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Titolo:
Adsorption properties of nitrogen monoxide on silver ion-exchanged zeolites
Autore:
Zhang, WX; Jia, MJ; Yu, JF; Wu, TH; Yahiro, H; Iwamoto, M;
Indirizzi:
Jilin Univ, Dept Chem, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 chun 130023, Peoples R China Hokkaido Univ, Catalysis Res Ctr, Sapporo, Hokkaido 060, Japan Hokkaido Univ Sapporo Hokkaido Japan 060 tr, Sapporo, Hokkaido 060, Japan
Titolo Testata:
CHEMISTRY OF MATERIALS
fascicolo: 4, volume: 11, anno: 1999,
pagine: 920 - 923
SICI:
0897-4756(199904)11:4<920:APONMO>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRESSURE SWING ADSORPTION; MOLECULAR-SIEVES; REMOVAL; REDUCTION; CARBON; NOX; DESORPTION; RECOVERY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Zhang, WX Jilin Univ, Dept Chem, Changchun 130023, Peoples R China Jilin Univ Changchun Peoples R China 130023 3, Peoples R China
Citazione:
W.X. Zhang et al., "Adsorption properties of nitrogen monoxide on silver ion-exchanged zeolites", CHEM MATER, 11(4), 1999, pp. 920-923

Abstract

The adsorption properties of nitrogen monoxide (NO) on various silver ion-exchanged zeolites were examined by adsorption-desorption measurements in afixed bed flow apparatus. Both reversible (q(rev)) and irreversible (q(irr)) adsorption of NO is dependent on the aluminum content in the zeolites and the zeolite structure. The amounts of reversible and irreversible adsorption of NO per silver ion increased with decreasing aluminum content of the zeolites and were constant, independent of the ion exchange level for ZSM-5zeolites, but increased with the ion exchange level for mordenite zeolites(MOR). It was also found that the adsorption properties are dependent on the temperature and pressure of adsorption: q(irr) and q(rev) of Ag-MOR increased with decreasing adsorption temperature and increasing adsorption pressure. Furthermore, the influence of preadsorbed gases on the Ag-MOR zeolitewas investigated, and an enhancement of q(rev) was observed when NO2 was preadsorbed. The NO species adsorbed on the Ag-MOR zeolite were characterized by infrared (IR). Most of the reversibly adsorbed NO species are NOdeltaand some N2O adsorbed on Ag+, and the irreversibly adsorbed NO species aresome N2O, NOdelta+, and a small amount of NOdelta-, NO2delta+.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/04/20 alle ore 22:48:40