2 results about "Synthetic ligands" patented technology

The present application relates to the technical field of catalyst, in particular to a synthesis method of active site adjustable bimetallic catalyst.The synthesis method of active site adjustable bimetallic catalyst comprises the following steps: synthesizing ligand;preparing bimetallic complex;limiting domain pyrolysis carbonization.The present application first takes p-tert-butylphenol, polyformaldehyde and bis(2-pyridylmethyl)amine as raw materials, reacts in a mixed solvent to synthesize ligand Hbpbp, then sequentially reacts with metal salt in methanol by a stepwise coordination method to construct homonuclear or heteronuclear bimetallic complex, finally uniformly mixes the complex with carbon black and dicyandiamide, and performs programmed temperature carbonization under inert atmosphere to prepare bimetallic catalyst with atomic level dispersion structure, realizes accurate anchoring and stable loading of bimetallic sites on the carbon carrier, and not only has high activity and stability in electrocatalytic carbon dioxide reduction reaction, but also can efficiently activate peroxymonosulfate for pollutant degradation.

The application relates to the field of semiconductors, and particularly relates to a quasi-solid-phase-based fuel cell platinum-based catalyst and a preparation method thereof. A preparation method of a quasi-solid-phase-based fuel cell platinum-based catalyst comprises the following steps: mixing an organic synthetic ligand, a catalyst carrier and a platinum-based organic ligand in a low-boiling-point organic solvent; removing the low-boiling-point organic solvent to obtain a pre-annealed precursor; and high-temperature annealing the pre-annealed precursor under an argon gas atmosphere or an argon-hydrogen gas atmosphere at 230-290 DEG C for 1-2 hours to obtain the quasi-solid-phase-based fuel cell platinum-based catalyst. The quasi-solid-phase method can prevent the agglomeration of nanoparticles under high-temperature conditions, realize accurate micro-control of the size of platinum-based nanoparticles, and the synthesized platinum-based nanoparticle material has small particle size, good performance and high stability.