New methods to prepare ultrafine particles of some perovskite-type oxides

Modified LaCoO3 nano-perovskite catalysts for the environmental application of automotive CO oxidation

“…Enhancement of the perovskite active catalytic surface area can also be achieved by the reduction of the grain size of the solid. Liu and his co-workers [15,16] have shown that if the particle size of the perovskite phase is controlled close to 15 nm during the perovskite synthesis process, an active surface area of 30 m 2 /g can be achieved.…”

Reduction of NO by CO over nanoscale LaCo1−xCuxO3 and LaMn1−xCuxO3 perovskites

“…Some perovskite preparation methods including microemulsion [19], citrate complexation [20], coprecipitation [21], sol-gel process [22], spray-drying [23], freeze-drying [24], and flame-hydrolysis [25], were attempted in order to improve their surface areas. We have shown recently that a large variety of perovskites can be synthesized at essentially room temperature by reactive grinding which allowed to achieve a specific surface area in excess of 100 m 2 /g [26][27][28].…”

Two‐Dimensional Modeling of Self‐Propagating High‐Temperature Synthesis of Strontium‐Doped Lanthanum Manganate

“…LSM is traditionally produced by sintering its oxides or carbonates at high temperatures (over 1200°C) for several hours, which is an energy‐intensive process. Other exotic synthesis techniques, such as coprecipitation and sol–gel, which consist of many steps and use costly raw materials, are difficult to scale up 5,6 . An economical and efficient process is needed for the synthesis of cathode materials to lower the production cost of SOFCs, which has been identified as a major component of SOFC cost 7…”

“…Other exotic synthesis techniques, such as coprecipitation and sol-gel, which consist of many steps and use costly raw materials, are difficult to scale up. 5,6 An economical and efficient process is needed for the synthesis of cathode materials to lower the production cost of SOFCs, which has been identified as a major component of SOFC cost. 7 Self-propagating high-temperature synthesis (SHS) was developed in Russia in the late 1960s and has been used to synthesize many ceramic materials including oxides, nitrides, carbides, and metal hydrides.…”