Sökning: "rhodium"

Visar resultat 1 - 5 av 59 avhandlingar innehållade ordet rhodium.

  1. 1. [11C]Carbon Monoxide in Rhodium-/Palladium-Mediated Carbonylation Reactions

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Julien Barletta; Bengt Långström; Yu-Shin Ding; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; carbonylation reaction; carbon monoxide; PET; 11C-labelling; rhodium; palladium; Organisk kemi; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Sammanfattning : Methods for the 11C-labeling of carbonyl compounds applicable in the preparation of radiotracers for Positron Emission Tomography (PET) are described. To this end [11C]carbon monoxide at low concentration was used in transition metal- mediated reactions. LÄS MER

  2. 2. Polymer Bound Water-Soluble Metal Phosphine Complexes-Preparation, Characterisation and Catalytic Application

    Detta är en avhandling från Torsten Malmström. Inorganic chemistry 1, Chemical Center, Box 124, Lund University, 22100 Lund, Sweden

    Författare :Torsten Malmström; [1998]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; enantioselective; SAP; hydrogenation; hydroformylation; catalysis; biphasic; rhodium; poly-ethylene imine; poly-acrylic acid; polymers; water-soluble; phosphines; Inorganic chemistry; Oorganisk kemi;

    Sammanfattning : Four new water-soluble phosphines have been prepared by utilising water-soluble polymers as charge carrying units. Coupling of methyl-4-(diphenylphosphino)-benzyl-amine or 4-diphenylphosphino benzaldehyde to poly-acrylic acid and poly-ethylene imine, respectively, afford the ligands PAA-PNH and PEI-PNH. LÄS MER

  3. 3. Impact of Secondary Interactions in Asymmetric Catalysis

    Detta är en avhandling från Stockholm : KTH

    Författare :Anders Frölander; Christina Moberg; Gerard van Koten; [2007]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; asymmetric catalysis; secondary interaction; hydrogen bond; chiral ligand; allylic alkylation; hydrosilylation; cyanation; pymox; box; PHOX; pybox; palladium; iridium; rhodium; Lewis acid; Lewis base; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Sammanfattning : This thesis deals with secondary interactions in asymmetric catalysis and their impact on the outcome of catalytic reactions.The first part revolves around the metal-catalyzed asymmetric allylic alkylation reaction and how interactions within the catalyst affect the stereochemistry. LÄS MER

  4. 4. Development of methane oxidation catalysts for different gas turbine combustor concepts

    Detta är en avhandling från Stockholm : KTH

    Författare :Sara Eriksson; Magali Boutonnet; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; catalytic combustion; methane oxidation; ceria; palladium; platinum; rhodium; TPO; Kemiteknik; TECHNOLOGY Chemical engineering; TEKNIKVETENSKAP Kemiteknik;

    Sammanfattning : Due to continuously stricter regulations regarding emissions from power generation processes, development of existing gas turbine combustors is essential. A promising alternative to conventional flame combustion in gas turbines is catalytic combustion, which can result in ultra low emission levels of NOx, CO and unburned hydrocarbons. LÄS MER

  5. 5. Self-adaptable catalysts Importance of flexibility and applications in asymmetric catalysis

    Detta är en avhandling från Stockholm : KTH

    Författare :Ester Fjellander; Christina Moberg; Jay Siegel; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; adaptable; flexible; semi-flexible; symmetry; conformational study; mechanistic study; rotation barrier; VT NMR; asymmetric catalysis; ligand design; allylic alkylation; hydrogenation; azepines; dioxaphosphepines; phosphepines; amines; phosphines; phosphoramidites; phosphinites; palladium; rhodium; NATURAL SCIENCES Chemistry Organic chemistry; NATURVETENSKAP Kemi Organisk kemi;

    Sammanfattning : The topic of this thesis is the design and synthesis of biaryl-based self adaptableligands for asymmetric metal catalysis. The results discussed in papers I-III are covered, together with some unpublished results concerning substrate-adaptable catalysts. A general survey of self-adaptable catalysts is presented first. LÄS MER