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Catalysts 2016, 6(5), 73; doi:10.3390/catal6050073

Adsorption and Oxidation Investigations over Pt/Al2O3 Catalyst: A Microcalorimetric Study

Chemical Reaction Engineering and Competence Centre for Catalysis, Chalmers University of Technology, Göteborg SE-412 96, Sweden
Department of Petroleum Processing Engineering and Environmental Protection, Petroleum-Gas University of Ploiesti, 39 Bucuresti Blvd., Ploiesti 100680, Romania
Author to whom correspondence should be addressed.
Academic Editors: Jae-Soon Choi and Petr Kočí
Received: 11 February 2016 / Revised: 27 April 2016 / Accepted: 5 May 2016 / Published: 17 May 2016
(This article belongs to the Special Issue Automotive Emission Control Catalysts)
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The differential adsorption heats of oxygen and NO, as well as catalytic oxidation behavior during NO oxidation and NO2 dissociation reactions over supported Pt-catalysts, were investigated by microcalorimetric measurements. The average heat of adsorption (∆H) of oxygen ranged from 310 kJ/mol at 200 °C to 289 kJ/mol at 400 °C. Over this temperature range formation of platinum oxides and coverage dependence caused variations in the apparent heat of adsorption. NO heat of adsorption from 50 to 150 °C was near constant with an average value of 202 kJ/mol over the temperature range. View Full-Text
Keywords: microcalorimetry; adsorption heat; Pt/Al2O3; NO; NO2 oxidation; Pt dispersion microcalorimetry; adsorption heat; Pt/Al2O3; NO; NO2 oxidation; Pt dispersion

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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).

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Mihai, O.; Creaser, D.; Olsson, L. Adsorption and Oxidation Investigations over Pt/Al2O3 Catalyst: A Microcalorimetric Study. Catalysts 2016, 6, 73.

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