ECI Digital Archives

Title

Rare earths, rare-earth oxides, and the ocides’ unique character: Application for environmental catalysts

Authors

Nobuhito Imanaka, Osaka UniversityFollow

Conference Dates

November 8-12, 2015

Abstract

The rare earths series will be comprehensively introduced. The difference among lanthanide, lanthanoid, and rare earths will be also clearly defined. After these lectures, the unique characteristics of rare-earth oxides will be addressed. As one of promising applications of the rare earth oxides, the oxides’ unique character of oxide anion migration in the solids will be also introduced and also for the application as the environmental catalysts.

Here, we focused on C-type cubic Gd₂O₃, and Y₂O₃ which has relatively strong basicity among rare earth elements, as a fundamental oxide to develop a novel catalyst. The rare earth (R) sites in R₂O₃ are partially replaced by another rare earth ion and barium to effectively inhibit catalyst poisoning and effectively enhancing NO direct decomposition. Especially, (Y_0.69Tb_0.30Ba_0.01)₂O_2.99+δ solid solution was succeeded in designing as the novel promising direct NO decomposition catalyst, showing a perfect NO decomposition into N₂ and O₂.

Recommended Citation

Nobuhito Imanaka, "Rare earths, rare-earth oxides, and the ocides’ unique character: Application for environmental catalysts" in "Composites at Lake Louise (CALL 2015)", Dr. Jim Smay, Oklahoma State University, USA Eds, ECI Symposium Series, (2016). https://dc.engconfintl.org/composites_all/4