Characterization of Pd-mordenite Catalysts for NO Decomposition

Oliveira, Andréa Marins de; Costilla, Ignácio; Gigola, Carlos; Baibich, Ione Maluf; Silva, Victor Teixeira da; Pergher, Sibele Berenice Castellã

Characterization of Pd-mordenite Catalysts for NO Decomposition

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dc.contributor.author	Oliveira, Andréa Marins de
dc.contributor.author	Costilla, Ignácio
dc.contributor.author	Gigola, Carlos
dc.contributor.author	Baibich, Ione Maluf
dc.contributor.author	Silva, Victor Teixeira da
dc.contributor.author	Pergher, Sibele Berenice Castellã
dc.date.accessioned	2020-06-03T01:36:34Z
dc.date.available	2020-06-03T01:36:34Z
dc.date.issued	2010-04-01
dc.description.resumo	The aim of this study was to characterize Pd catalysts supported on three different mordenite zeolites (a commercial sample and two laboratory preparations) previously tested for the NO decomposition reaction. H2 chemisorption, TPR, FTIR spectroscopy of adsorbed CO and NO, DRS UV–vis and TPD of NO were used to characterize the catalysts. After reduction at 573 K a large fraction of Pdo particles and some Pd2+ ions were found in the commercial sample and one laboratory preparation. In contrast a sample prepared with a mordenite synthesized using a natural clay was found to exhibit mainly ionic Pd. The amount of Pdo (PdO) relative to Pd2+ depends on the oxidation temperature and the metal loading. The catalysts exhibited similar levels of activity for the NO decomposition reaction at 673 K but a different selectivity to N2O. This behavior was related to differences in metal dispersion and other surface conditions that influence the formation of PdO particles.	pt_BR
dc.identifier.citation	OLIVEIRA, Andréa Marins de; COSTILLA, Ignácio; GIGOLA, Carlos; BAIBICH, Ione Maluf; SILVA, Victor Teixeira da; PERGHER, Sibele B. Castellã. Characterization of Pd-mordenite Catalysts for NO Decomposition. Catalysis Letters, [s. l.], v. 136, n. 3-4, p. 185-191, 1 abr. 2010. ISSN 1011-372X. DOI https://doi.org/10.1007/s10562-010-0323-2. Disponível em: https://link.springer.com/article/10.1007%2Fs10562-010-0323-2. Acesso em: 16 maio 2020.	pt_BR
dc.identifier.doi	10.1007/s10562-010-0323-2
dc.identifier.issn	1011-372X (print), 1572-879X (online)
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29120
dc.language	en	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Attribution-NonCommercial-NoDerivs 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/br/	*
dc.subject	Pd	pt_BR
dc.subject	Mordenite	pt_BR
dc.subject	CO and NO adsorption	pt_BR
dc.subject	TPR	pt_BR
dc.subject	TPD of NO	pt_BR
dc.title	Characterization of Pd-mordenite Catalysts for NO Decomposition	pt_BR
dc.type	article	pt_BR