Search for dissertations about: "Furans"
Showing result 1 - 5 of 15 swedish dissertations containing the word Furans.
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1. Development of new Catalytic Methods for the Selective Synthesis of Heterocycles
University dissertation from Stockholm : Department of Organic Chemistry, Stockholm UniversityAbstract : In the field of organic chemistry, the development of new catalytic methods for the synthesis of complex molecules from simple precursors is a top priority. The main focus of this thesis concerns the diastereoselective synthesis of heterocyclic compounds using main group elements as Lewis acid catalysts. READ MORE
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2. Polybrominated dibenzo-p-dioxins and furans from source of emission to human exposure
University dissertation from Örebro : Örebro UniversityAbstract : Brominated flame retardants (BFRs), which are ubiquitous in modern life and the environment, are the major source for polybrominated dibenzo-p-dioxins and furans (PBDD/Fs). The knowledge about PBDD/Fs is lim-ited compared to other environmental pollutants, even though PBDD/Fs show similar toxicity as polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) which are considered to be among the most toxic man-made substances. READ MORE
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3. Microbial and enzymatic syntheses of polymer building blocks through selective transformations of polyols and furans
University dissertation from Department of Chemistry, Lund UniversityAbstract : AbstractTransition from fossil- to bio-based economy is a critical step towards reduction of greenhouse gas emissions and climate change, and hence for achievement of sustainable communities and environment. In order to be fossil-free, the chemical and material industry is in need of carbon-neutral building blocks from renewable resources for the diverse array of products that are currently produced from olefins and aromatics. READ MORE
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4. Ethanol from Lignocellulose - Fermentation Inhibitors, Detoxification and Genetic Engineering of Saccharomyces cerevisiae for Increased Resistance
University dissertation from Applied Microbiology (LTH)Abstract : Ethanol can be produced from lignocellulose by first hydrolysing the material to sugars, and then fermenting the hydrolysate with the yeast Saccharomyces cerevisiae. Hydrolysis using dilute sulphuric acid has advantages over other methods, however, compounds which inhibit fermentation are generated during this kind of hydrolysis. READ MORE
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5. On the combustion and photolytic degradation products of some brominated flame retardants
University dissertation from Umeå : Umeå universitetAbstract : Many modern products, especially electronic goods, are protected by brominated flame retardants (BFR). Some of the most common flame retardants are polybrominated diphenylethers (PBDE), tetrabromobisphenol-A (TBBP-A) and hexabromocyclododecane (HBCD). READ MORE
