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 journalArticle

42 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 languageEnglish
Pages (from-to)150-155
Number of pages6
JournalJournal of Molecular Catalysis A: Chemical
Volume259
Issue number1-2
DOIs
Publication statusPublished - 2006 Nov 15

Fingerprint

foams
Silicon Dioxide
Foams
Ethanol
ethyl alcohol
Silica
silicon dioxide
catalysts
preparation
Catalysts
immobilization
catalytic activity
Catalyst activity
Oxidation
oxidation
Acetaldehyde
acetaldehyde
(PMo12O40)3-
Ethylene
ethylene

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
  • Materials Science (miscellaneous)

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; Yeom, Sung Ho; Lee, Kwan Young; Song, In Kyu.

In: Journal of Molecular Catalysis A: Chemical, Vol. 259, No. 1-2, 15.11.2006, p. 150-155.

Research output: Contribution to journalArticle

@article{f60da9cd0e7d4c75bc9455faedc4dc6a,
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}",
year = "2006",
month = "11",
day = "15",
doi = "10.1016/j.molcata.2006.06.032",
language = "English",
volume = "259",
pages = "150--155",
journal = "Journal of Molecular Catalysis A: Chemical",
issn = "1381-1169",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Preparation of H3PMo12O40 catalyst immobilized on surface modified mesostructured cellular foam (SM-MCF) silica and its application to the ethanol conversion reaction

AU - Kim, Heesoo

AU - Jung, Ji Chul

AU - Kim, Pil

AU - Yeom, Sung Ho

AU - Lee, Kwan Young

AU - Song, In Kyu

PY - 2006/11/15

Y1 - 2006/11/15

N2 - 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.

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.

KW - 3-Aminopropyl-triethoxysilane (APTES)

KW - Grafting

KW - Heteropolyacid catalyst

KW - Immobilization

KW - Mesostructured cellular foam silica

KW - Vapor-phase ethanol conversion reaction

UR - http://www.scopus.com/inward/record.url?scp=33749998294&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33749998294&partnerID=8YFLogxK

U2 - 10.1016/j.molcata.2006.06.032

DO - 10.1016/j.molcata.2006.06.032

M3 - Article

AN - SCOPUS:33749998294

VL - 259

SP - 150

EP - 155

JO - Journal of Molecular Catalysis A: Chemical

JF - Journal of Molecular Catalysis A: Chemical

SN - 1381-1169

IS - 1-2

ER -