Characterization of Electron-Acceptor Sites on the Surface of Sulfated and Chlorinated Alumina by EPR using Spin Probes | Sciact - CRIS-system of Boreskov Institute of Catalysis

Characterization of Electron-Acceptor Sites on the Surface of Sulfated and Chlorinated Alumina by EPR using Spin Probes Conference Abstracts

Conference

EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 Aug - 4 Sep 2015 , Казань

Source

EuropaCat XII. Catalysis: Balancing the use of fossil and renewable resources. XII European Congress on Catalysis, Kazan (Russia), 30 August - 4 September, 2015 : Book of Abstracts
Compilation, BIC SB RAS. Novosibirsk.2015. 2184 c. ISBN 978-5-906376-10-7. РИНЦ

Output data

Year: 2015, Pages: 553-554 Pages count : 2

Authors

Shuvarakova E.I. ^1,2 , Bedilo A.F. ^1,2

Affiliations

1	Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
2	Novosibirsk Institute of Technology, Moscow State University of Design and Technology, Novosibirsk, Russia

Funding (2)

1	Russian Foundation for Basic Research	15-03-08070
2	Russian Foundation for Basic Research	13-03-12227

Alumina modification with sulfates was found to result in a gradual increase of the concentration of electron-acceptor sites characterized using the formation of radical cations from aromatic molecules with different ionization potentials. The strongest electron-acceptor sites tested with toluene immediately after adsorption were only detected with a concentration of SO3 not less than 4%. The weakest sites tested with perylene presented on the surface of all the samples, with their concentration on 12% SO3 sample being 3×1019 g -1. Chlorination only led to minor growth of the concentration of the weak sites. Recommendations on the use of spin probes for testing electron-acceptor sites with different strength are suggested. A mechanism of the polycondensation of aromatic probes on the surface electron-acceptor sites explaining experimental results and possible structures of such sites were proposed

Shuvarakova E.I. , Bedilo A.F.
Characterization of Electron-Acceptor Sites on the Surface of Sulfated and Chlorinated Alumina by EPR using Spin Probes
In compilation EuropaCat XII. Catalysis: Balancing the use of fossil and renewable resources. XII European Congress on Catalysis, Kazan (Russia), 30 August - 4 September, 2015 : Book of Abstracts. – BIC SB RAS., 2015. – C.553-554. – ISBN 978-5-906376-10-7.

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