CoOx/sulphated-ZrO2 and CoSO4/ZrO2 as catalysts for the abatement of NO with C3H6 in the presence of excess O2 (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• CoOx/sulphated-ZrO2 and CoSO4/ZrO2 as catalysts for the abatement of NO with C3H6 in the presence of excess O2 (Articolo in rivista) (literal)

Anno

• 2003-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1016/S0926-3373(02)00168-6 (literal)

Alternative label

• Daniela Pietrogiacomi (a); Maria Cristina Campa (b); Simonetta Tuti (a); Valerio Indovina (a) (2003)
  CoOx/sulphated-ZrO2 and CoSO4/ZrO2 as catalysts for the abatement of NO with C3H6 in the presence of excess O2
  in Applied catalysis. B, Environmental (Print); ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, AMSTERDAM (Paesi Bassi)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Daniela Pietrogiacomi (a); Maria Cristina Campa (b); Simonetta Tuti (a); Valerio Indovina (a) (literal)

Pagina inizio

• 301 (literal)

Pagina fine

• 312 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.sciencedirect.com/science/article/pii/S0926337302001686 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 41 (literal)

Rivista

• Applied catalysis. B, Environmental (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 12 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 3 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• a) Dipartimento di Chimica, Università di Roma \"La Sapienza\", Piazzale Aldo Moro 5, Box no. 34 Roma 62, 00185 Rome, Italy b) Sezione \"Materiali Inorganici e Catalisi Eterogenea\" dell'Istituto di \"Metodologie Inorganiche e dei Plasmi\" (CNR), c/o Dipartimento di Chimica, Università di Roma \"La Sapienza\", Rome, Italy (literal)

Titolo

• CoOx/sulphated-ZrO2 and CoSO4/ZrO2 as catalysts for the abatement of NO with C3H6 in the presence of excess O2 (literal)

Abstract

• Cobalt sulphated-zirconia catalysts were prepared by two different methods: (i) impregnation of ZrO2 with aqueous solutions of CoSO4, and (ii) impregnation of sulphated-ZrO2 with toluene solutions of Co(acetylacetonate)2. Samples were characterized by UV-VIS diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier transformed infrared (FTIR) spectroscopy. NO reduction with C3H6 in the presence of excess O2 was studied in a flow apparatus fed by a reactant mixture of NO:C3H6:O2 = 4000:2000:20000 ppm in He. DRS and XPS results showed that the presence of sulphates prevented the formation of Co3O4. XPS indicated the presence of Co(II) alone. Irrespective of the preparation method, FTIR showed that catalysts with the same sulphate content had the same covalent sulphates. As the sulphate content in the sample increased, FTIR with CO or NO showed that the Lewis acid-strength of Co(II) increased, whereas the reducibility and heterogeneity of Co(II) decreased. Sulphated samples with a cobalt content higher than 2 atoms nm-2 were far more active and selective than the corresponding unsulphated CoOx/ZrO2. The presence of sulphates had a weaker effect on the catalytic behaviour of samples with lower Co content (< 2 atoms nm-2). We conclude that cobalt and sulphate cooperate in determining the catalytic activity and selectivity of cobalt sulphated-ZrO2 catalysts. (literal)

Editore

• ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS (Editore)

Prodotto di

• Dinamica dei processi atomici e molecolari (MD.P03.026.001) (Modulo)
• Istituto di Nanotecnologia (NANOTEC) (Istituto)

Autore CNR

• MARIA CRISTINA CAMPA (Persona)

Insieme di parole chiave

• Keywords of "CoOx/sulphated-ZrO2 and CoSO4/ZrO2 as catalysts for the abatement of NO with C3H6 in the presence of excess O2" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto di Nanotecnologia (NANOTEC) (Istituto)
• Dinamica dei processi atomici e molecolari (MD.P03.026.001) (Modulo)

Autore CNR di

• MARIA CRISTINA CAMPA (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Applied catalysis. B, Environmental (Rivista)

Editore di

• ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS (Editore)

Insieme di parole chiave di

• Keywords of "CoOx/sulphated-ZrO2 and CoSO4/ZrO2 as catalysts for the abatement of NO with C3H6 in the presence of excess O2" (Insieme di parole chiave)