Au/TiO2@SBA-15 nanocomposite catalysts for the direct propylene epoxidation with O2 and H2 mixtures

C.-H. Liu; Y. Guan; E.J.M. Hensen; J.-F. Lee; C.-M. Yang

doi:10.1016/j.jcat.2011.06.001

Au/TiO2@SBA-15 nanocomposite catalysts for the direct propylene epoxidation with O2 and H2 mixtures

C.-H. Liu, Y. Guan, E.J.M. Hensen, J.-F. Lee, C.-M. Yang

Inorganic Materials & Catalysis

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Abstract

A nanostructured Au/TiO2@SBA-15 catalyst has been prepared and applied in propylene epoxidation with a mixture of O2/H2. The mesopores of SBA-15 were first deactivated by grafting of hydrophobic groups. Titanium was then selectively grafted in the micropores of SBA-15 by reaction with titanium isopropoxide followed by calcination and deposition of Au nanoparticles. The nanocomposite catalysts exhibited relatively stable propylene oxide (PO) production with small amounts of propanal and acetone byproducts. A catalyst prepared by grafting with trimethylsilyl groups, a Ti/Si ratio of 0.05 and very small Au nanoparticles (

Original language	English
Pages (from-to)	94-102
Number of pages	9
Journal	Journal of Catalysis
Volume	282
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2011.06.001
Publication status	Published - 2011

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title = "Au/TiO2@SBA-15 nanocomposite catalysts for the direct propylene epoxidation with O2 and H2 mixtures",

abstract = "A nanostructured Au/TiO2@SBA-15 catalyst has been prepared and applied in propylene epoxidation with a mixture of O2/H2. The mesopores of SBA-15 were first deactivated by grafting of hydrophobic groups. Titanium was then selectively grafted in the micropores of SBA-15 by reaction with titanium isopropoxide followed by calcination and deposition of Au nanoparticles. The nanocomposite catalysts exhibited relatively stable propylene oxide (PO) production with small amounts of propanal and acetone byproducts. A catalyst prepared by grafting with trimethylsilyl groups, a Ti/Si ratio of 0.05 and very small Au nanoparticles (",

author = "C.-H. Liu and Y. Guan and E.J.M. Hensen and J.-F. Lee and C.-M. Yang",

year = "2011",

doi = "10.1016/j.jcat.2011.06.001",

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T1 - Au/TiO2@SBA-15 nanocomposite catalysts for the direct propylene epoxidation with O2 and H2 mixtures

AU - Liu, C.-H.

AU - Guan, Y.

AU - Hensen, E.J.M.

AU - Lee, J.-F.

AU - Yang, C.-M.

PY - 2011

Y1 - 2011

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AB - A nanostructured Au/TiO2@SBA-15 catalyst has been prepared and applied in propylene epoxidation with a mixture of O2/H2. The mesopores of SBA-15 were first deactivated by grafting of hydrophobic groups. Titanium was then selectively grafted in the micropores of SBA-15 by reaction with titanium isopropoxide followed by calcination and deposition of Au nanoparticles. The nanocomposite catalysts exhibited relatively stable propylene oxide (PO) production with small amounts of propanal and acetone byproducts. A catalyst prepared by grafting with trimethylsilyl groups, a Ti/Si ratio of 0.05 and very small Au nanoparticles (

U2 - 10.1016/j.jcat.2011.06.001

DO - 10.1016/j.jcat.2011.06.001

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VL - 282

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EP - 102

JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 1

ER -

Au/TiO2@SBA-15 nanocomposite catalysts for the direct propylene epoxidation with O2 and H2 mixtures

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