NOx Adsorption Site Engineering in Ru/Ba,Na–Y Zeolite

Adsorption of gas molecules is a typical application for zeolites. Interaction of adsorbed molecules with cations in zeolite frameworks is responsible for selectivity and adsorption strength. Through detailed analysis of the cation distribution in zeolite Y containing Na+, Ba2+, and Ru3+ cations by NMR and X-ray diffraction combined with adsorption studies it was possible to develop a reversible, highly performant NOx adsorbent. The results demonstrate intimate understanding of guest–host interactions can lead to rational tailoring of zeolite properties.

气态分子的吸附是沸石类材料的一种典型应用。吸附分子与沸石框架中的阳离子相互作用，是决定其选择性和吸附强度的关键。通过对含Na+、Ba2+和Ru3+阳离子的沸石Y中阳离子分布的NMR和X射线衍射分析，并结合吸附研究，成功研发了一种可逆、性能卓越的NOx吸附剂。研究结果表明，对客体-宿主相互作用的深刻理解有助于对沸石性质的理性调控。