Effects of the CePO4 on the oxygen storage and release properties of CeO2 and Ce0.8Zr0.2O2 solid solution

Larese, C.; Galisteo, F. Cabello; Granados, M. Lòpez; Mariscal, R.; Fierro, J. L. G.; Lambrou, P.S.; Efstathiou, Angelos M.

doi:10.1016/j.jcat.2004.06.013

Cited by 79 publications

(49 citation statements)

References 57 publications

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“…At higher ZnO loadings, ZnO islands start to grow on top of the distorted ZnO monolayer being bigger the size of the islands; these becoming a physical barrier for the reduction of CeO 2 . This is in agreement with the data reported by Larese et al in their study of the oxygen storage and release properties of CeO 2 and Ce-Zr-O systems modified with phosphorus [37].…”

Section: Catalytic Activitysupporting

confidence: 93%

Oxidation of CO over gold supported on Zn-modified ceria catalysts

et al. 2011

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A series of Zn-modified ceria solids were prepared by thermal decomposition of the corresponding metal propionates. The formation of segregated ZnO particles on the ceria surface is evidenced for these solids using X-ray diffraction; in addition to this the characterization data may allow discarding the formation of a ZnO-CeO 2 solid solution. On modifying with Zn, the reducibility of the ceria support is enhanced, being the highest reducibility the one obtained for the ZnO-CeO 2 solid having a 1:9 Zn:Ce atomic ratio (CeZn10). The activity of this solid in the CO oxidation reaction was the highest among the tested Zn-modified ceria solids. Therefore, catalysts containing 1 wt.% gold, supported on pure ceria and CeZn solids, were prepared, characterized and their catalytic activities tested.The Zn-modified gold catalyst is more active than the un-modified Au/CeO 2 catalyst in the oxidation of CO; this behavior is related to the higher metallic dispersion of gold on the CeZn support surface. However, the number of oxygen vacancies acting as nucleation sites for gold, is hardly modified in the Zn-modified ceria support and, therefore, the higher gold dispersion must be related to high electron density sites on the catalyst surface as a result of Au-Ce-Zn interaction, this improved gold dispersion results in higher activities for CO oxidation.

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Section: Catalytic Activitysupporting

confidence: 93%

Oxidation of CO over gold supported on Zn-modified ceria catalysts

et al. 2011

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“…5. Several authors had reported the complexity of the Ce3d spectra in Ce-based materials [21][22][23] …”

Section: Xpsmentioning

confidence: 99%

Oxidative Dehydrogenation of Ethane over Ce-based Monolithic Catalysts using CO2 as Oxidant

Shi

Wang

et al. 2008

Catal Lett

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Highly active Ce-based monolithic catalysts for oxidative dehydrogenation of ethane with CO 2 were prepared and characterized by various techniques. The high oxidation state Ce 4? species had higher catalytic activity than the Ce 3? species in the monolithic catalysts. The Ce 4? species was reduced to Ce 3? species in the ethane dehydrogenation process, and the reduced Ce species was reoxidized to the Ce 4? species by treatment with CO 2 at 750°C, the Ce redox cycle played an important role in the catalyst's high activity.

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“…In addition, transition metal based catalysts using the Cu [26][27][28][29], Mo [30], Ni [31,32], and V [33][34][35][36] metals have been also reported. Cerium oxide (ceria, CeO 2 ) is considered an attractive support due to its high oxygen storage capacity (OSC) [37,38]. Actually, many researchers reported that ceria supported precious metal catalysts exhibit high activity for formaldehyde, MeOH, and other VOCs oxidation reactions [7,8,13,17,19,24,37,39].…”

Section: Introductionmentioning

confidence: 99%

“…Cerium oxide (ceria, CeO 2 ) is considered an attractive support due to its high oxygen storage capacity (OSC) [37,38]. Actually, many researchers reported that ceria supported precious metal catalysts exhibit high activity for formaldehyde, MeOH, and other VOCs oxidation reactions [7,8,13,17,19,24,37,39]. However, the cost of precious metal catalysts and their catalytic degradation will become serious problems for the practical application.…”

Section: Introductionmentioning

confidence: 99%