Alkyl radicals can play an important role as intermediates in lean NOx chemistry. This type of chemistry is of relevance to the treatment of emissions from diesel engines. CN radicals have been identified as possible intermediates in a study of the catalytic reduction of propane or ethanol (under lean NOx conditions over a Cu-ZrO2 catalyst). However, monitoring radicals and/or other reactive species can involve specialized techniques. Diatomic iodine provides a model system in which the dynamics and interactions of intra-zeolite species can be probed, and where photodissociation leads to two atomic radicals. This work sheds light on how the nanoporous environment of the zeolite can affect photodissociation processes. The polar environment of the zeolite can stabilize states of the parent and photoproducts by interactions that are similar to those involving solvation.
ASJC Scopus subject areas
- Chemical Engineering(all)