A novel nano-palladium catalyst for continuous-flow chemoselective hydrogenation reactions

On‐the‐fly Catalyst Modification: Strategy to Improve Catalytic Processes Selectivity and Understanding

“…Their base catalyst selectively saturated double and triple carbon bonds but also C=O over a wide range of substrates (Table ). We have demonstrated that Hudson's approach could be extended to other metals (e. g. Pd, Ni, Cu, Ag and Ru) and oxide supports (e. g. micrometric alumina) . The target hydrogenations were α,β ‐unsaturated aldehydes and ketones, nitrophenol and D‐xylose, demonstrating the approach's versatility.…”

The Functionality of Ion Exchange Resins for Esterification, Transesterification and Hydrogenation Reactions

“…Confirmation of hydrogenation of C ═ C double bond [95] hydrogenation MBY had 95% conversion and 99.6% selectivity for toluene and ethanol, respectively [97] removal nitrate from an aqueous solution bi-metallic catalysts embedded in a cation resin atmospheric conditions the acidity of the support increased the percentage selectivity towards N 2 as compared to an alumina catalyst the indium metallic catalyst showed more activity towards reduction of nitrate but reduced the selectivity towards N 2 when compare to Sn-based catalyst. the best catalyst when evaluating the performance was 5% Pd 2.6% Sn/ Polystyrene -divinylbenzene [84] hydrogenation and dehydration of glycerol amberlyst and Ru/C reaction temperature of 120°C and reaction pressure of 8.0 MPa the amberlyst catalyst resulted in higher dehydration of glycerol than sulphuric acid (aq), The activity of the hydrogenation of acetol on Ru/C decreased with addition of hydrochloric acid (aq).…”

“…Furthermore, a regeneration strategy was developed by employing very low H 2 flowrate at natural conditions which in turn resulted to the elimination of most of the nitrites present as contaminants. Goszewska et al [95] immobilized palladium nanoparticles on resin and used as catalyst in the hydrogenation of 6-methyl-5hepten-2-one (at 85°C and 10 bar) and 2-heptene (at 65°C and 10 bar). The confirmation of hydrogenation of C ═ C double bond was evident in the performance parameters reported.…”

Tuning Nano‐Nickel Catalyst Hydrogenation Aptitude by On‐the‐Fly Zirconium Doping

“…6.8 nm). The polymeric diffraction peaks did not change with metal anchoring, as well as with the doping, which suggests that neither affects significantly the support structure …”

“…In particular, chemoselective flow heterogeneous catalysis yields desired products without significant levels of by‐product, avoiding costly, unsustainable and time‐consuming purification processes. This feature enables flow processes to be assembled as a continuous multi‐step workflow for the synthesis of fine chemicals …”