Search for dissertations about: "nickel"

Showing result 16 - 20 of 433 swedish dissertations containing the word nickel.

  2. 16. Unsymmetric PCN Pincer Palladium and Nickel Complexes : Synthesis, Characterization and Reactivity

    Author : Abdelrazek Mousa; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Unsymmetric PCN; Palladium; Nickel; Cyclometallation; Carboxylation; Cross-coupling;

    Abstract : New palladium and nickel complexes based on unsymmetric PCN pincer ligands have been synthesized and fully characterized using different techniques. The substituents on the nitrogen side arm of the ligand have great influence on the cyclometallation and the reactivity of the new complexes particularly in case of nickel. READ MORE

  4. 17. Nickel and iridium pincer complexes with saturated frameworks - synthesis and reactivity

    Author : Klara Jonasson; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; PCP complexes; aliphatic pincer ligands; coordination; cyclometallation; iridium; nickel; organometallic synthesis; CO2 activation; catalysis;

    Abstract : As the tridentate chelate complexes referred to as pincer complexes have expanded their scope as homogeneous catalysts, there is an increased interest in electronic and steric fine-tuning of such complexes. One accessible variable in this aspect is the hybridisation of any coordinated carbon atoms. READ MORE

  5. 18. Deactivation of cobalt and nickel catalysts in Fischer-Tropsch synthesis and methanation

    Author : Javier Barrientos; Magali Boutonnet; Claude Mirodatos; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; cobalt; nickel; Fischer-Tropsch synthesis; methanation; deactivation; carbonyl; sintering; carbon fomation. sulfur; poisoning; Chemical Engineering; Kemiteknik;

    Abstract :             A potential route for converting different carbon sources (coal, natural gas and biomass) into synthetic fuels is the transformation of these raw materials into synthesis gas (CO and H2), followed by a catalytic step which converts this gas into the desired fuels. The present thesis has focused on two catalytic steps: Fischer-Tropsch synthesis (FTS) and methanation. READ MORE

  6. 19. Contacts on Silicon Carbide by Use of Nickel and Tantalum ---Preparation and Characterisation

    Author : Yu Cao; Chalmers tekniska högskola; []
    Keywords : Keywords: Silicon Carbide; Metal Contact; Thin Films; Preferential Etching; Interfacial Reaction; effect; Nickel; Tantalum; #955; Depth Profile; I-V Characteristics.;

    Abstract : Silicon carbide (SiC) is one of the attractive semiconductors due to its good electrical, thermal and mechanical properties. It is a promising material for high temperature, high power and high frequency application. Reliable electrodes are always necessary to utilise SiC for electronic devices. READ MORE

  7. 20. Catalytic partial oxidation of methane over nickel and ruthenium based catalysts for GTL applications

    Author : Jorge A. Velasco; Magali Boutonnet; Sven Järås; Henrik Kusar; Stan Kolaczkowski; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Catalytic partial oxidation; carbon formation; GTL; nickel; ruthenium; synthesis gas; thermodynamic equilibrium.; Chemical Engineering; Kemiteknik;

    Abstract : The Gas to Liquids (GTL) process is an important alternative for monetizing natural gas through the production of long-chain liquid hydrocarbons, e.g. diesel fuel. READ MORE