Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
A STUDY ON THE ROLES OF COBALT SPECIES IN NOX REDUCTION BY PROPANE ONCO-BETA
Autore:
OHTSUKA H; TABATA T; OKADA O; SABATINO LMF; BELLUSSI G;
Indirizzi:
OSAKA GAS CO LTD,DEPT RES & DEV,KONOHANA KU,TORISHIMA 6-19-9 OSAKA 554 JAPAN ENIRICERCHE SPA I-20097 SAN DONATO MILANE ITALY
Titolo Testata:
Catalysis today
fascicolo: 1-2, volume: 42, anno: 1998,
pagine: 45 - 50
SICI:
0920-5861(1998)42:1-2<45:ASOTRO>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SELECTIVE REDUCTION; NITROGEN MONOXIDE; CATALYSTS; ZEOLITES;
Keywords:
NOX; PROPANE; CO-BETA; RAMAN SPECTROSCOPY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
14
Recensione:
Indirizzi per estratti:
Citazione:
H. Ohtsuka et al., "A STUDY ON THE ROLES OF COBALT SPECIES IN NOX REDUCTION BY PROPANE ONCO-BETA", Catalysis today, 42(1-2), 1998, pp. 45-50

Abstract

The states of cobalt loaded on Beta zeolite and their roles in selective catalytic reduction of nitrogen oxide (NOx) by propane were studied. Raman spectroscopy clearly indicated that Co3O4 was formed on highly loaded samples. Spectroscopic characterization combined with catalytic activity tests showed that highly dispersed cobalt is essential forNOx reduction. Co3O4 promotes NOx reduction at low temperatures, but decreases the selectivity to NOx reduction especially at high temperatures through promotion of propane oxidation by oxygen. At ca. 100% loading, a broad band which cannot be assigned to zeolite framework nor Co3O4 was observed at around 600 cm(-1). The intensity of this band showed a strong dependency on SiO2/Al2O3 ratio, and we suggest it is related to C-O-Co species. This cobalt species was suggested to have high activity towards NOx reduction. (C) 1998 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 07/07/20 alle ore 22:32:03