Browsing Institutt for kjemisk prosessteknologi by Title
Now showing items 708-727 of 1784
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Heat to Hydrogen by RED—Reviewing Membranes and Salts for the RED Heat Engine Concept
(Peer reviewed; Journal article, 2022)The Reverse electrodialysis heat engine (REDHE) combines a reverse electrodialysis stack for power generation with a thermal regeneration unit to restore the concentration difference of the salt solutions. Current approaches ... -
Helium separation using membrane technology: Recent advances and perspectives
(Peer reviewed; Journal article, 2021)Helium is an unrenewable noble gas produced from natural gas with a wide range of scientific, medical, and industrial applications. Due to the large differences in the kinetic diameters between helium (0.26 nm) and nitrogen ... -
High capacity Mg batteries based on surface-controlled electrochemical reactions
(Journal article; Peer reviewed, 2018)Mg batteries are one of several new battery technologies expected to partially substitute lithium-based batteries in the future due to the lower cost and higher safety. However, the development of Mg batteries has been ... -
High Peel Strength and Flexible Aligned Carbon Nanotubes/Etched Al Foil Composites with Boosted Supercapacitor and Thermal Dissipation Performances
(Peer reviewed; Journal article, 2019)In this work, aligned carbon nanotubes (ACNTs) were grown on etched Al foil with improved bonding strength by direct thermal chemical vapor deposition. In the interface of the ACNTs adjacent to the etched Al substrate, the ... -
High pressure equation of state for condensed phase thermodynamics
(Master thesis, 2012)In this study a search for an equation of state (EOS) that accurately predicts solids behaviour at both high pressure and temperature has been performed. Firstly, several two-parameter isothermal EOSs for solids under high ... -
High Temperature CO2 Capture Catalytic Combustion of Methane over cobalt cerium-based catalysts.
(Master thesis, 2020)The following master thesis is a work package from a larger project for the design of a novel and commercialize more sustainable process for energy generation. This process is a new hybrid natural gas combined cycle power ... -
High-Capacity Amine-Imidazole Solvent Blends for CO2 Capture
(Journal article; Peer reviewed, 2019)The CO2 absorption performance of aqueous solvent blends containing four imidazoles (2-MeIm, 2-Et-4-MeIm, 2,4,5-MeIm and 1,2,4,5-MeIm) and four promoters (MEA, DEA, PZ, and MAPA) were investigated using a small-scale ... -
High-performance carbon-capture membranes developed by (non)solvent-induced nanostructural rearrangement in Nafion
(Peer reviewed; Journal article, 2023)Membrane materials exhibiting high CO2 permeability and selectivity are needed for CO2 capture to mitigate global climate change. In this study, Nafion is dissolved in and cast from N-methylpyrrolidone to generate membranes ... -
High-pressure processing-induced transcriptome response during recovery of Listeria monocytogenes
(Peer reviewed; Journal article, 2021)Background High-pressure processing (HPP) is a commonly used technique in the food industry to inactivate pathogens, including L. monocytogenes. It has been shown that L. monocytogenes is able to recover from HPP injuries ... -
High-pressure processing-induced transcriptome response during recovery of Listeria monocytogenes
(Peer reviewed; Journal article, 2021)Background: High-pressure processing (HPP) is a commonly used technique in the food industry to inactivate pathogens, including L. monocytogenes. It has been shown that L. monocytogenes is able to recover from HPP injuries ... -
High-Temperature Core Flood Investigation of Nanocellulose as a Green Additive for Enhanced Oil Recovery
(Journal article; Peer reviewed, 2019)Recent studies have discovered a substantial viscosity increase of aqueous cellulose nanocrystal (CNC) dispersions upon heat aging at temperatures above 90 °C. This distinct change in material properties at very low ... -
High-temperature desulfurization of biomassderived synthesis gas using solid sorbents
(Doctoral theses at NTNU;2021:14, Doctoral thesis, 2021)Conversion of synthesis gas from biomass gasification to fuels or other valuable chemicals is regarded as a sustainable and renewable pathway to solve the energy crisis. However, the sulfur impurities, normally in the form ... -
High-temperature sulfur capture by a Mn-Mo sorbent: An investigation of regeneration conditions and SO<inf>2</inf> formation and prevention
(Peer reviewed; Journal article, 2023)The regeneration performance of a solid sorbent (alumina-supported 15Mn8Mo) for sulfur capture at high temperature has been studied. The regeneration of the sulfided sorbent was performed by oxidizing at different temperatures ... -
Highlights and Main Findings from the 8 Year SOLVit R&D Programme – Bringing Solvents and Technology from Laboratory to Industry
(Journal article; Peer reviewed, 2017)SOLVit is an eight year (2008 – 2015) and 37 million Euro research programme focusing on developing energy efficient and environmental friendly post combustion carbon capture systems for large-scale industrial CO2 emissions. ... -
Highly CO2-permeable membranes derived from a midblock-sulfonated multiblock polymer after submersion in water
(Journal article; Peer reviewed, 2019)To mitigate the effect of atmospheric CO2 on global climate change, gas separation materials that simultaneously exhibit high CO2 permeability and selectivity in gas mixtures must be developed. In this study, CO2 transport ... -
Highly selective CO removal by sorption enhanced Boudouard reaction for hydrogen production
(Journal article, 2019)The development of an energy-efficient and cost-effective technology for the purification of a hydrogen rich stream to achieve a CO concentration below 10 ppm, suitable for low temperature fuel cell applications, is one ... -
Hole cleaning and wet-granular rheology of rock cutting beds: Impact of drilling fluid composition
(Peer reviewed; Journal article, 2022)Cuttings-beds formation is an issue that must be considered during all wellbore drilling operations. This problem increases at highly deviated or horizontal wells, where cuttings removal efficiency becomes one of the most ... -
Homo- and copolymerization of ethene and 1-hexene with selected zirconocene catalysts
(Doktoravhandlinger ved NTNU, 1503-8181; 2001:79, Doctoral thesis, 2001)Homopolymerization of ethene and copolymerization of ethene /1-hexene with methyl substituted zirconocene dichloride / methylaluminoxane catalysts ((MenC5H5-n)2ZrCl2 / MAO) have been performed at 80°C and 2 bar ethene ... -
Hot gas cleaning
(Master thesis, 2014)Five H2S adsorbent materials for hot gas cleaning of biomass-derived synthesis gas were prepared. Three of the new sorbents were prepared based on a novel manganese-based sorbent that uses alumina support. The new adsorbent ... -
An hp-adaptive quadrature method for irregular integrands: Application to the population balance equation birth term
(Peer reviewed; Journal article, 2019)The solution of the population balance equation requires the integration of several source terms. In the numerical weighted residuals methods, Gaussian quadrature is a natural candidate for numerical integration. Previous ...