In June 2024, The team of Professor Li Bin from SKL is entitled "Surface B-site exsolving double perovskite supported copper use for control the catalytic performance for high-temperature CO-SCR" was published in the Surfaces and Interfaces.

There is little research on the use of double perovskites (AA'BB'O₆) in the CO reduction NO. Therefore, a series of CuX/LCM catalysts which supported CuO on double perovskite were prepared by sol-gel method and initial wet impregnation method. The best activity while preserving the double perovskite structure is found in Cu5/LCM with 5 % Cu. The Cu5/R-LCM catalyst was made by performing a high-temperature exsolution treatment with LCM and loading R-LCM with CuO in order to address the issue of unstable high-temperature activity and low N₂ conversion of Cu5/LCM. The findings demonstrate that Cu5/R-LCM has a high N₂ selectivity and an excellent conversion rate of NO at high-temperatures. The interaction between Co and Cu (Cu²⁺+Co²⁺↔Cu⁺+Co³⁺) on the Cu5/R-LCM catalyst inhibits CuO from being reduced at high-temperatures and exhibits good high-temperature stability. The surface synergistic oxygen vacancies (SSOVs) created by Co and Cu can encourage the dissociation of NO and produce [N] and [O] free radicals. [N] radicals are more likely to form on the surface of Cu5/R-LCM than on Cu5/LCM, and after migrating, they will combine to form N₂, improving N₂ selectivity. These factors cause Cu5/R-LCM to have superior N₂ selectivity and high-temperature catalytic activity than Cu5/LCM.