5 results about "Co loading" patented technology

The invention discloses a residual oil derived carbon supported Pt-Co-Au intermetallic compound as well as a preparation method and application thereof. According to the preparation method, residual oil is used as a carbon source, nitrogen-doped petroleum vacuum residual oil porous carbon is synthesized through a template method and nitrogen doping modification, and the high-dispersion intermetallic compound composite material Pt-Co-Au / NPPC is prepared with the porous carbon material as a carrier through an impregnation reduction method. In the catalyst, the total metal loading capacity is 30 to 50 percent by weight, the Pt loading capacity is 26 to 41 percent by weight, the Co loading capacity is 3.8 to 7 percent by weight, and the Au loading capacity is 0.2 to 2 percent by weight. The residual oil derived carbon supported Pt-Co-Au composite material nano catalyst prepared by the invention has efficient oxygen reduction (ORR) catalytic activity, and the synthesized catalyst has the characteristic of small size. The small size can effectively improve the utilization rate of Pt atoms, and the doping of Au can optimize the electronic structure of surface Pt, so that the ORR activity is improved. The fuel cell membrane electrode test peak power density of the prepared catalyst under the hydrogen-air condition reaches 1.12 W / cm < 2 >, the synthesis steps are simple, and the catalyst has good application prospects.

A CuCo catalyst, a preparation method and a use for preparing lower alcohols from syngas. The CuCo catalyst uses zinc-aluminum composite oxide Zn(Al)O as a carrier, and bimetallic nanoparticles of Cu and Co are loaded on the surface of the carrier. The Co loading of the CuCo catalyst is 0.5 wt% - 22 wt%, and the Cu loading is 0.5 wt% - 22 wt%. By regulating the synthesis method of the hydrotalcite precursor and controlling the process conditions during the preparation, a CuCo bimetallic catalyst with controllable structure is obtained. Due to the characteristic of uniform distribution of dual active sites, the catalyst can achieve high selectivity, activity and stability when used for preparing C 2+ OH from syngas and has good application prospects.

A hydrogen storage material additive, a composite hydrogen storage material, and a preparation method thereof, relate to the technical field of hydrogen storage materials and solve the problem of slow low-temperature hydrogen release kinetics in existing hydrogen storage systems. The additive is a CeO2@TiO2 nanorod core-shell heterostructure with Co metal loaded on the surface, with a Co loading of 2 wt.%. CeCl3·7H2O and NaOH solution are used as raw materials for hydrothermal reaction, centrifuged, washed, and dried to obtain CeO2 powder, which is added to anhydrous ethanol, stirred, and then C 16 H 36 O4Ti and deionized water are reacted in an oil bath, centrifuged, washed, and dried to obtain a precursor. This precursor is then calcined to obtain CeO2@TiO2 powder, which is then added to deionized water and stirred. Co(NO3)2·3H2O is then added, stirred for reaction, filtered, dried, and then calcined in reducing gas to obtain the additive. This additive can be used in LiAlH4-AlH3 composite hydrogen storage systems and has broad application prospects.

The application discloses a method for preparing cinnamyl alcohol by hydrogenating cinnamyl aldehyde. The method comprises the following steps: in a reactor, under a non-active gas atmosphere, mixing isopropanol with cinnamyl aldehyde, and contacting the mixture with a catalyst to obtain cinnamyl alcohol by reaction; the catalyst is composed of a carrier and cobalt particles loaded on the surface of the carrier; the size of the cobalt particles is 2-30 nm, and the cobalt particles are highly dispersed; and the loading amount of the cobalt particles in the catalyst is 30-70 wt%. The biomass alginate with low price is used as a carbon source, and the preparation method is simple and easy to implement. The catalyst has the advantages of high Co loading amount, small Co particle size and high dispersion, and exhibits good catalytic activity and cinnamyl alcohol selectivity in the selective hydrogenation reaction of cinnamyl aldehyde.

The invention relates to the technical field of catalysts, in particular to a monomer acid hydrogenation catalyst (Pd-Co bimetallic supported catalyst) as well as a preparation method and application thereof. The catalyst takes activated carbon and a molecular sieve as a composite carrier, and palladium and cobalt bimetals as active components; wherein the loading capacity of Co is 5%-10%, and the loading capacity of Pd is 0.25%-0.5%. Compared with the prior art, the bimetallic catalyst has the advantages that the catalytic activity can be remarkably improved, the iodine value of a monomer acid hydrogenation product is reduced, and meanwhile, the molecular sieve carrier structure of the bimetallic catalyst can convert and remove stearic acid lactone which is difficult to remove in the monomer acid in the hydrogenation reaction process.