Recursos de colección

RUA (124.683 recursos)

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INV - GEPE - Artículos de Revistas

Mostrando recursos 1 - 2 de 2

  1. Enzyme mediated synthesis of polypyrrole in the presence of chondroitin sulfate and redox mediators of natural origin

    Grijalva-Bustamante, Génesis Adilene; Evans-Villegas, Andrés Gerardo; Castillo-Castro, Teresa del; Castillo-Ortega, María Mónica; Cruz-Silva, Rodolfo; Huerta Arráez, Francisco; Morallon, Emilia
    Polypyrrole (PPy) was synthesized by enzyme mediated oxidation of pyrrole using naturally occurring compounds as redox mediators. The catalytic mechanism is an enzymatic cascade reaction in which hydrogen peroxide is the oxidizer and soybean peroxidase, in the presence of acetosyringone, syringaldehyde or vanillin, acts as a natural catalysts. The effect of the initial reaction composition on the polymerization yield and electrical conductivity of PPy was analyzed. Morphology of the PPy particles was studied by scanning electron microscopy and transmission electron microscopy whereas the chemical structure was studied by X-ray photoelectron and Fourier transformed infrared spectroscopic techniques. The redox mediators increased...
    - 17-mar-2018

  2. Electrochemical regeneration of activated carbon saturated with toluene

    García Otón, Miguel; Montilla, Francisco; Lillo-Rodenas, Maria Angeles; Morallon, Emilia; Vázquez Picó, José Luis
    The electrochemical regeneration of an activated carbon, previously saturated with toluene by gas phase adsorption, was studied. Cathodic and anodic regeneration methods were analyzed using a small batch electrochemical cell. In both cases, a stripping efficiency close to 100% was obtained under appropriate conditions of potential, current, and time of electrolysis. Successive loading and regeneration cycles of the activated carbon were performed under cathodic conditions without loss of the adsorption properties of the activated carbon, thus achieving a high regeneration efficiency (close to 99%). This electrochemical method is very effective for regeneration of activated carbon compared to conventional thermal regeneration as...
    - 06-mar-2018

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