publication . Article . 1993

In-situ Positron Emission of CO Oxidation

van der Swa Wal; van Ra Rutger Santen; KA Vonkeman; G Jonkers;
Open Access
  • Published: 01 Jan 1993 Journal: Berichte der Bunsengesellschaft für physikalische Chemie, volume 97, pages 333-339 (issn: 0005-9021, Copyright policy)
  • Publisher: Wiley
  • Country: Netherlands
Using a Neuro ECAT positron tomograph the Positron Emission computed Tomography (PET) has been utilized to image the catalytic oxidation of CO by using CO and CO2, labelled with short lived positron emitting nuclides. Studies were performed over highly dispersed ceria/y-alumina supported platinum and rhodium catalysts. With a mathematical model of the reaction kinetics, based on the elementary steps of the catalytic reaction and partially on literature surface science data, the effect of CeOz promotion and the presence of NO were quantified in terms of the number of adsorption sites and adsorption equilibrium constants. Oxygen atoms of CO2 remain much longer in ...
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free text keywords: General Chemical Engineering, Rhodium, chemistry.chemical_element, chemistry, Inorganic chemistry, Nuclear chemistry, Desorption, Elementary reaction, Catalysis, Platinum, Adsorption, Noble metal, engineering.material, engineering, Catalytic oxidation
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