Blar i Institutt for kjemisk prosessteknologi på tittel
Viser treff 1628-1647 av 1760
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The effect of aerosol-deposited ash components on a cobalt-based Fischer–Tropsch catalyst
(Journal article; Peer reviewed, 2019)The effect of ash salts on Co-based Fisher–Tropsch catalysts was studied using an aerosol deposition technique. The major elements in the ash were found to be K, S and Cl. The ash was deposited on a calcined catalyst as ... -
The Effect of Calcium Ions on Oil-Brine-Surfactant Interfacial Properties and the Relation to Surfactant Enhanced Oil Recovery at Low Salinity
(Doctoral thesis at NTNU;2015:228, Doctoral thesis, 2015)The present thesis addresses the effect of calcium ions on the interfacial chemistry between oil and solutions of anionic surfactants, and its relevance for enhanced oil recovery (EOR) methods at low salinity. A number ... -
The effect of calcium/sodium ratio on the dynamic adsorption of sodium dodecyl benzene sulfonate (SDBS) onto water/air interfaces. Evaluation of critical micelle concentrations, diffusion coefficients and molecular areas
(Master thesis, 2016)Test how calcium/sodium-ratio affect the dynamic adsorption of sodium dodecyl benzene sulfonate (SDBS) onto water/air interfaces where the ionic strength is kept constant at 20 mM, with the use of maximum bubble pressure ... -
The Effect of Copper Loading on Iron Carbide Formation and Surface Species in Iron‐Based Fischer–Tropsch Synthesis Catalysts
(Journal article; Peer reviewed, 2018)The effect of copper as promoter on iron carbide formation and the nature of surface species on iron‐based catalyst during Fischer–Tropsch synthesis (FTS) was investigated. Iron‐based catalysts (15 wt % of Fe) supported ... -
The effect of dissolved gas on coalescence of oil drops studied with microfluidics
(Journal article; Peer reviewed, 2018)Hypothesis In literature it is stated that the stability of oil-in-water emulsions could be enhanced by decreasing the so-called “hydrophobic interactions” between surfaces through removal of dissolved atmospheric gases. ... -
The effect of fibre wall thickness and microfibril angle on TMP energy consumption, fibre development and paper properties
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:117, Doctoral thesis, 2011)The overall objective of the “Basic phenomena in mechanical pulping” project financed by NER (the Nordic Energy Research) of which the PhD study was a part, was to show a radical reduction (30%) in specific energy consumption ... -
The Effect of Liquid Exposure on PTMSP/TiO2 Nanocomposite Membranes for Gas-Liquid Membrane Contactors for Removal of CO2 from Natural Gas
(Master thesis, 2014)This project concerns the development of membrane materials for use in gas-liquid membrane contactors for the removal of CO2 from natural gas. In this application, the membrane is primarily intended to prevent any phase ... -
The effect of MEG (mono ethyleneglycol) on the precipitation kinetics of calcium carbonate related to natural gas production from subsea wells
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:44, Doctoral thesis, 2010)Injection of inhibitors for gas hydrate formation during transportation of wet gas/condensate in pipelines strongly affects the tolerance for produced formation water. The use of mono ethylene glycol (MEG) as hydrate ... -
The Effect of Metal Promoters on Supported Cobalt Catalysts for the Fischer-Tropsch Synthesis
(Master thesis, 2021)I dette arbeidet ble effekten av forskjellige metallpromotorer på katalysatorer med 20 vekt-% kobolt for Fischer-Tropsch Syntesen (FTS) undersøkt. Metallene som ble studert var Ru, Re og Pt på Co/Al2O3 og Co/TiO2 katalysatorer, ... -
The Effect of Noble Metal Promoters on Hydrotalcite-Based Nickel-Cobalt Catalysts for Syngas Conditioning for Advanced Biofuels
(Master thesis, 2023)Konvertering av biomasse til drivstoff ved hjelp av gassifisering og Fischer-Tropsch hydrokarbonsyntese er et fremtredende og bærekraftig alternativ til drivstoffproduksjon fra fossile kilder. Imidlertid utgjør dannelse ... -
The Effect of Oil on Carbon Dioxide Corrosion Inhibition on Carbon Steel - Potential for Improved Corrosion Protection
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:20, Doctoral thesis, 2010)The search for robust and cost efficient ways to prevent internal corrosion of carbon steel piping and equipment in oil and gas production and transportation has lead to the development of highly sophisticated CO2 corrosion ... -
The Effect of Potassium on Cobalt-based Fischer-Tropsch Catalysts of Small and Medium Cobalt Particle Sizes
(Master thesis, 2018)The effect of potassium on a 20 wt.% Co - 0.5 wt.% Re/-Al2O3 catalyst consisting of small and medium cobalt particle sizes were investigated. The particle sizes were adjusted by using different mixtures of ethylene glycol ... -
The Effect of Potassium on Cobalt-Based Fischer– Tropsch Catalysts with Different Cobalt Particle Sizes
(Journal article; Peer reviewed, 2019)The effect of K on 20%Co/0.5%Re/γ-Al2O3 Fischer–Tropsch catalysts with two different cobalt particle sizes (small, in the range 6–7 nm and medium size, in the range 12–13 nm) was investigated. The catalyst with the smaller ... -
The Effect of the Absorber Design and Operating Conditions on the MEA Emissions and Energy Consumption in an Absorption-Based Carbon Capture Plant
(Master thesis, 2021)Industri er en av de største kildene til menneskeskapte utslipp av klimagasser. Absorpsjons- basert CO2-fangst er et viktig skadebegrensningstiltak for å redusere CO2 utslippene og sikre en bærekraftig fremtid. En av ... -
The Effects of Alginate Additives on Calcium Phosphate Mineralization
(Doctoral theses at NTNU;2017:231, Doctoral thesis, 2017)Nature produces a variety of highly functional composite structures by the combination of organic and inorganic constituents and these composites stand as a central source of interest and inspiration for tissue engineering ... -
The effects of pH, time and temperature on the stability and viscosity of cellulose nanocrystal (CNC) dispersions: implications for use in enhanced oil recovery
(Journal article; Peer reviewed, 2017)Cellulose nanocrystals (CNC) are currently being investigated as potential additives for enhanced oil recovery (EOR). Presented in this paper is a study investigating the effects of different physical and chemical environments ... -
The Fluid Flow Equations in General Curvilinear Coordinates solved with the SIMPLE Algorithm on a Staggered Curvilinear Grid
(Master thesis, 2021)Hovedmålet i denne mastergraden var å modellere strømningene over et bakovervendt steg ved å bruke SIMPLE algoritmen med et forskjøvet ikke-ortogonalt kurvelineært rutenett. SIMPLE ligningene ble løst i det beregnende ... -
The formation and characterization of sustainable layered films incorporating Microfibrillated Cellulose (MFC)
(Journal article; Peer reviewed, 2012)Microfibrillated cellulose (MFC), TEMPO-pretreated MFC, and hybrid polymer/MFC mix were used for the production of layered films with interesting properties for application in food packaging. The series of samples were ... -
The impact of sequential H2-CO-H2 activation treatment on the structure and performance of cobalt based catalysts for the Fischer-Tropsch synthesis
(Journal article; Peer reviewed, 2018)Different activation protocols were applied to a promoted Re/Co/γ-Al2O3 catalyst for Fischer-Tropsch synthesis. The activation included treatment in either pure H2 or a sequence of Reduction (H2) – Carburization (CO) – ... -
The Influence of Differently Shaped Gold Nanoparticles Functionalized with NIPAM-Based Hydrogels on the Release of Cytochrome C
(Journal article; Peer reviewed, 2017)Here, we report the synthesis and functionalization of five different shapes of Au nanoparticles (NPs), namely nanorods, tetrahexahedral, bipyramids, nanomakura, and spheres with PEG and poly (N-isopropylacrylamide)-acrylic ...