Πλοήγηση ανά Συγγραφέα "Douvartzides, S."
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Benzene electro-oxidation in a PEMFC for phenol and electricity cogeneration
Cai, R.; Song, S.; Ji, B.; Yang, W.; Xin, Q.; Sun, G.; Douvartzides, S.; Tsiakaras, P. (2005)In the present investigation, the electrochemically-assisted oxidation of benzene in a H2-O2 proton exchange membrane fuel cell (PEMFC), for electricity and phenol cogeneration is studied. Experiments were carried out in ... -
Bi4Cu0.2V1.8O11-delta based membrane electrochemical reactors for propane oxidation at moderate temperatures
Cai, R.; Tong, J. H.; Ji, B. F.; Yang, W. S.; Douvartzides, S.; Tsiakaras, P. (2005)Bi4Cu0.2V1.8O11-delta membrane material was synthesized by following the solid-state method. The oxygen permeation flux at 673 K was found to be 0.5 ml/cm(2) by the use of an external electric power source. The oxidation ... -
Catalytic and electrocatalytic oxidation of ethanol over a La0.6Sr0.4Co0.8Fe0.2O3 perovskite-type catalyst
Douvartzides, S.; Tsiakaras, P. (2000)The catalytic and electrocatalytic behavior of the perovskite-type La0.6Sr0.4Co0.8Fe0.2O3 catalyst was investigated during ethanol oxidation. Experiments were carried out at atmospheric pressure in a fully yttria-stabilized ... -
Catalytic Behavior of La(0.6)Sr(0.4)Co(0.8)Fe(0.2)O(3) Perovskite-Type Oxide Thin Films Deposited on YSZ During the Reaction of Ethanol Oxidation
Douvartzides, S.; Athanasiou, C.; Georgakakis, N.; Tsiakaras, P. (1998)The perovskite-type oxide La(0.6)Sr(0.4)Co(0.8)Fe(0.2)O(3) was studied as an ethanol oxidation catalyst-anode as a probable candidate for future application in Solid Oxide Fuel Cells (SOFCs). The investigation was carried ... -
Direct ethanol fuel cells based on PtSn anodes: The effect of Sn content on the fuel cell performance
Zhou, W. J.; Song, S. Q.; Li, W. Z.; Zhou, Z. H.; Sun, G. Q.; Xin, Q.; Douvartzides, S.; Tsiakaras, P. (2005)In the present work, several carbon supported PtSn catalysts with different Pt/Sn atomic ratios were synthesized and characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM) and X-ray photoelectron ... -
Electrochemical Promotion of Pt During the Oxidation of Ethanol
Douvartzides, S.; Kyriakopoulos, K.; Tsiakaras, P. (2001)The reaction of ethanol oxidation has been examined over a Pt polycrystalline film deposited on an yttria stabilized zirconia (YSZ) electrochemical reactor. Experiments were carried out at 325 degrees C at atmospheric total ... -
Energy and exergy analysis of a solid oxide fuel cell plant fueled by ethanol and methane
Douvartzides, S.; Coutelieris, F.; Tsiakaras, P. (2003)The method of exergy analysis is presented for a SOFC power plant involving external steam reforming and fueled by ethanol and methane. The optimal operation parameters of the integrated SOFC plant are specified after ... -
Ethanol And Methane Fueled Solid Oxide Fuel Cells: A Comparative Study
Douvartzides, S.; Tsiakaras, P. (2001)Ethanol and methane are compared as candidate fuels for generation of electrical power in Solid Oxide Fuel Cells (SOFCs). The thermodynamic analysis of both alternatives was undertaken considering that a SOFC operates with ... -
Ethanol Utilization In Solid Oxide Fuel Cells: A Thermodynamic Approach
Tsiakaras, P.; Demin, A.; Douvartzides, S.; Georgakakis, N. (1999)A thermodynamic analysis of electrical power generation in ethanol fueled solid oxide fuel cells (SOFCs) was made in the temperature range between 800-1200 K at atmospheric total pressure. A SOFC was considered being fed ... -
Exergetic potential of fuels: The case of a SOFC-based power plant
Coutelieris, F.; Douvartzides, S.; Song, S.; Tsiakaras, P. (2004)The method of exergy analysis is presented for a SOFC power plant involving external steam reforming and fed by methane and ethanol. The optimal operation parameters of the integrated SOFC plant are specified after minimizing ... -
Exergy analysis of a solid oxide fuel cell power plant fed by either ethanol or methane
Douvartzides, S.; Coutelieris, F.; Tsiakaras, P. (2004)The method of exergy analysis is presented for a solid oxide fuel cell (SOFC) power plant involving external steam reforming and fed by methane and ethanol. The parameters for optimal operation of the integrated SOFC plant ... -
Exergy analysis of an ethanol fuelled proton exchange membrane (PEM) fuel cell system for automobile applications
Song, S.; Douvartzides, S.; Tsiakaras, P. (2005)An integrated ethanol fuelled proton exchange membrane fuel cell (PEMFC) power system was investigated following a second law exergy analysis. The system was assumed to have the typical design for automobile applications ... -
High temperature electrochemical oxidation of ethanol over perovskite-type oxides
Tsiakaras, P.; Douvartzides, S.; Athanasiou, C.; Georgakakis, N. (2000)Ethanol oxidation was investigated in a solid electrolyte electrochemical reactor using a perovskite-type oxide La0.6Sr0.2Co0.8Fe0.2O3 as anode. Experiments were conducted between 300-750 degreesC at atmospheric pressure ... -
The importance of the fuel choice on the efficiency of a solid oxide fuel cell system
Coutelieris, F. A.; Douvartzides, S.; Tsiakaras, P. (2003)A simplified model has been formulated in order to easily and adequately determines the efficiency of a solid oxide fuel cell (SOFC) stack system, independently on the fuel choice. Simple analytical formulas for the ... -
Performance comparison of low-temperature direct alcohol fuel cells with different anode catalysts
Zhou, W. J.; Zhou, B.; Li, W. Z.; Zhou, Z. H.; Song, S. Q.; Sun, G. Q.; Xin, Q.; Douvartzides, S.; Goula, A.; Tsiakaras, P. (2004)Low-temperature polymer electrolyte membrane fuel cells directly fed by methanol and ethanol were investigated employing carbon supported Pt, PtSn and PtRu as anode catalysts, respectively. Employing Pt/C as anode catalyst, ... -
Performance of a SOFC Powered with External Ethanol Steam Reforming
Douvartzides, S.; Tsiakaras, P. (2001)In the present study, a solid oxide fuel cell (SOFC) system was considered being fed by the equilibrium products of the steam reforming of ethanol. The thermodynamic analysis of ethanol steam reforming was undertaken at ... -
Thermodynamic and economic analysis of a steam reformer-solid oxide fuel cell system fed by natural gas and ethanol
Douvartzides, S.; Tsiakaras, P. (2002)In the present work, ethanol and methane are compared as candidate fuels for solid oxide fuel cells (SOFCs). The thermodynamic analysis of both alternatives was undertaken considering that a SOFC stack operates by being ...