New Strategies for Obtaining Inorganic-Organic Composite Catalysts for Selective Hydrogenation

NICOLÁS CARRARA; JUAN M. BADANO; CAROLINA P. BETTI; CECILIA R. LEDERHOS; MARIANA BUSTO; CARLOS R. VERA; MONICA QUIROGA

"New Advances in Hydrogenation Processes - Fundamentals and Applications"

INTECH

Año: 2017; p. 181 - 207

Pd/composites are catalysts in which the catalytically active metal phase is located in a small layer on the support surface. The metal distribution obtained on these supports corresponds to a structure commonly known as egg-shell. This distribution is optimal for reactions that have heat or mass transfer resistances. The small thickness of the metal anioc composition, the special interaction between the hydrophobic-hydrophillic support surface and the metal species (Pd or Pt) present in the impregnating aqueous solution. Pd/composite catalysts are active and selective for the reactions of selective hydrogenation of styrene, 1-heptyne, 3-hexyne and 2,3-butanone, and enantioselective hydrogenation of ethyl pyruvate. These reactions are of interest in both academic and industrial< aspects.