Ni Promotion by Fe: What Benefits for Catalytic Hydrogenation?

oleh: Dichao Shi, Robert Wojcieszak, Sébastien Paul, Eric Marceau

Format: Article
Diterbitkan: MDPI AG 2019-05-01

Deskripsi

Metallic nickel is known to efficiently catalyze hydrogenation reactions, but one of its major drawbacks lies in its lack of selectivity, linked to side-reactions of hydrogenolysis and over-hydrogenation. More selective hydrogenations can be obtained upon the introduction of a second metal in combination with Ni. Fe is an interesting choice, as it is a cheap and abundant metal. This review aims at discussing the advantages and constraints brought by the preparation procedures of bimetallic supported Ni&#8211;Fe nanoparticles, and at analyzing the benefits one can draw by substituting Ni&#8211;Fe supported catalysts for Ni monometallic systems for the catalytic hydrogenation of organic molecules. Specific formulations, such as Ni<sub>75</sub>Fe<sub>25</sub>, will be singled out for their high activity or selectivity, and the various hypotheses behind the roles played by Fe will be summarized.