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Nanoporous silica-supported nanometric palladium: synthesis, characterization, and catalytic deep oxidation of benzene

Nanoporous silica-supported nanometric palladium: synthesis, characterization, and catalytic deep oxidation of benzene
Nanoporous silica-supported nanometric palladium: synthesis, characterization, and catalytic deep oxidation of benzene
In this present study, nanoporous silica SBA-15 supported palladium catalysts are prepared through two different methods. The catalysts are employed for catalytic deep oxidation reaction of benzene at a high gas hourly space velocity of 100 000 h-1. It is found that the traditional aqueous impregnation method has some difficulties and disadvantages in obtaining highly dispersed palladium active phases. Whereas, when a grafting procedure is employed, palladium tends to be highly dispersed as nanoparticles due to the confinement of the nanosized pore channels of the support materials. The catalysts prepared via the grafting procedure catalyze the benzene oxidation far more effectively than those prepared via aqueous impregnation method, and complete conversion of benzene can be achieved below 190 °C over the most active catalyst. The nanoporous silica-supported palladium catalysts are promising materials for the control of some types of VOCs such as benzene.
0013-936X
1319-1323
Li, Jinjun
2eb37e2f-032f-47f3-b811-220db93429fb
Xu, Xiuyan
ea948a8a-3c6b-4a92-9de8-30ccfe4cfa75
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Hao, Z.P.
989e7e7f-2a60-4f50-b322-04a78a81fe76
Hu, C.
72080075-d5a4-4f5e-81b3-5e9e34d58958
Li, Jinjun
2eb37e2f-032f-47f3-b811-220db93429fb
Xu, Xiuyan
ea948a8a-3c6b-4a92-9de8-30ccfe4cfa75
Jiang, Zheng
bcf19e78-f5c3-48e6-802b-fe77bd12deab
Hao, Z.P.
989e7e7f-2a60-4f50-b322-04a78a81fe76
Hu, C.
72080075-d5a4-4f5e-81b3-5e9e34d58958

Li, Jinjun, Xu, Xiuyan, Jiang, Zheng, Hao, Z.P. and Hu, C. (2005) Nanoporous silica-supported nanometric palladium: synthesis, characterization, and catalytic deep oxidation of benzene. Environmental Science & Technology, 39 (5), 1319-1323. (doi:10.1021/es0491174).

Record type: Article

Abstract

In this present study, nanoporous silica SBA-15 supported palladium catalysts are prepared through two different methods. The catalysts are employed for catalytic deep oxidation reaction of benzene at a high gas hourly space velocity of 100 000 h-1. It is found that the traditional aqueous impregnation method has some difficulties and disadvantages in obtaining highly dispersed palladium active phases. Whereas, when a grafting procedure is employed, palladium tends to be highly dispersed as nanoparticles due to the confinement of the nanosized pore channels of the support materials. The catalysts prepared via the grafting procedure catalyze the benzene oxidation far more effectively than those prepared via aqueous impregnation method, and complete conversion of benzene can be achieved below 190 °C over the most active catalyst. The nanoporous silica-supported palladium catalysts are promising materials for the control of some types of VOCs such as benzene.

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e-pub ahead of print date: 31 December 2004
Published date: 2005
Organisations: Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 352793
URI: http://eprints.soton.ac.uk/id/eprint/352793
ISSN: 0013-936X
PURE UUID: 9e661940-1196-4dff-8a4b-eb5e7360442b
ORCID for Zheng Jiang: ORCID iD orcid.org/0000-0002-7972-6175

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Date deposited: 17 Jun 2013 13:18
Last modified: 10 Dec 2019 01:35

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Contributors

Author: Jinjun Li
Author: Xiuyan Xu
Author: Zheng Jiang ORCID iD
Author: Z.P. Hao
Author: C. Hu

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