Hydrogen-induced CO2 formation from ethylene deposits on Pt during consecutive O2 and H2 exposures

The oxidation of C2H4 deposits on polycrystalline Pt when exposed to consecutive O2 and H2 pulses at room temperature has been investigated in a long (L = 36 mm), shallow (d = 600–700 nm) micromachined glass–SiO2–Pt channel. Hydrogen-induced CO2 formation from species accumulated on the Pt surface w...

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Bibliographic Details
Published inCatalysis letters Vol. 65; no. 1-3; pp. 25 - 31
Main Authors NORBERG, P, LUNDSTRÖM, I, EKEDAHL, L.-G
Format Journal Article
LanguageEnglish
Published Dordrecht Springer 01.03.2000
Springer Nature B.V
Subjects
Carbon dioxide
Catalysis
Catalytic reactions
Chemistry
Deposits
Exact sciences and technology
Exposure
General and physical chemistry
Micromachining
Oxidation
Regeneration
Silicon dioxide
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Oxygen
Catalytic reaction
Catalyst regeneration
Hydrocarbon
Hydrogen
Carbon dioxide
Ethylene
Polycrystal
Transition metal
Heterogeneous catalysis
Platinum
Carbon monoxide
Catalyst
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Summary:The oxidation of C2H4 deposits on polycrystalline Pt when exposed to consecutive O2 and H2 pulses at room temperature has been investigated in a long (L = 36 mm), shallow (d = 600–700 nm) micromachined glass–SiO2–Pt channel. Hydrogen-induced CO2 formation from species accumulated on the Pt surface was observed. Frequent switching of the O2/H2 exposure pulses was found to increase the efficiency of the oxidation of the carbonaceous deposits markedly. The observations may be of general interest for the regeneration of contaminated catalysts.
ISSN:1011-372X
1572-879X
DOI:10.1023/A:1019025523442