Carbon–ceramic composites for enzyme immobilization

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Título: Carbon–ceramic composites for enzyme immobilization
Autor/es: Lathouder, Karen de | Lozano Castelló, Dolores | Linares-Solano, Angel | Wallin, Sten A. | Kapteijn, Freek | Moulijn, Jacob
Grupo/s de investigación o GITE: Materiales Carbonosos y Medioambiente
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Química Inorgánica | Delft University of Technology. Department of Chemical Technology | Dow Chemical Company
Palabras clave: Ceramic monolith | ACM monolith | Enzyme adsorption | Carbon nanofibers | Characterization
Área/s de conocimiento: Química Inorgánica | Ingeniería y Tecnología Química
Fecha de creación: 2006
Fecha de publicación: 1-feb-2007
Editor: Elsevier
Cita bibliográfica: LATHOUDER, Karen de, et al. "Carbon–ceramic composites for enzyme immobilization". Microporous and Mesoporous Materials. Vol. 99, Issues 1-2 (1 Febr. 2007). ISSN 1387-1811, pp. 216-223
Resumen: Tunable carbon nanofiber-coated monoliths as carriers for enzyme adsorption are presented. Carbon-nanofibers (CNFs) were grown on monoliths with different microstructure. ‘‘Classical’’ cordierite monoliths were compared to novel acicular mullite (ACM) monoliths, with a more open wall structure. This open structure allows for a higher CNF-loading without affecting the open structure of the monoliths. The composites were used as a carrier for lactase from Aspergillus oryzae. ACM monoliths allow for a higher CNF loading, and thus for a higher enzyme loading. Lactase adsorption per gram of carbon increases by 15–20% compared to cordierite samples. The total enzyme adsorption capacity for CNF-coated ACM and cordierite monoliths was found to be 350 and 300 mg g-1Carbon respectively. Oxidation treatment of the CNFs affected the surface chemistry, while the porosity was not affected. The growth catalyst could be removed completely from both the support and the CNFs by treatment in HCl or HNO3, without destroying the carbon structure.
Patrocinador/es: The Netherlands Organization for Scientific Research (NWO) is acknowledged for funding part of this research by means of a grant, number R74-68. The DOW Chemical Company is acknowledged for partial funding of this project.
URI: http://hdl.handle.net/10045/2654
ISSN: 1387-1811
DOI: 10.1016/j.micromeso.2006.08.039
Idioma: eng
Tipo: info:eu-repo/semantics/article
Revisión científica: si
Versión del editor: http://dx.doi.org/10.1016/j.micromeso.2006.08.039
Aparece en las colecciones:INV - MCMA - Artículos de Revistas

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