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The catalytic performance of mesoporous cerium oxides prepared through a nanocasting route for the total oxidation of naphthalene

Puertolas, B, Solsona, Benjamin Espriu, Agouram, S., Murillo, R., Mastral, A. M., Avanda, A., Taylor, Stuart Hamilton and Garcia, T. 2010. The catalytic performance of mesoporous cerium oxides prepared through a nanocasting route for the total oxidation of naphthalene. Applied Catalysis B: Environmental 93 (3-4) , pp. 395-405. 10.1016/j.apcatb.2009.10.014

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Abstract

Cerium oxides have been prepared by nanocasting of a mesoporous siliceous KIT-6. Through this synthesis method a partially ordered mesoporous structure, as demonstrated by several characterization techniques (N2 adsorption, XRD and HRTEM) has been obtained. Accordingly, very high surface areas have been achieved (up to 163 m2/g), despite using high calcination temperatures (550 °C). We have demonstrated that the aging temperature of the siliceous template is of outstanding importance, as this parameter is directly responsible for both the pore size and the surface area of the catalysts. In addition, whilst a low preparation temperature (40 °C) makes the further removal of the silica template difficult, higher temperatures lead to more compact frameworks with a higher interconnectivity among the networks. These cerium oxide materials have been tested as catalysts for the total oxidation of naphthalene, and display excellent activity, remarkably higher than commercial CeO2. The mesoporous ceria catalysts also demonstrate a high degree of stability with extended time-on-stream and most importantly using high reaction temperatures. © 2009 Elsevier B.V. All rights reserved.

Item Type: Article
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: Aging temperatures; Calcination temperature; Catalytic combustion; Catalytic performance; Ceria catalysts; Cerium oxides; Characterization techniques; Compact framework; Degree of stability; High reaction temperatures; High surface area; Higher temperatures; Interconnectivity; Mesoporous; Mesoporous CeO; Nanocasting; On-stream; Ordered mesoporous; Preparation temperatures; Silica templates; Surface area; Synthesis method; Total oxidation; XRD, Adsorption; Calcination; Catalysis; Catalysts; Catalytic oxidation; Cerium; Cerium compounds; Combustion; Metal recovery; Oxidation; Silica, Naphthalene
Additional Information: cited By (since 1996) 6
Publisher: Elsevier BV
ISSN: 09263373
Last Modified: 03 Nov 2017 01:37
URI: http://orca.cf.ac.uk/id/eprint/10237

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