Blar i NTNU Open på forfatter "Rytter, Erling"
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New and Innovative Conceptual Designs of Gas-to-Liquid Processes
Ostadi, Mohammad (Doctoral theses at NTNU;2017:205, Doctoral thesis, 2017)The research is about a chemical process, which turns natural gas into liquid fuel through chemical reactions, and it is called Gas-to-Liquid (GTL) process. The produced liquid fuel is a replacement for liquid fuel derived ... -
Novel Alginate Complex-derived Fe Catalysts for Sustainable Lower Olefin Production: Fischer-Tropsch Synthesis Based on Renewable Feedstocks
Tafjord, Joakim (Doctoral theses at NTNU;2022:310, Doctoral thesis, 2022) -
Optimal Renewable Energy Distribution Between Gasifier and Electrolyzer for Syngas Generation in a Power and Biomass-to-Liquid Fuel Process
Putta, Koteswara Rao; Pandey, Umesh; Gavrilovic, Ljubisa; Rout, Kumar Ranjan; Rytter, Erling; Blekkan, Edd Anders; Hillestad, Magne (Peer reviewed; Journal article, 2022)By adding energy as hydrogen to the biomass-to-liquid (BtL) process, several published studies have shown that carbon efficiency can be increased substantially. Hydrogen can be produced from renewable electrical energy ... -
Perspectives on the Effect of Water in Cobalt Fischer-Tropsch Synthesis
Holmen, Anders; Rytter, Erling (Journal article; Peer reviewed, 2017)Water is an inherent component in Fischer–Tropsch synthesis on Co catalysts, and the effect of water is discussed with an emphasis on alumina and aluminates as support materials. Water may affect the selectivity, activity, ... -
Significance of C3 Olefin to Paraffin Ratio in Cobalt Fischer–Tropsch Synthesis
Rytter, Erling; Yang, Jia; Borg, Øyvind; Holmen, Anders (Peer reviewed; Journal article, 2020)The ratio between propene and propane (C3 o/p) during Fischer–Tropsch synthesis (FTS) has been analyzed based on both literature reports and experiments for five catalysts. The latter comprise four cobalt catalysts on ... -
Solar Thermal Hydrogen Production: A Dynamic Reactor Model for the Hercynite Cycle
Westbye, Alexander (Master thesis, 2016)The focal point of this thesis is the production of hydrogen. Hydrogen is classified as a secondary energy source and must, analogous to electricity, be efficiently produced from some primary energy source. This primary energy ... -
SolarThermal Splitting of Water to Hydrogen with Co-doped-hercynite - Testing and Characterisation / Heat integration
Erevik, Tor Olav Høva (Master thesis, 2016)By using concentrated solar energy, it is possible to split water to hydrogen and oxygen, or eventually CO2 to CO and oxygen, by using redox materials at temperatures between 1200 1500 °C. One of the best redox materials ... -
Staging and path optimization of Fischer-Tropsch synthesis
Pandey, Umesh; Putta, Koteswara Rao; Rout, Kumar Ranjan; Blekkan, Edd Anders; Rytter, Erling; Hillestad, Magne (Peer reviewed; Journal article, 2022)Optimization of once-through three-stage Fischer-Tropsch (FT) synthesis using path optimization is performed in this study to identify optimal structure and strategies in multi-stage FT synthesis design. The study also ... -
Structure-performance relationships on Co based Fischer–Tropsch synthesis catalysts: The more defect free the better
Tsakoumis, Nikolaos; Patanou, Eleni; Lögdberg, Sara; Johnsen, Rune; Myrstad, Rune; Van Beek, Wouter; Rytter, Erling; Blekkan, Edd Anders (Journal article; Peer reviewed, 2018)Understanding and utilizing structure–performance relationships in catalytic nanomaterials is the epitome of catalysis science. Knowledge at the atomic level can potentially allow rational design of more selective and ... -
Surface Modified γ-Alumina Supports For Cobalt Fischer-Tropsch Catalysts
Salman, Ata ul Rauf (Master thesis, 2015)Fischer-Tropsch synthesis over cobalt based catalysts is an important route for the conversion of syngas, derived from natural gas, to liquid fuels. Fischer-Tropsch performance of cobalt catalysts depends on a number of ... -
Synthesis and Characterisation of Co-based Fischer-Tropsch Catalysts and Supports, using hydrothermal and chemical attrition Method - The magnesium moderation Effect
Karlsen, Aina Elin (Master thesis, 2011)Magnesium modification at different calcination temperatures of γ-alumina supports for cobalt Fischer-Tropsch catalysts was investigated. Support modification and catalyst preparation were performed by applying the incipient ... -
Transition-Metal Nanoparticle Catalysts Anchored on Carbon Supports via Short-Chain Alginate Linkers
Tafjord, Joakim; Holmen, Anders; Rytter, Erling; Myrstad, Rune; Svenum, Ingeborg-Helene; Christensen, Bjørn E.; Yang, Jia (Journal article; Peer reviewed, 2021)This study reports a green, inexpensive, and highly versatile procedure to synthesize well-dispersed transition-metal nanoparticles anchored on carbon supports. The resulting metal loadings are 26 wt % or above. Achieving ... -
Water as key to activity and selectivity in Co Fischer-Tropsch synthesis: γ-alumina based structure-performance relationships
Rytter, Erling; Borg, Øyvind; Tsakoumis, Nikolaos; Holmen, Anders (Journal article; Peer reviewed, 2018)Thirteen γ-alumina supports with different pore sizes and pore size distributions have been impregnated with cobalt and rhenium. The catalysts were tested for Fischer-Tropsch synthesis (FTS) under dry and enhanced water ... -
The water assisted vinylene mechanism for cobalt Fischer-Tropsch synthesis assessed by multi-catalyst modelling of kinetics and deactivation
Rytter, Erling; Runningen, Anders; Blekkan, Edd Anders; Hillestad, Magne (Peer reviewed; Journal article, 2022)The paper describes development of a mechanism and a consistent rate expression for Fischer-Tropsch (FT) synthesis over cobalt-based catalysts. The developed mechanism relies on a two-step hydrogen assisted activation of ... -
X-ray absorption, X-ray diffraction and electron microscopy study of spent cobalt based catalyst in semi-commercial scale Fischer-Tropsch synthesis
Tsakoumis, Nikolaos; Dehghan-Niri, Roya; Rønning, Magnus; Walmsley, John; Borg, Øyvind; Rytter, Erling; Holmen, Anders (Peer reviewed; Journal article, 2014)Calcined, reduced and spent Co-Re/γ-Al2O3 catalysts for Fischer–Tropsch synthesis (FTS) were characterized and compared. Co-K-edge and Re-LIII-edge X-ray absorption near edge structure (XANES), X-ray powder diffraction ... -
α-alumina as catalyst support in Co Fischer-Tropsch synthesis and the effect of added water; encompassing transient effects
Rytter, Erling; Borg, Øyvind; Enger, Bjørn Christian; Holmen, Anders (Peer reviewed; Journal article, 2019)Three catalyst supports containing from 84 to 100% α-alumina prepared by heat treatment of γ-alumina have been impregnated with cobalt and rhenium. The catalysts were tested for Fischer-Tropsch synthesis (FTS) under dry ...