Institutt for kjemisk prosessteknologi
Recent Submissions
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The role of H2S addition on Pt/Al2O3 catalyzed propane dehydrogenation: a mechanistic study
(Journal article; Peer reviewed, 2019)Introducing sulfur species into Pt catalysts has been proven to be an effective method to improve their performance in various reactions. However, the role of sulfur addition on Pt catalysts catalyzing propane dehydrogenation ... -
Boosting carbon efficiency of the biomass to liquid process with hydrogen from power: The effect of H2/CO ratio to the Fischer-Tropsch reactors on the production and power consumption
(Journal article; Peer reviewed, 2019)Carbon efficiency of a biomass to liquid process can be increased from ca. 30 to more than 90% by adding hydrogen generated from renewable power. The main reason is that in order to increase the H2/CO ratio after gasification ... -
Uncalcined TS‐2 immobilized Au nanoparticles as a bifunctional catalyst to boost direct propylene epoxidation with H2 and O2
(Journal article; Peer reviewed, 2019)Developing stable yet efficient Au–Ti bifunctional catalysts is important but challenging for direct propylene epoxidation with H2 and O2. This work describes a novel strategy of employing uncalcined titanium silicalite‐2 ... -
Vapor Liquid Equilibrium Measurements of Two Promising Tertiary Amines for CO2 Capture
(Journal article; Peer reviewed, 2019)Post combustion CO2 capture is still a rather energy intense, and therefore expensive, process. Much of the current research for reducing the process energy requirements is focused on the regeneration section. A good ... -
Degradative behavior and toxicity of alkylated imidazoles
(Journal article; Peer reviewed, 2020)The thermal and oxidative degradation behavior and the corrosiveness of imidazole (Im), 2-methylimidazole (2MIm), 2-ethyl-4-methylimidazole (2E4MIm), 2,4,5-trimethylimidazole (2,4,5MIm), and 1,2,4,5-tetramethylimidazole ... -
Atomically dispersed Fe-N-P-C complex electrocatalysts for superior oxygen reduction
(Journal article; Peer reviewed, 2019)Development of cost-effective electrocatalysts as an alternative to platinum for oxygen reduction reaction (ORR) is of great significance for boosting the applications of green energy devices such as fuel cells and metal-air ... -
Amino-functionalized iron oxide nanoparticles designed for adsorption of naphthenic acids
(Journal article; Peer reviewed, 2019)Amino-functionalized silica-coated iron oxide (Fe3O4/SiO2 NH2/C18) magnetic nanoparticles were synthesized, and amino-surface modification was performed with a high-pressure autoclave experiment and newly developed reflux ... -
Density and Viscosity for the Non-aqueous and Aqueous Mixtures of Methyldiethanolamine and Monoethylene Glycol at Temperatures from 283.15 K to 353.15 K
(Journal article; Peer reviewed, 2020)Nonaqueous and aqueous mixtures of methyldiethanolamine and monoethylene glycol form promising absorbents for the combined hydrogen sulfide removal and hydrate control, necessary in natural gas processing. In this direction, ... -
Interaction of hydrogen with flat (0001) and corrugated (11–20) and (10–12) cobalt surfaces: Insights from experiment and theory
(Journal article; Peer reviewed, 2019)Cobalt catalysts are used on a commercial scale to produce synthetic fuels via the Fischer-Tropsch synthesis process. As adsorbed hydrogen atoms are involved in many of the elementary reaction steps that occur on the ... -
High-Capacity Amine-Imidazole Solvent Blends for CO2 Capture
(Journal article; Peer reviewed, 2019)The CO2 absorption performance of aqueous solvent blends containing four imidazoles (2-MeIm, 2-Et-4-MeIm, 2,4,5-MeIm and 1,2,4,5-MeIm) and four promoters (MEA, DEA, PZ, and MAPA) were investigated using a small-scale ... -
Colloid chemistry and experimental techniques for understanding fundamental behaviour of produced water in oil and gas production
(Journal article; Peer reviewed, 2020)Due to increasing volumes of produced water and environmental concerns related to its discharge, water treatment has become a major challenge during the production of crude oil and natural gas. With continuously stricter ... -
Microfluidic Investigation of Crude Oil Droplet Coalescence: Effect of Oil/Water Composition and Droplet Aging
(Journal article; Peer reviewed, 2020)The coalescence between crude oil droplets is a major factor influencing the efficiency of most produced water treatment processes. As the droplets grow bigger in size, it is easier to remove them from the continuous water ... -
A Primal decomposition algorithm for distributed multistage scenario model predictive control
(Journal article; Peer reviewed, 2019)This paper proposes a primal decomposition algorithm for efficient computation of multistage scenario model predictive control, where the future evolution of uncertainty is represented by a scenario tree. This often results ... -
PVA/PVP blend polymer matrix for hosting carriers in facilitated transport membranes: Synergistic enhancement of CO2 separation performance
(Journal article; Peer reviewed, 2019)CO2 separation performance in facilitated transport membranes has been reported depended not only on the CO2 carrier properties but also to a great extent on the polymeric matrix regarding the capacity of retaining water ... -
Precipitation of silver particles with controlled morphologies from aqueous solutions
(Journal article; Peer reviewed, 2019)Synthesis of silver particles with controlled morphologies enables their use in a variety of applications. Although several synthetic approaches have been developed to successfully modify the final particle shape, the ... -
Effect of trace potassium on hydrogen adsorption and dissociation on hcp cobalt: A density functional theory study
(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 ... -
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 ... -
Model-aided catalyst prediction through descriptor-based hybrid semi-empirical approach
(Doctoral theses at NTNU;2019:67, Doctoral thesis, 2019)Model-aided catalyst prediction through descriptor-based hybrid semi-empirical approach Microkinetic model aided catalyst prediction is an advanced method for developing improved and novel catalysts without intensive ... -
Mineral scaling in natural gas processing – a classical crystallization phenomenon
(Doctoral theses at NTNU;2019:72, Doctoral thesis, 2019)Summary of thesis: Scaling is the formation of mineral deposits on surfaces. During petroleum production, these crystalline layers can affect surfaces everywhere from the well to production equipment onshore. When the ... -
Incorporation of an ionic liquid into a midblock-sulfonated multiblock polymer for CO2 capture
(Journal article; Peer reviewed, 2019)In the present work, hybrid block ionomer/ionic liquid (IL) membranes containing up to 40 wt% IL are prepared by incorporating 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim][BF4]) into a midblock-sulfonated pentablock ...
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