Browsing by Subject "Carbon monoxide"

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

CO adsorption on transition metal clusters: Trends from density functional theory

Zeinalipour-Yazdi, Constantinos D.; Cooksy, A. L.; Efstathiou, Angelos M. (2008)

This work reports for the first time the trends for carbon monoxide (CO) chemisorption on transition metal clusters present in supported metal catalysts. In particular, the energetic, structural and infrared adsorption ...

Article

Detection of a photostable five-coordinate heme a3-Fe-Co species and functional implications of His384/α10 in CO-bound ba 3-cytochrome c oxidase from Thermus thermophilus

Ohta, T.; Pinakoulaki, Eftychia; Soulimane, T.; Kitagawa, T.; Varotsis, Constantinos (2004)

Resonance Raman (RR) spectra are reported for the fully reduced carbon monoxy derivative of ba3-cytochrome c oxidase from Thermus thermophilus. The RR spectra show the formation of a photolabile six-coordinate heme-CO and ...

Article

A diffuse reflectance infrared fourier-transform spectra and density functional theory study of CO adsorption on Rhγ-Al2O 3

Zeinalipour-Yazdi, Constantinos D.; Cooksy, A. L.; Efstathiou, Angelos M. (2007)

The vibrational frequencies and bond dissociation energies of carbon monoxide adsorbed to various rhodium clusters are computed, and the diffuse reflectance infrared Fourier-transform (DRIFT) spectrum of carbon monoxide ...

Article

High nuclearity structurally-related Mn supertetrahedral T4 aggregates

Skordi, Katerina; Anastassiades, Antonis; Fournet, Adeline D.; Fournet, Adeline D.; Schulze, Michael; Wernsdorfer, Wolfgang; Christou, George; Nastopoulos, Vassilios; Perlepes, Spyros P.; Papatriantafyllopoulou, Constantina; Tasiopoulos, Anastasios J. (Royal Society of Chemistry, 2021-12-04)

The simultaneous employment of 1,3-propanediol and di-2-pyridyl ketone in Mn carboxylate chemistry has provided access to three new, structurally-related [Mn24] and [Mn23] clusters. They are based on nanosized supertetrahedal ...

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

The phenol steam reforming reaction towards H2 production on natural calcite

Constantinou, D. A.; Fierro, José Luis García; Efstathiou, Angelos M. (2009)

The steam reforming of phenol towards H2 production was studied in the 650-800 °C range over a natural pre-calcined (air, 850 °C) calcite material. The effects of reaction temperature, water, hydrogen, and carbon dioxide ...

Article

The steam reforming of phenol over natural calcite materials

Constantinou, D. A.; Efstathiou, Angelos M. (2009)

Five natural calcite materials of different geographical origin were studied towards the steam reforming of phenol reaction and the activity results obtained were correlated with some of their physico-chemical properties. ...

Article

Synergistic effects of crystal phases and mixed valences in La-Sr-Ce-Fe-O mixed oxidic/perovskitic solids on their catalytic activity for the NO+CO reaction

Belessi, Vassiliki C.; Bakas, Thomas V.; Costa, Costas N.; Efstathiou, Angelos M.; Pomonis, Phillippos J. (2000)

Mixed oxidic and perovskite-type materials based on the La, Sr, Ce and Fe elements were prepared using a mixture of nitrates salts and heating at 1000°C. Three groups of solids were synthesized: (i) La(1-y)Ce(y)FeO3 (y=0.2, ...

Article

Time-Resolved Resonance Raman and Time-Resolved Step-Scan FTIR Studies of Nitric Oxide Reductase from Paracoccus denitrificans: Comparison of the Heme b3-FeB Site to That of the Heme-CuB in Oxidases

Pinakoulaki, Eftychia; Varotsis, Constantinos (2003)

Time-resolved resonance Raman (TR3) and time-resolved step-scan (TRS2) FTIR spectroscopies have been used to probe the structural dynamics at the heme b3 proximal and distal sites after carbon monoxide photolysis from fully ...

Doctoral Thesis Open Access

Time-resolved step-scan FTIR studies of heme-based oxygen sensor proteins

Pavlou, Andrea G. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2014-12)

Η ανακάλυψη και ο χαρακτηρισμός νέων αιμοπρωτεϊνών αισθητήρων κατά την τελευταία δεκαετία έχει προκαλέσει το ενδιαφέρον για την κατανόηση του ρυθμιζόμενου από μια προσθετική ομάδα αίμης μηχανισμού ...