Sökning: "model catalyst"

Visar resultat 1 - 5 av 220 avhandlingar innehållade orden model catalyst.

1. 1. Oxidative Dissolution of Spent Fuel and Release of Nuclides from a Copper/Iron Canister : Model Developments and Applications

   Författare :Longcheng Liu; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; model; oxidative dissolution; spent fuel; radiolysis; release; mass transport; radionuclide; hydrogen; corrosion; canister; near field; repository; Chemical engineering; Kemiteknik;

   Sammanfattning : Three models have been developed and applied in the performance assessment of a final repository. They are based on accepted theories and experimental results for known and possible mechanisms that may dominate in the oxidative dissolution of spent fuel and the release of nuclides from a canister. LÄS MER

3. 2. Nanostructured Model Electrodes for Studies of Fuel Cell Reactions

   Författare :Björn Wickman; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Oxygen Reduction; Hydrogen Oxidation; Degradation; PEMFC; Model System; Nanofabrication; Fuel Cell; Catalyst; Electrode;

   Sammanfattning : There is currently a general need for alternative and sustainable energy systems. As part of such a system, the polymer electrolyte fuel cell (PEMFC) offers efficient and emission free energy conversion. LÄS MER

4. 3. Fundamental deactivation mechanisms of Fe-BEA as NH3-SCR catalyst - Experimental studies and kinetic modeling

   Författare :Soran Shwan; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dealumination; Hydrothermal treatment; Catalyst deactivation; NH3-SCR; Kinetic ageing model; Catalyst ageing; Fe-BEA;

   Sammanfattning : Due to globalization and an increasing transport sector the interest for more fuel efficient combustion engines operating under lean conditions has increased. The products formed during the burning process in internal combustion engines are major contributants to global air pollution, where carbon monoxide (CO), hydrocarbons (HC) and nitrogen oxides (NOX) are the major toxic components regulated in many countries. LÄS MER

5. 4. Model studies with nanofabricated and traditional supported catalysts

   Författare :Stefan Johansson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; model catalyst; catalysis; electron-beam litography; micro-reactor; PdO; nanofabrication; hysteresis;

   Sammanfattning : .... LÄS MER

7. 5. Natural Products as Leads for Pharmaceutically Active Compounds

   Författare :Pia Kahnberg; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; scaffold hopping; Catalyst; anxiety; benzodiazepine site; GABAA receptor; pharmacophore model; flavones; SAR; antifungal activity; Complex I; pterulone; Organic chemistry; Organisk kemi; Biochemical technology; Biokemisk teknik;

   Sammanfattning : In the search for new pharmaceutically active compounds, it is recognized that Nature produces structurally different compounds in a great variety. By having the compounds or extracts tested in defined systems, new drugs or more often leads (a compound that has an interesting but moderate activity) can be found. LÄS MER