Browsing Institutt for kjemisk prosessteknologi by Title
Now showing items 61-80 of 1765
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Aerosol growth in CO2 absorption with MEA, modelling and comparison with experimental results
(Peer reviewed; Journal article, 2021)A new and improved aerosol model has been developed and tested against experimental data. An e-NRTL equilibrium model for MEA was extended to cover sulphuric acid containing droplets and validated against new eboulliometer ... -
Aggregation, interfacial properties and structural characteristics of asphaltene solubility fractions
(Doktoravhandlinger ved NTNU, 1503-8181; 2007:158, Doctoral thesis, 2007)Crude oil is the primary source for energy in the world and serves as the raw material for many daily products. Two topics, important in the daily processing of crude oils, are treated in this thesis. Water-in-oil emulsions ... -
Aligned carbon nanostructures based 3D electrodes for energy storage
(Journal article; Peer reviewed, 2015)Electrochemical energy storage systems with high specific energy and power as well as long cyclic stability attract increasing attention in new energy technologies. The principles for rational design of electrodes are ... -
Aligned carbon nanotubes@ manganese oxide coaxial arrays for lithium ion batteries
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:257, Doctoral thesis, 2013)Lithium ion batteries (LIB) have attracted widespread interests due to their higher specific energy compared with nickel–cadmium batteries and lead–acid batteries. However, their specific power remains too low to power ... -
Alterations in paraffin wax crystal networks induced by asphaltenes and pour point depressants, investigated by atomic force microscopy
(Peer reviewed; Journal article, 2024)Wax crystallization in pipelines in cold environments is a key factor affecting flow assurance during crude oil production. Polar crude oil components, such as asphaltenes, and polymeric pour point depressants (PPDs) have ... -
Alumina supported cobalt catalysts for Fischer-Topsch synthesis
(Master thesis, 2012)Co supported on high surface area oxides such as alumina, silica and titania are the main catalysts for the Fischer-Tropsch synthesis. It has been shown that the catalytic performance of these catalysts depends on the ... -
Amine and amino acid absorbents for CO₂ capture
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:228, Doctoral thesis, 2011)World energy demand is on a continuous increase and fossil fuels will remain the dominant energy source for the foreseeable future. Fossil fuel combustion, however, results in greenhouse gas emissions, and in particular ... -
Amine reclaimer technologies
(Master thesis, 2010)Carbon dioxide (CO2) capture in post-combustion by the use of amines is one of several technologies known to reduce the release of CO2 to the atmosphere when burning fossil fuels.One of the problems related to the amine ... -
Amine-based carbon dioxide absorption: Evaluation of kinetic and mass transfer parameters
(Journal article; Peer reviewed, 2018)Global emission of carbon dioxide (CO2), a major contributor to the climate change, has increased annually and it reached over 37 Gt in 2017. An effort to reduce the emission, therefore, needs to be conducted, e.g. ... -
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 ... -
Amino-Functionalized Magnetic Nanoparticles for Extraction of Naphthenic Acids
(Master thesis, 2016)The present work is a part of a 2-year Post Doc project carried out by a Vista program funded by Statoil and conducted in close collaboration with The Norwegian Academy of Science and Letters. The goal of the main project ... -
Aminoalkyl-functionalized pyridines as high cyclic capacity CO2 absorbents
(Journal article; Peer reviewed, 2019)Recent years have witnessed a growing academic interest in development of new CO2 capture solvents to reduce the capture costs. This study focused on nine picolylamines (three commercial and six synthesized) and one ... -
An aggregation model reduction method for one-dimensional distributed systems
(Doktoravhandlinger ved NTNU, 1503-8181; 2009:186, Doctoral thesis, 2009)This thesis discusses a model reduction method for one-dimensional distributed systems. These systems can be spatially discretely distributed, like staged distillation columns, or spatially continuously distributed, like ... -
An Comparative Study: Model-Based vs. Noise Estimation Approach for State Estimation
(Master thesis, 2023)Denne oppgaven tar for seg en analyse av en bioprosessmodell, som omfatter en sammenlignende undersøkelse av to forskjellige estimeringsteknikker. Selve estimeringsteknikkene er foreslått av Krog & Jäschke[21] og Berry & ... -
An Experimental Study of Tetrameric Naphthenic Acids atw/o Interfaces: Reactivity, Inhibition and Emulsion Formation
(Doktoravhandlinger ved NTNU, 1503-8181, Doctoral thesis, 2009) -
An Experimental Study of the Phase Separation Phenomenon and Dewatering Technique of Pyrolysis Oil
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:60, Doctoral thesis, 2014)Fast pyrolysis is a promising technology for cost-efficient conversion of biomass into renewable liquid fuels. However, development of pyrolysis oils as a fuel is incomplete. Issues of phase separation and alteration of ... -
An investigation of fundamental phenomena affecting the performance of sputtered Pd alloy thin film membranes for hydrogen separation
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:165, Doctoral thesis, 2014)Pure hydrogen flux has been obtained for sputtered Pd77%Ag23% membranes with thickness of 2.2-11.2 μm. A general thickness dependent behaviour is observed upon permeation under hydrogen. However, permeability is not constant ... -
An ITC and NMR study of interaction and complexation of asphaltene model compounds in apolar solvent I: Self-association pattern
(Journal article; Peer reviewed, 2016)The self-association pattern of asphaltene model compounds with different functional groups in xylene and mixtures of xylene and heptane have been studied by isothermal titration calorimetry (ITC) to shed new light on the ... -
An ITC study of interaction and complexation of asphaltene model compounds in apolar solvent II: Interactions with asphaltene inhibitors
(Journal article; Peer reviewed, 2016)The interaction and complexation of asphaltene model compounds containing functional groups with other crude oil compounds in a mixture of xylene and heptane have been studied to shed new light on the association and ... -
An object-oriented framework for the optimization of flexible renewable energy systems
(Master thesis, 2021)Denne masteravhandlingen beskriver et objektorientert modelleringsrammeverk som et grens- esnitt mellom en modell av ett energisystem og den stokastiske programmeringsprogram- varen GOSSIP. Viktige usikkerheter knyttet til ...