Properties and Characterization of Perovskite Related Oxides for Rapid CO_2 Solidification
Perovskite related oxides such as (Ba, Ca)(Fe, Co)O<SUB>3-δ</SUB>, (Sr, Ca)(Fe, Co)O<SUB>3-δ</SUB> and (Ba, Ca)(Fe, Mg)O<SUB>3-δ</SUB> have been developed as safety materials for quick solidification of CO<SUB>2</SUB> at high temperatures. The CO<SUB>2</SUB> solidification properties and microstructures were investigated. Perovskite oxides (ABO<SUB>3</SUB>) become active for CO<SUB>2</SUB> accommodation due to the lattice distortion produced by mixing different alkaline earth ions in site A and the mixed valence states by substitution of Fe ions by Cc and Mg ions in site B. The mechanism of rapid CO<SUB>2</SUB> accommodation was taken into consideration.
粉体および粉末冶金 50(11), 973-975, 2003-11-15
Japan Society of Powder and Powder Metallurgy