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Titolo:
Photocatalytic oxidation of nitrogen oxide over titania-zeolite composite catalyst to remove nitrogen oxides in the atmosphere
Autore:
Hashimoto, K; Wasada, K; Osaki, M; Shono, E; Adachi, K; Toukai, N; Kominami, H; Kera, Y;
Indirizzi:
Osaka Municipal Tech Res Inst, Joto Ku, Osaka 5368553, Japan Osaka Municipal Tech Res Inst Osaka Japan 5368553 , Osaka 5368553, Japan Kinki Univ, Fac Sci & Engn, Dept Appl Chem, Higashiosaka, Osaka 5770818, Japan Kinki Univ Higashiosaka Osaka Japan 5770818 hiosaka, Osaka 5770818, Japan
Titolo Testata:
APPLIED CATALYSIS B-ENVIRONMENTAL
fascicolo: 3-4, volume: 30, anno: 2001,
pagine: 429 - 436
SICI:
0926-3373(20010312)30:3-4<429:POONOO>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYDROTHERMAL CRYSTALLIZATION; ANATASE; ADSORPTION; DIOXIDE; NO;
Keywords:
nitrogen oxides; photooxidation; titania-zeolite composite catalysts;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Hashimoto, K Osaka Municipal Tech Res Inst, Joto Ku, Osaka 5368553, Japan Osaka Municipal Tech Res Inst Osaka Japan 5368553 53, Japan
Citazione:
K. Hashimoto et al., "Photocatalytic oxidation of nitrogen oxide over titania-zeolite composite catalyst to remove nitrogen oxides in the atmosphere", APP CATAL B, 30(3-4), 2001, pp. 429-436

Abstract

The photooxidation of NO with oxygen over Hycom TiO2 and zeolite (A and Y form zeolite: TiO2-AZ and TiO2-YZ) composite catalysts was studied to remove NO, in the atmosphere. The photocatalytic oxidation activity of the titania in the composite catalyst in a proportion of AZ:TiO2 = 3:7 is about three times lager than that in the ban titania. The adsorption behaviors of NO and NO2 for the bare titania sample obey Langmuir adsorption equations of NO and NO2, respectively. In the titania-zeolite composite catalysts, the adsorption data indicate the increase in the amount of NO adsorption on the TiO2 phase and the decrease in the amount of NO2 adsorption, compared with the bare titania. The acceleration of NO photooxidation rate, resulting fromthe increase in the amount of NO adsorbed and the decrease in the amount of NO2 adsorbed, thus occurs on the TiO2 phase. IR spectra, when irradiatingthe catalysts with UV, showed the immediate formation of nitrate and NO2 species on the catalyst. The results lead to the conclusion that the zeolites promote the photocatalytic oxidation of NO over the titania. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 22:28:28