Preparation of H3PMo12O40 catalyst immobilized on surface modified mesostructured cellular foam (SM-MCF) silica and its application to the ethanol conversion reaction

Heesoo Kim; Ji Chul Jung; Pil Kim; Sung Ho Yeom; Kwan Young Lee; In Kyu Song

doi:10.1016/j.molcata.2006.06.032

Preparation of H₃PMo₁₂O₄₀ catalyst immobilized on surface modified mesostructured cellular foam (SM-MCF) silica and its application to the ethanol conversion reaction

Heesoo Kim, Ji Chul Jung, Pil Kim, Sung Ho Yeom, Kwan Young Lee, In Kyu Song

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

45 Citations (Scopus)

Abstract

Surface of mesostructured cellular foam (MCF) silica was modified by grafting 3-aminopropyl-triethoxysilane (APTES) to have the positive charge, and thus, to provide sites for the immobilization of H₃PMo₁₂O₄₀. By taking advantage of the overall negative charge of [PMo₁₂O₄₀]^3-, H₃PMo₁₂O₄₀ catalyst was chemically immobilized on the aminopropyl group of surface modified MCF (SM-MCF) silica as a charge matching component. It was revealed that H₃PMo₁₂O₄₀ species were finely and molecularly dispersed on the SM-MCF silica via chemical immobilization. In the vapor-phase ethanol conversion reaction, the H₃PMo₁₂O₄₀/SM-MCF silica catalyst showed a higher ethanol conversion than the bulk H₃PMo₁₂O₄₀ catalyst. Furthermore, the H₃PMo₁₂O₄₀/SM-MCF silica catalyst exhibited an enhanced oxidation catalytic activity (formation of acetaldehyde) and a suppressed acid catalytic activity (formation of ethylene and diethylether) compared to the mother catalyst. The enhanced ethanol conversion and oxidation catalytic activity of H₃PMo₁₂O₄₀/SM-MCF silica catalyst was attributed to fine dispersion of H₃PMo₁₂O₄₀ species on the SM-MCF silica via chemical immobilization.

Original language	English
Pages (from-to)	150-155
Number of pages	6
Journal	Journal of Molecular Catalysis A: Chemical
Volume	259
Issue number	1-2
DOIs	https://doi.org/10.1016/j.molcata.2006.06.032
Publication status	Published - 2006 Nov 15

Bibliographical note

Funding Information:
The authors acknowledge the support from Korea Science and Engineering Foundation (KOSEF R01-2004-000-10502-0).

Keywords

3-Aminopropyl-triethoxysilane (APTES)
Grafting
Heteropolyacid catalyst
Immobilization
Mesostructured cellular foam silica
Vapor-phase ethanol conversion reaction

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology
Physical and Theoretical Chemistry

Access to Document

10.1016/j.molcata.2006.06.032

Cite this

Preparation of H₃PMo₁₂O₄₀ catalyst immobilized on surface modified mesostructured cellular foam (SM-MCF) silica and its application to the ethanol conversion reaction. / Kim, Heesoo; Jung, Ji Chul; Kim, Pil et al.
In: Journal of Molecular Catalysis A: Chemical, Vol. 259, No. 1-2, 15.11.2006, p. 150-155.

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

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title = "Preparation of H3PMo12O40 catalyst immobilized on surface modified mesostructured cellular foam (SM-MCF) silica and its application to the ethanol conversion reaction",

abstract = "Surface of mesostructured cellular foam (MCF) silica was modified by grafting 3-aminopropyl-triethoxysilane (APTES) to have the positive charge, and thus, to provide sites for the immobilization of H3PMo12O40. By taking advantage of the overall negative charge of [PMo12O40]3-, H3PMo12O40 catalyst was chemically immobilized on the aminopropyl group of surface modified MCF (SM-MCF) silica as a charge matching component. It was revealed that H3PMo12O40 species were finely and molecularly dispersed on the SM-MCF silica via chemical immobilization. In the vapor-phase ethanol conversion reaction, the H3PMo12O40/SM-MCF silica catalyst showed a higher ethanol conversion than the bulk H3PMo12O40 catalyst. Furthermore, the H3PMo12O40/SM-MCF silica catalyst exhibited an enhanced oxidation catalytic activity (formation of acetaldehyde) and a suppressed acid catalytic activity (formation of ethylene and diethylether) compared to the mother catalyst. The enhanced ethanol conversion and oxidation catalytic activity of H3PMo12O40/SM-MCF silica catalyst was attributed to fine dispersion of H3PMo12O40 species on the SM-MCF silica via chemical immobilization.",

keywords = "3-Aminopropyl-triethoxysilane (APTES), Grafting, Heteropolyacid catalyst, Immobilization, Mesostructured cellular foam silica, Vapor-phase ethanol conversion reaction",

author = "Heesoo Kim and Jung, {Ji Chul} and Pil Kim and Yeom, {Sung Ho} and Lee, {Kwan Young} and Song, {In Kyu}",

note = "Funding Information: The authors acknowledge the support from Korea Science and Engineering Foundation (KOSEF R01-2004-000-10502-0).",

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AU - Kim, Heesoo

AU - Jung, Ji Chul

AU - Kim, Pil

AU - Yeom, Sung Ho

AU - Lee, Kwan Young

AU - Song, In Kyu

N1 - Funding Information: The authors acknowledge the support from Korea Science and Engineering Foundation (KOSEF R01-2004-000-10502-0).

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AB - Surface of mesostructured cellular foam (MCF) silica was modified by grafting 3-aminopropyl-triethoxysilane (APTES) to have the positive charge, and thus, to provide sites for the immobilization of H3PMo12O40. By taking advantage of the overall negative charge of [PMo12O40]3-, H3PMo12O40 catalyst was chemically immobilized on the aminopropyl group of surface modified MCF (SM-MCF) silica as a charge matching component. It was revealed that H3PMo12O40 species were finely and molecularly dispersed on the SM-MCF silica via chemical immobilization. In the vapor-phase ethanol conversion reaction, the H3PMo12O40/SM-MCF silica catalyst showed a higher ethanol conversion than the bulk H3PMo12O40 catalyst. Furthermore, the H3PMo12O40/SM-MCF silica catalyst exhibited an enhanced oxidation catalytic activity (formation of acetaldehyde) and a suppressed acid catalytic activity (formation of ethylene and diethylether) compared to the mother catalyst. The enhanced ethanol conversion and oxidation catalytic activity of H3PMo12O40/SM-MCF silica catalyst was attributed to fine dispersion of H3PMo12O40 species on the SM-MCF silica via chemical immobilization.

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