publication . Article . 2012

Kinetic Study of Oxygen Adsorption over Nanosized Au/γ-Al<sub>2</sub>O<sub>3</sub> Supported Catalysts under Selective CO Oxidation Conditions

George Karaiskakis; Aglaia Georgaka; Dimitrios Gavril;
Open Access English
  • Published: 01 Apr 2012 Journal: Molecules (issn: 1420-3049, Copyright policy)
  • Publisher: MDPI AG
Abstract
O&lt;sub&gt;2&lt;/sub&gt; adsorption is a key process for further understanding the mechanism of selective CO oxidation (SCO) on gold catalysts. Rate constants related to the elementary steps of O&lt;sub&gt;2&lt;/sub&gt; adsorption, desorption and surface bonding, as well as the respective activation energies, over a nanosized Au/γ-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; catalyst, were determined by Reversed-Flow Inverse Gas Chromatography (RF-IGC). The present study, carried-out in a wide temperature range (50–300 °C), both in excess as well as in the absence of H&lt;sub&gt;2&lt;/sub&gt;, resulted in mechanistic insights and kinetic as well as energ...
Subjects
free text keywords: nanoparticles, Au/γ-Αl&lt;sub&gt;2&lt;/sub&gt;Ο&lt;sub&gt;3&lt;/sub&gt;, catalysts, SCO, PROX, reversed-flow inverse gas chromatography, inverse gas chromatography, rate constants, oxygen, carbon monoxide, Organic chemistry, QD241-441
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Article . 2012
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