Effect of shell thickness of Pd core-porous SiO2 shell catalysts on direct synthesis of H2O2 from H2 and O2

Myung gi Seo; Ho Joong Kim; Sang Soo Han; Kwan Young Lee

doi:10.1016/j.molcata.2016.11.021

Effect of shell thickness of Pd core-porous SiO₂ shell catalysts on direct synthesis of H₂O₂ from H₂ and O₂

Myung gi Seo, Ho Joong Kim, Sang Soo Han, Kwan Young Lee

Department of Chemical and Biological Engineering

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

13 Citations (Scopus)

Abstract

In our previous study, we applied Pd@SiO₂ core-shell catalysts to hydrogen peroxide synthesis and obtained a higher yield of hydrogen peroxide than that obtained with the use of general supported-catalysts (Pd/SiO₂). As an extension of the previous study on Pd@SiO₂ catalysts, the effects of the core-shell thickness on the hydrogen peroxide synthesis reaction were examined in this study. A shell below a certain thickness in the core-shell structure of the Pd nanocatalyst results in a decrease in the catalytic activity. Overall, a volcano curve is observed for the hydrogen peroxide production rate as a function of the shell thickness. Through N₂-adsorption and desorption, TEM, CO-chemisorption, and XRD analyses, we identify the causes for the improved direct hydrogen peroxide synthesis yields and later optimize the shell thickness for the efficient utilization of Pd.

Original language	English
Pages (from-to)	238-243
Number of pages	6
Journal	Journal of Molecular Catalysis A: Chemical
Volume	426
DOIs	https://doi.org/10.1016/j.molcata.2016.11.021
Publication status	Published - 2017 Jan 1

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) ( NRF-2016M3D1A1021143 ). This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MSIP) (2016, University-Institute cooperation program).

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

Core–shell structured catalyst
Direct hydrogen peroxide synthesis
Palladium catalyst
Palladium nanoparticle

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

Access to Document

10.1016/j.molcata.2016.11.021

Cite this

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title = "Effect of shell thickness of Pd core-porous SiO2 shell catalysts on direct synthesis of H2O2 from H2 and O2",

abstract = "In our previous study, we applied Pd@SiO2 core-shell catalysts to hydrogen peroxide synthesis and obtained a higher yield of hydrogen peroxide than that obtained with the use of general supported-catalysts (Pd/SiO2). As an extension of the previous study on Pd@SiO2 catalysts, the effects of the core-shell thickness on the hydrogen peroxide synthesis reaction were examined in this study. A shell below a certain thickness in the core-shell structure of the Pd nanocatalyst results in a decrease in the catalytic activity. Overall, a volcano curve is observed for the hydrogen peroxide production rate as a function of the shell thickness. Through N2-adsorption and desorption, TEM, CO-chemisorption, and XRD analyses, we identify the causes for the improved direct hydrogen peroxide synthesis yields and later optimize the shell thickness for the efficient utilization of Pd.",

keywords = "Core–shell structured catalyst, Direct hydrogen peroxide synthesis, Palladium catalyst, Palladium nanoparticle",

author = "Seo, {Myung gi} and Kim, {Ho Joong} and Han, {Sang Soo} and Lee, {Kwan Young}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) ( NRF-2016M3D1A1021143 ). This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MSIP) (2016, University-Institute cooperation program). Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

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T1 - Effect of shell thickness of Pd core-porous SiO2 shell catalysts on direct synthesis of H2O2 from H2 and O2

AU - Seo, Myung gi

AU - Kim, Ho Joong

AU - Han, Sang Soo

AU - Lee, Kwan Young

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIP) ( NRF-2016M3D1A1021143 ). This work was supported by the National Research Foundation of Korea Grant funded by the Korean Government (MSIP) (2016, University-Institute cooperation program). Publisher Copyright: © 2016 Elsevier B.V.

PY - 2017/1/1

Y1 - 2017/1/1

N2 - In our previous study, we applied Pd@SiO2 core-shell catalysts to hydrogen peroxide synthesis and obtained a higher yield of hydrogen peroxide than that obtained with the use of general supported-catalysts (Pd/SiO2). As an extension of the previous study on Pd@SiO2 catalysts, the effects of the core-shell thickness on the hydrogen peroxide synthesis reaction were examined in this study. A shell below a certain thickness in the core-shell structure of the Pd nanocatalyst results in a decrease in the catalytic activity. Overall, a volcano curve is observed for the hydrogen peroxide production rate as a function of the shell thickness. Through N2-adsorption and desorption, TEM, CO-chemisorption, and XRD analyses, we identify the causes for the improved direct hydrogen peroxide synthesis yields and later optimize the shell thickness for the efficient utilization of Pd.

AB - In our previous study, we applied Pd@SiO2 core-shell catalysts to hydrogen peroxide synthesis and obtained a higher yield of hydrogen peroxide than that obtained with the use of general supported-catalysts (Pd/SiO2). As an extension of the previous study on Pd@SiO2 catalysts, the effects of the core-shell thickness on the hydrogen peroxide synthesis reaction were examined in this study. A shell below a certain thickness in the core-shell structure of the Pd nanocatalyst results in a decrease in the catalytic activity. Overall, a volcano curve is observed for the hydrogen peroxide production rate as a function of the shell thickness. Through N2-adsorption and desorption, TEM, CO-chemisorption, and XRD analyses, we identify the causes for the improved direct hydrogen peroxide synthesis yields and later optimize the shell thickness for the efficient utilization of Pd.

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KW - Palladium nanoparticle

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