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Optimising surface d charge of AuPd nanoalloy catalysts for enhanced catalytic activity
(Journal article; Peer reviewed, 2019)Understanding the catalytic mechanism of bimetallic nanocatalysts remains challenging. Here, we adopt an adsorbate mediated thermal reduction approach to yield monodispersed AuPd catalysts with continuous change of the ... -
Optimization of a Reactor Network for Production of Butyl Butyrate by an Attainable Region Analysis
(Master thesis, 2017)Butyl butyrate is a promising supplement for jet fuel and diesel. It can be produced in a biotechnological process, by an esterification reaction between butanol and butyric acid. These intermediates can in turn be produced ... -
Optimization of Co-Ni-Mg-Al mixed-oxides CO2 methanation catalysts with solution combustion synthesis: On the importance of Co incorporation and basicity
(Peer reviewed; Journal article, 2023)Hydrogenation of CO2 to methane is a promising prospect for the utilization of carbon dioxide. Ni-Mg-Al mixed oxides have been reported as a catalyst for this process. Their promotion with cobalt allows to improve Ni ... -
Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes
(Journal article; Peer reviewed, 2017)Cellulose acetate (CA) hollow fibers were spun from a CA+ Polyvinylpyrrolidone (PVP)/N-methyl-2-pyrrolidone (NMP)/H2O dope solution and regenerated by deacetylation. The complete deacetylation time of 0.5 h was found at a ... -
Optimization of Energy Storage in Buildings Based on Self-optimizing Control
(Master thesis, 2014)A steadily increasing fraction of Europe's electricity is generated by renewable and less reliable energy sources. It is therefore necessary to find smart ways to store excess energy until it is demanded. This could be ... -
Optimization of fixed-order controllers using exact gradients
(Journal article; Peer reviewed, 2018)Finding good controller settings that satisfy complex design criteria is not trivial. This is also the case for simple fixed-order controllers including the three parameter pid controller. To be rigorous, we formulate the ... -
Optimization of Heat Exchanger Networks using Aspen Energy Analyzer and SeqHENS
(Master thesis, 2019)Syntese av nettverk for varmevekslere har vært et av de mest undersøkte områdene innen prosessindustrien de siste 40 årene. I løpet av 70-tallet ble det rettet stor oppmerksomhet mot dette området på grunn av den første ... -
Optimization of heat exchanger networks using Gaussian process regression
(Master thesis, 2021)Optimal drift av varmevekslernettverk kan spare både energi og penger. Dette studiet utforsket om Gaussiske prosesser kan kontrollere ventilåpninger på et varmevekslernettverk. I praksis er det vanskelig å måle alle tingene ... -
Optimization of Operation and Remaining Lifetime of a Subsea System
(Master thesis, 2016)A model of a subsea system was developed and optimization for operation and remaining life time. For the modelling of the remaining life time the compressor efficiency was used as there is no statistical or physical model ... -
Optimization of PEG-based membranes and mixed matrix membranes for CO2 capture
(Doctoral theses at NTNU;2020:35, Doctoral thesis, 2019)Design better CO2 separation membranes for capture CO2 The elevated CO2 concentration has been widely recognized as one of the main factors leading to the increasing serious global warming. To prevent it from continuing ... -
Optimization of PVA Nano-composite Membranes in Membrane Contactor for CO2 Capture
(Master thesis, 2013)The aim of this report is to evaluate and optimize poly vinyl alcohol (PVA) composite membrane containing nanoparticles such as carbon nanotubes (CNTs), titanium dioxide or biofibers cross-linked with glutaraldehyde for ... -
Optimization of Stöber Method to Control Morphology and Enhance Stability of Amine-Functionalized Silica Coated Iron Oxide Nanoparticles
(Master thesis, 2023)Silikabelagte jernoksidnanopartikler har en bemerkelsesverdig kombinasjon av egenskaper, inkludert superparamagnetisme, utmerket stabilitet i vandige løsninger, enkel overflatefunksjonalisering og biokompatibilitet, noe ... -
Optimization of the Numerical Solution of the Population Balance Equation
(Master thesis, 2016)The population balance equation (PBE) is a frequently applied equation in the modeling of multiphase reactors. Accurate solution of the PBE is important in order to have a precise estimate of the interfacial area, which ... -
Optimized synthesis of polyacrylic acid-coated magnetic nanoparticles for high-efficiency DNA isolation and size selection
(Peer reviewed; Journal article, 2023)Solid-phase reversible immobilization (SPRI) bead technology is widely used in molecular biology for convenient DNA manipulation. However, commercial SPRI bead kits lack cost advantages and flexibility. It is, therefore, ... -
Optimizing hollow fiber membranes and membrane process for CO2 capture from shipping /maritime vessels in commercial applications
(Master thesis, 2022)Kontroll av koldioxidutsläpp och avskiljning av koldioxid har blivit en självklarhet sedan den globala uppvärmningen intensifierats. Många konventionella tekniker för Carbon capture and storage (CCS) har visat sig vara ... -
Optimizing methane recovery: Techno-economic feasibility analysis of N2-selective membranes for the enrichment of ventilation air methane
(Peer reviewed; Journal article, 2020)Utilization of the low concentration methane from coal-mining ventilation air is challenging but can significantly contribute to the mitigation of methane emissions to the atmosphere. This work focuses on the techno-economic ... -
Optimizing the Capacity of Thermal Energy Storage in Industrial Clusters
(Chapter, 2020)A key factor for energy-efficient industrial clusters is the recovery of waste heat. To this end, thermal energy storage (TES) is an appealing technology that facilitates dynamic heat integration between supplier and ... -
Optimizing the shape anisotropy of gold nanoparticles for enhanced light harvesting and photocatalytic applications
(Journal article; Peer reviewed, 2022) -
Optimum solvent concentration to lower energy demands for CO2 capture in refinery cases
(Journal article, 2022)An open-access novel low-energy solvent HS-3 has been proposed and verified in the lab scale for post-combustion CO2 capture. The HS-3 solvent consists of a tertiary amine with a strong bicarbonate former and a primary ... -
Organic Electrolytes for Thermoelectric Devices and CNT Electrode functionalization by Nitrogen-doping
(Master thesis, 2012)In this thesis a thermoelectric cell is developed. Aligned Carbon Nanotubes and aligned Nitrogen-doped Carbon Nanotubes are used as electrode materials. Ferri/Ferrocyanide and Tetrabutylammonium Nitrate (TBAN) electrolytes have ...