Magnetic Properties Study of Coal Oxidation Process

B. , Kurniawan and Supiyanto, Supiyanto and I. , Sugihartono and Sunarno, Sunarno and J. , Jamaludin and L. , Hermanto and S. , Soejati and S. , Soeyati and Nukman, Nukman and S, Poertadji (2003) Magnetic Properties Study of Coal Oxidation Process. Materials Science Forum (Advanced Materials Processing II) , 437-43. pp. 493-498. ISSN 0255-5476

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    Abstract

    Magnetic properties of coal samples were studied by using electron spin resonance (ESR) spectrometer. The spectra linewidth were determined from ESR measurement results. We observerd that these paramaters depend on heating temperature. Spectra of all samples showed both braoadening and narrowing phenomena. It is indicated that the change of spectra linewidth is due to dipolar interactions of unpaired electrons and the unresolved hyperfine structure of interactions of unpaired electrons wih neighbouring protons. Keywords: Coal, ESR, Free radical, linewidth.

    Item Type: Article
    Subjects: T Technology > TJ Mechanical engineering and machinery
    Divisions: Faculty of Engineering > Department of Mechanical Engineering
    Depositing User: Nukman Nukman
    Date Deposited: 26 Dec 2013 17:05
    Last Modified: 26 Dec 2013 17:05
    URI: http://eprints.unsri.ac.id/id/eprint/3289

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