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Cyclic voltammetric preparation of palladium nanoparticles for ethanol oxidation reaction / Keqiang Ding in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11415-11420 Titre : Cyclic voltammetric preparation of palladium nanoparticles for ethanol oxidation reaction Type de document : texte imprimé Auteurs : Keqiang Ding, Auteur ; Guokai Yang, Auteur ; Suying Wei, Auteur Année de publication : 2011 Article en page(s) : pp. 11415-11420 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Oxidation  Nanoparticle  Preparation Résumé : By simple cyclic voltammetry of a PdO-coated glassy carbon (GC) electrode for a few cycles with the potential swept from -1.0 to -1.2 V versus saturated calomel electrode in an alkaline solution containing ethanol, a Pd particle modified GC electrode was fabricated. It showed satisfactory catalysis toward the ethanol oxidation reaction. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437840 [article] Cyclic voltammetric preparation of palladium nanoparticles for ethanol oxidation reaction [texte imprimé] / Keqiang Ding, Auteur ; Guokai Yang, Auteur ; Suying Wei, Auteur . - 2011 . - pp. 11415-11420. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11415-11420 Mots-clés : Oxidation  Nanoparticle  Preparation Résumé : By simple cyclic voltammetry of a PdO-coated glassy carbon (GC) electrode for a few cycles with the potential swept from -1.0 to -1.2 V versus saturated calomel electrode in an alkaline solution containing ethanol, a Pd particle modified GC electrode was fabricated. It showed satisfactory catalysis toward the ethanol oxidation reaction. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23437840

Electrocatalysis of sandwich-structured Pd/polypyrrole/Pd composites toward formic acid oxidation / Keqiang Ding in Industrial & engineering chemistry research, Vol. 50 N° 11 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 7077-7082 Titre : Electrocatalysis of sandwich-structured Pd/polypyrrole/Pd composites toward formic acid oxidation Type de document : texte imprimé Auteurs : Keqiang Ding, Auteur ; Haitao Jia, Auteur ; Suying Wei, Auteur Année de publication : 2011 Article en page(s) : pp. 7077-7082 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Oxidation  Composite  material  Electrocatalysis Résumé : Palladium (Pd) nanoparticle catalysts were electrodeposited onto a graphite electrode by cyclic voltammetry (CV) technique from a 0.5 M HCl solution containing 0.2 M PdCl2, and then a film of polypyrrole (PPy) was immobilized onto the as-prepared Pd-coated graphite electrode, leading to a PPy/Pd-coated electrode. Pd particles were repeatedly electrodeposited on the PPy/Pd-coated electrode to generate a Pd/PPy/Pd sandwich structured composite coated electrode. This developed composite electrode showed a satisfactory electrocatalysis toward the formic acid oxidation (FAO). The catalysis mechanism of the sandwich structured Pd/PPy/Pd composite catalyst toward FAO was also discussed on the basis of the obtained cyclic voltammograms and FT-IR spectra. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199927 [article] Electrocatalysis of sandwich-structured Pd/polypyrrole/Pd composites toward formic acid oxidation [texte imprimé] / Keqiang Ding, Auteur ; Haitao Jia, Auteur ; Suying Wei, Auteur . - 2011 . - pp. 7077-7082. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 11 (Juin 2011) . - pp. 7077-7082 Mots-clés : Oxidation  Composite  material  Electrocatalysis Résumé : Palladium (Pd) nanoparticle catalysts were electrodeposited onto a graphite electrode by cyclic voltammetry (CV) technique from a 0.5 M HCl solution containing 0.2 M PdCl2, and then a film of polypyrrole (PPy) was immobilized onto the as-prepared Pd-coated graphite electrode, leading to a PPy/Pd-coated electrode. Pd particles were repeatedly electrodeposited on the PPy/Pd-coated electrode to generate a Pd/PPy/Pd sandwich structured composite coated electrode. This developed composite electrode showed a satisfactory electrocatalysis toward the formic acid oxidation (FAO). The catalysis mechanism of the sandwich structured Pd/PPy/Pd composite catalyst toward FAO was also discussed on the basis of the obtained cyclic voltammograms and FT-IR spectra. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24199927

Sulfur poisoning and regeneration of NOx storage − reduction Cu/K2Ti2O5 catalyst / Qiang Wang in Industrial & engineering chemistry research, Vol. 49 N° 16 (Août 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7330–7335 Titre : Sulfur poisoning and regeneration of NOx storage − reduction Cu/K2Ti2O5 catalyst Type de document : texte imprimé Auteurs : Qiang Wang, Auteur ; Jiahua Zhu, Auteur ; Suying Wei, Auteur Année de publication : 2010 Article en page(s) : pp. 7330–7335 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Catalyst Résumé : A new Cu/K2Ti2O5 catalyst has been developed recently to remove NOx through the NOx storage−reduction (NSR) process. However, its NSR performance in the presence of sulfur has not been investigated. In this article, the sulfur poisoning of the NOx storage−reduction catalyst Cu/K2Ti2O5 and the corresponding deactivation mechanisms are reported for the first time. The effect of the sulfur concentration, adsorption/regeneration cycling tests, and temperature-programmed regeneration are studied. At low temperatures, the poisoning effect is negligible when the SO2 concentration is lower than 20 ppm, and the sulfated samples can be easily regenerated by 3.5% H2 at 550 °C. However, at high temperatures, the sulfur species are adsorbed on K+ sites to form K2SO4 and, consequently, induce a structure transformation from K2Ti2O5 to K2Ti6O13 nanoparticles. The structural change is reversible, and the sulfated catalyst can be regenerated by hydrogen at 650−700 °C. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1009525 [article] Sulfur poisoning and regeneration of NOx storage − reduction Cu/K2Ti2O5 catalyst [texte imprimé] / Qiang Wang, Auteur ; Jiahua Zhu, Auteur ; Suying Wei, Auteur . - 2010 . - pp. 7330–7335. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 16 (Août 2010) . - pp. 7330–7335 Mots-clés : Catalyst Résumé : A new Cu/K2Ti2O5 catalyst has been developed recently to remove NOx through the NOx storage−reduction (NSR) process. However, its NSR performance in the presence of sulfur has not been investigated. In this article, the sulfur poisoning of the NOx storage−reduction catalyst Cu/K2Ti2O5 and the corresponding deactivation mechanisms are reported for the first time. The effect of the sulfur concentration, adsorption/regeneration cycling tests, and temperature-programmed regeneration are studied. At low temperatures, the poisoning effect is negligible when the SO2 concentration is lower than 20 ppm, and the sulfated samples can be easily regenerated by 3.5% H2 at 550 °C. However, at high temperatures, the sulfur species are adsorbed on K+ sites to form K2SO4 and, consequently, induce a structure transformation from K2Ti2O5 to K2Ti6O13 nanoparticles. The structural change is reversible, and the sulfated catalyst can be regenerated by hydrogen at 650−700 °C. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie1009525