in this study the characteristics of two different kinds of la0.6sr0.4co0.2fe0.8o3 (lscf) powders, one in-house synthesized powder by a co-precipitation method and another one purchased from fuel cell materials co. (fcm co., usa), were compared. the co-precipitated powder was prepared by using ammonium carbonate as precipitant with a nh4+/no3- molar ratio of 2 and calcination at 1000c for 1 h....

Highlights 2  Single phase LaTi2Al9O19 (LTA) has been successfully synthesized by sol-gel method at relatively low temperature (1350 o C), something not previously investigated.  The sol-gel synthesized LTA shows good thermochemical stability up to 1500 o C.  Sol-gel synthesized LTA shows higher coefficients of thermal expansion than the solid state reaction synthesized LTA.  LTA is a face ...

Ordered mesoporous, crystalline MgTa(2)O(6) thin films with a mesoscopic nanoarchitecture were synthesized by evaporation-induced self-assembly (EISA) in combination with a sol-gel procedure. Utilization of novel templates, namely the block copolymers KLE (poly(ethylene-co-butylene)-b-poly(ethylene oxide)) and PIB6000 (CH(3)C(CH(3))(2)(CH(2)C(CH(3))(2))(107)CH(2)C(CH(3))(2)C(6)H(4)O(CH(2)CH(2)O...

Limestone with a particle size of less than 5 mm was rapidly calcined in high-temperature resistance furnace at 1623 K to simulate the conditions rapid calcination limestone ultra-high temperature converter. In this study, decomposition mechanism and characteristics small-sized steelmaking were investigated. The study shows that shrinking sphere or cylinder models phase boundary reaction found ...

Titanium ferrite represents one of the most promising magnetic materials that exhibits optical absorption in both ultraviolet and visible spectral regions with a range applications photocatalysis, giant magnetoresistance, sensors, high-frequency modern power supplies, etc. Here present work, we report synthesizing titanium NPs via co-precipitation method. As obtained nanopowders were characteri...

While preparation of metal oxide from metal organic frameworks (MOFs) has been widely studied, crystal growth via thermal decomposition of MOFs in a confined space is rarely investigated. We demonstrate a confinement effect on the crystal growth via pyrolysis of MOFs at high temperature. Iron containing MOF (Fe-MIL-88A) was calcined inside a SiO2. The crystalline phase, particle size, morpholog...

Quantitative determination of Br?nsted acid sites in acidic mordenite samples with varying proton concentrations has been studied using aqueous conductometric titration method. Conductometric titration of the ammonium form of mordenite with sodium hydroxide is feasible and the results indicate potential number of Br?nsted acid sites. However, Br?nsted acid sites concentration in acidic mordenit...