Browsing by Author "Vasiliades, Michalis A."

Now showing items 1-20 of 21

    • Article  

      Carbon dioxide storage in olivine basalts: Effect of ball milling process 

      Rigopoulos, Ioannis; Petallidou, Klito C.; Vasiliades, Michalis A.; Delimitis, Andréas; Ioannou, Ioannis; Efstathiou, Angelos M.; Kyratsi, Theodora (2015)
      The goal of this study is to propose a cost-effective method for the optimization of the ex situ carbonation of basaltic rocks. The ball milling process was applied to a sample of olivine basalt from the Troodos ophiolite ...
    • Article  

      Carbon dioxide storage in olivine basalts: Effect of ball milling process 

      Rigopoulos, Ioannis; Petallidou, Klito C.; Vasiliades, Michalis A.; Delimitis, A.; Ioannou, Ioannis; Efstathiou, A. M.; Kyratsi, Theodora (2015)
      The goal of this study is to propose a cost-effective method for the optimization of the ex situ carbonation of basaltic rocks. The ball milling process was applied to a sample of olivine basalt from the Troodos ophiolite ...
    • Article  

      Carbon dioxide storage in olivine basalts: Effect of ball milling process 

      Rigopoulos, Ioannis; Petallidou, Klito C.; Vasiliades, Michalis A.; Delimitis, A.; Ioannou, Ioannis; Efstathiou, A. M.; Kyratsi, Theodora (2015)
      The goal of this study is to propose a cost-effective method for the optimization of the ex situ carbonation of basaltic rocks. The ball milling process was applied to a sample of olivine basalt from the Troodos ophiolite ...
    • Article  

      Cu-Ce-La-Ox as efficient CO oxidation catalysts: Effect of Cu content 

      AlKetbi, Maitha; Polychronopoulou, Kyriaki; Abi Jaoude, Maguy; Vasiliades, Michalis A.; Sebastian, Victor; Hinder, Steven J.; Baker, Mark A.; Zedan, Abdallah F.; Efstathiou, Angelos M. (2020)
      Nanograins of Ce-La-xCu-O mixed metal oxides (wherex = 3, 5, 7, 10, 20 at.%), of approximately 16 nm2 area size, and having all the metal cations homogeneously distributed, are tested as ternary catalytic materials towards ...
    • Article  

      Dry reforming of methane over 5 wt% Ni/Ce1-xPrxO2-δ catalysts: Performance and characterisation of active and inactive carbon by transient isotopic techniques 

      Vasiliades, Michalis A.; Makri, M. M.; Djinović, P.; Erjavec, B.; Pintar, A.; Efstathiou, Angelos M. (2016)
      The effects of Ce1-xPrxO2-δ support composition (x = 0.0–0.8) and reaction temperature (550–750 °C) on the catalytic activity and selectivity and important features of the mechanism of the dry reforming of methane (DRM) ...
    • Article  

      The Effect of CeO2 Preparation Method on the Carbon Pathways in the Dry Reforming of Methane on Ni/CeO2 Studied by Transient Techniques 

      Damaskinos, Constantinos M.; Vasiliades, Michalis A.; Stathopoulos, Vassilis N.; Efstathiou, Angelos M. (2019)
      The present work discusses the effect of CeO2 synthesis method (thermal decomposition (TD), precipitation (PT), hydrothermal (HT), and sol-gel (SG)) on the carbon pathways of dry reforming of methane with carbon dioxide ...
    • Article  

      Effect of support composition on the origin and reactivity of carbon formed during dry reforming of methane over 5 wt% Ni/Ce1-xMxO2-δ (M = Zr4+, Pr3+) catalysts 

      Makri, M. M.; Vasiliades, Michalis A.; Petallidou, Klito C.; Efstathiou, Angelos M. (2016)
      Carbon dioxide reforming of methane to synthesis gas in the 550-750°C range over 5 wt% Ni/Ce1-xMxO2-δ (M = Zr4+, Pr3+) solids has been investigated with respect to the effects of support chemical composition and reaction ...
    • Article  

      Enhancing the rate of ex situ mineral carbonation in dunites via ball milling 

      Rigopoulos, Ioannis; Vasiliades, Michalis A.; Ioannou, Ioannis; Efstathiou, Angelos M.; Godelitsas, A.; Kyratsi, Theodora (2016)
      The investigation of potential options for CO2 sequestration is of vital importance for alleviating the ongoing climate problem. This paper presents an efficient method for enhancing the ex situ carbonation of dunites. The ...
    • Article  

      Enhancing the rate of ex situ mineral carbonation in dunites via ball milling 

      Rigopoulos, Ioannis; Vasiliades, Michalis A.; Ioannou, Ioannis; Efstathiou, A. M.; Godelitsas, A.; Kyratsi, Theodora (2016)
      The investigation of potential options for CO 2 sequestration is of vital importance for alleviating the ongoing climate problem. This paper presents an efficient method for enhancing the ex situ carbonation of dunites. ...
    • Article  

      Enhancing the rate of ex situ mineral carbonation in dunites via ball milling 

      Rigopoulos, Ioannis; Vasiliades, Michalis A.; Ioannou, Ioannis; Efstathiou, A. M.; Godelitsas, A.; Kyratsi, Theodora (2016)
      The investigation of potential options for CO 2 sequestration is of vital importance for alleviating the ongoing climate problem. This paper presents an efficient method for enhancing the ex situ carbonation of dunites. ...
    • Article  

      A method to enhance the CO2 storage capacity of pyroxenitic rocks 

      Rigopoulos, Ioannis; Vasiliades, Michalis A.; Petallidou, Klito C.; Ioannou, Ioannis; Efstathiou, Angelos M.; Kyratsi, Theodora (2015)
      Investigation of new efficient pathways for CO2 sequestration is of great significance for the mitigation of climate change. Ultramafic rocks are considered among the most promising lithotypes for the safe storage of CO2 ...
    • Article  

      N2O decomposition over ceria-promoted Ir/Al2O3 catalysts: The role of ceria 

      Pachatouridou, E.; Papista, E.; Delimitis, Andréas; Vasiliades, Michalis A.; Efstathiou, Angelos M.; Amiridis, Michael D.; Alexeev, O. S.; Bloom, D.; Marnellos, G. E.; Konsolakis, M.; Iliopoulou, E. (2016)
      The impact of CeO2 in the Al2O3-20wt% CeO2 support prepared by the co-precipitation method on the Ir particle size, morphology and oxidation state, and in turn on the deN2O catalytic activity (1000ppmN2O) of supported Ir ...
    • Article  

      A Novel Analysis of Transient Isothermal 18O Isotopic Exchange on Commercial CexZr1−xO2-Based OSC Materials 

      Vasiliades, Michalis A.; Harris, Deb; Stephenson, Hazel; Boghosian, Soghomon; Efstathiou, Angelos M. (2019)
      A novel methodology for the analysis of 18O2-transient isothermal isotopic exchange (TIIE) response curves obtained over commercial mixed metal oxides upon the gas switch 16O2/Ar (30 min) → 18O2/Kr/Ar (t) at constant T in ...
    • Article  

      On the potential use of quarry waste material for CO2 sequestration 

      Rigopoulos, Ioannis; Petallidou, Klito C.; Vasiliades, Michalis A.; Delimitis, Andréas; Ioannou, Ioannis; Efstathiou, Angelos M.; Kyratsi, Theodora (2016)
      The use of solid wastes rich in Ca2+, Mg2+ and Fe2+ for the ex situ sequestration of CO2 could provide an economically and technologically viable option for the reduction of anthropogenic CO2 emissions. Here, we investigate ...
    • Article  

      On the potential use of quarry waste material for CO2 sequestration 

      Rigopoulos, Ioannis; Petallidou, Klito C.; Vasiliades, Michalis A.; Delimitis, A.; Ioannou, Ioannis; Efstathiou, A. M.; Kyratsi, Theodora (2016)
      •Novel nanomaterials were produced via ball milling (BM) of quarry waste material.•Various morphological and structural modifications occurred after the BM process.•The optimum conditions are 20h of BM with 50wt% ethanol ...
    • Article  

      On the potential use of quarry waste material for CO2 sequestration 

      Rigopoulos, Ioannis; Petallidou, Klito C.; Vasiliades, Michalis A.; Delimitis, A.; Ioannou, Ioannis; Efstathiou, A. M.; Kyratsi, Theodora (2016)
      •Novel nanomaterials were produced via ball milling (BM) of quarry waste material.•Various morphological and structural modifications occurred after the BM process.•The optimum conditions are 20h of BM with 50wt% ethanol ...
    • Article  

      Origin and reactivity of active and inactive carbon formed during DRM over Ni/Ce0.38Zr0.62O2-δ studied by transient isotopic techniques 

      Vasiliades, Michalis A.; Djinović, P.; Davlyatova, L. F.; Pintar, A.; Efstathiou, Angelos M. (2016)
      The role of Ce0.38Zr0.62O2-δ redox support and that of reactants CH4 and CO2 in the carbon-path of dry reforming of methane (DRM) at 750°C over a 3wt% Ni/Ce0.38Zr0.62O2-δ catalyst were investigated. In particular, meticulously ...
    • Article  

      Original Research Paper: Enhancing the rate of ex situ mineral carbonation in dunites via ball milling 

      Rigopoulos, Ioannis; Vasiliades, Michalis A.; Ioannou, Ioannis; Efstathiou, A. M.; Godelitsas, A.; Kyratsi, Theodora (2016)
      •Dunitic materials with enhanced CO2 uptake were created via ball milling (BM).•The optimum conditions are 12h of BM with 50wt% ethanol as process control agent.•The BM process increased the CO2 uptake of dunites by a ...
    • Article  

      Original Research Paper: Enhancing the rate of ex situ mineral carbonation in dunites via ball milling 

      Rigopoulos, Ioannis; Vasiliades, Michalis A.; Ioannou, Ioannis; Efstathiou, A. M.; Godelitsas, A.; Kyratsi, Theodora (2016)
      •Dunitic materials with enhanced CO2 uptake were created via ball milling (BM).•The optimum conditions are 12h of BM with 50wt% ethanol as process control agent.•The BM process increased the CO2 uptake of dunites by a ...
    • Article  

      Promotional effect of Ce doping in Cu4Al1Ox – LDO catalyst for low-T practical NH3-SCR: Steady-state and transient kinetics studies 

      Yan, Qinghua; Gao, Yanshan; Li, Yuran; Vasiliades, Michalis A.; Chen, Sining; Zhang, Cheng; Gui, Rongrong; Wang, Qiang; Zhu, Tingyu; Efstathiou, Angelos M. (2019)
      There are very few catalysts reported so far to withstand poisoning by the co-presence of SO2, HCl and H2O in the flue gas stream for the NH3-SCR. The purpose of this work was to report for the first time, to the best of ...