Browsing by Author "Kalamaras, Christos M."
Now showing items 1-12 of 12
-
Article
Ceria-based materials for hydrogen production via hydrocarbon steam reforming and water-gas shift reactions
Polychronopoulou, Kyriaki; Kalamaras, Christos M.; Efstathiou, Angelos M. (2011)This review paper provides an overview of the use of ceria-based catalytic materials towards the industrial hydrogen production via the hydrocarbon steam reforming and the water-gas shift reaction routes with a focus on ...
-
Article
The effect of La3+, Ti4+ and Zr4+ dopants on the mechanism of WGS on ceria-doped supported Pt catalysts
Petallidou, Klito C.; Kalamaras, Christos M.; Efstathiou, Angelos M. (2014)Platinum nanoparticles supported on single CeO2 and TiO 2 metal oxides and Ce0.8Ti0.2O 2-δ solid solution were prepared to investigate the effect of Ti4+-doping of ceria on important mechanistic and kinetic aspects of the ...
-
Article
The effect of La3+-doping of CeO2 support on the water-gas shift reaction mechanism and kinetics over Pt/Ce1-xLaxO2-δ
Kalamaras, Christos M.; Petallidou, Klito C.; Efstathiou, Angelos M. (2013)Platinum nanoparticles (dPt=1.0-1.2nm) supported on single CeO2 and La2O3 metal oxides and Ce0.8La0.2O2-δ solid solution were prepared to investigate for the first time the effect of La3+-doping of ceria on important ...
-
Article
Effects of reaction temperature and support composition on the mechanism of water - Gas shift reaction over supported-Pt catalysts
Kalamaras, Christos M.; Gonzalez, I. D.; Navarro, R. M.; Fierro, José Luis García; Efstathiou, Angelos M. (2011)The present work reports on a detailed study of the effect of support chemical composition and reaction temperature on the mechanism of the water-gas shift (WGS) reaction over supported-Pt catalysts. The effect of the same ...
-
Article
Kinetic and mechanistic studies of the water-gas shift reaction on Pt/TiO2 catalyst
Kalamaras, Christos M.; Panagiotopoulou, P.; Kondarides, D. I.; Efstathiou, Angelos M. (2009)A detailed kinetic and mechanistic study of the water-gas shift (WGS) reaction on a 0.5 wt% Pt/TiO2 catalyst has been carried out. The dependence of kinetic reaction rate on the partial pressures of reactants (CO, H2O) and ...
-
Article
Mechanistic aspects of the water-gas shift reaction on alumina-supported noble metal catalysts: In situ DRIFTS and SSITKA-mass spectrometry studies
Olympiou, G. G.; Kalamaras, Christos M.; Zeinalipour-Yazdi, Constantinos D.; Efstathiou, Angelos M. (2007)Steady-state isotopic transient kinetic analysis (SSITKA) experiments coupled with mass spectrometry were performed for the first time to study essential mechanistic aspects of the water-gas shift (WGS) reaction over ...
-
Article
Mechanistic studies of the water-gas shift reaction over Pt/Ce xZr1-xO2 catalysts: The effect of Pt particle size and Zr Dopant
Kalamaras, Christos M.; Dionysiou, Dionysios Demetriou D.; Efstathiou, Angelos M. (2012)A series of y wt % Pt/CexZr1-xO2 catalysts (y = 0.1, 0.5, and 1.0
-
Article
Re-evaluating selectivity as a determining factor in peroxidative methane oxidation by multimetallic copper complexes1
Palomas, David; Kalamaras, Christos M.; Haycock, Peter; White, Andrew J. P.; Hellgardt, Klaus; Horton, Andrew; Crimmin, Mark R. (2015)
-
Article
"Redox" vs "associative formate with -OH group regeneration" WGS reaction mechanism on Pt/CeO2: Effect of platinum particle size
Kalamaras, Christos M.; Americanou, Sofia; Efstathiou, Angelos M. (2011)A series of x wt.% Pt/CeO2 catalysts (x = 0.1-2.0) was prepared to investigate for the first time the effect of Pt particle size on important kinetic and mechanistic aspects of the water-gas shift (WGS) reaction, namely ...
-
Article
Selective catalytic reduction of NO by H2/C3H6 over Pt/Ce1-xZrxO2-Δ: The synergy effect studied by transient techniques
Kalamaras, Christos M.; Olympiou, G. G.; Pârvulescu, V. I.; Cojocaru, B.; Efstathiou, Angelos M. (2017)A series of Pt/CexZr1-xO2-δ(x = 0.4–0.6) solids were synthesized and evaluated for the SCR of NO under lean burn conditions (2.5 vol% O2) using C3H6and H2as reducing agents. SSITKA-Mass Spectrometry, SSITKA-DRIFTS and other ...
-
Article
Selective catalytic reduction of NOx by hydrogen (H2-SCR) on WOx-promoted CezZr1-zO2 solids
Väliheikki, A.; Petallidou, Klito C.; Kalamaras, Christos M.; Kolli, T.; Huuhtanen, M.; Maunula, T.; Keiski, R. L.; Efstathiou, Angelos M. (2014)The selective catalytic reduction of NOx by H2 (H2-SCR) under strongly oxidizing conditions (520ppm NOx/1% H2/5% O2/10% CO2/He
-
Article
The water-gas shift reaction on Pt/γ-Al2O3 catalyst: Operando SSITKA-DRIFTS-mass spectroscopy studies
Kalamaras, Christos M.; Olympiou, G. G.; Efstathiou, Angelos M. (2008)Steady-state isotopic transient kinetic analysis (SSITKA) experiments coupled with in situ DRIFTS and mass spectrometry (operando) were performed for the first time to study essential mechanistic aspects of the water-gas ...