Low-Temperature Reactivity of Zn+ Ions Confined in ZSM-5 Zeolite toward

       Carbon Monoxide Oxidation: Insight from in Situ DRIFT and ESR Spectroscopy

            Guodong Qi , Jun Xu , Jihu Su , Jiafu Chen , Xiumei Wang , and Feng Deng

    We report the low-temperature catalytic reactivity of Zn+ ions confined in ZSM-5 zeolite toward CO oxidation. In situ DRIFT and ESR spectroscopy demonstrated that molecular O2 is readily activated by Zn+ ion to produce O2–species at room temperature (298 K) via facile electron transfer between Zn+ ion and O2 and that the formation of the active O2– species is responsible for the high activity of the ZnZSM-5 catalyst toward CO oxidation.

http://pubs.acs.org/doi/abs/10.1021/ja400757c