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Characterization and evaluation of catalytic dechlorination activity of Pd/Fe bimetallic nanoparticles / Xiangyu Wang ; Chao Chen ; Huiling Liu ; Jun Ma in Industrial & engineering chemistry research, Vol. 47 n°22 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8645–8651 Titre : Characterization and evaluation of catalytic dechlorination activity of Pd/Fe bimetallic nanoparticles Type de document : texte imprimé Auteurs : Xiangyu Wang, Auteur ; Chao Chen, Auteur ; Huiling Liu, Auteur ; Jun Ma, Auteur Année de publication : 2008 Article en page(s) : p. 8645–8651 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Dechlorination  Pd/Fe Résumé : Two kinds of Pd/Fe nanoparticles (NPs) (k-Pd/Fe NPs and p-Pd/Fe NPs) were prepared by using an aqueous solution of potassium hexachloropalladate and an ethanol solution of palladium acetate as palladization solution, respectively, through the chemical precipitation method, followed by drying in an oven under vacuum, and characterized systematically in terms of morphology (SEM), Pd loading (EDS), surface composition (XRF), specific surface area (BET), particle size (TEM), and crystal structure (XRD). Batch experiments were conducted to evaluate the catalytic dechlorination activity of the prepared Pd/Fe NPs. Evidence observed suggests that the activities of various kinds of particles used for dechlorination of chlorinated methanes including carbon tetrachloride (CT), chloroform (CF), and dichloromethane (DCM) followed the order p-Pd/Fe NPs > Fe NPs > k-Pd/Fe NPs > Micro-Fe (commercial microscale iron powder). This order was found to be dependent on the size, surface area, degree of Pd dispersion, and purity extent of metal particles. These results may provide better understanding of the effects of preparing and drying methods on the catalytic dechlorination activity of Pd/Fe NPs. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie701762d [article] Characterization and evaluation of catalytic dechlorination activity of Pd/Fe bimetallic nanoparticles [texte imprimé] / Xiangyu Wang, Auteur ; Chao Chen, Auteur ; Huiling Liu, Auteur ; Jun Ma, Auteur . - 2008 . - p. 8645–8651. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8645–8651 Mots-clés : Dechlorination  Pd/Fe Résumé : Two kinds of Pd/Fe nanoparticles (NPs) (k-Pd/Fe NPs and p-Pd/Fe NPs) were prepared by using an aqueous solution of potassium hexachloropalladate and an ethanol solution of palladium acetate as palladization solution, respectively, through the chemical precipitation method, followed by drying in an oven under vacuum, and characterized systematically in terms of morphology (SEM), Pd loading (EDS), surface composition (XRF), specific surface area (BET), particle size (TEM), and crystal structure (XRD). Batch experiments were conducted to evaluate the catalytic dechlorination activity of the prepared Pd/Fe NPs. Evidence observed suggests that the activities of various kinds of particles used for dechlorination of chlorinated methanes including carbon tetrachloride (CT), chloroform (CF), and dichloromethane (DCM) followed the order p-Pd/Fe NPs > Fe NPs > k-Pd/Fe NPs > Micro-Fe (commercial microscale iron powder). This order was found to be dependent on the size, surface area, degree of Pd dispersion, and purity extent of metal particles. These results may provide better understanding of the effects of preparing and drying methods on the catalytic dechlorination activity of Pd/Fe NPs. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie701762d

Stability of palladium-polypyrrole-foam nickel electrode and its electrocatalytic hydrodechlorination for dichlorophenol isomers / Junjing Li in Industrial & engineering chemistry research, Vol. 51 N° 48 (Décembre 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15557-15563 Titre : Stability of palladium-polypyrrole-foam nickel electrode and its electrocatalytic hydrodechlorination for dichlorophenol isomers Type de document : texte imprimé Auteurs : Junjing Li, Auteur ; Huiling Liu, Auteur ; Xiuwen Cheng, Auteur Année de publication : 2013 Article en page(s) : pp. 15557-15563 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Isomer  Electrocatalysis  Electrodes  Foam  Stability Résumé : Palladium-polypyrrole-foam nickel composite electrode (Pd/PPY(PTS)/Ni) was prepared through electrodeposited of palladium nanoparticles onto preformed electrodes (surface of electrodes was coated with potentiostatic electropolymerized polypyrrole). The stability of the fresh and used composite electrode was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). It was found that the surface state, morphology, and crystalline structure of the composite electrode were stable after 5 recycle uses. Electrocatalytic activity of the composite electrode was evaluated for the hydrodechlorination (ECH) of six kinds of dichlorophenols (DCPs). Results indicated that 2,4-DCP showed higher hydrodechlorination rate. Further, the pathway of electrochemical hydrodechlorination of six kinds of dichlorophenol isomers was investigated. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710593 [article] Stability of palladium-polypyrrole-foam nickel electrode and its electrocatalytic hydrodechlorination for dichlorophenol isomers [texte imprimé] / Junjing Li, Auteur ; Huiling Liu, Auteur ; Xiuwen Cheng, Auteur . - 2013 . - pp. 15557-15563. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 48 (Décembre 2012) . - pp. 15557-15563 Mots-clés : Isomer  Electrocatalysis  Electrodes  Foam  Stability Résumé : Palladium-polypyrrole-foam nickel composite electrode (Pd/PPY(PTS)/Ni) was prepared through electrodeposited of palladium nanoparticles onto preformed electrodes (surface of electrodes was coated with potentiostatic electropolymerized polypyrrole). The stability of the fresh and used composite electrode was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). It was found that the surface state, morphology, and crystalline structure of the composite electrode were stable after 5 recycle uses. Electrocatalytic activity of the composite electrode was evaluated for the hydrodechlorination (ECH) of six kinds of dichlorophenols (DCPs). Results indicated that 2,4-DCP showed higher hydrodechlorination rate. Further, the pathway of electrochemical hydrodechlorination of six kinds of dichlorophenol isomers was investigated. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26710593