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Titolo:
RELATIONSHIP BETWEEN METHANE ADSORPTION AND SELECTIVE CATALYTIC REDUCTION OF NITROGEN-OXIDE BY METHANE ON GALLIUM AND INDIUM ION-EXCHANGED ZSM-5
Autore:
TABATA T; KOKITSU M; OKADA O;
Indirizzi:
OSAKA GAS CO LTD,FUNDAMENTAL RES LABS,KONOHANA KU,TORISHIMA 6-19-9 OSAKA 554 JAPAN
Titolo Testata:
Applied catalysis. B, Environmental
fascicolo: 3, volume: 6, anno: 1995,
pagine: 225 - 236
SICI:
0926-3373(1995)6:3<225:RBMAAS>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXYGEN-RICH ATMOSPHERES; NITRIC-OXIDE; HYDROCARBONS; ZEOLITE; NO;
Keywords:
GALLIUM; INDIUM; ZEOLITE; ZSM-5; METHANE; ADSORPTION HEAT; SELECTIVE CATALYTIC REDUCTION; NITROGEN OXIDE; TEMPERATURE-PROGRAMMED DESORPTION (TPD);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
27
Recensione:
Indirizzi per estratti:
Citazione:
T. Tabata et al., "RELATIONSHIP BETWEEN METHANE ADSORPTION AND SELECTIVE CATALYTIC REDUCTION OF NITROGEN-OXIDE BY METHANE ON GALLIUM AND INDIUM ION-EXCHANGED ZSM-5", Applied catalysis. B, Environmental, 6(3), 1995, pp. 225-236

Abstract

Methane adsorption on Ga ion-exchanged ZSM-5 (Ga-ZSM-5) and In ion-exchanged ZSM-5 (In-ZSM-5) was investigated by temperature-pro rammed desorption in ultra high vacuum (UHV-TPD) to clarify the difference in the influence of water vapor on the selective catalytic reduction of NOx by methane. Methane was adsorbed on Ga-ZSM-5 and In-ZSM-5, and the adsorption heats of methane were estimated to be - 98 kJ/mol and - 132 kJ/mol for Ga-ZSM-5 and In-ZSM-5, respectively. The amount of methane adsorbed on Ga-ZSM-5 decreased considerably after the preadsorption ofwater, while little decrease was observed on In-ZSM-5. These results suggest that one of the reasons that the suppression of HC-SCR activity by water vapor is less severe on In-ZSM-5 than on Ga-ZSM-5, may be that competitive water adsorption is much more inhibiting to methane adsorption on Ga-ZSM-5 than it is on In-ZSM-5.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/07/20 alle ore 05:55:28