Next Article in Journal
Surface Chemistry and Catalysis
Next Article in Special Issue
Biomass Derived Chemicals: Furfural Oxidative Esterification to Methyl-2-furoate over Gold Catalysts
Previous Article in Journal
Regenerable Subnanometer Pd Clusters on Zirconia for Highly Selective Hydrogenation of Biomass-Derived Succinic Acid in Water
Previous Article in Special Issue
Effects of Support and Synthetic Procedure for Sol-Immobilized Au Nanoparticles
Article Menu

Export Article

Open AccessFeature PaperArticle

Gold Catalysts on Y-Doped Ceria Supports for Complete Benzene Oxidation

Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., Block 11, Sofia 1113, Bulgaria
Istituto per lo Studio di Materiali Nanostrutturati (ISMN)-CNR, Palermo I-90146, Italy
Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw 01-224, Poland
Institute of Physical Chemistry, Romanian Academy, Bucharest 77208, Romania
Authors to whom correspondence should be addressed.
Academic Editor: Salvatore Scirè
Catalysts 2016, 6(7), 99;
Received: 14 May 2016 / Revised: 28 June 2016 / Accepted: 1 July 2016 / Published: 8 July 2016
(This article belongs to the Collection Gold Catalysts)
PDF [2911 KB, uploaded 8 July 2016]


Gold (3 wt. %) catalysts on Y-doped (1, 2.5, 5 and 7.5 wt. % Y2O3) ceria supports prepared by coprecipitation (CP) or impregnation (IM) were studied in complete benzene oxidation (CBO). A low-extent Y modification was chosen to avoid ordering of oxygen vacancies. The samples were characterized by XRD, TGA, XPS and TPR techniques. A positive role of air pretreatment at 350 °C as compared to 200 °C was established for all Y-containing catalysts and it was explained by cleaning the active sites from carbonates. The oxygen supply cannot be considered as a limiting step for benzene oxidation except for the high 7.5%-doped samples, as suggested by TGA and TPR data. On the basis of XPS results of fresh and used in CBO catalysts, the presence of cationic gold species does not seem important for high CBO activity. The gold catalyst on an IM support with 1% Y-doping exhibited the best performance. A 100% benzene conversion was achieved only over this catalyst and Au/ceria, while it was not reached even at 300 °C over all other studied catalysts. Gold and ceria particle agglomeration or coke formation should be excluded as a possible reason, and the most probable explanation could be associated with the importance of the benzene activation stage. View Full-Text
Keywords: gold catalysts; Y-doped ceria; preparation method; pretreatment conditions; complete benzene oxidation gold catalysts; Y-doped ceria; preparation method; pretreatment conditions; complete benzene oxidation

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Ilieva, L.; Petrova, P.; Liotta, L.F.; Sobczak, J.W.; Lisowski, W.; Kaszkur, Z.; Munteanu, G.; Tabakova, T. Gold Catalysts on Y-Doped Ceria Supports for Complete Benzene Oxidation. Catalysts 2016, 6, 99.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Catalysts EISSN 2073-4344 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top