Perovskites reactors

Mixed-Conducting Perovskite Reactor for High-Temperature Applications Control of Microstructure and Architecture... 

Fig. 6.8 SEM micrograph of a multilayer perovskite reactor (left) and its oxygen permeation flux with temperature compared with a thick dense membrane right)...

It is well known that dense ceramic membranes made of the mixture of ionic and electron conductors are permeable to oxygen at elevated temperatures. For example, perovskite-type oxides (e.g., La-Sr-Fe-Co, Sr-Fe-Co, and Ba-Sr-Co-Fe-based mixed oxide systems) are good oxygen-permeable ceramics. Figure 2.11 depicts a conceptual design of an oxygen membrane reactor equipped with an OPM. A detail of the ceramic membrane wall... 

Echchahed, B Kaliaguine, S Alamdari, H. Well dispersed Co° by reduction of LaCoOs perovskite. International Journal of Chemical Reactor Engineering, 2006, Volume 4, A 29. 

The majority of radionuclides (>90%) generated during in-reactor burning are retained in the U oxide matrix hence, their release should be closely related to the corrosion rate of the matrix. The release of Cs and I are generally independent of the fuel corrosion rate, and the metallic elements (Mo, Ru, Tc, Rh, Pd), Xe-Kr gas bubbles, and perovskite phases ((Ba,Sr)Zr03) may only be partly controlled by the matrix corrosion rate. 

Under some in-reactor conditions, other oxide phases, including perovskite phases (ideally AB03), may form. These are known to contain Ru, Zr, Ba, U, and Pu (Kleykamp 1985 Thomas et al. 1992)... 

Wang, h., Tablet, C., Schiestel, T., Werth, S. and Caro, J. (2006) Partial oxidation of methane to syngas in perovskite hollow fiber membrane reactor. Catalysis Communications, 7, 907-912. 

The book explores various examples of these important materials, including perovskites, zeolites, mesoporous molecular sieves, silica, alumina, active carbons, carbon nanotubes, titanium dioxide, magnesium oxide, clays, pillared clays, hydrotalcites, alkali metal titanates, titanium silicates, polymers, and coordination polymers. It shows how the materials are used in adsorption, ion conduction, ion exchange, gas separation, membrane reactors, catalysts, catalysts supports, sensors, pollution abatement, detergency, animal nourishment, agriculture, and sustainable energy applications. 

J.E. ten Elshof, H.J.M. Bouwmeester and H. Verweij, Oxidative Coupling of Methane in a Mixed-Conducting Perovskite Membrane Reactor , Appl. Catal. A, 130 195-212 (1995). 

Development of compact fuel cells, created by combining proton conductive perovskite-type oxide ceramics with metal-hydride materials, has been already proposed [1], Our group expects that the compact fuel cells can be utilized under radiation environments such as fission and fusion reactors or cosmic [2], Therefore, it is very important to understand behaviors of electron and proton conductions under radiation environments. 

Balachandran et al. (1997) SEM Perovskites (oxides of Sr, Fe, and Co) Phase formation in membrane reactors + + + Oxygen storage for methane-syn gas conversion... 

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