[EN] The particular operational conditions of electrochemical cells make the simultaneous characterization of both structural and transport properties challenging. The rapidity and flexibility of the acquisition of Raman ...
Ivanova, Mariya E.; Seeger, Janka; Serra Alfaro, José Manuel; Solis Díaz, Cecilia; Meulenberg, Wilhem Albert; Fischer, Werner; Roitsch, Stefan; Buchkremer, Hans Peter(International Institute for Science, Technology & Education, 2012)
The aim of the present work is to evaluate the influence of La6W2O15 secondary phase on the properties and
integrity of La6-xWO12-δ–based membranes. Structural, microstructural and thermo–chemical study was
carried out ...
Solis Díaz, Cecilia; Escolástico Rozalén, Sonia; Haugsrud, Reidar; Serra Alfaro, José Manuel(American Chemical Society, 2011)
[EN] The conduction properties of La5.5WO12-δ have been studied by using the electrochemical conductivity relaxation technique. Exchange and diffusion coefficients have been obtained from relaxation experiments including ...
[EN] NiFe2O4-Ce0.8Gd0.2O2-delta (NFO/CGO) nanocomposite thin films were prepared by simultaneously radio-frequency (RF) magnetron sputtering of both NFO and CGO targets. The aim is the growth of a CO2-stable composite layer ...
Solis Díaz, Cecilia; Vert Belenguer, Vicente Bernardo; Balaguer Ramírez, María; Escolástico Rozalén, Sonia; Roitsch, Stefan; Serra Alfaro, José Manuel(Wiley-VCH Verlag, 2012-11)
[EN] Chromite anodes in LWO PC-SOFC: Chemically compatible LSCN/LWO symmetric cells show the high protonic conductivity and p-type electronic conductivity of LSCN in reducing atmospheres. This allows to avoid blending with ...
Escolástico Rozalén, Sonia; Solis Díaz, Cecilia; Kjolseth, C.; Serra Alfaro, José Manuel(Royal Society of Chemistry, 2014-11)
[EN] Mixed electronic-and protonic-conducting composites made up of physical mixtures of La5.5WO11.25-delta-La0.87Sr0.13CrO3-delta (LWO-LSC) have been evaluated as H-2 separation membranes for operation at temperatures ...
García Fayos, Julio; Vert Belenguer, Vicente Bernardo; Balaguer Ramírez, María; Solis Díaz, Cecilia; Gaudillere, Cyril Christian; Serra Alfaro, José Manuel(Elsevier, 2015-10-15)
[EN] This contribution introduces how the integration of biomass as fuel in power plants would balance CO2 emissions and the related role of oxygen transport membranes (OTM) on it. CO2 capture techniques could be introduced ...
Solis Díaz, Cecilia; Somacescu, Simona; Palafox, E.; Balaguer Ramírez, María; Serra Alfaro, José Manuel(American Chemical Society, 2014-10-23)
NiFe2O4 (NFO) thin films were deposited on quartz substrates by rf magnetron sputtering, and the influence of the deposition conditions on their physic-chemical properties was studied. The films structure and the high ...
Solis Díaz, Cecilia; Balaguer Ramirez, Maria; García-Fayos, Julio; Palafox, Elena; Serra Alfaro, José Manuel(Royal Society of Chemistry, 2020-07-01)
[EN] Ce0.8Gd0.2O2-delta(CGO) thin films were deposited by radio frequency (RF) magnetron sputtering and deposition temperature was changed in order to optimize the microstructure and transport properties of the obtained ...
Escolástico Rozalén, Sonia; Balaguer Ramirez, Maria; Solis Díaz, Cecilia; Toldrá-Reig, Fidel; Somacescu, S.; Gerhards, U.; Aguadero, A.; Haas-Santo, K.; Dittmeyer, R.; Serra Alfaro, José Manuel(The Royal Society of Chemistry, 2023-08-17)
[EN] Catalytic membrane reactors (CMR) based on H-2-separation membranes can improve the performance of thermodynamically-limited reactions such as high-pressure steam methane reforming, ammonia cracking, non-oxidative ...
Solis Díaz, Cecilia; Palaci, D.; Llabrés i Xamena, Francesc Xavier; Serra Alfaro, José Manuel(American Chemical Society, 2014-09-18)
In this work we studied the robustness of Ni-CPO-27 and Mg-CPO-27 metal organic frameworks (MOFs) upon cold uniaxial pressing and thermal cycling in dry and wet Ar/H-2. The preparation and operation limits for each material ...
Balaguer Ramírez, María; Solis Díaz, Cecilia; Serra Alfaro, José Manuel(American Chemical Society, 2012-03-23)
A large series of doped cerias have been
prepared by the coprecipitation method combined with
impregnation and completely characterized in order to have
an overall understanding of the structural, oxygen vacancy
concentration, ...
Solis Díaz, Cecilia; Navarrete Algaba, Laura; Serra Alfaro, José Manuel(Elsevier, 2013-10-15)
[EN] The mixed ionic-electronic conductor La2NiO4+delta was investigated as potential cathode material for protonic conducting solid oxide fuel cells (PC-SOFCs) based on La5.5WO11.25-delta electrolyte. Firstly the chemical ...
Balaguer Ramírez, María; Solis Díaz, Cecilia; Serra Alfaro, José Manuel(American Chemical Society, 2011)
[EN] Tb-doped ceria materials have been synthesized by the coprecipitation method. Cobalt oxide (2 mol %) has been added in order to improve the sinterability and conductivity. XRD measurements suggest that a part of the ...
Seeger, Janka; Ivanova, Mariya E.; Meulenberg, Wilhelm A.; Sebold, Doris; Stoever, Detlev; Scherb, Tobias; Schumacher, Gerhard; Escolástico Rozalén, Sonia; Solis Díaz, Cecilia; Serra Alfaro, José Manuel(American Chemical Society, 2013-09-16)
[EN] Mixed proton-electron conductors (MPEC) can be used as gas separation membranes to extract hydrogen from a gas stream, for example, in a power plant. From the different MPEC, the ceramic material lanthanum tungstate ...
[EN] Lanthanum tungstate (La6WO12) is a promising material for the development of hydrogen separation membranes, proton ceramic electrolyzer cells and protonic ceramic fuel cells due to its interesting transport properties ...
Ruf, Mischa; Solis Díaz, Cecilia; Escolástico Rozalén, Sonia; Dittmeyer, Roland; Serra Alfaro, José Manuel(Royal Society of Chemistry, 2014)
[EN] Surface exchange and diffusion coefficients of the protonic conductor Nd5.5W0.5Mo0.5O11.25-delta were obtained by means of conductivity relaxation experiments as a function of temperature, pO(2) and pH(2)O. The two-fold ...