Blar i Institutt for kjemisk prosessteknologi på tittel
Viser treff 1260-1279 av 1771
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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 ... -
Particle Size Control for Functionalization of Iron Oxide Nanoparticles with Potential Applications in Diagnostics
(Master thesis, 2022)Liten gjennomsnittlig diameter sammen med smal partikkelstørrelsesfordeling er nødvendig for å gi en tilfredsstillende magnetisk metningsytelse av jernoksid nanopartikler for diagnostiske anvendelser. Bruken av polyvinylpyrrolidon ... -
Partitioning of surfactants between the water and oil phases and relations to enhanced oil recovery methods
(Master thesis, 2014)The focus in this master thesis has been to investigate how a varying Ca2+/Na+ mole fraction affects the interfacial tension of a surfactant/brine - dodecane/toluene interface. It has also been investigated how the same ... -
Pd3Ag(111) as a Model System for Hydrogen Separation Membranes: Combined Effects of CO Adsorption and Surface Termination on the Activation of Molecular Hydrogen
(Peer reviewed; Journal article, 2020)The co-adsorption of hydrogen and carbon monoxide on Pd3Ag(111) alloy surfaces has been studied as a model system for Pd-Ag alloys in membrane and catalysis applications using periodic density functional theory calculations ... -
Pd3Ag(111) as a Model System for Hydrogen Separation Membranes: Combined Effects of CO Adsorption and Surface Termination on the Activation of Molecular Hydrogen
(Peer reviewed; Journal article, 2020)The co-adsorption of hydrogen and carbon monoxide on Pd3Ag(111) alloy surfaces has been studied as a model system for Pd-Ag alloys in membrane and catalysis applications using periodic density functional theory calculations ... -
Pebax/PEG Grafted CNT Hybrid Membranes for Enhanced CO2/N2 Separation
(Peer reviewed; Journal article, 2019)In the present study, poly(ethylene glycol) (PEG) functionalized carbon nanotubes (CNT-PEG) were used as nanoadditives to fabricate hybrid membranes for enhanced CO2 separation in Pebax 1657 matrix. The resultant membranes ... -
Performance and Robustness of Smith Predictor Control and Comparison with PID Control
(Master thesis, 2013)The performance and robustness of the Smith predictor controller has been tested for first and second order processes with time-delay by comparing with PI and PID control. It was assumed that the performance would obviously ... -
Performance assessment of a packed bed microstructured reactor - heat exchanger for methanol synthesis from syngas
(Doktoravhandlinger ved NTNU, 1503-8181; 2010:205, Doctoral thesis, 2010)About 25% of the world’s proven natural gas reserves are located offshore with no present economic feasibility to be produced, shipped and sold. Utilization of these resources calls for developing new technologies, which ... -
Performance Investigation of Membranes Suitable for Osmotic Membrane Pressure Actuators
(Master thesis, 2014)Polybenzimidazole (PBI) membrane performance having hydrocarbons mixed with the feed water was investigated. Forward osmosis (FO) and pressure retarded osmosis (PRO) experiments were performed with different ratios of ...