Modificación de bentonita con Al-Fea partir de suspensiones concentradas de arcilla

RESUMEN Se reporta la modificacion de una bentonita colombiana con la especie mixta de Al-Fe partiendo de suspensiones de arcilla al 10 y 50% p/p, asi como del material en seco, empleando como fase dispersante agua o acetona. Los solidos obtenidos se caracterizaron con las tecnicas de absorcion atomica, capacidad de intercambio cationico residual y difraccion de rayos X. Se evaluo la actividad catalitica frente a la reaccion de oxidacion de fenol con peroxido de hidrogeno en medio acuoso diluido. Los resultados indican que los solidos preparados en suspension concentrada presentan propiedades estructurales, texturales y cataliticas comparables con los solidos modificados en suspension diluida (2% p/p). PALABRAS CLAVE: modificacion de bentonita, catalizador, oxidacion de fenol y arcilla.

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