In the present work alumina supported nickel catalysts modified oy lead were used for the selective hydrogenation of acrylonitrile to propionitrile. The unmodified nickel catalyst was not selective in this reaction. The modification of the Ni/Al203 catalyst, i.e. the preparation of Pb-Ni/A1203 catalysts was carried out by using Controlled Surface Reactions (CSRs). CSRs applied in this work are based on the reactivity of hydrogen adsorbed on the nickel. This hydrogen reacts selectively with tetraethyl lead resulting in bimetallic surface entities. Experimental results obtained both in the surface reactions Involved in the modification of the catalyst and in the study of selective hydrogenation of acrylonitrile strongly indicate that catalyst modification via CSRs is a powerful tool to design selective hydrogenation catalysts.
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry