Zobrazeno 1 - 10
of 20
pro vyhledávání: '"George D. Panagiotou"'
Autor:
Antonios Tribalis, George D. Panagiotou, Kyriakos Bourikas, Labrini Sygellou, Stella Kennou, Spyridon Ladas, Alexis Lycourghiotis, Christos Kordulis
Publikováno v:
Catalysts, Vol 6, Iss 1, p 11 (2016)
Nickel catalysts are the most popular for steam reforming, however, they have a number of drawbacks, such as high propensity toward coke formation and intolerance to sulfur. In an effort to improve their behavior, a series of Ni-catalysts supported o
Externí odkaz:
https://doaj.org/article/02d1b2d4e0934f38bbf55bdebc485acd
Autor:
Emmanouil Simianakis, Christos Kordulis, Kyriakos Bourikas, Eleana Kordouli, Mantha Gousi, George D. Panagiotou, Alexis Lycourghiotis, Spyros Ladas
Publikováno v:
Catalysis Today. 355:903-909
Following the one step co-precipitation technique we have synthesized a series of Ni-Zn catalysts supported on alumina. The series involves one non-promoted sample containing 60 wt % Ni and three zinc promoted samples containing 1, 2 and 5 wt % Zn an
Autor:
Christos Kordulis, José Luis García Fierro, Panagiotis Platanitis, Kyriakos Bourikas, George D. Panagiotou, Alexis Lycourghiotis
Publikováno v:
Reaction Kinetics, Mechanisms and Catalysis. 120:527-541
The present work deals with the optimization of the preparation method for the synthesis of unpromoted molybdenum catalysts supported on titania. Four methodologies have been followed: equilibrium–deposition–filtration (EDF), wet impregnation (WI
Autor:
Alexis Lycourghiotis, Angelos G. Kalampounias, George Tsilomelekis, Christos Kordulis, George D. Panagiotou, Kyriakos Bourikas, Antonios Tribalis, Soghomon Boghosian
Publikováno v:
The Journal of Physical Chemistry C. 118:11319-11332
The pH and temperature evolution of the molecular configuration of oxo-tungsten(VI) species deposited on TiO2 by equilibrium deposition filtration and the temperature evolution of the samples texture are studied using in situ Raman spectroscopy, DR s
Autor:
George D. Panagiotou, Kyriakos Bourikas, Alexis Lycourghiotis, Maria D. Kamitsou, Kostas S. Triantafyllidis, Christos Kordulis
Publikováno v:
Applied Catalysis A: General. 474:224-229
The transformation of α-limonene into p -cymene over oxide catalysts (γ-Al 2 O 3 , TiO 2 , SiO 2 , MCM-41) has been studied under H 2 and He atmosphere in the temperature range 200–300 °C using a fixed bed micro-reactor working under atmospheric
Autor:
Alexis Lycourghiotis, Mariza N. Alberti, John Kyriakopoulos, Kyriakos Bourikas, Christos Kordulis, Kostas S. Triantafyllidis, George D. Panagiotou, Manolis D. Tzirakis, Michael Orfanopoulos, Argyro T. Papastavrou
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 381:9-15
A series of C 60 catalysts supported on MCM-41 was prepared for the singlet oxygen-mediated oxidation of alkenes to the corresponding hydroperoxides (ene or Schenck reaction). The one-step wet impregnation method, followed by heating at 180 °C, was
Autor:
Yiannis Deligiannakis, George Tsilomelekis, Panagiota Stathi, Angelos G. Kalampounias, Kyriakos Bourikas, Alexis Lycourghiotis, Soghomon Boghosian, Christos Kordulis, George D. Panagiotou
Publikováno v:
Physical chemistry chemical physics : PCCP. 18(34)
The equilibrium deposition filtration (EDF) method, an advanced catalyst synthesis route that is based on a molecular level approach, can be used for tailoring the oxometallic phase deposited on a porous oxide support. Here, the EDF method is used fo
Autor:
Michael Orfanopoulos, Mariza N. Alberti, Kostas S. Triantafyllidis, Kyriakos Bourikas, John Kyriakopoulos, Manolis D. Tzirakis, Alexis Lycourghiotis, Christos Kordulis, Sofia Giannakaki, George D. Panagiotou
Publikováno v:
Applied Catalysis B: Environmental. :36-48
A series of C 60 catalysts supported on MCM-41 was prepared in the context of developing a highly active heterogeneous catalytic system for the singlet oxygen-mediated oxidation of organic substrates. Successive incipient wetness impregnation was use
Autor:
Theano Petsi, George D. Panagiotou, Christos Kordulis, Kyriakos Bourikas, Alexis Lycourghiotis
Publikováno v:
Journal of Catalysis. 262:266-279
An integrated work concerning the interfacial chemistry of the impregnation step involved in the preparation of tungsten(VI) supported titania catalysts is presented. Specifically, we investigated the mode of interfacial deposition of the W(VI) oxo-s
Autor:
Christos S. Garoufalis, Kyriakos Bourikas, Athanassios Tsevis, Alexis Lycourghiotis, Theano Petsi, Christos Kordulis, N. Spanos, George D. Panagiotou
Publikováno v:
Advances in Colloid and Interface Science. 142:20-42
In this article the “titanium oxide/electrolyte solution” interface is studied by taking in advantage the recent developments in the field of Surface and Interface Chemistry relevant to this oxide. Ab-initio calculations were performed in the fra