Location of isolated Co2+ and (Co-O-Co)2+ in Co-MOR as investigated by means of FTIR with acetonitrile and 2,4,5-trimethylbenzonitrile as probe molecules (Articolo in rivista)

Type

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

Label

• Location of isolated Co2+ and (Co-O-Co)2+ in Co-MOR as investigated by means of FTIR with acetonitrile and 2,4,5-trimethylbenzonitrile as probe molecules (Articolo in rivista) (literal)

Anno

• 2010-01-01T00:00:00+01:00 (literal)

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

• 10.1021/jp106878s (literal)

Alternative label

• D. Pietrogiacomi, M.C. Campa, V. Indovina (2010)
  Location of isolated Co2+ and (Co-O-Co)2+ in Co-MOR as investigated by means of FTIR with acetonitrile and 2,4,5-trimethylbenzonitrile as probe molecules
  in Journal of physical chemistry. C; ACS, American chemical society, Washington, DC (Stati Uniti d'America)
  (literal)

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

• D. Pietrogiacomi, M.C. Campa, V. Indovina (literal)

Pagina inizio

• 17812 (literal)

Pagina fine

• 17818 (literal)

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

• http://pubs.acs.org/doi/abs/10.1021/jp106878s (literal)

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

• 114 (literal)

Rivista

• Journal of physical chemistry. C (Rivista)

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

• 7 (literal)

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

• 41 (literal)

Note

• ISI Web of Science (WOS) (literal)

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

• a) Dipartimento di Chimica, \"Sapienza\" Università di Roma, Piazzale Aldo Moro 5, 00185 Roma, Italy. b) Gruppo \"Materiali Inorganici e Catalisi Eterogenea\" dell'Istituto ISMN (CNR), c/o Dipartimento di Chimica, \"Sapienza\" UniVersita` di Roma, Piazzale Aldo Moro 5, 00185 Roma, Italy (literal)

Titolo

• Location of isolated Co2+ and (Co-O-Co)2+ in Co-MOR as investigated by means of FTIR with acetonitrile and 2,4,5-trimethylbenzonitrile as probe molecules (literal)

Abstract

• Co-Na-MOR and Co-H-MOR were prepared by ion-exchange of Na-MOR or H-MOR with Co(acetate)2 solutions at 350 K. In these Co-Na-MOR and Co-H-MOR samples exchanged to various extents with cobalt (Co/Al = 0.1 to 0.5), isolated Co2+ is the most abundant species, the residual cobalt being present as [Co-O-Co]2+. To find out whether isolated Co2+ and dimers [Co-O-Co]2+ were located inside or outside the zeolite channels we used as probe molecules acetonitrile (AN) and 2,4,5-trimethylbenzonitrile (TMBN), hypothesizing that AN enters the MOR main channels, whereas TMBN, having a higher steric hindrance than AN, does not enter the MOR channels, and only detects external cobalt. The comparison discriminates between internal and external cobalt. This feature was further investigated by pre-saturating Co-MOR samples with AN or TMBN and subsequently adsorbing CO or NO. FTIR spectra were run at RT on samples heated in O2 at 793 K and evacuated at the same temperature for 1 h before exposure to CO, NO, AN, or TMBN. The FTIR results demonstrate that in all Co-MOR samples, irrespective of the cobalt content, cobalt is almost exclusively located inside the mordenite channels. (literal)

Editore

• ACS, American chemical society (Editore)

Prodotto di

• Aspetti chimico fisici di processi fondamentali e reattività per la chimica sostenibile (PM.P05.004.008) (Modulo)
• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)

Autore CNR

• MARIA CRISTINA CAMPA (Persona)

Insieme di parole chiave

• Keywords of "Location of isolated Co2+ and (Co-O-Co)2+ in Co-MOR as investigated by means of FTIR with acetonitrile and 2,4,5-trimethylbenzonitrile as probe molecules" (Insieme di parole chiave)

Incoming links:

Prodotto

• Istituto per lo studio dei materiali nanostrutturati (ISMN) (Istituto)
• Aspetti chimico fisici di processi fondamentali e reattività per la chimica sostenibile (PM.P05.004.008) (Modulo)

Autore CNR di

• MARIA CRISTINA CAMPA (Persona)

Editore di

• ACS, American chemical society (Editore)

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

• Journal of physical chemistry. C (Rivista)

Insieme di parole chiave di

• Keywords of "Location of isolated Co2+ and (Co-O-Co)2+ in Co-MOR as investigated by means of FTIR with acetonitrile and 2,4,5-trimethylbenzonitrile as probe molecules" (Insieme di parole chiave)