1 research outputs found
Core/Shell Ruthenium–Halloysite Nanocatalysts for Hydrogenation of Phenol
Halloysite tubular nanoclay was applied
as a template for synthesis
of ruthenium core–shell composite catalysts for the first time;
50 nm diameter ceramic tubular systems with metal seeded interiors
were produced. The procedure for the metal deposition and prior halloysite
modification had a significant influence on properties of the catalyst
and, as a consequence, on its activity in hydrogenation of phenol.
Cyclohexanol was the main reaction product, but its yield depended
on the substrate conversion and nanoarchitectural composition of the
catalysts used. The maximum catalytic activity (turnover frequency,
TOF) achieved was 17 282 h<sup>–1</sup> in terms of
hydrogen uptake per surface Ru atoms. The substrate selectivity of
halloysite-based catalysts was also demonstrated at the comparative
hydrogenation of phenol and various cresols