Effects of oxygen functional groups on the enhancement of the hydrogen spillover of Pd-doped activated carbon

Dual Catalytic Activity of Palladium Doped with a Rhodium Complex in a One‐pot, Four Step Process

“…Despite the fact that metals have been a key component in catalysis since its birth, methods for affecting their elementary properties and thus also their catalytic activity have been limited, and have included co‐chemisorption of molecules, which are not substrate molecules, alloying the metal with another metal,1 downsizing to the nanoscale,2 affecting the metal particle through their interaction with their support 3. Recently we have introduced a novel approach to that challenge: Doping the metal with molecules 4.…”

Selective 1,3-butadiene hydrogenation by gold nanoparticles deposited & precipitated onto nano-carbon materials

“…Notice that this capability is not directly related with the amount of nitrogen surface groups exposed in the carbonaceous supports (for instance comparing GO 450 and GO 600 ), but the key point to explain these spillover differences should be associated with the previously discussed nature of the generated species. Chung et al 52 postulated that the oxygen functional groups facilitated the diffusion of the surface spillover H atoms rather than providing adsorption sites. Moreover the surface diffusion is enhanced by the continuous network of these oxygen groups, which results in several strong adsorption sites.…”

ChemInform Abstract: Dual Catalytic Activity of Palladium Doped with a Rhodium Complex in a One‐Pot, Four Step Process.

“…Preparation of the [Rh]@Pd catalyst: Synthesis of the catalyst:R h atoms (9 10 À4 mol) in the form of [(RhClCOD) 2 ]( COD = cyclooctadiene) were placed in ar ound bottom flask along with TPPS (triphenylphosphine-3-sulfonic acid sodium salt, 2.7 10 À3 mol) and dissolved with methanol (55 mL). The mixture was stirred overnight at 55 8Cand evaporated to dryness, resulting in [Rh(TPPS) 3 Cl], denoted [Rh] for short. Entrapment of [Rh] in Pd:[ Rh] was dissolved in triply distilled water (160 mL) and then PdCl 2 (9 10 À3 mol) was added, the temperature was set to 40 8Ca nd Zn granules (0.01 mol) were added.…”

“…Despite the fact that metals have been ak ey component in catalysis since its birth, methods for affecting their elementary properties and thus also their catalytic activityh ave been limited, and have included co-chemisorption of molecules, which are not substrate molecules, alloyingt he metal with another metal, [1] downsizing to the nanoscale, [2] affecting the metal particle through their interaction with their support. [3] Recently we have introduced an ovel approach to that challenge:D oping the metal with molecules. [4] The metals doping methodology,w hich has been developed in the past decade, gave rise to the ability of merging properties from the very rich libraryo fs everal tens of millions of organic molecules with the rather limited library of metals, resulting in the formation of new metallic hybrids, denoted molecule@metal, with new or improved properties, practically wherever metals have been used.…”