Nitrous Oxide Adsorption and Decomposition on Zeolites and Zeolite-like Materials

Molecules

Sergey F. Dunaev¹  Leonid M. Kustov¹  Alexander L. Kustov¹ 

[1] Chemistry Department, Moscow State University, 1 Leninskie Gory, Bldg. 3, 119991 Moscow, Russia;

关键词: HZSM-5 zeolite;    N₂O decomposition;    titanosilicalites;    Lewis acid sites;    diffuse-reflectance IR spectroscopy;   

DOI  :  10.3390/molecules27020398

来源: DOAJ

【 摘 要 】

Decomposition of N₂O on modified zeolites, crystalline titanosilicalites, and related amorphous systems is studied by the catalytic and spectroscopic methods. Zinc-containing HZSM-5 zeolites and titanosilicalites with moderate Ti/Si ratios are shown to exhibit a better catalytic performance in N₂O decomposition as compared with conventionally used Cu/HZSM-5 zeolites and amorphous Cu-containing catalysts. Dehydroxylation of the HZSM-5 zeolite by calcination at 1120 K results in an enhancement of the N₂O conversion. The mechanism of the reaction and the role of coordinatively unsaturated cations and Lewis acid sites in N₂O decomposition are discussed on the basis of the spectroscopic data.

【 授权许可】

Unknown