Articles producció científica> Enginyeria Química

Hydrolysis of dilute acid-pretreated cellulose under mild hydrothermal conditions

  • Identification data

    Identifier: PC:743
    Handle: https://hdl.handle.net/20.500.11797/PC743
    Authors:
    Chimentão, R.J.Lorente, E.Gispert-Guirado, F.Medina, F.López, F.
    Abstract:
    10.1016/j.carbpol.2014.04.001

  • Others:

    Author, as appears in the article.: Chimentão, R.J. Lorente, E. Gispert-Guirado, F. Medina, F. López, F.
    Papper version: info:eu-repo/semantics/acceptedVersion
    Department: Enginyeria Química
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Abstract: The hydrolysis of dilute acid-pretreated cellulose was investigated in a conventional oven and under microwave heating. Two acids - sulfuric and oxalic - were studied. For both hydrothermal conditions (oven and microwave) the resultant total organic carbon (TOC) values obtained by the hydrolysis of the cellulose pretreated with sulfuric acid were higher than those obtained by the hydrolysis of the cellulose pretreated with oxalic acid. However, the dicarboxylic acid exhibited higher hydrolytic efficiency towards glucose. The hydrolysis of cellulose was greatly promoted by microwave heating. The Rietveld method was applied to fit the X-ray patterns of the resultant cellulose after hydrolysis. Oxalic acid preferentially removed the amorphous region of the cellulose and left the crystalline region untouched. On the other hand, sulfuric acid treatment decreased the ordering of the cellulose by partially disrupting its crystalline structure.
    Entity: Universitat Rovira i Virgili.
    Journal publication year: 2014
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 0008-6215
    First page: 116
    Last page: 124
    Journal volume: 111