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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

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
2 Omsk State Technical University
3 Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences
4 Omsk Scientific Centre, Siberian Branch of Russian Academy of Sciences

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 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
Submitted: May 28, 2013
Accepted: Oct 17, 2013
Published online: Oct 25, 2013
Published print: Jan 1, 2014
Identifiers:
Web of science: WOS:000329266500056
Scopus: 2-s2.0-84887278893
Elibrary: 21861093
Chemical Abstracts: 2013:1920265
Chemical Abstracts (print): 160:80268
OpenAlex: W1981248979
Citing:
DB Citing
Web of science 51
Scopus 63
Elibrary 28
OpenAlex 64
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