Blar i Institutt for kjemisk prosessteknologi på tittel
Viser treff 1716-1735 av 1771
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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 ... -
Uniaxial Néel vector control in perovskite oxide thin films by anisotropic strain engineering
(Peer reviewed; Journal article, 2021)Antiferromagnetic (AF) thin films typically exhibit a multidomain state, and control of the AF Néel vector is challenging, as AF materials are robust to magnetic perturbations. In this paper, uniaxial Néel vector control ... -
Unifying Transport Phenomena and Thermodynamic Equilibrium Models: A theoretical study of current and novel equilibrium based models in transport phenomena
(Doctoral theses at NTNU;2023:87, Doctoral thesis, 2023)Transport phenomena are based on the conservation of mass, momentum, and energy, and provide equations that give insight into the motion of fluids, the driving force behind this motion, and the dissipation of such driving ... -
Unleash electron transfer in C-H functionalization by mesoporous carbon-supported palladium interstitial catalysts
(Peer reviewed; Journal article, 2021)The functionalization of otherwise unreactive C–H bonds adds a new dimension to synthetic chemistry, yielding useful molecules for a range of applications. Arylation has emerged as an increasingly viable strategy for ... -
Unraveling catalytic properties by yttrium promotion on mesoporous SBA-16 supported nickel catalysts towards CO2 methanation
(Peer reviewed; Journal article, 2021)The ordered mesoporous silica SBA-16 with high specific surface area and pore volume was synthesized and used to prepare Ni/SBA-16 catalysts promoted with yttrium. These promoted catalysts were tested in CO2 methanation ... -
Unraveling Enhanced Activity, Selectivity, and Coke Resistance of Pt–Ni Bimetallic Clusters in Dry Reforming
(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. ... -
Using a neural network for estimating plant gradients in real-time optimization with modifier adaptation
(Journal article; Peer reviewed, 2019)In the presence of structural plant-model mismatch, standard real-time optimization (RTO) schemes are prone to compute an operation point that does not coincide with the plant optimum. Modifier Adaptation (MA) methods are ... -
Utvikling av prosedyre for overvåking av nikkel og kobolt i avløpsvann fra metallurgisk industri
(Master thesis, 2014)Muligheten for å bruke differensialpuls anodisk stripping voltammetri (DPASV) for samtidig bestemmelse av nikkel (II)- og kobolt (II)-konsentrasjonen i avløpsvannet fra Glencore Nikkelverk er blitt undersøkt. En polykrystallinsk ... -
UV degradation of natural and synthetic microfibers causes fragmentation and release of polymer degradation products and chemical additives
(Peer reviewed; Journal article, 2020)A high proportion of the total microplastic (MP) load in the marine environment has been identified as microfibers (MFs), with polyester (PET) and polyamide (PA) typically found in the highest abundance. The potential for ... -
Valorization of lignocellulosic waste (Crotalaria juncea ) using alkaline peroxide pretreatment under different process conditions: An optimization study on separation of lignin, cellulose, and hemicellulose
(Peer reviewed; Journal article, 2018)Lignocellulose materials, essentially consisting of lignin, cellulose and hemicelluloses, are abundant sources of fermentable sugars. The bast fiber of Crotalaria juncea (Sunn hemp), a native cover crop of India, was used ... -
Vapor Liquid Equilibrium (VLE) in H2O-Amine-CO2 system
(Master thesis, 2012)New experimental data for vapor-liquid equilibrium of CO2 in aqueous solutions of 3M/26.84% wt, 1M/9% wt and 0.1M/0.89% wt AMP (2-amino-2-methyl-1-propanol) and 1.5M PZ are reported from 313 to 393K. Low pressure/temperature ... -
Vapor Liquid Equilibrium Measurements of Two Promising Tertiary Amines for CO2 Capture
(Journal article; Peer reviewed, 2019)Post combustion CO2 capture is still a rather energy intense, and therefore expensive, process. Much of the current research for reducing the process energy requirements is focused on the regeneration section. A good ...