Search for dissertations about: "chemistry of biomass"

Showing result 1 - 5 of 161 swedish dissertations containing the words chemistry of biomass.

  2. 1. Green Aromatics: Catalytic Valorisation of bio-derived 2,5-dimethylfuran over Zeolites and Zeotypes

    Author : Christopher Sauer; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Biomass conversion; infrared spectroscopy; BTX Aromatics; 2; 5-dimethylfuran; Zeolite; Catalysis; Online Analysis; Zeotype;

    Abstract : This thesis discusses the use of biomass as a potentially green feedstock for the chemical industry in the urgent shift away from fossil resources. I elaborate on reasons why we cannot afford to burn virgin biomass for energy production, among them a variety of ecosystem services that forests and other lands provide. READ MORE

  4. 2. Catalyst Design for the Valorisation of Biomass-derived Furans into Aromatics

    Author : Guido J.L. de Reijer; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; aromatics; 2; 5-dimethylfuran; gallium; biomass; furans; production of aromatics; zeolites; biomass conversion; catalysis;

    Abstract : Anno 2023, mankind must strive towards a more sustainable chemical industry; one that does not solely rely on fossil fuels but also utilises renewable feedstocks such as biomass. Biomass can be catalytically converted into commodity chemicals such as aromatics, through intermediates like furans. READ MORE

  5. 3. Fractionation of woody biomass : lignin and suberin in focus

    Author : Ivan Kumaniaev; Joseph Samec; Claudia Crestini; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lignocellulose; lignin; suberin; biomass; palladium; catalysis; flow chemistry; organisk kemi; Organic Chemistry;

    Abstract : This thesis is dedicated to the research of fractionation and valorization of different types of woody biomass. In the first part, oak (Quercus suber) and birch (Betula pendula) barks are considered. Bark is the outer layer of wood and is treated as waste in the current wood processing technologies. READ MORE

  6. 4. Green aromatics for a bio-based economy - Valorization of biomass derived model compounds over zeolites studied by online analysis

    Author : Christopher Sauer; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; online analysis; zeolite; biomass conversion; catalysis; 2; 5-dimethylfuran;

    Abstract : In the strive towards sustainable chemical production, its carbon-based products can no longer be produced from fossil resources but need to be manufactured from a renewable feedstock. Simple aromatic building blocks like benzene, toluene and xylenes (BTX) can be obtained by catalytic valorization of biomass derived platform molecules such as furans provided efficient catalysts can be formulated. READ MORE

  7. 5. Lignin-Based Thermosets with Tunable Mechanical and Morphological Properties : A Study of Structure-Property Relationships

    Author : Iuliana Ribca; Mats Johansson; Martin Lawoko; Stephan V. Roth; Mika Sipponen; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Softwood; hardwood; technical lignin; solvent fractionation; allylation; thiol-ene thermosets; thioether linkage; wide-angle X-ray scattering; π-π stacking interactions; Barrträ; lövträ; tekniskt lignin; lösningsmedelsfraktionering; allylering; tiol-en-härdplaster; tioeterbindning; vidvinkelröntgenspridning; π-π staplingsinteraktioner; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Nowadays, there is an urgent need to decrease our dependence on fossilresources and shift towards the use of renewable resources for advancingsustainable development. Utilizing renewable and bio-based raw materials,such as lignocellulosic biomass, for designing new materials is a promisingapproach to promote this objective. READ MORE