Hydrogen content and graphitization of carbonaceous deposits on noble metals and alloys studied with secondary ion mass spectrometry

J.W. Niemantsverdriet, Dick van Langeveld

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    8 Citations (Scopus)

    Abstract

    Carbonaceous deposits formed from ethylene at 325, 525 and 775 K on Pt, Ir, Rh, PtRh and PtIr have been investigated with SIMS and AES. Negative SIMS spectra are very sensitive for the state of the deposit. It is argued that the intense negative hydrocarbon ions in SIMS are formed by reactions between ions and neutral species. Carbonaceous deposits formed between 500 and 800 K are relatively hydrogen—rich on Ir, graphitic on Pt and depleted in hydrogen on Rh. Alloying of Pt with Ir increases the hydrogen content and decreases the graphitization of the carbon, alloying of Pt with Rh has less effect.
    Original languageEnglish
    Title of host publicationCatalysis 1987 : Proceedings of the 10th North American Meeting of the Catalysis Society San Diego, CA
    EditorsJ.W. Ward
    Place of PublicationAmsterdam
    PublisherElsevier
    Pages769-781
    ISBN (Print)0-444-42955-7
    DOIs
    Publication statusPublished - 1988
    Event10th North American Catalysis Society Meeting (NAM10), May 17-22, 1987, San Diego, CA, USA - San Diego, CA, United States
    Duration: 17 May 198722 May 1987

    Publication series

    NameStudies in Surface Science and Catalysis
    Volume38
    ISSN (Print)0167-2991

    Conference

    Conference10th North American Catalysis Society Meeting (NAM10), May 17-22, 1987, San Diego, CA, USA
    Abbreviated titleNAM10
    CountryUnited States
    CitySan Diego, CA
    Period17/05/8722/05/87

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