Palladium Nanoparticles Supported on Nitrogen‐Doped Carbon Nanotubes as a Release‐and‐Catch Catalytic System in Aerobic Liquid‐Phase Ethanol Oxidation

Abstract

Pd nanoparticles supported on carbon nanotubes were applied in the selective oxidation of ethanol in the liquid phase. The characterization of the surface and bulk properties combined with the catalytic tests indicated the dissolution and redeposition of Pd under the reaction conditions. A dynamic interplay within the Pd life cycle was identified to be responsible for the overall reactivity. Nitrogen‐doped carbon nanotubes were found to act as an excellent support for the Pd catalyst system by efficiently stabilizing and recapturing the Pd species, which resulted in high activity and selectivity to acetic acid.

Effect of Post‐Treatment on Structure and Catalytic Activity of CuCo‐based Materials for Glycerol Oxidation

“…Similar observations in terms of re‐deposition were observed by Dong et al. where Pd dissolution and re‐deposition on carbon nanotubes was reported . Indeed, it is reported in the literature that CuO species used for direct C−H arylation and C−S cross‐coupling reactions undergo leaching and catalytically active species are formed in the solution.…”

Spectroelectrochemical studies on the effect of cations in the alkaline glycerol oxidation reaction over carbon nanotube-supported Pd nanoparticles

“…The preparation of the two catalysts Pd/NCNT and Pd/OCNT has been published elsewhere [ 34 – 35 41 ]. In brief, the oxygen- and subsequent nitrogen-functionalization of the purified and washed CNTs (Baytubes C 150 P, washed in 1.5 M HNO 3 ) was performed by HNO 3 vapor treatment at 473 K for 48 h. Then, the obtained O-functionalized CNTs were exposed to 10 vol % of NH 3 /He at 673 K for 6 h to obtain NCNTs.…”

Directing nitrogen-doped carbon support chemistry for improved aqueous phase hydrogenation catalysis

“…[22][23][24][25][26] Furthermore, N-doping can also lead to improved oxidation and catalyst stability. 27 Using HTC to produce carbon materials is also attractive with respect to directing material properties (e.g. surface chemistry, porosity etc.)…”