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Osmotic membrane pressure actuator
(Master thesis, 2011)This master thesis has focused on the membrane for the osmotic membrane pressure actuator (OMPA). The OMPA is an autonomous inflow control device for intended use in oil and gas wells. Its function is to prevent water from ... -
Overall Process Analysis and Optimisaton for CO2 Capture from Coal Fired Power Plants basen on Phase Change Solvents Forming Two Liquid Phases
(Journal article; Peer reviewed, 2013)In this work the potential of a novel post-combustion CO2 capture process is analysed with respect to the integrated overall process. As solvent a blend of two amines (DEEA/MAPA) which forms two liquid phases under CO2 ... -
Oxidation of Methanol to Formaldehyde (MTF) over Silver Catalyst
(Master thesis, 2020)Arbeidet som er utført i denne master oppgaven hadde som mål å bidra til forståelsen av metanol til formaldehyd reaksjonen, og sølv interaksjonene i disse forholdene. Sølvpartikler, nett og annulær ble behandlet i ulike ... -
Oxidation of Methanol to Formaldehyde over Ag - Kinetic Modelling of Gas Phase Reactions using COMSOL Multiphysics
(Master thesis, 2017)In this master thesis the goal was to create two COMSOL Multiphysics simulation models, one representing the laboratory scaled reactor and the other representing the industrial scale reactor, to study gas phase reactions ... -
Oxidation of methanol to formaldehyde over Ag catalyst - A study of reaction pathways and Ag catalyst restructuring during MTF
(Master thesis, 2018)Formaldehyde is recognised as an important industrial chemical, being a versatile organic molecule. Due to high reactivity, it is used as a building block to synthesise other chemicals and industrial products. Production ... -
Oxidative degradation of 2-ethanolamine: The effect of oxygen concentraton and temperature on product formation
(Journal article; Peer reviewed, 2013)Oxidative degradation experiments on 2-ethanolamine (MEA) were performed at four different oxygen concentrations and at two temperatures. MEA loss and degradation product build-up were measured. Increasing the temperature ... -
Oxidative degradation of amines using a closed batch system
(Journal article; Peer reviewed, 2013)Oxidative degradation experiments on five amines and two amino acids were performed in a new closed setup at atmospheric pressure. For most of the amines/amino acids significant degradation was not present under these ... -
Oxidative degradation of triethylene glycol
(Journal article; Peer reviewed, 2024)Triethylene glycol (TEG) is unstable in the presence of oxygen and at high temperatures, though the degradation mechanisms occurring are not properly understood. In attempting to close some of the knowledge gaps, ... -
Oxidative degradation of triethylene glycol
(Peer reviewed; Journal article, 2024)Triethylene glycol (TEG) is unstable in the presence of oxygen and at high temperatures, though the degradation mechanisms occurring are not properly understood. In attempting to close some of the knowledge gaps, ... -
Oxidative Dehydrogenation of Ethane and Propane at Short Contact Time
(Dr. ingeniøravhandling, 0809-103X; 2003:4, Doctoral thesis, 2003)Olefins are important intermediates for many industrial processes and the demand for olefins is forecasted to grow for the next years. One of the promising alternative routes for the production of olefins is oxidative ... -
Oxidative dehydrogenation of ethane at short contact times
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:188, Doctoral thesis, 2008) -
Oxygen and temperature effect on formation of degradation compounds from MEA
(Journal article; Peer reviewed, 2014)Liquid phase degradation of MEA and the formation of 8 degradation compounds were studied at 4 different oxygen concentrations and three different temperatures. Liquid phase total nitrogen was determined and compared with ... -
Oxygen Assisted Dehydrogenation of Ethane over Alumina Supported Pt-Sn Catalysts
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:376, Doctoral thesis, 2012)The oxygen-assisted dehydrogenation of ethane (ODE) over supported Pt-Sn catalysts seems to be a promising alternative for the conventional steam cracking of ethane for the production of ethylene. However, despite the fact ... -
Oxygen-assisted conversion of propane over metal and metal oxide catalysts
(Dr. ingeniøravhandling, 0809-103X; 2002:48, Doctoral thesis, 2002) -
Ozone based ECF bleaching of softwood kraft pulp
(Dr. ingeniøravhandling, 0809-103X; 2000:98, Doctoral thesis, 2000)The objective of this work was to explore fundamental aspects of utilizing (DZ) and (ZD) bleaching stages in the prebleaching of oxygen delignified Scandinavian softwood kraft pulp, and compare paper properties of fully ... -
Parameter Estimation for Breakage and Coalescence Kernels in a Population Balance Framework
(Master thesis, 2018)In this work, a zero-dimensional model in the population balance framework has been developed for an oil-in-water emulsion in a batch continuously stirred tank reactor in order to calibrate four parameters to experimental ... -
Parameter Optimization in Preparation of Membranes for Osmotic Processes (POPMOP)
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:372, Doctoral thesis, 2012)The interest in osmotically driven processes such as pressure retarded osmosis (PRO) and forward osmosis (FO) has increased during the last decade. Thus, the synthesis of new membranes specifically designed for the process ... -
Parametric Optimization of a Power and Biomass to Liquid Process
(Chapter, 2019)In this study, a power & biomass to liquid process (PBtL) is optimized with respect to nine continuous design variables. These variables have great impact on the profitability of the process. A detailed process model is ... -
Partial oxidation of methane by chemical looping
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:232, Doctoral thesis, 2011)The catalytic partial oxidation of methane has recently received a great deal of attention as a process for production of synthesis gas. In this work, the catalytic partial oxidation was carried out anaerobically, in the ... -
Partial oxidation of methanol to formaldehyde in an annular reactor
(Peer reviewed; Journal article, 2021)A structured reactor with annular configuration was applied for studying methanol oxidation to formaldehyde over silver. By eliminating gas phase reactions, high formaldehyde selectivity (93–97%) was obtained at low methanol ...