In this paper, montmorillonite functionalized with a Cu(II)-phenanthroline complex (Mt-CuPhen) and then exposed to heptanethiol vapors (Mt-CuPhen-HPT) was tested for the capture of halobenzenes in gas phase. The treatment of Mt-CuPhen with heptanethiol vapors produced important compositional changes involving Cu(II) reduction, oxidation of thiol to disulfide and dehydration of the mineral interlayer space. Entrapping experiments were carried out on fluorobenzene, chlorobenzene and bromobenzene at 25 and 45°C. The hybrid material proved to be very efficient for all halobenzenes and especially for fluorobenzene. Observed performances are slightly affected by temperature. Halobenzene desorption occurred even at 100°C, a temperature quite lower than that required for decomposition of Mt-CuPhen-HPT. The Mt-CuPhen-HPT hybrid material, therefore, can be reused several times and requires low energy costs for regeneration. An alternative regeneration procedure based on disulfide removal has been proposed as well. Mt-CuPhen-HPT was extensively characterized before and after halobenzenes immobilization through elemental analysis, UV-Vis measurements, thermogravimetric analyses, FTIR, NMR and X-ray absorption spectroscopies.

Tuning of halobenzenes uptake in montmorillonite from gas phase through a functionalization process involving Cu(II)-phenanthroline and heptanethiol / Castellini, Elena; Malferrari, Daniele; Bernini, Fabrizio; Bighi, Beatrice; Mucci, Adele; Sainz Diaz, Ignacio Claro; Serrano, Aida; Castro, German R.; Brigatti, Maria Franca; Borsari, Marco. - In: APPLIED CLAY SCIENCE. - ISSN 0169-1317. - 192:(2020), pp. 105642-105654. [10.1016/j.clay.2020.105642]

Tuning of halobenzenes uptake in montmorillonite from gas phase through a functionalization process involving Cu(II)-phenanthroline and heptanethiol

Castellini, Elena
;
Malferrari, Daniele;Bernini, Fabrizio;Bighi, Beatrice;Mucci, Adele;Brigatti, Maria Franca
;
Borsari, Marco
2020

Abstract

In this paper, montmorillonite functionalized with a Cu(II)-phenanthroline complex (Mt-CuPhen) and then exposed to heptanethiol vapors (Mt-CuPhen-HPT) was tested for the capture of halobenzenes in gas phase. The treatment of Mt-CuPhen with heptanethiol vapors produced important compositional changes involving Cu(II) reduction, oxidation of thiol to disulfide and dehydration of the mineral interlayer space. Entrapping experiments were carried out on fluorobenzene, chlorobenzene and bromobenzene at 25 and 45°C. The hybrid material proved to be very efficient for all halobenzenes and especially for fluorobenzene. Observed performances are slightly affected by temperature. Halobenzene desorption occurred even at 100°C, a temperature quite lower than that required for decomposition of Mt-CuPhen-HPT. The Mt-CuPhen-HPT hybrid material, therefore, can be reused several times and requires low energy costs for regeneration. An alternative regeneration procedure based on disulfide removal has been proposed as well. Mt-CuPhen-HPT was extensively characterized before and after halobenzenes immobilization through elemental analysis, UV-Vis measurements, thermogravimetric analyses, FTIR, NMR and X-ray absorption spectroscopies.
2020
192
105642
105654
Tuning of halobenzenes uptake in montmorillonite from gas phase through a functionalization process involving Cu(II)-phenanthroline and heptanethiol / Castellini, Elena; Malferrari, Daniele; Bernini, Fabrizio; Bighi, Beatrice; Mucci, Adele; Sainz Diaz, Ignacio Claro; Serrano, Aida; Castro, German R.; Brigatti, Maria Franca; Borsari, Marco. - In: APPLIED CLAY SCIENCE. - ISSN 0169-1317. - 192:(2020), pp. 105642-105654. [10.1016/j.clay.2020.105642]
Castellini, Elena; Malferrari, Daniele; Bernini, Fabrizio; Bighi, Beatrice; Mucci, Adele; Sainz Diaz, Ignacio Claro; Serrano, Aida; Castro, German R.; Brigatti, Maria Franca; Borsari, Marco
File in questo prodotto:
File Dimensione Formato  
APP CLAI SCI 2020 (B).pdf

Accesso riservato

Descrizione: articolo principale
Tipologia: Versione dell'autore revisionata e accettata per la pubblicazione
Dimensione 1.39 MB
Formato Adobe PDF
1.39 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1203461
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 8
social impact