Synthesis of Supported Catalysts by Dry Impregnation in Fluidized Bed - Archive ouverte HAL Access content directly
Journal Articles Chemical Engineering Research and Design Year : 2007

Synthesis of Supported Catalysts by Dry Impregnation in Fluidized Bed

Abstract

The synthesis of catalytic or not composite materials by dry impregnation in fluidized bed is described. This process can be carried out under mild conditions from solutions of organometallic precursors or colloidal solutions of preformed nanoparticles giving rise to reproducible metallic nanoparticles containing composite materials with a high reproducibility. The adequate choice of the reaction conditions makes possible to deposit uniformly the metal precursor within the porous matrix or on the support surface. When the ratio between the drying time and the capillary penetration time (tsec/tcap) is higher than 10, the impregnation under soft drying conditions leads to a homogeneous deposit inside the pores of the particles of support. The efficiency of the metal deposition is close to 100%, and the size of the formed metal nanoparticles is controlled by the pores diameter. Finally, some of the presented composite materials have been tested as catalysts: iron-based materials were used in carbon-nanotubes synthesis, while Pd and Rh composite materials have been investigated in hydrogenation reactions.
Fichier principal
Vignette du fichier
Barthe_1583.pdf (677.7 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03593508 , version 1 (02-03-2022)

Identifiers

Cite

Laurie Barthe, Serge Desportes, Mehrdji Hemati, Karine Philippot, Bruno Chaudret. Synthesis of Supported Catalysts by Dry Impregnation in Fluidized Bed. Chemical Engineering Research and Design, 2007, 8 (6), pp.767-777. ⟨10.1205/cherd06140⟩. ⟨hal-03593508⟩
31 View
74 Download

Altmetric

Share

Gmail Facebook X LinkedIn More