Essays about: "katalysator"

Showing result 16 - 20 of 84 essays containing the word katalysator.

1. 16. Model Predictive Urea Dosing Control Strategy for Heavy-Duty Diesel Vehicles

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Mathias Schmekel; [2023]
   Keywords : Model predictive control; Selective catalytic reduction; Nitrogen oxides; Modell-prediktiv reglering; Selektiv katalytisk reduktion; Kväveoxider;

   Abstract : Stricter requirements on the reduction of Nitrogen Oxides (NOx) in the emissions of heavy-duty diesel vehicles drives development for more efficient aftertreatment systems. An ammonia covered catalyst is one of the most successful technologies in reducing NOx by converting it into the harmless byproducts water and nitrogen. READ MORE

3. 17. Linking the selectivity of varying surface phases of a real palladium catalyst toward specific methane oxidation pathways with Ambient Pressure X-ray Photoelectron Spectroscopy

   University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

   Author : Ulrike Küst; [2023]
   Keywords : APXPS; catalysis; palladium; methane; Physics and Astronomy;

   Abstract : The study of heterogeneous catalysis, especially within methane oxidation, is of high importance in order to more efficiently remove unburned methane from bio-fuel exhausts. This is relevant as bio-fuel engines will replace those driven by fossil fuels in the coming decades. READ MORE

4. 18. Investigating Yttrium Ruthenate Pyrochlore as an Anodic Electrocatalyst in Proton Exchange Membrane Water Electrolysis

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Kneev Sharma; [2023]
   Keywords : ;

   Abstract : As the energy transition progresses, the demand for green storage solutions is ever-increasing. Hydrogen storage is receiving increased interest and support due to its promising sustainability and flexibility. Proton-exchange, or polymer electrolyte, membrane (PEM) electrolyzers are a key technology supporting hydrogen storage systems. READ MORE

5. 19. Michael additions utilizing transition-metal-catalysts, Scope and limitations

   University essay from Lunds universitet/Kemiska institutionen

   Author : Ruben Hansson; [2023]
   Keywords : Green chemistry; transition metal; rare earth metal; Michael addition; Yb; Zr; Hf; analytical chemistry; Chemistry;

   Abstract : The effect that organic solvents have on the environment and the intrinsic risk that come with using them should be limited. By replacing organic solvents with less harmful solvents, such as water, and with more effective catalysts can risks intrinsic to organic solvents be minimized or eliminated. READ MORE

6. 20. Characterization of NiMo catalysts with noble metal promoters

   University essay from Lunds universitet/Kemiteknik (CI)

   Author : Filip Hallböök; [2023]
   Keywords : Catalysis; Hydrodeoxygenation; TPR; NiMo-catalysts; Chemical engineering; Chemistry;

   Abstract : To be able to face the challenges brought on by climate change there is an urgent need to reduce the heavy dependence on fossil fuels. Bio-oil is one such renewable and carbon-neutral replacement that has shown promising potential. A key step in making bio-oil commercially feasible is improvements of the upgrading processes of the bio-oil. READ MORE