Blar i Institutt for kjemisk prosessteknologi på tittel
Viser treff 195-214 av 1765
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Catalytic oxidation of NO to NO2 for nitric acid production over a Pt/Al2O3 catalyst
(Journal article; Peer reviewed, 2018)The oxidation of nitric oxide (NO) to nitrogen dioxide (NO2) is a key step both in NOx abatement technologies as well as in the Ostwald process for nitric acid production. A 1 wt.% Pt/Al2O3 catalyst was used to study ... -
Catalytic partial oxidation of methane at moderate temperatures
(Master thesis, 2013)Catalytic partial oxidation (CPO) is considered to be a promising route to produce synthesis gas from methane. In this work cobalt supported on CeO2−Al2O3 nanocomposites calcined at temperatures ranging from 1173 K to 1473 ... -
Catalytic partial oxidation of methane to synthetis gas
(Dr. ingeniøravhandling, 0809-103X; 2000:79, Doctoral thesis, 2000) -
Catalytic Steam Reforming of Hydrocarbon Impurities from Biomass Gasification
(Master thesis, 2021)En bærekraftig framtid fordrer avkarbonisering av energisystemene våre ved å omstille oss fra et fossilt til et fornybart samfunn. Flytende drivstoff kan produseres fra fornybar biomasse ved å kombinere gassifisering av ... -
Catalytic upgrading of Biomass derived Oxygenate on Copper based Catalysts.
(Master thesis, 2017)Renewable production of propylene glycol (PG) has great interest. This can be produced from biomass derived chemicals instead of today s production, where PG is conventionally produced from petroleum derived chemicals. Acetol, ... -
Catalytic Vapor Upgrading of Fast Hydropyrolysis Biooil with Noble Metals Supported on Metal Oxides
(Master thesis, 2022)Environmental concerns and increased energy demand, has increased the need for sustainable fuel production using renewable feedstocks. Biomass has been identified as a potential net-zero CO2 emission and abundant raw ... -
Cation Exchange Membranes and Process Optimizations in Electrodialysis for Selective Metal Separation: A Review
(Peer reviewed; Journal article, 2023)The selective separation of metal species from various sources is highly desirable in applications such as hydrometallurgy, water treatment, and energy production but also challenging. Monovalent cation exchange membranes ... -
Ce- and Y-Modified Double-Layered Hydroxides as Catalysts for Dry Reforming of Methane: On the Effect of Yttrium Promotion
(Journal article; Peer reviewed, 2019)Ce- and Y-promoted double-layered hydroxides were synthesized and tested in dry reforming of methane (CH4/CO2 = 1/1). The characterization of the catalysts was performed using X-ray fluorescence (XRF), X-ray diffraction ... -
Cellulose nanocrystal/PVA nanocomposite membranes for CO2/CH4 separation at high pressure
(Journal article; Peer reviewed, 2018)Biogas can be used as an alternative energy source in place of conventional fossil fuels. However, for this to happen, it is necessary to optimize biogas production as well as improve the biogas quality. Crystalline ... -
Cellulose Nanofibrils as Paper Additive and Coating Material: Properties, Distribution and Interaction Effects
(Doctoral theses at NTNU;2018:115, Doctoral thesis, 2018)Cellulose is well-known as the most common bio-polymer on earth. In the cell wall of most plants, it is organized in nanoscopic structures with interesting properties for a wide range of applications, among them as an ... -
Cellulose nanofibrils as rheology modifier in mayonnaise – A pilot scale demonstration
(Peer reviewed; Journal article, 2020)The applicability of cellulose nanofibrils (CNFs) as viscosifying agent in a starch-reduced low-fat mayonnaise and in an oil-reduced full-fat mayonnaise has been considered. For low-fat mayonnaise a 50 wt% reduction in the ... -
Cellulose nanofibrils as rheology modifiers and stabilizers in food systems
(Doctoral theses at NTNU;2020:291, Doctoral thesis, 2020)Food additives are components used in many food products to improve qualities such as flavor, appearance or texture. In low-fat and non-fat food products, food additives called fat-replacers are added to the food products ... -
Cellulose-based carbon hollow fiber membranes for high-pressure mixed gas separations of CO2/CH4 and CO2/N2
(Peer reviewed; Journal article, 2020)Carbonized cellulose -based hollow fiber membranes were prepared by dry-wet spinning phase inversion method, followed by carbonization and evaluated in terms of gas separation performance for CO2/N2 and CO2/CH4 mixtures, ... -
CeO2-ZrO2-WO3-based catalysts for Selective Catalytic Reduction of Nitrogen Oxides by Ammonia
(Master thesis, 2018)Cerium, zirconium and tungsten based catalysts with addition of 3% copper were prepared through the hydrothermal method and incipient wetness impregnation method. The three catalysts produced were named CZW (hydrothermal ... -
CFD Simulation of Concentration Sensor
(Master thesis, 2016)This thesis deals with the CFD modelling of a NaCl concentration sensor, specifically its pressure drop, but also velocity and pressure profile. The main goal of the work is twofold: firstly, to confirm whether the simulations ... -
Challenges Related to Analysis of Anions in Degraded Samples from Pilot and Lab Experiments
(Journal article; Peer reviewed, 2016)Analyses of degraded samples from CO2 capture experiments and pilots are complicated because of the diversity of the degradation compounds and the high amine and CO2 contents in the samples. Little work has been conducted ... -
Changing between Active Constraint Regions for Optimal Operation: Classical Advanced Control versus Model Predictive Control
(Journal article; Peer reviewed, 2018)Control structures must be properly designed and implemented to maintain optimality. The two options for the supervisory control layer are Advanced Control Structures (ACS) and Model Predictive Control (MPC). To systematically ... -
Characterisation of crude oil components, asphaltene aggregation and emulsion stability by means of near infrared spectroscopy and multivariate analysis
(Doctoral thesis, 2002)Effective separation of water-in-crude oil emulsions is a central challenge for the oil industry on the Norwegian Continental Shelf, especially with the future increase in subsea and even down-hole processing of well-fluids. ... -
Characterisation of gas-liquid interfaces related to offshore produced water treatment.: The effect of pH, brine and crude oil composition.
(Master thesis, 2013)Produced water is water co-produced with oil and gas during petroleum production. It is a very complex mixture and contains different compounds that can have negative impact on the environments. It is therefore important ... -
Characterisation of Gas-Liquid Interfaces related to Offshore Produced Water Treatment.: The Influence of Crude Oil Composition and different Brines with various pH.
(Master thesis, 2013)Produced water is an environmental toxic and complex mixture, which is co-produced during gas and oil production. The aim of this study is to investigate the surface tension of the produced water with a bubble pressure ...