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Monometallic catalysts based on copper phyllosilicates were actively studied in the 2000s as an alternative to the copper–chromium Adkins catalyst due to their non-toxic properties and high activity in the hydrogenation of esters under mild reaction conditions. However, studies of the past decade show that bimetallic catalysts based on copper-containing nanoparticles are the most prospective catalytic systems for the hydrogenation of diesters and short-chain esters. This review is devoted to the study of the interaction of the second metal with copper-containing nanoparticles and the effect on the catalytic characteristics. The strong interaction between the second metal (Ce, Fe, Zn, Pt, Pd, Ag, Au) and copper nanoparticles leads to an increase in TOF, high selectivity for the required alcohol and increased stability of the catalytic system. The synergistic interaction between the second metal (Ce, Fe, Zn, Pt, Pd, Ag, Au) and copper nanoparticles leads to an increase in TOF, high selectivity for the required alcohol and the enhanced stability of the catalytic system. Bimetallic systems based on noble metals are promising catalysts for the selective hydrogenation of long-chain fatty acid esters due to their improved stability toward sintering and high efficiency under mild reaction conditions. Thus, the development and research of highly effective catalysts for the hydrogenation of esters, providing high activity and selectivity of the formation of the corresponding alcohols, is an urgent task of modern heterogeneous catalysis. more...

The increasing scientific interest in the transition from noble metals (Pd, Pt, Rh) to available and environmentally friendly metals (in particular, iron) in the catalyst composition for hydrogenation and hydrogenolysis causes an urgent need to develop new approaches for the preparation and application of effective iron-containing catalytic systems. One of the most promising trends is the preparation of nanoparticles stabilized in the matrix or on the surface of diverse carriers. This review outlines the recent achievements in the application of iron-based heterogeneous catalysts in hydrogenation and hydrogenolysis processes. Special attention is paid to the study of the catalytic properties of bimetallic catalytic systems Fe–Me (Pt, Pd, Cu), as well as the interrelation between the redistribution of the electron density between metals in bimetallic nanoparticles of a noble metal (Pd, Pt) and Fe0or FexOy, and their activity/selectivity in reactions involving hydrogen: selective hydrogenation of triple CC bonds, NO2– and carbonyl groups. more...