Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Chem Commun (Camb). 2021 Feb 7;57(11):1312-1315. doi: 10.1039/d0cc07511f. Epub 2021 Jan 22.
NO is typically present as a trace gas in chemical processes, but its emission causes serious environmental issues. We herein demonstrate that ion-exchanged mordenite zeolites (framework code: MOR) can exhibit high capacities for NO adsorption under ambient conditions. In particular, a natural MOR zeolite gives an adsorption capacity as high as 0.34 mmol-NO per g-zeolite (1 atm, 25 °C), representing the best performing material among all zeolite-based adsorbents reported so far. The results contribute toward a comprehensive understanding of the structure-activity relationship and offer insights to establishing a zeolite-based adsorption system for enriching or removing NO.
NO 通常作为痕量气体存在于化学过程中，但它的排放会导致严重的环境问题。在此，我们证明了离子交换丝光沸石（骨架代码：MOR）在环境条件下可以表现出对 NO 的高吸附容量。特别是，天然 MOR 沸石的吸附容量高达 0.34mmol-NO/g-zeolite（1atm，25°C），这是迄今为止报道的所有沸石基吸附剂中性能最好的材料。该结果有助于全面了解结构-活性关系，并为建立基于沸石的富集或去除 NO 的吸附系统提供了思路。
