Hydrogen peroxide direct synthesis / Pierdomenico Biasi in Industrial & engineering chemistry research, Vol. 49 N° 21 (Novembre 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 10627-10632 Titre : Hydrogen peroxide direct synthesis : Selectivity enhancement in a trickle bed reactor Type de document : texte imprimé Auteurs : Pierdomenico Biasi, Auteur ; Federica Menegazzo, Auteur ; Francesco Pinna, Auteur Année de publication : 2011 Article en page(s) : pp. 10627-10632 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Trickle bed reactor Hydrogen peroxide Résumé : H2O2 direct synthesis over a palladium catalyst based on sulfated ceria (Pd-CeS) has been studied in a trickle-bed reactor at ― 10 °C. The combined effect of liquid and gas flow rates was studied by independent variations. The maximum productivity and selectivity was always found at flow rate combinations intermediate within the investigated range. The reactor operated under pressure and its effect was investigated (10 and 20 bar), resulting in a significant gain in selectivity. Selectivity up to 80% has been measured at the highest pressure tested (20 bars), liquid flow rate of 2 mL/min, and 6 mL/min gas flow rate. The maximum production rate measured was 0.0035 mmol/min with 0.5 mL/min liquid flow rate and 2.7 mL/min gas flow rate. Relevance of direct water formation has been isolated by independently investigating H2O2 decomposition and hydrogenation. Results indicate directions of further performance improvements and the importance of reactor type and operation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447955 [article] Hydrogen peroxide direct synthesis : Selectivity enhancement in a trickle bed reactor [texte imprimé] / Pierdomenico Biasi, Auteur ; Federica Menegazzo, Auteur ; Francesco Pinna, Auteur . - 2011 . - pp. 10627-10632. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 21 (Novembre 2010) . - pp. 10627-10632 Mots-clés : Trickle bed reactor Hydrogen peroxide Résumé : H2O2 direct synthesis over a palladium catalyst based on sulfated ceria (Pd-CeS) has been studied in a trickle-bed reactor at ― 10 °C. The combined effect of liquid and gas flow rates was studied by independent variations. The maximum productivity and selectivity was always found at flow rate combinations intermediate within the investigated range. The reactor operated under pressure and its effect was investigated (10 and 20 bar), resulting in a significant gain in selectivity. Selectivity up to 80% has been measured at the highest pressure tested (20 bars), liquid flow rate of 2 mL/min, and 6 mL/min gas flow rate. The maximum production rate measured was 0.0035 mmol/min with 0.5 mL/min liquid flow rate and 2.7 mL/min gas flow rate. Relevance of direct water formation has been isolated by independently investigating H2O2 decomposition and hydrogenation. Results indicate directions of further performance improvements and the importance of reactor type and operation. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23447955

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