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Catalytic wet air oxidation of p-coumaric acid overcarbon nanotubes and activated carbon / Candida Milone in Industrial & engineering chemistry research, Vol. 50 N° 15 (Août 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp 9043–9053 Titre : Catalytic wet air oxidation of p-coumaric acid overcarbon nanotubes and activated carbon Type de document : texte imprimé Auteurs : Candida Milone, Auteur ; Abdul Rahim Shahul Hameed, Auteur ; Elpida Piperopoulos, Auteur Année de publication : 2011 Article en page(s) : pp 9043–9053 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Transition  metal  Olive  Food  industry  Waste  water  Environmental  protection  Catalyst  support  Heterogeneous  catalysis  Supported  catalyst  Gold  Platinum  Cerium  oxide  Lanthanide  compound  Oxidation  Wet  air  Catalytic  reaction Résumé : p-Coumaric acid is representative of the polyphenolic fraction typically found in olive milling waste waters (OMWW). The catalytic wet air oxidation of p-coumaric acid has been investigated at 353 K at P = 2 MPa, using CeO2, Pt and Au supported on CeO2 catalysts. The influence of the metal and of the preparation method of the catalysts on the catalytic activity has been investigated. Upon addition of Pt to CeO2, the rate of oxidation of p-coumaric acid increases whereas addition of gold do not lead to a significant difference of the activity of CeO2. On all the catalysts investigated, the abatement of total organic carbon (TOC) was >80% after 300 min of reaction. Catalysts containing metallic platinum are the most effective towards the mineralization of the organic carbon to CO2 and the degree of mineralization (DM%) was higher than 50%. On CeO2 and Au-CeO2 catalysts a great contribute to the abatement of TOC is given from a significant adsorption of the organic substrates on the solid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18193885 [article] Catalytic wet air oxidation of p-coumaric acid overcarbon nanotubes and activated carbon [texte imprimé] / Candida Milone, Auteur ; Abdul Rahim Shahul Hameed, Auteur ; Elpida Piperopoulos, Auteur . - 2011 . - pp 9043–9053. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 15 (Août 2011) . - pp 9043–9053 Mots-clés : Transition  metal  Olive  Food  industry  Waste  water  Environmental  protection  Catalyst  support  Heterogeneous  catalysis  Supported  catalyst  Gold  Platinum  Cerium  oxide  Lanthanide  compound  Oxidation  Wet  air  Catalytic  reaction Résumé : p-Coumaric acid is representative of the polyphenolic fraction typically found in olive milling waste waters (OMWW). The catalytic wet air oxidation of p-coumaric acid has been investigated at 353 K at P = 2 MPa, using CeO2, Pt and Au supported on CeO2 catalysts. The influence of the metal and of the preparation method of the catalysts on the catalytic activity has been investigated. Upon addition of Pt to CeO2, the rate of oxidation of p-coumaric acid increases whereas addition of gold do not lead to a significant difference of the activity of CeO2. On all the catalysts investigated, the abatement of total organic carbon (TOC) was >80% after 300 min of reaction. Catalysts containing metallic platinum are the most effective towards the mineralization of the organic carbon to CO2 and the degree of mineralization (DM%) was higher than 50%. On CeO2 and Au-CeO2 catalysts a great contribute to the abatement of TOC is given from a significant adsorption of the organic substrates on the solid. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=18193885

K10 montmorillonite based catalysts for the growth of multiwalled carbon nanotubes through catalytic chemical vapor deposition / Candida Milone in Industrial & engineering chemistry research, Vol. 49 N° 7 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3242–3249 Titre : K10 montmorillonite based catalysts for the growth of multiwalled carbon nanotubes through catalytic chemical vapor deposition Type de document : texte imprimé Auteurs : Candida Milone, Auteur ; Manikandan Dhanagopal, Auteur ; Saveria Santangelo, Auteur Année de publication : 2010 Article en page(s) : pp. 3242–3249 Note générale : Industial Chemistry Langues : Anglais (eng) Mots-clés : K10  Montmorillonite  Catalysts  Multiwalled  Carbon  Nanotubes  Catalytic  Chemical  Vapor  Deposition Résumé : Multiwalled carbon nanotubes (MWCNT) are synthesized by isobutane decomposition at 700 °C over as-purchased and iron-loaded K10-montmorillonite catalysts. The results show that, upon reduction at 500 °C, K10 catalyzes isobutane decomposition. Few carbon fibers accompany the prevailing carbon flakes formation. Upon Na+ exchange or by increasing the reduction temperature, the activity of the clay decreases. Fe−K10 behaves as a bifunctional catalyst: on added metal sites, MWCNT preferentially form, while on the support, carbon flake formation mainly occurs. At a given metal load, the increase of the reduction temperature up to 700 °C or the use of Na+-exchanged K10 as a support generally leads to an enhancement of the selectivity to MWCNT, because of the diminishing of the support active sites. Under the present reaction conditions, Fe supported on Na+ exchanged K10 are the most active among the investigated catalysts. MWCNT copiously form, both at low and high metal load, and exhibit the highest structural order. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9018275 [article] K10 montmorillonite based catalysts for the growth of multiwalled carbon nanotubes through catalytic chemical vapor deposition [texte imprimé] / Candida Milone, Auteur ; Manikandan Dhanagopal, Auteur ; Saveria Santangelo, Auteur . - 2010 . - pp. 3242–3249. Industial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 7 (Avril 2010) . - pp. 3242–3249 Mots-clés : K10  Montmorillonite  Catalysts  Multiwalled  Carbon  Nanotubes  Catalytic  Chemical  Vapor  Deposition Résumé : Multiwalled carbon nanotubes (MWCNT) are synthesized by isobutane decomposition at 700 °C over as-purchased and iron-loaded K10-montmorillonite catalysts. The results show that, upon reduction at 500 °C, K10 catalyzes isobutane decomposition. Few carbon fibers accompany the prevailing carbon flakes formation. Upon Na+ exchange or by increasing the reduction temperature, the activity of the clay decreases. Fe−K10 behaves as a bifunctional catalyst: on added metal sites, MWCNT preferentially form, while on the support, carbon flake formation mainly occurs. At a given metal load, the increase of the reduction temperature up to 700 °C or the use of Na+-exchanged K10 as a support generally leads to an enhancement of the selectivity to MWCNT, because of the diminishing of the support active sites. Under the present reaction conditions, Fe supported on Na+ exchanged K10 are the most active among the investigated catalysts. MWCNT copiously form, both at low and high metal load, and exhibit the highest structural order. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie9018275