Journal Article
Science, vol. 358, iss. 6369, pp. 1419-1423, 2017
Authors
Lei Nie, Donghai Mei, Haifeng Xiong, Bo Peng, Zhibo Ren, Xavier Isidro Pereira Hernandez, Andrew DeLaRiva, Meng Wang, Mark H. Engelhard, Libor Kovarik, Abhaya K. Datye, Yong Wang
Abstract
Stable catalysts through steaming
The lifetime of catalysts that convert automotive exhaust pollutants can be increased by lowering their operating temperature, which helps to prevent deactivation caused by the active metal atoms agglomerating into larger, less active particles. Nie
et al.
show that a thermally stable catalyst, atomically dispersed Pt
2+
on CeO
2
, can become active for CO oxidation at 150°C after steam treatment at 750°C. In studies with simulated vehicle exhaust, this catalyst treatment also improves its oxidation activity for other exhaust components such as hydrocarbons.
Science
, this issue p.
1419
