Browsing Institutt for kjemisk prosessteknologi by Title
Now showing items 1717-1736 of 1783
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Tuning the Electronic Properties of Single-Atom Pt Catalysts by Functionalization of the Carbon Support Material
(Journal article; Peer reviewed, 2017)When using support materials in heterogeneous catalysis, a fundamental understanding of the interactions between the catalyst and the support material is of critical importance. In this work, the stability, electronic ... -
Turbulent channel flow of generalized Newtonian fluids at a low Reynolds number
(Peer reviewed; Journal article, 2021)Several studies concerning the turbulent pipe flow of generalized Newtonian (GN) fluids may be found in the literature, but not for channel flow, although that has been extensively studied for other types of non-Newtonian ... -
Turbulent flows of generalized Newtonian fluids: mechanics and structural coherence
(Doctoral theses at NTNU;2022:276, Doctoral thesis, 2022)Most flows are turbulent in nature, yet fluids exhibit a plethora of inherent responses to applied stress. Fluids that respond in a linear manner, such as water and air, are labelled as Newtonian, whereas the majority of ... -
Two-capillary viscometer for temperatures and pressures relevant to CO2 capture, transport, and storage—operation and improved analysis at high pressure
(Journal article; Peer reviewed, 2024)Two-capillary viscometer for temperatures and pressures relevant to CO2 capture, transport, and storage—operation and improved analysis at high pressure -
A two-capillary viscometer for temperatures up to 473 K and pressures up to 100 MPa—operation and verification at low pressure
(Journal article; Peer reviewed, 2024)In this paper, we described the design and construction of a new two-capillary viscometer with several novel technical solutions for viscosity and density measurements. Our design, which is based on the low-pressure ... -
Two-stage membrane cascades for post-combustion CO<inf>2</inf> capture using facilitated transport membranes: Importance on sequence of membrane types
(Peer reviewed; Journal article, 2022)The use of membrane module performance data obtained in industrially-relevant environment as the basis in process simulation can lead to a more realistic prediction of a CO2 capture system. In this work, we report the use ... -
Ultrathin hybrid facilitated transport membranes for CO2 separation
(Master thesis, 2019) -
Uncalcined TS‐2 immobilized Au nanoparticles as a bifunctional catalyst to boost direct propylene epoxidation with H2 and O2
(Journal article; Peer reviewed, 2019)Developing stable yet efficient Au–Ti bifunctional catalysts is important but challenging for direct propylene epoxidation with H2 and O2. This work describes a novel strategy of employing uncalcined titanium silicalite‐2 ... -
Uncertainty analysis in the techno-economic assessment of CO2 capture and storage technologies. Critical review and guidelines for use
(Peer reviewed; Journal article, 2020)Uncertainty analysis is a key element of sound techno-economic analysis (TEA) of CO2 Capture and Storage (CCS) technologies and systems, and in the communication of TEA results. Many CCS technologies are relatively novel, ... -
Uncertainty Analysis of Computational Models and Tools for CO2 Capture Processes
(Doctoral theses at NTNU;2024:242, Doctoral thesis, 2024)Advanced capabilities of the modeling and simulation tools has been a major contributor in the research and development of the solvent-based post combustion CO2 capture process. Physical and chemical properties characterizing ... -
Understanding Carbamate Formation Reaction Thermochemistry of Amino Acids as Solvents for Postcombustion CO2 Capture
(Journal article; Peer reviewed, 2019)The carbamate stability constant for a data set of 10 amino acids, having potential for being postcombustion CO2 capture (PCC) solvents, has been calculated using various implicit and explicit solvation shell models. This ... -
Understanding Catalysis—A Simplified Simulation of Catalytic Reactors for CO2 Reduction
(Journal article; Peer reviewed, 2020) -
Understanding effects of Ni particle size on steam methane reforming activity by combined experimental and theoretical analysis
(Journal article, 2019)Fundamental understanding of the size-dependent activity is essential to harness powers of the nanocatalysts. Here we report an experimental and theoretical study of the Ni particle size effect on activity of steam methane ... -
Understanding of K and Mg co-promoter effect in ethylene oxychlorination by operando UV–vis-NIR spectroscopy
(Peer reviewed; Journal article, 2020)The comprehensive kinetic study for CuCl2/γ-Al2O3-based catalysts was performed to elucidate the co-promoter effect in the ethylene oxychlorination, one of the most significant industrial processes to produce vinyl chloride ... -
Understanding precipitation in amino acid salt systems at process conditions
(Journal article; Peer reviewed, 2013)Rapid screening experiment has been used to acquire first-hand information on the precipitation characteristics of 14 aqueous amino acid salt systems. Absorption tests at 40o C have shown that at high concentrations, amino ... -
Understanding Selectivity in CO2 Hydrogenation to Methanol for MoP Nanoparticle Catalysts Using In Situ Techniques
(Peer reviewed; Journal article, 2021)Molybdenum phosphide (MoP) catalyzes the hydrogenation of CO, CO2 , and their mixtures to methanol, and it is investigated as a high-activity catalyst that overcomes deactivation issues (e.g., formate poisoning) faced by ... -
Understanding the Effect of Asphaltenes and Wax Inhibitors on Wax Crystallization by Improved NMR Techniques
(Journal article; Peer reviewed, 2023)Wax crystallization represents one of the main factors impacting flow assurance during oil production. Pour point depressants (PPDs) and asphaltenes present in crude oil have been linked to modifications in wax crystallization ... -
Understanding the growth and physico-chemical properties of multifunctional nanoparticles
(Master thesis, 2018)Gold nanoparticles (Au NPs) exhibit localized surface plasmon resonance (LSPR) that provides wide applications in photothermal therapy, imaging and other theranostic applications. Recently, understanding the growth of ... -
Understanding the mechanism of CO2 reforming of methane to syngas on Ni@Pt surface compared with Ni(1 1 1) and Pt(1 1 1)
(Peer reviewed; Journal article, 2020)CO2 reforming of methane (DRM) is a promising reaction for the carbon cycle in nature. Ni was found to be active in this process. However, single component Ni catalysts cannot meet the stability, activity and selectivity ... -
Undersøkelse over "konkurrerende vekst" ved seed-polymerisasjon av vinylklorid
(Master thesis, 1970)Det ble i dette arbeidet studert den relative veksten av to partikkelstørrelser ved emulsjonspolymerisasjon av vinylklorid (seedpolymerisasjon). Det ble benyttet partikler med diametere omkring 1000 og 2000 Å. Det totale ...