Water gas shift reaction on the Mn-modified ordered mesoporous Co3O4

Chang Il Ahn; Dae Woon Jeong; Jae Min Cho; Hyun Suk Na; Won Jun Jang; Hyun Seog Roh; Joon Hwan Choi; Soong Ho Um; Jong Wook Bae

doi:10.1016/j.micromeso.2015.09.036

Water gas shift reaction on the Mn-modified ordered mesoporous Co₃O₄

Chang Il Ahn, Dae Woon Jeong, Jae Min Cho, Hyun Suk Na, Won Jun Jang, Hyun Seog Roh, Joon Hwan Choi, Soong Ho Um, Jong Wook Bae

Division of Environmental Engineering

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

29 Citations (Scopus)

Abstract

The novel Mn-modified ordered mesoporous Co₃O₄ catalysts were investigated for water gas shift reaction (WGSR), which was synthesized through a nano-casting method using a hard template of KIT-6. An incipient wetness impregnation of Mn precursor with different concentrations was applied for preparing Mn-modified mesoporous Co₃O₄. On 15 wt%Mn impregnated mesoporous Co₃O₄ (denoted as Mn(15)/meso-Co₃O₄), WGSR activity was found to be higher among the tested catalysts due to a higher structural stability of the Co₃O₄ mesopores with a larger surface area. The Mn(15)/meso-Co₃O₄ also showed stable ordered mesopore structures with an exposed larger number of active metallic cobalt sites on the surfaces even after WGSR. The structural stability was mainly attributed to the strong and stable interactions between cobalt oxides and manganese oxides. With an optimum amount of Mn promoter, Mn plays an important role as a structural stabilizer of the mesoporous Co₃O₄ as well as an electron modifier by enhancing redox cycle properties of cobalt species and fast mass transport in mesopores.

Original language	English
Article number	7320
Pages (from-to)	204-211
Number of pages	8
Journal	Microporous and Mesoporous Materials
Volume	221
DOIs	https://doi.org/10.1016/j.micromeso.2015.09.036
Publication status	Published - 2015 Oct 3

Bibliographical note

Funding Information:
The authors would like to acknowledge the financial support from the Korea Institute of Materials Science (project number of PNK4310 ) and from the National Research Foundation of Korea (NRF) grant funded by the Korea government ( NRF-2014R1A1A2A16055557 ). This work was financially supported by a Grant from the Industrial Source Technology Development Programs ( 2013-10042712 ) of the Ministry of Knowledge Economy (MKE) of Korea. This work was supported by the National Research Council of Science and Technology (NST) through Degree and Research Center (DRC) Program (2014).

Publisher Copyright:
© 2015 Elsevier Inc.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials

Access to Document

10.1016/j.micromeso.2015.09.036

Cite this

@article{defcd224cb2144d4816f809fc7404dd5,

title = "Water gas shift reaction on the Mn-modified ordered mesoporous Co3O4",

abstract = "The novel Mn-modified ordered mesoporous Co3O4 catalysts were investigated for water gas shift reaction (WGSR), which was synthesized through a nano-casting method using a hard template of KIT-6. An incipient wetness impregnation of Mn precursor with different concentrations was applied for preparing Mn-modified mesoporous Co3O4. On 15 wt%Mn impregnated mesoporous Co3O4 (denoted as Mn(15)/meso-Co3O4), WGSR activity was found to be higher among the tested catalysts due to a higher structural stability of the Co3O4 mesopores with a larger surface area. The Mn(15)/meso-Co3O4 also showed stable ordered mesopore structures with an exposed larger number of active metallic cobalt sites on the surfaces even after WGSR. The structural stability was mainly attributed to the strong and stable interactions between cobalt oxides and manganese oxides. With an optimum amount of Mn promoter, Mn plays an important role as a structural stabilizer of the mesoporous Co3O4 as well as an electron modifier by enhancing redox cycle properties of cobalt species and fast mass transport in mesopores.",

author = "Ahn, {Chang Il} and Jeong, {Dae Woon} and Cho, {Jae Min} and Na, {Hyun Suk} and Jang, {Won Jun} and Roh, {Hyun Seog} and Choi, {Joon Hwan} and Um, {Soong Ho} and Bae, {Jong Wook}",

note = "Funding Information: The authors would like to acknowledge the financial support from the Korea Institute of Materials Science (project number of PNK4310 ) and from the National Research Foundation of Korea (NRF) grant funded by the Korea government ( NRF-2014R1A1A2A16055557 ). This work was financially supported by a Grant from the Industrial Source Technology Development Programs ( 2013-10042712 ) of the Ministry of Knowledge Economy (MKE) of Korea. This work was supported by the National Research Council of Science and Technology (NST) through Degree and Research Center (DRC) Program (2014). Publisher Copyright: {\textcopyright} 2015 Elsevier Inc.",

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doi = "10.1016/j.micromeso.2015.09.036",

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AU - Ahn, Chang Il

AU - Jeong, Dae Woon

AU - Cho, Jae Min

AU - Na, Hyun Suk

AU - Jang, Won Jun

AU - Roh, Hyun Seog

AU - Choi, Joon Hwan

AU - Um, Soong Ho

AU - Bae, Jong Wook

N1 - Funding Information: The authors would like to acknowledge the financial support from the Korea Institute of Materials Science (project number of PNK4310 ) and from the National Research Foundation of Korea (NRF) grant funded by the Korea government ( NRF-2014R1A1A2A16055557 ). This work was financially supported by a Grant from the Industrial Source Technology Development Programs ( 2013-10042712 ) of the Ministry of Knowledge Economy (MKE) of Korea. This work was supported by the National Research Council of Science and Technology (NST) through Degree and Research Center (DRC) Program (2014). Publisher Copyright: © 2015 Elsevier Inc.

PY - 2015/10/3

Y1 - 2015/10/3

N2 - The novel Mn-modified ordered mesoporous Co3O4 catalysts were investigated for water gas shift reaction (WGSR), which was synthesized through a nano-casting method using a hard template of KIT-6. An incipient wetness impregnation of Mn precursor with different concentrations was applied for preparing Mn-modified mesoporous Co3O4. On 15 wt%Mn impregnated mesoporous Co3O4 (denoted as Mn(15)/meso-Co3O4), WGSR activity was found to be higher among the tested catalysts due to a higher structural stability of the Co3O4 mesopores with a larger surface area. The Mn(15)/meso-Co3O4 also showed stable ordered mesopore structures with an exposed larger number of active metallic cobalt sites on the surfaces even after WGSR. The structural stability was mainly attributed to the strong and stable interactions between cobalt oxides and manganese oxides. With an optimum amount of Mn promoter, Mn plays an important role as a structural stabilizer of the mesoporous Co3O4 as well as an electron modifier by enhancing redox cycle properties of cobalt species and fast mass transport in mesopores.

AB - The novel Mn-modified ordered mesoporous Co3O4 catalysts were investigated for water gas shift reaction (WGSR), which was synthesized through a nano-casting method using a hard template of KIT-6. An incipient wetness impregnation of Mn precursor with different concentrations was applied for preparing Mn-modified mesoporous Co3O4. On 15 wt%Mn impregnated mesoporous Co3O4 (denoted as Mn(15)/meso-Co3O4), WGSR activity was found to be higher among the tested catalysts due to a higher structural stability of the Co3O4 mesopores with a larger surface area. The Mn(15)/meso-Co3O4 also showed stable ordered mesopore structures with an exposed larger number of active metallic cobalt sites on the surfaces even after WGSR. The structural stability was mainly attributed to the strong and stable interactions between cobalt oxides and manganese oxides. With an optimum amount of Mn promoter, Mn plays an important role as a structural stabilizer of the mesoporous Co3O4 as well as an electron modifier by enhancing redox cycle properties of cobalt species and fast mass transport in mesopores.

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