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Essential oil composition of wedelia glauca (Ort.) hoffman ex hicken from Argentina / Pedro N. Bailac in The journal of essential oil research, Vol. 17 N° 4 (Juillet-Août 2005) 

Public ISBD [article]  in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 401-402 Titre : Essential oil composition of wedelia glauca (Ort.) hoffman ex hicken from Argentina Type de document : texte imprimé Auteurs : Pedro N. Bailac, Auteur ; Alejandro D. Dellacasa, Auteur ; Marta I. Ponzi, Auteur Année de publication : 2006 Article en page(s) : pp. 401-402 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Wedelia  glauca  Asteraceae  Essential  oil  composition  Limonene  Sabinene  α-pinene Résumé : The essential oil obtained by hydrodistillation from the aerial parts of Wedelia glauca (Asteraceae) growing in San Luis, Argentina, was analyzed by GC and GC/MS. Forty-two compounds were identified. The oil was found to be rich in monoterpene hydrocarbons (near 94.9%), such as limonene (38.0%), sabinene (23.9%) and α-pinene (22.0%), which were the main components. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698942#.Ucg3MWF2_n6 [article] Essential oil composition of wedelia glauca (Ort.) hoffman ex hicken from Argentina [texte imprimé] / Pedro N. Bailac, Auteur ; Alejandro D. Dellacasa, Auteur ; Marta I. Ponzi, Auteur . - 2006 . - pp. 401-402. Génie Chimique Langues : Anglais (eng) in The journal of essential oil research > Vol. 17 N° 4 (Juillet-Août 2005) . - pp. 401-402 Mots-clés : Wedelia  glauca  Asteraceae  Essential  oil  composition  Limonene  Sabinene  α-pinene Résumé : The essential oil obtained by hydrodistillation from the aerial parts of Wedelia glauca (Asteraceae) growing in San Luis, Argentina, was analyzed by GC and GC/MS. Forty-two compounds were identified. The oil was found to be rich in monoterpene hydrocarbons (near 94.9%), such as limonene (38.0%), sabinene (23.9%) and α-pinene (22.0%), which were the main components. ISSN : 1041-2905 En ligne : http://www.tandfonline.com/doi/abs/10.1080/10412905.2005.9698942#.Ucg3MWF2_n6

Zirconia-supported Cu-KNO3 catalyst / Ileana D. Lick in Industrial & engineering chemistry research, Vol. 47 n°11 (Juin 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°11 (Juin 2008) . - p. 3834–3839 Titre : Zirconia-supported Cu-KNO3 catalyst : characterization and catalytic behavior in the catalytic combustion of soot with a NO/O2 mixture Type de document : texte imprimé Auteurs : Ileana D. Lick, Auteur ; Alfredo L. Carrascull, Auteur ; Marta I. Ponzi, Auteur ; Esther N. Ponzi, Auteur Année de publication : 2008 Article en page(s) : p. 3834–3839 Note générale : Bibliogr. p. 3838-3839 Langues : Anglais (eng) Mots-clés : Diesel  soot;  Catalytic  combustion;  NO/O2  mixture Résumé : The catalytic combustion of diesel soot was studied in the presence of catalysts: CuZrO2, KNO3ZrO2, and CuKNO3ZrO2. The catalysts were prepared by impregnation of ZrO2·nH2O into an aqueous solution of Cu(NO3)2, KNO3, or both salts simultaneously. The catalysts were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and temperature-programmed reduction (TPR). Cu(n)KNO3ZrO2 catalysts present high activity, and the value of the combustion temperature decreases 200 °C with respect to the temperature of the process without catalyzing, with Tmax values between 370 and 380 °C. The activity is associated with KNO3 presence, and the role of KNO3 can be attributed to (i) an increase of contact between soot and the surface of the catalyst and (ii) a redox reaction in which the nitrate is reduced to nitrite by reaction with carbon and again reoxidized to nitrate. The copper contribution is associated with the reaction selectivity toward CO2 formation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071194v [article] Zirconia-supported Cu-KNO3 catalyst : characterization and catalytic behavior in the catalytic combustion of soot with a NO/O2 mixture [texte imprimé] / Ileana D. Lick, Auteur ; Alfredo L. Carrascull, Auteur ; Marta I. Ponzi, Auteur ; Esther N. Ponzi, Auteur . - 2008 . - p. 3834–3839. Bibliogr. p. 3838-3839 Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°11 (Juin 2008) . - p. 3834–3839 Mots-clés : Diesel  soot;  Catalytic  combustion;  NO/O2  mixture Résumé : The catalytic combustion of diesel soot was studied in the presence of catalysts: CuZrO2, KNO3ZrO2, and CuKNO3ZrO2. The catalysts were prepared by impregnation of ZrO2·nH2O into an aqueous solution of Cu(NO3)2, KNO3, or both salts simultaneously. The catalysts were characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and temperature-programmed reduction (TPR). Cu(n)KNO3ZrO2 catalysts present high activity, and the value of the combustion temperature decreases 200 °C with respect to the temperature of the process without catalyzing, with Tmax values between 370 and 380 °C. The activity is associated with KNO3 presence, and the role of KNO3 can be attributed to (i) an increase of contact between soot and the surface of the catalyst and (ii) a redox reaction in which the nitrate is reduced to nitrite by reaction with carbon and again reoxidized to nitrate. The copper contribution is associated with the reaction selectivity toward CO2 formation. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie071194v