• Effects of Supersaturation Build-Up on the Crystal Properties and Filtration Performance of an Aromatic Amine 

  Ådnebergli, Ida (Master thesis, 2021)

  Produksjonen av aktive farmasøytiske ingredienser i farmasøytisk industri oppnås ofte ved krystallisering og påfølgende filtreringsprosess, der filtreringsprosessen vanligvis blir ansett som den viktigste prosessflaskehalsen. ...

• Effect of Rh on Pd-based Three-Way Catalyst for Promotion of CH4 Steam Reforming under O2 Dithering Conditions 

  Jacobsen, Vilde Vinnes (Master thesis, 2021)

  I løpet av de siste årene har interessen for naturgass (NG, ~ 80 % CH4) som et alternativt drivstoff økt da dens forbrenning fører til lavere CO2- og partikkelutslipp sammenlignet med de tradisjonelle drivstoffene. ...

• Aerosol growth in CO2 absorption with MEA, modelling and comparison with experimental results 

  Svendsen, Hallvard Fjøsne; Majeed, Hammad; Knuutila, Hanna K; Hillestad, Magne; Evjen, Sigvart; Mejdell, T.; Einbu, A.; Hjarbo, Kai Wilhelm; Haugen, G.; Hoff, K.A. (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 ...

• Dynamic model and Optimization of Recirculating Aquaculture System 

  Khanh, Hoang Dam (Master thesis, 2021)

  Abstract will be available on 2024-06-30

• Synthesis and design strategies of CuCr-layered double hydroxides for improved photocatalytic nitrogen fixation under visible light 

  Miró i Rovira, Albert (Master thesis, 2021)

  Ammonia is one of the most important chemical commodities in the world. The synthesis of this substance currently relies on the Haber Bosch process, which is a very energy-intensive process. Due to its importance and ...

• Application of artificial neural networks and control for recirculating aquaculture systems 

  Karlsen, Espen (Master thesis, 2021)

  En dynamisk model av et resirkulerende akvakultursystem(RAS) er implementert i Python. Enkel loop PID kontrollstrukturer etter Skogestads (2001) innstillingsregler er utviklet basert på den dynamiske modellen for kontroll ...

• Screening of Molybdenum, Iron and Phosphorus based catalysts for hydrodeoxygenation of Simulated bio-oil as a model liquid product from fast pyrolysis 

  Gosbert Mboyerwa, Leo (Master thesis, 2021)

  Nine different catalysts were tested for hydrodeoxygenation (HDO) of simulated bio-oil which is comprised of a mixture of distill water, acetic- acid, acetol, furfural, phenol, guaiacol and eugenol. The tested catalysts ...

• Model Predictive Control for a De-oiling Hydrocyclone: A Theoretical and Experimental Study 

  Gaudernack, Amund Egeland (Master thesis, 2021)

  Utslipp av produsert vann er en voksende bekymring på grunn av den negative miljøpåvirkningen. En potensiell løsning er de-oiling hydrosykloner, som er den mest brukte teknologien for å rense produsert vann. Compact Separator ...

• Properties of Dense Barite Sediments from Water-Based Drilling Fluids Oscillatory Viscosity Measurements of Wet Barite Powder 

  Werner, Benjamin; Pedrosa, Camilo; Skorpa, Ragnhild; Ytrehus, Jan David; Vrålstad, Torbjørn; Saasen, Arild (Journal article; Peer reviewed, 2021)

• Modelling Solvent Degradation in Amine-based Post-combustion Carbon Capture 

  Lille-Mæhlum, Øyvind Vilfred Haugberg (Master thesis, 2021)

  Aminbasert karbonfangst er en teknologi som kan redusere de stadig større menneskeligskapte CO2-utslippene. Det er likevel to problemer med denne teknologien. For det første vil løsningsmiddelet som brukes for å reagere ...

• Unraveling Enhanced Activity, Selectivity, and Coke Resistance of Pt–Ni Bimetallic Clusters in Dry Reforming 

  Niu, Juntian; Wang, Yalan; Liland, Shirley Elisabeth Sjø; Regli, Samuel K.; Yang, Jia; Rout, Kumar Ranjan; Luo, Jun; Rønning, Magnus; Ran, Jingyu; Chen, De (Journal article; Peer reviewed, 2021)

  By introducing Pt atoms into the surface of reduced hydrotalcite (HT)-derived nickel (Ni/HT) catalysts by redox reaction, we synthesized an enhanced active and stable Ni-based catalyst for methane dry reforming reaction. ...

• Comparison of Fresh and Spent Pd/Al2O3 Catalysts for Low Temperature Selective Hydrogenation 

  Værnes, Erlend Skjørstad (Master thesis, 2021)

  Karakterisering av to kommersielle Pd/γ-Al2O3 katalysatorer med ulik dispersjon var utført før og etter aktivitetstester. Aktivitetstestene innebar selektiv hydrogenering av et nitroarenderivat for å danne et korresponderende ...

• Solvent Regeneration by Thermopervaporation in Subsea Natural Gas Dehydration: An Experimental and Simulation Study 

  Ahmadi, Mahdi; Ansaloni, Luca; Hillestad, Magne; Deng, Liyuan (Peer reviewed; Journal article, 2021)

  An in-house designed membrane process suitable for subsea natural gas dehydration was studied. The use of a membrane absorber together with a thermopervaporation (TPV) unit for solvent regeneration in a closed loop enables ...

• Tandem hydrodeoxygenation catalyst system for hydrocarbons production from simulated bio-oil: Effect of C-C coupling catalysts 

  Yeboah, Isaac; Li, Yahao; Rajendran, Kishore; Rout, Kumar Ranjan; Chen, De (Peer reviewed; Journal article, 2021)

  Research in the sustainable conversion of biomass to fuels and chemicals is a necessity for the reduction of the carbon footprint in transport energy. Herein, we demonstrate an efficient tandem catalyst to selectively ...

• Zirconia-Supported Catalysts for Oxidation of NO to NO2 in the Production of Nitric Acid 

  Vold, Sunniva (Master thesis, 2021)

  Salpetersyre er et viktig kjemisk produkt som hovedsakelig blir brukt til å produsere kunstgjødsel av nitrater. Den industrielle prosessen for framstilling av salpetersyre foregår i tre hovedtrinn, kald Ostwaldprosessen. ...

• Study of Particle Sizes and Morphologies of Silica Coated Iron Oxide Nanoparticles Synthesized via a Semi-Batch Process 

  Nissen-Sollie, Hanne T. (Master thesis, 2021)

  Jernoksid nanopartikler har vekket mye oppmerksomhet den siste tiden pa ̊ grunn av dere fremragende egenskaper som superparamagnetisme og høyt forhold mellom overflateareal og volum. Partiklene er anvendt i forskjellige ...

• The Impact of Operating Parameters on the Gas-Phase Sulfur Concentration after High Temperature Sulfur Sorption on a Supported Mo-Mn Sorbent 

  Ma, Jianyu; Mahmoodinia, Mehdi; Rout, Kumar Ranjan; Blekkan, Edd Anders (Journal article; Peer reviewed, 2021)

  The impact of operating parameters on H2S capture from a syngas mixture by a Mo-promoted Mn-based high-temperature sorbent was investigated. The parameters investigated included temperature, space velocity, H2S concentration ...

• Improved lifetime and stability of copper species in hierarchical, copper-incorporated CuSAPO-34 verified by catalytic model reactions 

  Sørli, Guro; Azim, Muhammad Mohsin; Rønning, Magnus; Mathisen, Karina (Peer reviewed; Journal article, 2021)

  The first successful synthesis of hierarchical CuSAPO-34 (3.9 wt% Cu) is reported using the polymer Pluronic F127 as a mesoporous structure directing agent (SDA). X-Ray absorption spectroscopy (XAS) revealed single site ...

• Experimental Investigations of Single Oil Droplet Breakage in a Turbulent Water Flow 

  Herø, Eirik Helno (Doctoral theses at NTNU;2021:340, Doctoral thesis, 2021)

  Multiphase flow and the transient behavior of the dispersed phase is important to numerous industrial applications. Predictive modeling of the dispersed phase would be beneficial in designing, for example, phase separation ...

• Carbon Formation Mechanisms on Co Surfaces: A DFT Study 

  Jacobsen, Ida Emilie Malde (Master thesis, 2021)

  Fisher-Tropsch syntesen (FTS) er en katalytisk prosess hvor syngas omdannes til vann og hydrokarboner som for eksempel lange kjeder av alkaner, alkener og oksygenater. Interessen for FTS har økt på grunn av den økende ...

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