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Blar i NTNU Open på forfatter "Rønning, Magnus"

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Viser treff 1-20 av 80

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    • Active sites for the oxygen reduction reaction in nitrogen-doped carbon nanofibers 

      Buan, Marthe Emelie Melandsø; Cognigni, Andrea; Walmsley, John; Muthuswamy, Navaneethan; Rønning, Magnus (Journal article; Peer reviewed, 2019)
      Understanding the role of iron and the nature of the active sites in nitrogen-doped carbon nanomaterials is vital for their future application as oxygen reduction electrocatalysts in fuel cells. In this paper, porphyrin-like ...
    • Advanced characterization of flame spray pyrolysis prepared catalysts for oxidation of NO to NO2 

      Meuche, Martin Peter (Master thesis, 2019)
      Hensikten med denne masteroppgaven var å undersøke bruken av flamme-spray pyrolyse som syntesemetode for krystallinske katalysatorer med store overflater for bruk i oksidasjon av NO til NO 2 . Dette ble gjort gjennom grundig ...
    • Atomically dispersed Fe-N-P-C complex electrocatalysts for superior oxygen reduction 

      Li, Yahao; Chen, Bingxu; Duan, Xuezhi; Chen, Shuangming; Liu, Daobin; Zang, Ketao; Si, Rui; Lou, Fengliu; Wang, Xuehang; Rønning, Magnus; Song, Li; Luo, Jun; Chen, De (Journal article; Peer reviewed, 2019)
      Development of cost-effective electrocatalysts as an alternative to platinum for oxygen reduction reaction (ORR) is of great significance for boosting the applications of green energy devices such as fuel cells and metal-air ...
    • Capturing metal-support interactions in situ during the reduction of a Re promoted Co/γ-Al2O3 catalyst 

      Tsakoumis, Nikolaos; Johnsen, Rune E.; van Beek, Wouter; Rønning, Magnus; Rytter, Erling; Holmen, Anders (Journal article; Peer reviewed, 2016)
      The reduction of a Re promoted Co/γ-Al2O3 catalyst was monitored in situ by synchrotron X-ray powder diffraction (XRPD) under H2 environment. Whole powder pattern analysis revealed a non-linear expansion of the unit cell ...
    • Carbon-resistant NiO-Y2O3-nanostructured catalysts derived from double-layered hydroxides for dry reforming of methane 

      Swirk, Katarzyna; Zhang, Hailong; Li, Shanshan; Chen, Yaoqiang; Rønning, Magnus; Motak, Monika; Grzybek, Teresa; Da Costa, Patrick (Peer reviewed; Journal article, 2021)
      Yttrium promoted Ni/Mg/Al double-layered hydroxides were prepared through co-precipitation method and calcined at 550 °C for 5 h in order to obtain nanostructured mixed oxides. The catalysts were tested in dry reforming ...
    • Catalysts for electrochemical conversion of CO2 in aqueous solutions 

      Hjorth, Ida (Doctoral theses at NTNU;2017:82, Doctoral thesis, 2017)
      An artificial photosynthesis process can 1) utilise renewable energy from the sun, 2) facilitate convenient energy storage in chemical bonds, 3) supply feed-stock to the chemical industry, and 4) recycle CO2 in a CO2-neutral ...
    • Catalytic Oxidation of NO over LaCo1−xBxO3 (B = Mn, Ni) Perovskites for Nitric Acid Production 

      Salman, Ata ul Rauf; Hyrve, Signe Marit; Regli, Samuel K.; Zubair, Muhammad; Enger, Bjørn Christian; Lødeng, Rune; waller, david; Rønning, Magnus (Journal article; Peer reviewed, 2019)
      Abstract Nitric acid (HNO3) is an important building block in the chemical industry. Industrial production takes place via the Ostwald process, where oxidation of NO to NO2 is one of the three chemical steps. The reaction ...
    • Catalytic oxidation of NO to NO2 for nitric acid production 

      Salman, Ata ul Rauf (Doctoral theses at NTNU;2019:376, Doctoral thesis, 2019)
    • Catalytic oxidation of NO to NO2 for nitric acid production over a Pt/Al2O3 catalyst 

      Salman, Ata ul Rauf; Enger, Bjørn Christian; Auvray, Xavier; Lødeng, Rune; Menon, Mohan; Waller, David; Rønning, Magnus (Journal article; Peer reviewed, 2018)
      The oxidation of nitric oxide (NO) to nitrogen dioxide (NO2) is a key step both in NOx abatement technologies as well as in the Ostwald process for nitric acid production. A 1 wt.% Pt/Al2O3 catalyst was used to study ...
    • Ce- and Y-Modified Double-Layered Hydroxides as Catalysts for Dry Reforming of Methane: On the Effect of Yttrium Promotion 

      Swirk, Katarzyna; Rønning, Magnus; Motak, Monika; Beaunier, Patricia; Da Costa, Patrick; Grzybek, Teresa (Journal article; Peer reviewed, 2019)
      Ce- and Y-promoted double-layered hydroxides were synthesized and tested in dry reforming of methane (CH4/CO2 = 1/1). The characterization of the catalysts was performed using X-ray fluorescence (XRF), X-ray diffraction ...
    • CeO2-ZrO2-WO3-based catalysts for Selective Catalytic Reduction of Nitrogen Oxides by Ammonia 

      Hui, Chun Kin (Master thesis, 2018)
      Cerium, zirconium and tungsten based catalysts with addition of 3% copper were prepared through the hydrothermal method and incipient wetness impregnation method. The three catalysts produced were named CZW (hydrothermal ...
    • Co-precipitated ni-mg-al hydrotalcite-derived catalyst promoted with vanadium for co<inf>2</inf> methanation 

      Summa, Paulina; Swirk, Katarzyna; Wierzbicki, Dominik; Motak, Monika; Alxneit, Ivo; Rønning, Magnus; Da Costa, Patrick (Journal article; Peer reviewed, 2021)
      Co-precipitated Ni-Mg-Al hydrotalcite-derived catalyst promoted with vanadium were synthesized with different V loadings (0–4 wt%) and studied in CO2 methanation. The promotion with V significantly changes textural properties ...
    • Comparative study on the photocatalytic hydrogen producton from methanol over Cu, Pd, Co and Au loaded TiO2 

      Punchi Patabandige, Charitha Udani; Rønning, Magnus (Peer reviewed; Journal article, 2015)
      Photocatalytic hydrogen production from a methanol-water solution was investigated in a semi-continuous reactor over different metal-loaded TiO2 catalysts under UltraViolet (UV) light irradiation. The catalysts were mainly ...
    • Comparison of Fresh and Spent Pd/Al2O3 Catalysts for Low Temperature Selective Hydrogenation 

      Værnes, Erlend Skjørstad (Master thesis, 2021)
      Karakterisering av to kommersielle Pd/γ-Al2O3 katalysatorer med ulik dispersjon var utført før og etter aktivitetstester. Aktivitetstestene innebar selektiv hydrogenering av et nitroarenderivat for å danne et korresponderende ...
    • Core-Shell Nanostructures of Graphene-Wrapped CdS Nanoparticles and TiO2 (CdS@G@TiO2): The Role of Graphene in Enhanced Photocatalytic H2 Generation 

      Zubair, Muhammad; Svenum, Ingeborg-Helene; Rønning, Magnus; Yang, Jia (Peer reviewed; Journal article, 2020)
      Aiming to achieve enhanced photocatalytic activity and stability toward the generation of H2 from water, we have synthesized noble metal-free core-shell nanoparticles of graphene (G)-wrapped CdS and TiO2 (CdS@G@TiO2) by a ...
    • Core-shell particles of C-doped CdS and graphene: A noble metal-free approach for efficient photocatalytic H2 generation 

      Zubair, Muhammad; Vanhaecke, Estelle Marie M.; Svenum, Ingeborg-Helene; Rønning, Magnus; Yang, Jia (Journal article; Peer reviewed, 2020)
      To achieve efficient photocatalytic H2 generation from water using earth-abundant and cost-effective materials, a simple synthesis method for carbon-doped CdS particles wrapped with graphene (C-doped CdS@G) is reported. ...
    • Correlation of Catalyst Morphology with Attrition Resistance and Catalytic Activity of Fischer-Tropsch Catalysts 

      Fiske, Thomas Haukli (Master thesis, 2013)
      Three alumina based support materials for the Fischer-Tropsch synthesis (FTS) catalyst has been prepared and investigated. The three support materials were prepared in order to obtain different mechanical strengths, ...
    • 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 ...

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