氮氧化物（NO、NO）与强路易斯酸位的络合反应及其在 CO 和 CH 氧化中吸附物种的反应的红外光谱研究。

IR-spectroscopic study of complex formation of nitrogen oxides (NO, NO) with strong Lewis acid sites and the reactivity of adsorbed species in CO and CH oxidation.

机构信息

Chemistry Department, Moscow State University, 1 Leninskie Gory, bldg. 3, Moscow 119991 Russia; N.D. Zelinsky Institute of Organic Chemistry RAS, 47 Leninsky prosp., Moscow 119991 Russia; National University of Science and Technology "MISiS", Leninsky prosp. 4, Moscow, Russia.

Chemistry Department, Moscow State University, 1 Leninskie Gory, bldg. 3, Moscow 119991 Russia.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2023 Mar 15;289:122224. doi: 10.1016/j.saa.2022.122224. Epub 2022 Dec 7.

DOI:10.1016/j.saa.2022.122224

PMID:36508907

Abstract

The formation of complexes and transformations of nitrogen oxides (NO, NO) on strong Lewis acid sites of HZSM-5, H[Ga]ZSM-5, ZnO/HZSM-5 zeolites and dealuminated mordenites was investigated by diffuse-reflectance IR spectroscopy. Adsorbed NO that is formed by disproportionation of NO is capable of oxidizing CO and CH molecules to CO. The behaviour of strong Lewis acid sites in zeolites and cationic forms of zeolites in the NO disproportionation and CO or CH oxidation was comparatively studied.

摘要

采用漫反射红外光谱法研究了氮氧化物（NO、NO）在 HZSM-5、H[Ga]ZSM-5、ZnO/HZSM-5 沸石和脱铝丝光沸石的强路易斯酸位上形成配合物和转化的情况。由 NO 歧化形成的吸附态 NO 能够将 CO 和 CH 分子氧化为 CO。比较研究了沸石中的强路易斯酸位和沸石中的阳离子形式在 NO 歧化以及 CO 或 CH 氧化中的行为。