Browsing by Subject "Reaction intermediates"

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

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

Low-temperature purification of gas streams from phenol by steam reforming over novel supported-Rh catalysts

Constantinou, D. A.; Efstathiou, Angelos M. (2010)

The purification of gas streams from phenol at low-temperatures (350-550 °C) was investigated by its reaction with steam over novel catalytic systems, namely 0.5 wt% Rh supported on Ce0.15Zr0.85O2, Ce0.15Zr0.83Mg0.02O2 and ...

Article

Low-temperature water-gas shift on Pt/Ce0.5La0.5O2 - δ: Effect of support synthesis method

Petallidou, Klito C.; Boghosian, Soghomon; Efstathiou, Angelos M. (2015)

A series of 0.5 wt% Pt/Ce0.5La0.5O2 - δ (Ce:La = 1:1) catalysts, the supports of which were prepared by different methods, namely: (i) sol-gel using citrate or oxalate as complexing agent, (ii) pechini, and (iii) urea ...

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

The protein effect in the structure of two ferryl-oxo intermediates at the same oxidation level in the heme copper binuclear center of cytochrome c oxidase

Pinakoulaki, Eftychia; Daskalakis, Vangelis; Ohta, T.; Richter, O. -M H.; Budiman, K.; Kitagawa, T.; Ludwig, B.; Varotsis, Constantinos (2013)

Identification of the intermediates and determination of their structures in the reduction of dioxygen to water by cytochrome c oxidase (CcO) are particularly important to understanding both O2 activation and proton pumping ...

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

Synthesis of new photosensitive H2BBQ2+[ZnCl4]2−/[(ZnCl)2(μ-BBH)] complexes, through selective oxidation of H2O to H2O2

Stylianou, Marios; Hadjiadamou, I.; Drouza, Chryssoula; Hayes, Sophia C.; Lariou, E.; Tantis, I.; Lianos, P.; Tsipis, Athanassios C.; Keramidas, Anastasios D. (2017)

A new two-electron photosensitizer, H2BBQ2+[ZnCl4]2−/[(ZnCl)2(μ-BBH)] (BBQ stands for 2,5-bis[bis(pyridin-2-ylmethyl)amino]-1,4-quinone and BBH stands for 2,5-bis[bis(pyridin-2-ylmethyl)amino]-1,4-hydroquinone), has been ...