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Controlled Immobilization of a Palladium Complex/Laccase Hybrid into a Macrocellular Siliceous Host.
Yang, Fangfang; Rousselot-Pailley, Pierre; Nicoletti, Cendrine; Simaan, A Jalila; Faure, Bruno; Courvoisier-Dezord, Elise; Amouric, Agnès; Charmasson, Yolande; Backov, Rénal; Tron, Thierry; Mekmouche, Yasmina.
Afiliación
  • Yang F; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Rousselot-Pailley P; College of Chemistry and Chemical Engineering, Yantai University, 264005, Yantai, China.
  • Nicoletti C; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Simaan AJ; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Faure B; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Courvoisier-Dezord E; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Amouric A; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Charmasson Y; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Backov R; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
  • Tron T; Université de Bordeaux, CNRS, CRPP, UMR5031, 115 Avenue Albert Schweitzer, 33600, Pessac, France.
  • Mekmouche Y; Aix Marseille Univ, Centrale Marseille CNRS, iSm2, 13397, Marseille, France.
Chempluschem ; 88(5): e202300156, 2023 May.
Article en En | MEDLINE | ID: mdl-37145031
This study investigates the site-directed immobilization of a hybrid catalyst bearing a biquinoline-based-Pd(II) complex (1) and a robust laccase within cavities of a silica foam to favor veratryl alcohol oxidation. We performed the grafting of 1 at a unique surface located lysine of two laccase variants, either at closed (1⊂UNIK157 ) or opposite position (1⊂UNIK71 ) of the enzyme oxidation site. After immobilization into the cavities of silica monoliths bearing hierarchical porosity, we show that catalytic activity is dependent on the orientation and loading of each hybrid, 1⊂UNIK157 being twice as active than 1⊂UNIK71 (203 TON vs 100 TON) when operating under continuous flow. These systems can be reused 5 times, with an operational activity remaining as high as 40 %. We show that the synergy between 1 and laccase can be tuned within the foam. This work is a proof of concept for controlling the organization of a heterogeneous hybrid catalyst using a Pd/laccase/silica foam.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chempluschem Año: 2023 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Chempluschem Año: 2023 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Alemania