Blar i NTNU Open på forfatter "Rønning, Magnus"
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Cu-Promoted Fe-Based Catalyst for Biomass-Derived Synthesis Gas for the Fischer-Tropsch Synthesis
Jensen, Lise Saue (Master thesis, 2015)Four alumina supported iron-based catalysts were prepared by incipient wetness impregnation. The Fe loading was kept constant at 15 wt.%, and the Cu loading was varied between 0-5 wt.. The catalyst samples were characterized ... -
Decoding atomic-level structures of the interface between Pt sub-nanocrystals and nanostructured carbon
Cheng, Hongye; Kvande, Ingvar; Zhu, Yi-An; Hammer, Nina; Rønning, Magnus; Walmsley, John; Li, Ping; Qi, Zhiwen; Zhou, Xing-Gui; Chen, De (Journal article; Peer reviewed, 2018)Gaining an insight into the interface structure resulting from the interaction between metal nanoparticles and their supports, particularly under relevant reaction conditions, has been an important topic in heterogeneous ... -
Development of Visible Light-Responsive Photocatalysts for Hydrogen Production from Glycerol
Apan, Shawn Christopher (Master thesis, 2016)Different catalyst preparation methods were performed. In the case of TiO2, the cocatalyst was deposited on commercial TiO2-P25 by wet impregnation. Cu-loaded and Pt-loaded TiO2 was achieved by calcination in static air ... -
Doped carbon nanostructures as metal-free catalysts for oxidative dehydrogenation of light alkanes
Jenssen, Kaia Andersson (Master thesis, 2014)Catalytic reactions are often carried out on various supported metals, these usually being noble metals or metal oxides. Even though metal based catalysts plays a major role in today s industrial processes, they still have ... -
Dry reforming of methane over Zr- and Y-modified Ni/Mg/Al double-layered hydroxides
Swirk, Katarzyna; Galvez, Maria Elena; Motak, Monika; Grzybek, Teresa; Rønning, Magnus; Da Costa, Patrick (Journal article; Peer reviewed, 2018)Zr- and Y-promoted Ni/Mg/Al double-layered hydroxides were investigated in dry reforming of methane, DRM (10% CH4, CH4/CO2 = 1, GHSV = 20,000 h−1) for the first time. Modification of the double-layered hydroxides with 5 wt% ... -
Effect of cobalt promotion on hydrotalcite-derived nickel catalyst for CO2 methanation
Summa, Paulina; Swirk, Katarzyna; Wang, Ye; Samojeden, Bogdan; Rønning, Magnus; Hu, Changwei; Motak, Monika; Da Costa, Patrick (Peer reviewed; Journal article, 2021)A series of cobalt-promoted Ni-Mg-Al hydrotalcite-derived catalysts were tested towards CO2 methanation reaction. The best among examined catalysts was the one with 1 wt% of cobalt in fresh hydrotalcite, obtaining 77% of ... -
Effect of low loading of yttrium on Ni-based layered double hydroxides in CO2 reforming of CH4
Swirk, Katarzyna; Motak, Monika; Grzybek, Teresa; Rønning, Magnus; Da Costa, Patrick (Journal article; Peer reviewed, 2018)Ni/Al/Mg layered double hydroxides (LDHs) modified with low loading of yttrium (0.2 and 0.4 wt%) were used in dry reforming of methane at 700 °C. Physicochemical characterization, such as: X-ray fluorescence, N2 sorption, ... -
Effect of Rh on Pd-based Three-Way Catalyst for Promotion of CH4 Steam Reforming under O2 Dithering Conditions
Jacobsen, Vilde Vinnes (Master thesis, 2021)I løpet av de siste årene har interessen for naturgass (NG, ~ 80 % CH4) som et alternativt drivstoff økt da dens forbrenning fører til lavere CO2- og partikkelutslipp sammenlignet med de tradisjonelle drivstoffene. ... -
Efficient catalysts for achieving NO /NO2 equilibrium
Lid, Mads Alexander (Master thesis, 2016)The aim of this work was to characterize an alumina supported Pt catalyst before and after post- and pre-modification with WO3. A 2wt%Ru/Al2O3 and a WO3/ZrO2 catalyst were also characterized. Pt/Al2O3 with a loading of ... -
Electrochemical syngas production from CO2 and water with CNT supported ZnO catalysts
Hjorth, Ida; Wang, Yalan; Li, Yahao; Buan, Marthe Emelie Melandsø; Nord, Magnue; Rønning, Magnus; Yang, Jia; Chen, De (Peer reviewed; Journal article, 2020)Electrochemical reduction of CO2 and H2O can provide a promising pathway to synthesis gas generation for renewable electric energy storage and fuel production with the closed anthropogenic carbon cycle. However, the lack ... -
Ethylene Oxychlorination on CuCI2 based Catalysts: Operando Kinetic Study
Baidoo, Martina Francisca (Doctoral thesis, 2019)Polyvinyl chloride, popularly known as PVC is the third most used plastic in the world. It is used for producing pipes, synthetic leather, window frames, water hoses, floors, coatings, etc. PVC is durable, long lasting and ... -
Evaluation of ORR active sites in nitrogen-doped carbon nanofibers by KOH post treatment
Muthuswamy, Navaneethan; Buan, Marthe Emelie Melandsø; Walmsley, John; Rønning, Magnus (Journal article; Peer reviewed, 2018)Oxygen reduction on N-doped carbon nanomaterials is believed to take place at either N-centered active sites (C-Nx) or Fe-centered active sites (Fe-Nx). In this work the origin of the oxygen reduction on nitrogen-doped ... -
Evaluation of Reoxidation Thresholds for γ-Al2O3-Supported Cobalt Catalysts under Fischer - Tropsch Synthesis Conditions
Tsakoumis, Nikolaos; Walmsley, John; Rønning, Magnus; van Beek, Wouter; Rytter, Erling; Holmen, Anders (Journal article; Peer reviewed, 2017)Size-dependent phenomena at the nanoscale influence many applications, notably in the science of heterogeneous catalysis. In cobalt-based Fischer–Tropsch synthesis (FTS), the size of Co nanoparticles (NPs) dictates to a ... -
Exploring metal-metal and metal-support interactions in Pt-based catalysts for aqueous phase reforming
Pazos Urrea, Monica (Doctoral theses at NTNU;2023:402, Doctoral thesis, 2023)The extensive use of fossil fuels is widely recognized as one of the primary factors contributing to global warming. Therefore, finding alternative and sustainable energy sources/carriers is a relevant area of research to ... -
Facile synthesis approach for core-shell TiO2–CdS nanoparticles for enhanced photocatalytic H2 generation from water
Zubair, Muhammad; Svenum, Ingeborg-Helene; Rønning, Magnus; Yang, Jia (Journal article; Peer reviewed, 2018)With the ambition to design a cost-effective and highly stable photocatalyst with improved photocatalytic activity towards H2 generation by water splitting, herein we report a two-step facile synthesis approach for core-shell ... -
Fe-ZSM-5 og Fe-SAPO-34 Katalysatorer for Lavtemperatur Selektiv Katalytisk Reduksjon av NOx med NH3
Landfald, Lisa Leganger (Master thesis, 2019)Jernbaserte katalysatorer med zeolitten ZSM-5 og zeotypene konvensjonell SAPO-34 og hierarkisk SAPO-34 som bærere ble laget for å undersøke katalytiske opptredenen for selektiv katalytisk reduksjon av NOX med NH3 ved lavere ... -
Fischer-Tropsch Catalysts for Jet Fuel Production
Casalegno Garduño, Mario Ernesto (Master thesis, 2014)Diverse β-zeolite and β-zeolite/Fischer Tropsch catalysts were prepared under hydrothermal conditions to obtain a tailored jet fuel catalyst. The Fischer Tropsch catalyst that was employed is cobalt-based and it was provided ... -
Fotokatalyse - Fotokatalytisk Hydrogen Produksjon Gjennom Foto-reforming av Hydrokarboner
Tolgensbakken, Eirik (Master thesis, 2014)I løpet av det siste vårsemesteret på masterstudium i industriell kjemi, ble det kjørt en rekke eksperimenter i fotokatalyse, for å undersøke optimale driftsforhold ved ett skifte av alkohol til glyserol. Andre alkoholer ... -
Fotokatalystisk hydrogenproduksjon gjennom fotoreforming av hydrokarboner
Djuve, Eirik (Master thesis, 2013)Hensikten med dette prosjektet var å undersøke Cu-TiO2 som fotokatalysator for fotoreforming av metanol. Dette er en prosess der hydrogen blir produsert fra metanol i vannløsning ved hjelp av UV-lys og en fotokatalysator. ... -
Fotokatalytisk drivstoff-produksjon gjennom fotoreforming av hydrokarboner
Lien Bjørnstad, Ida (Master thesis, 2011)The purpose of this study is to investigate the photoreforming of methanol for hydrogen production. Since the photocatalysis field needs a cheaper efficient photocatalyst than the more common Pt loaded TiO2, CuO loaded ...