Cu(I)-Cu(II) Redox Chemistry on Isolated Cu Ions for Ammonia Standard SCR

Parekh, Atish A.

Monday, June 15, 2015: 4:40 PM

406 (Lawrence Convention Center)

Atish A. Parekh¹, Shane A. Bates¹, Anuj Verma¹, Christopher Paolucci², Trunojoyo Anggara², Aleksey Yezerets³, Jeffrey T. Miller⁴, William F. Schneider², Rajamani Gounder¹, W. Nicholas Delgass¹ and Fabio H. Ribeiro¹, (1)Purdue University, USA, (2)University of Notre Dame, USA, (3)Cummins Inc., USA, (4)Argonne National Laboratory, USA.

Operando XAS, UV-Vis-NIR and Brønsted acidity measurements showed the presence of isolated Cu ions up to Cu/Al=0.2. Operando XAS measurements suggested that ammonia standard SCR operated via redox cycle involving Cu¹⁺/Cu²⁺. Proximal Brønsted acid sites generated upon reduction of Cu²⁺ to Cu¹⁺ played a crucial role in the reaction mechanism.

Extended Abstracts:

SCRAbstract-AtishParekh.pdf (102.0KB) - Extended Abstract

O-M-406-15 Cu(I)-Cu(II) Redox Chemistry on Isolated Cu Ions for Ammonia Standard SCR