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Kinetic Study of Heterogeneously Catalyzed Glucose Oxidation in a Stirred Cell
Liquid phase oxidation of glucose to gluconic acid using Bi promoted Pd catalysts was studied in a stirred cell. Gas‐liquid mass transfer limitations are observed at lower but not at higher rotational speeds. The conversion and the deactivation of the Pd catalyst depend on the O2 concentration in the liquid phase. With decreasing glucose concentration, the reaction rate decreases leading to higher oxygen concentration in the liquid, which deactivates the catalyst due to over‐oxidation. Severe mass transfer limitations even at low Pd loadings could be attributed to intraparticle or liquid‐to‐solid mass transfer.
Kinetic Study of Heterogeneously Catalyzed Glucose Oxidation in a Stirred Cell
Liquid phase oxidation of glucose to gluconic acid using Bi promoted Pd catalysts was studied in a stirred cell. Gas‐liquid mass transfer limitations are observed at lower but not at higher rotational speeds. The conversion and the deactivation of the Pd catalyst depend on the O2 concentration in the liquid phase. With decreasing glucose concentration, the reaction rate decreases leading to higher oxygen concentration in the liquid, which deactivates the catalyst due to over‐oxidation. Severe mass transfer limitations even at low Pd loadings could be attributed to intraparticle or liquid‐to‐solid mass transfer.
Kinetic Study of Heterogeneously Catalyzed Glucose Oxidation in a Stirred Cell
Ablasser, Cornelia (Autor:in) / Hilger, Andreas (Autor:in) / Hinrichsen, Olaf (Autor:in)
Chemie Ingenieur Technik ; 86 ; 1948-1953
01.11.2014
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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