3results about How to "Increased hydrogenation conversion" patented technology

The invention provides a hydrogenation catalyst of a dibenzo 18-crown-6 ether compound as well as a preparation method and application thereof, and the preparation method of the hydrogenation catalyst of the dibenzo 18-crown-6 ether compound comprises the following steps: dispersing strontium salt, ruthenium salt and a carrier in a solvent to obtain a dispersion liquid; the dispersion liquid is dried and sintered, and a sintered product is obtained; and reducing the sintered product in a reducing atmosphere to obtain the hydrogenation catalyst. According to the preparation method of the hydrogenation catalyst of the dibenzo 18-crown-6 ether compound, ruthenium is stabilized by adopting alkaline earth metal strontium, excessive reduction and aggregation can be prevented, efficient catalytic hydrogenation of ruthenium is achieved, meanwhile, strontium and crown ether molecules have coordination-riveting interaction, hydrogenation of benzene rings on the same side can be achieved to the maximum extent, and the yield of the hydrogenation catalyst of the dibenzo 18-crown-6 ether compound is increased. The hydrogenation conversion rate and the cis-isomer selectivity in the product are greatly improved, and subsequent purification is not needed.

This invention discloses a working solution for synthesizing hydrogen peroxide via the anthraquinone method, comprising a solvent and a working carrier. The solvent comprises aromatic hydrocarbons, diisobutylmethanol, and terephthalamide derivative A. Terephthalamide derivative A, by volume, has C9~C64... 10 The aromatic hydrocarbon comprises 30-95 parts, preferably 60-80 parts; the diisobutylmethanol comprises 2-20 parts, preferably 5-15 parts; and the terephthalamide derivative A comprises 5-30 parts, preferably 5-15 parts; the aromatic hydrocarbon is generally C9-C6. 10 Aromatic hydrocarbons; the working carrier is one or more of anthraquinone and its derivatives. This working solution exhibits excellent solubility and mass transfer capabilities for hydrogen, anthraquinone, and hydroanthraquinone, with a hydrogenation efficiency exceeding 13 g / L. It has low miscibility with water, good extraction and separation effects, and stable physicochemical properties. It can improve the production efficiency of the anthraquinone process for producing hydrogen peroxide and has promising prospects for industrial application.

This invention relates to the field of solid-state hydrogen storage materials technology, and discloses a rapid production process for magnesium hydride and its preparation. The process includes solid raw materials composed of industrial-grade pure magnesium powder, natural flake graphite, and anhydrous TiCl3. The preparation process involves dispersing the materials in a cryogenic environment, followed by programmed heating to a constant-temperature curing stage, where the anhydrous TiCl3 is reduced in situ by pure magnesium to generate zero-valent nano-Ti catalytic sites and the flux MgCl2, thereby improving hydrogen absorption kinetics. Subsequently, a hydrogen-argon mixture is injected into the reactor to establish a pseudo-fluidized suspension field for the hydrogenation reaction. The physical isolation of the graphite, combined with the heat dissipation from the gas flow, prevents the materials from sintering. Gas-solid cross-flow shearing action strips the product layer from the particle surface, refreshing the reaction interface and improving the internal hydrogenation conversion rate. After the reaction, the material is cooled by cold argon gas and passivated in an oxygen-argon mixture. This invention solves the problems of limited mass and heat transfer and slow kinetics.