Search for dissertations about: "solvent free oxidation"

Showing result 1 - 5 of 13 swedish dissertations containing the words solvent free oxidation.

2. 1. Creating Optical Activity: Total Spontaneous Resolution and Viedma Ripening

   Author : Per Martin Björemark; Göteborgs universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Optical activity; absolute asymmetric synthesis; total spontaneous resolution; Viedma ripening; grinding; chirality; conglomerate; coordination compound; coordination polymer; single crystal X-ray diffraction; solvent free oxidation; nantioselective sulfide oxidation; solid state VCD;

   Abstract : The creation of optical activity has been considered as something impossible even though reports of such creation via total spontaneous resolution since the 1940´s have been published. More recently Viedma ripening have been developed that also produce enantiopure bulk product. Both methods are examples of absolute asymmetric synthesis i.e. READ MORE

4. 2. Computational Studies on Homogeneous Water Oxidation Catalysts

   Author : Ge Li; Mårten S. G. Ahlquist; Moyses Araujo; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Computational studies; homogeneous; water oxidation catalysts; ruthenium; iron; mechanisms; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

   Abstract : To combat the increasing energy demand and climate change, artificial photosynthesis is a promising approach to producing renewables by storing energy into chemicals and fuels. Water oxidation, responsible for offering electrons and protons to the reduction reactions, suffers from slow kinetics. READ MORE

5. 3. Fluorine-Free Phosphorus-Based Ionic Materials and Electrolytes

   Author : Yanqi Xu; Faiz Ullah Shah; Patrik Johansson; Jonas Örtegren; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fluorine-free electrolytes; Physiochemical properties; Nuclear magnetic resonance; Ion interactions; Single crystal structures; Chemistry of Interfaces; Gränsytors kemi;

   Abstract : Due to the successful commercialization of lithium-ion batteries (LIBs), there is a growing interest in developing new battery materials with beneficial electrochemical properties. However, the uneven distribution of lithium resources and the low abundance of lithium in the earth crust are the main obstacles for further development and large-scale production of LIBs. READ MORE

6. 4. Fatty acid methyl esters as reactive diluents in solvent-borne thermally cured coil-coatings

   Author : Katarina Johansson; Mats Johansson; Mats Jonsson; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fatty acids; Reactive diluents; Coatings; Thermal curing; Transesterification; Film properties; Polymer chemistry; Polymerkemi;

   Abstract : This work describes how a fatty acid methyl ester (FAME) derived from a vegetable oil can be introduced as reactive diluent in a solvent-borne thermally cured coil-coating system. The evaluated reactive diluent, rape seed methyl ester (RME), has been evaluated both in a fully formulated clear coat system and via model studies. READ MORE

7. 5. Microbial and enzymatic syntheses of polymer building blocks through selective transformations of polyols and furans

   Author : Mahmoud Sayed Ali Sayed; Bioteknik; []
   Keywords : Mycobacterium sp. MS1601; G. oxydans; oxidase; lipase; trimethylolpropane TMP ; 2; 2- bis hydroxymethyl butyric acid BHMB ; 5-hydroxymethyl furfural 5-HMF ; 5-hydroxymethyl-2-furan carboxylic acid HMFCA ; 2; 5-furandicarboxylic acid FDCA ; cyclic carbonate ; estrification; Biotransformation; polymer building blocks; product recovery; selective oxidation; bioprocess engneering; cell recycling; cell bleeding; DNA recombinant technology; in-silico analysis;

   Abstract : 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