Sökning: "1H and 13C NMR spectra of lignin"

Hittade 2 avhandlingar innehållade orden 1H and 13C NMR spectra of lignin.

  1. 1. Precipitation of Kraft Lignin: Yield and Equilibrium

    Författare :Weizhen Zhu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lignin precipitation; molecular weight of lignin; 1H and 13C NMR spectra of lignin; black liquor; Poisson-Boltzmann cell model; LignoBoost process;

    Sammanfattning : Kraft pulping is the dominant pulping process used in the world today. The material efficiency in modern kraft pulp mills is, however, only 40−55% and the final product consists mainly of cellulose. Recently, a novel process called “LignoBoost” has been introduced to separate lignin from kraft black liquor. LÄS MER

  3. 2. Equilibrium of lignin precipitation: The effects of pH, temperature, ion strength and wood origins

    Författare :Weizhen Zhu; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; black liquor; 1H and 13C NMR spectra of lignin; carbohydrate analysis; molecular weight of lignin; LignoBoost process; lignin precipitation;

    Sammanfattning : The kraft process is the predominant method for producing pulp in Scandinavia. However, the material efficiency in modern kraft pulp mills for pulp production is only 40−55% and the final product consists mainly of cellulose. A novel process called “LignoBoost” has been introduced recently for extracting lignin from alkaline black liquor. LÄS MER