Mesoporous perovskites

The cathode must also display good electrocatalyst activity for the reduction of O2 and offer good electronic conductivity, since it must serve as the current collector. The cathode material most commonly used is porous or mesoporous perovskite manganite with the formula Lai xSr cMn03 (0.10cathode reaction is as follows ... 

Table 3.2 Structural parameters of the nanocast mesoporous perovskites obtained by performing N2 physisorption analysis at -196°C...

Figure 3.3 TEM images of nanocast mesoporous perovskites synthesized using ordered mesoporous KIT-6 siiica as hard tempiate.

Figure 3.4 (a) Wide-angle powder XRD patterns of mesoporous perovskite oxides synthesized using ordered mesoporous KIT-6 aged at 100°C as the hard template. The lowest curve corresponds to the LaMnOs perovskite synthesized without using citric acid. 

S. (2012) Kinetics of methanol oxidation over mesoporous perovskite catalysts. ChemCatChem, 4 (3), 387-394. 

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. 

Yi et al. reported LaCoOa perovskite NPs confined in SBA-15 silica by a microwave-assissted process with a La-Co citrate complex precursor (Yi et al., 2005). This method allows the incorporation of up to 60 wt% LaCoOa perovskites into the mesopores. The obtained material exhibited high catalytic activity in the complete methane oxidation. 

Wagner T, Hennemann J, Kohl C-D, Tiemann N (2011) Photocatalytic ozone sensor based on mesoporous indium oxide influence of the relative humidity on the sensing performance. Thin Sohd Films 520 918-921 Wakamura K (2005) Empirical relationships for ion conduction based on vibration amplitude in perovskite-type proton and superionic conductors. J Phys Chem Solids 66 133-142 Wang W, Virkar AV (2005) Ionic and electron-hole conduction in BaZr, Y j,03 d by 4-probe DC measurements. J Power Sources 142(1-2) 1-9... 

---