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Effect of γ-Al2O3 Hydrothermal Treatment on the Formation and Properties of Platinum Sites in Pt/γ-Al2O3 Catalysts Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Applied Catalysis A: General
ISSN: 0926-860X , E-ISSN: 1873-3875
Output data Year: 2014, Volume: 469, Pages: 472-482 Pages count : 11 DOI: 10.1016/j.apcata.2013.10.027
Tags γ-Alumina, Adsorption, Hydrothermal treatment, Platinum-alumina catalysts, Surface acidity
Authors Mironenko Roman M. 1 , Belskaya Olga B. 1,2 , Talsi Valentin P. 1,2 , Gulyaeva Tatyana I. 1 , Kazakov Maxim O. 1 , Nizovskii Alexander I. 3 , Kalinkin Alexander V. 3 , Bukhtiyarov Valerii I. 3 , Lavrenov Alexander V. 1 , Likholobov Vladimir A. 1,4
Affiliations
1 Institute of Hydrocarbons Processing, Siberian Branch of Russian Academy of Sciences, Neftezavodskaya st., 54, 644040 Omsk, Russia
2 Omsk State Technical University, pr. Mira, 11, 644050 Omsk, Russia
3 Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, pr. Lavrentieva, 5, 630090 Novosibirsk, Russia
4 Omsk Scientific Centre, Siberian Branch of Russian Academy of Sciences, pr. Marksa, 15, 644024 Omsk, Russia

Funding (1)

1 Russian Foundation for Basic Research 09-03-01013

Abstract: The effect of hydrothermal treatment (HTT) of γ-alumina on the state of its surface functional cover, anchoring of hexachloroplatinate, and properties of platinum sites was investigated. Hydrothermal treatment of γ-Al2O3 was found to increase the fraction of surface bridging OH groups and concentration of Lewis acid sites (LAS) and alter the metal complex–support interaction. Adsorption of hexachloroplatinate on the support surface is accompanied mainly by the formation of outer-sphere complexes, which are characterized by a lower reduction temperature. As a result, dispersion and electronic state of supported platinum are changed. Influence of γ-Al2O3 hydrothermal treatment on the catalytic properties of Pt/Al2O3 in n-hexane transformations and propane dehydrogenation was demonstrated. The revealed effect of γ-Al2O3 hydrothermal treatment on the formation of platinum sites in Pt/Al2O3 catalysts can be of fundamental importance for the steps of supported system synthesis where solid phase is contacting with water and aqueous solutions (impregnation and drying).
Cite: Mironenko R.M. , Belskaya O.B. , Talsi V.P. , Gulyaeva T.I. , Kazakov M.O. , Nizovskii A.I. , Kalinkin A.V. , Bukhtiyarov V.I. , Lavrenov A.V. , Likholobov V.A.
Effect of γ-Al2O3 Hydrothermal Treatment on the Formation and Properties of Platinum Sites in Pt/γ-Al2O3 Catalysts
Applied Catalysis A: General. 2014. V.469. P.472-482. DOI: 10.1016/j.apcata.2013.10.027 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: May 28, 2013
Accepted: Sep 30, 2013
Published online: Oct 25, 2013
Published print: Jan 1, 2014
Identifiers:
publication_identifier.wos_identifier_type WOS:000329266500056
publication_identifier.scopus_identifier_type 2-s2.0-84887278893
publication_identifier.rinz_identifier_type 21861093
publication_identifier.accession_number_identifier_type 2013:1920265
publication_identifier.chemical_accession_number_identifier_type 160:80268
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