Browsing NTNU Open by Author "Blekkan, Edd Anders"
Now showing items 1-20 of 31
-
Adsorption Properties of Supported Cobalt Catalysts Studied via Microcalorimetry
Martin Montoya, Julio Guillermo (Master thesis, 2012)Adsorption properties of alumina (γ-Al2O3) supported catalysts used for Fischer-Tropsch synthesis were studied using microcalorimetry for hydrogen or carbon monoxide chemisorption at 40ºC. The three catalysts investigated ... -
Carbon Formation and Catalysis in the Conversion of Methyl Chloride and Silicon into Dimethyldichlorosilane - Collaboration with Elkem - Bluestar
Tysseland, Amalie (Master thesis, 2018)The Direct Process is the most prominent method for producing dimethyldichlorosilane, and is a copper-catalyzed reaction between solid silicon and methyl-chloride gas. The process faces several complications such as the ... -
Catalytic Dehydrogenation of Propane: Oxidative and Non-Oxidative Dehydrogenation of Propane
Herauville, Virginie Marie Therese (Master thesis, 2012)The dehydrogenation of propane has a great interest, due to a global growing demand in propene. This reaction needs a catalyst, high temperature and low propane partial pressure. During this work, platinum hydrotalcite-supported ... -
Catalytic Hydrodeoxygenation of Bio-oils with Supported MoP-Catalysts
Asphaug, Sindre (Master thesis, 2013)The goal of this thesis was to test the MoP catalysts which were made during autumn 2012, in a HDO reaction of phenol to benzene at a HDO rig. The catalysts were supported by Al2O3, SiO2, TiO2 and ZrO2, and they were ... -
Chemical Quenching: EAB-1
Pylilo, Alexei (Master thesis, 2012)The main objective of the present work was to investigate the opportunity for the use of light hydrocarbons as quenching agents to quench high temperature gas streams. When light hydrocarbon, for example propane, is ... -
Deactivation of Co-Based Fischer−Tropsch Catalyst by Aerosol Deposition of Potassium Salts
Gavrilovic, Ljubisa; Brandin, Jan; Holmen, Anders; Venvik, Hilde Johnsen; Myrstad, Rune; Blekkan, Edd Anders (Journal article; Peer reviewed, 2018)A 20%Co/0.5%Re/γAl2O3 Fischer−Tropsch catalyst was poisoned by four potassium salts (KNO3, K2SO4, KCl, and K2CO3) using the aerosol deposition technique, depositing up to 3500 ppm K as solid particles. Standard characterization ... -
Dehydrogenation of propane by carbon supported metal catalysts
Ostbye Pedersen, Eirik (Master thesis, 2013)In this thesis, the catalytic properties of carbon supported Pt catalysts were investigated for the dehydrogenation of propane.Using a polyol process, Pt/Carbon catalysts active for propane dehydrogenation were successfully ... -
Dehydrogenation of propane by carbon supported metal catalysts
Østbye Pedersen, Eirik (Master thesis, 2013)In this thesis, the catalytic properties of carbon supported Pt catalysts were investigated for the dehydrogenation of propane. Using a polyol process, Pt/Carbon catalysts active for propane dehydrogenation were successfully ... -
Effect of trace potassium on hydrogen adsorption and dissociation on hcp cobalt: A density functional theory study
Chen, Qingjun; Svenum, Ingeborg-Helene; Gavrilovic, Ljubisa; Chen, De; Blekkan, Edd Anders (Journal article; Peer reviewed, 2019)Trace amounts of potassium (K) have a significant influence on the activity and selectivity of cobalt-based catalysts in Fischer–Tropsch synthesis (FTS), in which hydrogen adsorption and dissociation is one of the initial ... -
Effect of trace potassium on hydrogen adsorption and dissociation on hcp cobalt: A density functional theory study
Chen, Qingjun; Svenum, Ingeborg-Helene; Gavrilovic, Ljubisa; Chen, De; Blekkan, Edd Anders (Journal article; Peer reviewed, 2018)Trace amounts of potassium (K) have a significant influence on the activity and selectivity of cobalt-based catalysts in Fischer–Tropsch synthesis (FTS), in which hydrogen adsorption and dissociation is one of the initial ... -
Fischer-Tropsch conversion of biomass-derived synthesis gas to liquid fuels
Lillebø, Andreas Helland; Holmen, Anders; Enger, Bjørn Christian; Blekkan, Edd Anders (Journal article, 2013)Recent and ongoing research on Fischer-Tropsch catalysts for biomass conversion typically focus on the effects of impurities common in bio-derived synthesis gas, and also on the effect of different synthesis gas compositions ... -
Fischer-Tropsch synthesis – Influence of aerosol – deposited potassium salts on activity and selectivity of Co based catalysts
Gavrilović, Ljubiša (Doctoral theses at NTNU;2018:104, Doctoral thesis, 2018)The effect of potassium salts (K2SO4, KNO3, KCl, K2CO3) on cobalt based Fischer-Tropsch catalysts has been studied experimentally and theoretically. In order to better understand the deactivation effect of potassium species, ... -
Fischer-Tropsch Synthesis: Conversion of Bio-Syngas to Hydrocarbons
Jørgensen, Erik Andreas (Master thesis, 2019)Dette prosjektet omhandler Fischer-Tropsch syntese over cobolt-baserte katalysatorer. Tolv eksperimenter ble utført i en to-reaktor rigg ved en rekke reaksjonsbetingelser, med formål om å innhente eksperimentell data til ... -
Fischer-Tropsch synthesis—Investigation of the deactivation of a Co catalyst by exposure to aerosol particles of potassium salt
Gavrilovic, Ljubisa; Brandin, Jan; Holmen, Anders; Venvik, Hilde Johnsen; Myrstad, Rune; Blekkan, Edd Anders (Journal article; Peer reviewed, 2018)The influence of potassium species on a Co based Fischer-Tropsch catalyst was investigated using an aerosol deposition technique. This way of poisoning the catalyst was chosen to simulate the actual potassium behaviour ... -
Fischer–Tropsch Synthesis at High Conversions on Al2O3-Supported Co Catalysts with Different H2/CO Levels
Lillebø, Andreas Helland; Rytter, Erling; Blekkan, Edd Anders; Holmen, Anders (Journal article; Peer reviewed, 2017)Fischer-Tropsch experiments with different H2/CO ratios at high CO conversions have been carried out over an alumina-supported 20wt%Co-0.5wt%Re catalyst in a stainless steel fixed-bed reactor at 210 oC and 20 bar and with ... -
Hot gas cleaning
Kure, Milly (Master thesis, 2014)Five H2S adsorbent materials for hot gas cleaning of biomass-derived synthesis gas were prepared. Three of the new sorbents were prepared based on a novel manganese-based sorbent that uses alumina support. The new adsorbent ... -
Hydrotreating of Bio-Oils over Metal-Phosphide Catalysts
Carlsen, Christina (Master thesis, 2012)A concern over the impact of fossil fuels on the environment has made the researchers to look for more environmental options. One alternative is bio-oils produced from lignocellulosic material. However, the abundance of ... -
Large-Scale Granulation of CaO-Based Pellets for High-Temperature Carbon Dioxide Capture
Olsvik, Maria (Master thesis, 2018)Abstract Pelletized CaO-based sorbents are made for the use in Moving Bed Carbonate Looping (MBCL) technology capturing CO2 at a low partial pressure of CO2 and high temperature, producing approximately 100% pure CO2. ... -
Mn promoted Co catalysts for Fischer-Tropsch production of light olefins – An experimental and theoretical study
Pedersen, Eirik Østbye; Svenum, Ingeborg-Helene; Blekkan, Edd Anders (Journal article; Peer reviewed, 2018)Three different CoMn/gamma-Al2O3 catalysts were prepared by the incipient wetness impregnation route and compared to a Co/gamma-Al2O3 catalyst. The effect of co-impregnation vs. sequential impregnation as well as the order ... -
Mn promotion effects in Co based Fischer-Tropsch production of light olefins
Pedersen, Eirik Østbye (Doctoral theses at NTNU;2018:180, Doctoral thesis, 2018)In this work, Mn promotion of γ-Al2O3 supported Co catalysts was investigated for the purpose of producing light olefins via the Fischer-Tropsch synthesis process. CoMn/γ-Al2O3 catalysts were prepared by the incipient ...