3 results about "Co loading" patented technology

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.