Sökning: "dissociation rate"

Visar resultat 26 - 30 av 110 avhandlingar innehållade orden dissociation rate.

1. 26. Transition Metal-Catalyzed Redox Reactions : A Journey from Homogeneous Ruthenium to Heterogeneous Palladium Catalysis

   Författare :Oscar Verho; Jan-Erling Bäckvall; Manfred Reetz; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; organisk kemi; Organic Chemistry;

   Sammanfattning : The first part of the thesis covers the development and utilization of electronically modified (pentaarylcyclopentadienyl)Ru-complexes in the racemization of secondary alcohols. This study revealed that the electronic properties of the substrate were the main factors dictating whether β-hydride elimination or hydride re-addition becomes the rate-determining step of the racemization process. LÄS MER

3. 27. Numerical Study of the Gas Flow and Heat Transfer during Electromagnetic Stirring and Post Combustion in EAFs

   Författare :Niloofar Arzpeyma; Pär Jönsson; Dongyuan Sheng; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EMS; EAF; post combustion; heat transfer; duct system;

   Sammanfattning : The effect of electromagnetic stirring on scrap melting and post combustion in two different electric arc furnaces (EAFs) have been studied using numerical modelling. The effect of electromagnetic stirring on melting of a piece of scrap located at the eccentric bottom tapping (EBT) region of an EAF has been studied. LÄS MER

4. 28. Development of Flourescence-based Immunosensors for Continous Carbohydrate Monotoring : Applications for Maltose and Glucose

   Författare :Henrik Engström; Sten Ohlson; Per Ola Andersson; Christopher Lowe; Högskolan i Kalmar; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Carbohydrate; Diabetes; Immunosensor; ; Glucose; Maltose; Weak affinity chromatograhpy; Kolhydrater; Glukos; Maltose; Affinitetskromatografi; Diabetes; Biochemistry; Biokemi; Bioteknik; Biotechnology;

   Sammanfattning : Weak affinity interaction of monoclonal antibodies and carbohydrate antigens can be detected and quantified by alterations in the antibodies' intrinsic tryptophan fluorescence. These weak/transient binding events have been monitored by total internal reflection fluorescence (TlRF) by facilitating the change in intrinsic tryptophan fluorescence. LÄS MER

5. 29. CO, CO2 and N2 hydrogenation reactions probed by operando x-ray photoelectron spectroscopy

   Författare :David Degerman; Anders Nilsson; Miquel Salmeron; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Operando Catalysis; Hydrogenation reactions; High-Pressure X-Ray Photoelectron Spectroscopy; Syngas; kemisk fysik; Chemical Physics;

   Sammanfattning : Catalytic reactions are essential for generating the chemical products required by the modern society. In particular, reactions related to clean energy storage and generation as well as fertilizer production are facilitated by catalysts. However, the processes are often insufficiently understood at a mechanistic level. LÄS MER

7. 30. Transition metal-catalyzed hydrogen transfer processes

   Författare :Oscar Verho; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The first part describes the synthesis of new analogues of Bäckvall’s catalyst with varying electronic properties and their application in the racemization of sec-alcohols. The racemization involves two key steps: (i) β-hydride elimination (dehydrogenation of the alcohol) and (ii) hydride re-addition to the intermediate ketone. LÄS MER