Sökning: "multicomponent reactions"

Visar resultat 11 - 15 av 20 avhandlingar innehållade orden multicomponent reactions.

1. 11. Some applications of CALPHAD techniques to diffusion reactions in gradient materials

   Författare :Thomas Helander; KTH; []
   Nyckelord :;

   Sammanfattning : In gradient materials, i.e. materials that have varyingproperties due to an inhomogeneous chemical composition, thereis usually a strong driving force for diffusion reactions inthe gradient zone. Such reactions may have a strong influenceon the properties of the material. LÄS MER

3. 12. Modelling precipitation and surface complexation reactions in systems with Goethite, Cu(II) and Oxyanions Containing As(V) or P(V)

   Författare :Hanna Nelson; Lars Lövgren; Staffan Sjöberg; Per Persson; M. Clara F. Magalhaes; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The aqueous solubility of oxyanion (e.g. phosphates and arsenates), and thereby their mobility, bioavailability (phosphates) and toxicity (arsenates), in soils and sediments is dependent upon their chemical speciation. In complex, multicomponent systems, equilibrium modelling can be a useful tool to predict chemical speciation. LÄS MER

4. 13. Dynamic Systems: Evaluation, Screening and Synthetic Application

   Författare :Morakot Sakulsombat; Olof Ramström; Ulrich Lüning; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; constitutional dynamic chemistry; dynamic combinatorial chemistry resolution; dynamic fragment-based approach; dynamic kinetic resolution; dynamic reversible systems; 1H STD-NMR; multicomponent reaction; tandem reaction; Organic chemistry; Organisk kemi;

   Sammanfattning : The research work reported in the thesis deals with the development of dynamic covalent systems and their applications in evaluation and screening of protein-ligands and enzyme inhibitors, as well as in synthetic methodologies. The thesis is divided into four parts as described below. LÄS MER

5. 14. N-Heterocyclic Carbene Catalysis in Organic Synthesis - A Green Chemistry Approach

   Författare :Linda Ta; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; aerobic oxidation; ionic liquid; sustainability; NHC catalysis; oxidative NHC catalysis; green chemistry; OTHO; Organocatalysis;

   Sammanfattning : The twelve principles of green chemistry were created as a response to the multiple environmental issues caused by the release of waste from the chemical industry. The principles acts as a guide in the development of sustainable chemical processes for the syntheses of important molecules needed to sustain our living standards. LÄS MER

7. 15. Transformations of Nitrosoarenes and Alkynyl Enones : Selective Synthesis of Nitrogen-Containing Compounds

   Författare :Angela van der Werf; Nicklas Selander; Gary A. Molander; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; alkynyl enones; catalysis; copper; halogenation; heterocycles; nitrosoarenes; perfluoroalkylation; trifluoromethylation; organisk kemi; Organic Chemistry;

   Sammanfattning : The nitrogen atom plays a unique role in organic chemistry. It is abundantly found in organic materials and is responsible for the activity of many biologically relevant compounds. LÄS MER