Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Ewald M. Pfaff"'
Publikováno v:
Advanced Engineering Materials. 16:1430-1436
The perovskite Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) is a mixed ionic electronic conductive ceramic and can be used as oxygen transport membrane (OTM) material for oxygen supply in high-temperature applications. For BSCF, reactive brazing in air atmosph
Publikováno v:
International Journal of Applied Ceramic Technology. 12:E13-E18
Dense and gastight dead-end tubular Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) membranes were fabricated by thermoplastic extrusion. Optimal feedstocks for the extrusion of dead-end tubular structures were obtained for a feedstock consisting of 89.83 wt% BSCF
Autor:
Christoph Neururer, Bernard Grobéty, Roberto Morkis Junior, Mehdi Salehi, Carlos Perez Bergmann, Thomas Graule, F. Clemens, Stefan Diethelm, Ewald M. Pfaff
Publikováno v:
Journal of Membrane Science. 443:237-245
This paper presents the processing steps for producing thin planar and tubular oxygen separation membranes by thermoplastic forming of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) with polystyrene (PS) and stearic acid (SA) as binder. The influence of powder
Publikováno v:
Chemical Engineering & Technology. 35:455-463
In the last years, a lot of ceramic materials were developed that, at higher temperatures, have a high electrical conductivity and a high conductivity of oxygen ions. Such mixed ionic/electronic conductors can be used to produce high-purity oxygen. T
Autor:
Colin Leach, Ewald M. Pfaff, Bernard Grobéty, Stefan Diethelm, Mehdi Salehi, Frank Clemens, Thomas Graule
Publikováno v:
Journal of Membrane Science. 382:186-193
Oxygen permeability measurements of Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF) disk shaped membranes fabricated by thermoplastic processing and sintered at different temperatures (1000–1100 °C), showed no influence of the grain size on the oxygen permeati
Autor:
Joachim Mayer, M. Zwick, Stefan Baumann, M. Betz, D. Stöver, S. Roitsch, Wilhelm A. Meulenberg, Ewald M. Pfaff, Falk Schulze-Küppers
Publikováno v:
Journal of Membrane Science. 359:102-109
Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3− δ (BSCF) exhibits high oxygen permeability, which is why it is being discussed for gas separation (oxygen transport membrane, OTM) in zero-emission power plants using oxyfuel technology when the membrane is operate
Autor:
Markus Zwick, Christoph Broeckmann, Ewald M. Pfaff, Reinhold Kneer, Malte Förster, Stefan Engels, Dobrin Toporov, Dominik Christ, Michael Modigell
Publikováno v:
Energy Environ. Sci.. 3:198-207
The cooperative project OXYCOAL-AC aims at the development of a zero-CO2-emission coal combustion process for power generation. The scope of the research comprises a multitude of aspects. This article focuses on membrane-based air separation modules
Autor:
Helmut, Reul, Christoph, Schmitz, Ewald M, Pfaff, Cornelia, Hohlstein, Paul A, Schmidt, Günter, Rau, Pietro, Arru
Publikováno v:
The Journal of heart valve disease. 11(3)
Currently, there appears to be no detailed published information specifically describing the early 'wear-in' and stabilization periods of wear in a bileaflet mechanical heart valve. This study presents a detailed morphological description of the earl