TPD STUDY ON H//2O-GASIFIED AND O//2-CHEMISORBED COAL CHARS.

Takashi Kyotani, Z. G. Zhang, S. Hayashi, A. Tomita

    Research output: Contribution to journalConference articlepeer-review

    2 Citations (Scopus)

    Abstract

    Steam gasification reaction of coal char is a very important reaction in both theoretical aspects and industrial applications. It is generally accepted that surface oxygen complexes on carbon substrate function as intermediate in gasification reaction and that such surface complexes are formed only at active sites. Temperature-programmed desorption (TPD) technique is very useful in yielding information on surface oxygen complexes. By using TPD technique, this paper intends to clarify the nature of surface complexes on coal char after H//2O gasification or after O//2 chemisorption. In addition, the gasification reactivity was discussed in relation to TPD patterns of H//2O-gasified char or O//2-chemisorbed char. The effect of coal type and the mineral matter in coal on TPD pattern was also investigated.

    Original languageEnglish
    Pages (from-to)279-285
    Number of pages7
    JournalACS Division of Fuel Chemistry, Preprints
    Volume32
    Issue number1
    Publication statusPublished - 1987 Jan 1

    ASJC Scopus subject areas

    • Energy(all)

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