Although the relation between carbon structure and reactivity is well-known from thermal and oxidative studies of coal, char and graphite, the relation for soot remains unstudied. In this article, the dependence of the soot oxidation rate upon nanostructure, namely the length, separation distance and curvature of the graphene segments is shown.Soots possessing graphitic, fullerenic or amorphous nanostructure are used for this comparison. Surprisingly, the different soot nanostructures are readily produced by using different fuels and pyrolysis conditions. Reflecting different ratios of edge to basal plane sites or amounts of ring strain imposed by curvature, burnout rates are found to differ by nearly 500% for the soots studied here.Using high resolution transmission electron images as input data, this paper interprets the varied oxidation rates in terms of differences in nanostructure between the soots. In addition to fringe length, the fringe analysis algorithm can also provide fringe separation distance and tortuosity. Results are shown in the form of histograms for each of these quantities. The combination of the three measurements can give a better indication of the graphitic structure within nanoscale carbons and can distinguish carbon nanostructure based upon fullerenic, graphitic and amorphous content.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Soot Nanostructure: Definition, Quantification and Implications


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE 2005 World Congress & Exhibition ; 2005



    Publication date :

    2005-04-11




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Soot nanostructure: definition, quantification and implications

    Vander Wal,R.L. / NASA,US | Automotive engineering | 2005


    2005-01-0964 Soot Nanostructure: Definition, Quantification and Implications

    Wal, R. L. V. / Society of Automotive Engineers | British Library Conference Proceedings | 2005




    Effect of Fuel Aromatics on In-Flame Diesel Soot Nanostructure via HRTEM

    Okabe, Kei / Takahata, Nozomi / Aizawa, Tetsuya et al. | SAE Technical Papers | 2015