Sökning: "indulin AT"

Hittade 3 avhandlingar innehållade orden indulin AT.

  1. 1. Delignification and bleachability of kraft pulps pretreated with nitrogen dioxide

    Författare :Per Larsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; chlorine dioxide; oxygen bleaching; molecular mass; paper properties; ozone bleaching; nitrogen dioxide; kraft pulps; pretreatment; gel permeation chromatography; indulin AT; hydrogen peroxide; consecutive alkaline extractions;

    Sammanfattning : .... LÄS MER

  3. 2. Influence of the Gas Phase on Pretreatment of Kraft Pulp with Nitrogen Oxides

    Författare :Dennis Rasmusson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nitric oxide; oxygen; acid hydrolysis;

    Sammanfattning : While nitric oxide (NO) is virtually inert against water-impregnated kraft pulp it participates in important reactions when reactive nitrogen compounds, e.g. NO2 and HNO2, have initiated lignin reactions. Experiments with kraft lignin (Indulin AT) showed that nitric oxide was both produced and consumed during treatment with NO2. LÄS MER

  4. 3. Base-catalyzed depolymerization of kraft lignin for valuable chemical production

    Författare :Kena Li; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Kraft lignin; Depolymerization; CFR; Membrane filtration; Guaiacol; Vanillin; bioconversion;

    Sammanfattning : Lignin is one of the three predominant biopolymers that make up plants together with cellulose and hemicellulose, and it is the only plant component that is based on aromatic units. The industrial kraft pulping process generates large amounts of lignin, which is currently used to generate heat for the process. LÄS MER