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  • 1 Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, 30-239, Krakow, Poland
  • | 2 Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okólna 2, 50-422, Wrocław, Poland
  • | 3 Institute of Physical Chemistry, Polish Academy of Sciences, ul. Kasprzaka 44/52, 01-224, Warszawa, Poland
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Abstract

Au/MIICr2O4 (MII = Co, Mn, Fe) catalysts have been tested in the total oxidation of ethane, propane, propene at 300 °C and of CO at 35 °C, and characterized by TEM, XPS and hydrogen thermo-programmed reduction (H2TPR). The catalytic activity has been found to depend on the nature of the oxidized compound. For the CO and ethane oxidation, the activity decreases in the sequence Au/CoCr2O4 > Au/MnCr2O4 ≫ Au/FeCr2O4 and follows the sequence of the decreasing reducibility of the supports and the catalysts, estimated from H2TPR measurements. The activity decreases with the increasing Au particle size in the same order, the reactions then seem structure sensitive. No correlations between the activity and reducibility or the particle size are observed for oxidation of the C3 hydrocarbons: the sequence of the activity for propane is: Au/FeCr2O4 > Au/CoCr2O4 > Au/MnCr2O4, whereas activity in propene oxidation does not change markedly within the studied catalysts. The reaction mechanism in the oxidation of propane and propene seems then to be different from that of oxidation of CO and ethane.

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  • Impact Factor (2019): 1.520
  • Scimago Journal Rank (2019): 0.345
  • SJR Hirsch-Index (2019): 39
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • SJR Quartile Score (2019): Q4 Catalysis
  • Impact Factor (2018): 1.142
  • Scimago Journal Rank (2018): 0.374
  • SJR Hirsch-Index (2018): 37
  • SJR Quartile Score (2018): Q3 Physical and Theoretical Chemistry
  • SJR Quartile Score (2018): Q3 Catalysis

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation
1974
Volumes
per Year
3
Issues
per Year
6
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)