapsulating Pd colloids with a silica shell through the Stöber method. The palladium core particles were well dispersed (Dispersion = 43%) and had uniform size (4 nm) and shape inside the porous silica shell. Pd@SiO₂ showed good catalytic activity (554 mmol H₂O₂/g Pd•h) for the direct synthesis of H₂O₂, which was better than those of impregnated Pd catalysts (Pd/SiO₂ and Pd/Al ₂O₃). It is expected that the stabilization of less coordinated Pd crystals in a highly dispersed state by core-shell formation is effective for the improvement of H₂O₂ production.

Original language	English
Pages (from-to)	968-971
Number of pages	4
Journal	Catalysis Communications
Volume	12
Issue number	11
DOIs	https://doi.org/10.1016/j.catcom.2011.03.001
Publication status	Published - 2011 Jun 10

Bibliographical note

Funding Information:
Dr. Dae-Won Lee was supported by a Korea University Grant .

Funding Information:
The authors appreciate the financial support from OCI Company Ltd . for this research.

Keywords

Colloid nanoparticle
Core-shell
Direct synthesis
Hydroen peroxide
Palladium

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

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10.1016/j.catcom.2011.03.001

Cite this

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title = "Direct synthesis of hydrogen peroxide from hydrogen and oxygen over a Pd core-silica shell catalyst",

abstract = "Pd core-silica shell particles (Pd@SiO2) were prepared by encapsulating Pd colloids with a silica shell through the St{\"o}ber method. The palladium core particles were well dispersed (Dispersion = 43%) and had uniform size (4 nm) and shape inside the porous silica shell. Pd@SiO2 showed good catalytic activity (554 mmol H2O2/g Pd•h) for the direct synthesis of H2O2, which was better than those of impregnated Pd catalysts (Pd/SiO2 and Pd/Al 2O3). It is expected that the stabilization of less coordinated Pd crystals in a highly dispersed state by core-shell formation is effective for the improvement of H2O2 production.",

keywords = "Colloid nanoparticle, Core-shell, Direct synthesis, Hydroen peroxide, Palladium",

author = "Hwajung Lee and Seongmin Kim and Lee, {Dae Won} and Lee, {Kwan Young}",

note = "Funding Information: Dr. Dae-Won Lee was supported by a Korea University Grant . Funding Information: The authors appreciate the financial support from OCI Company Ltd . for this research. ",

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doi = "10.1016/j.catcom.2011.03.001",

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journal = "Catalysis Communications",

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T1 - Direct synthesis of hydrogen peroxide from hydrogen and oxygen over a Pd core-silica shell catalyst

AU - Lee, Hwajung

AU - Kim, Seongmin

AU - Lee, Dae Won

AU - Lee, Kwan Young

N1 - Funding Information: Dr. Dae-Won Lee was supported by a Korea University Grant . Funding Information: The authors appreciate the financial support from OCI Company Ltd . for this research.

PY - 2011/6/10

Y1 - 2011/6/10

N2 - Pd core-silica shell particles (Pd@SiO2) were prepared by encapsulating Pd colloids with a silica shell through the Stöber method. The palladium core particles were well dispersed (Dispersion = 43%) and had uniform size (4 nm) and shape inside the porous silica shell. Pd@SiO2 showed good catalytic activity (554 mmol H2O2/g Pd•h) for the direct synthesis of H2O2, which was better than those of impregnated Pd catalysts (Pd/SiO2 and Pd/Al 2O3). It is expected that the stabilization of less coordinated Pd crystals in a highly dispersed state by core-shell formation is effective for the improvement of H2O2 production.

AB - Pd core-silica shell particles (Pd@SiO2) were prepared by encapsulating Pd colloids with a silica shell through the Stöber method. The palladium core particles were well dispersed (Dispersion = 43%) and had uniform size (4 nm) and shape inside the porous silica shell. Pd@SiO2 showed good catalytic activity (554 mmol H2O2/g Pd•h) for the direct synthesis of H2O2, which was better than those of impregnated Pd catalysts (Pd/SiO2 and Pd/Al 2O3). It is expected that the stabilization of less coordinated Pd crystals in a highly dispersed state by core-shell formation is effective for the improvement of H2O2 production.

KW - Colloid nanoparticle

KW - Core-shell

KW - Direct synthesis

KW - Hydroen peroxide

KW - Palladium

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DO - 10.1016/j.catcom.2011.03.001

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SN - 1566-7367

VL - 12

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JO - Catalysis Communications

JF - Catalysis Communications

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ER -

Direct synthesis of hydrogen peroxide from hydrogen and oxygen over a Pd core-silica shell catalyst

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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