2results about How to "Restore catalytic activity" patented technology

This invention discloses a floating catalyst and its application in the synthesis of p-hydroxyphenylhydantoin. Copper and manganese co-doped nano-TiO2 hydrosol is loaded onto fly ash cenospheres to form a gel. The dried gel is sintered at 600-700℃ to obtain a floating catalyst with fly ash cenospheres as the support. Its chemical composition is: SO42- 2‑ / TiO2-CuO-Mn2O3 / fly ash cenospheres; its mass composition is: TiO2-CuO-Mn2O3 / 2 25%‑30%, CuO3%‑10%, Mn2O 3 6%–20%, S 0.02%–0.1%, fly ash cenospheres 50%–60%; its specific gravity is 0.6–0.90 g / cm³. 3 Specific surface area is 10-50 m² 2 / g; possesses solid superacid properties with an acid strength H0 ≤ -14.5; dissolves in acidic solvents to generate trace amounts of copper and manganese ions. The catalyst of this invention can float on the surface of aqueous solutions, solving the problem of separating solid catalysts from insoluble p-hydroxybenzylhydantoin products; it catalyzes the synthesis of p-hydroxybenzylhydantoin via two pathways, achieving a product molar yield of 68%-72%; it possesses photocatalytic functionality, allowing for the regeneration of catalysts that have lost surface catalytic activity; and it reduces the generation of organic pollutants at the source.

This invention discloses a combined heat and power (CHP) system for building hydrogen production from alcohols based on microwave-induced oxidation, comprising a raw material supply mechanism, a mixing tank, a reforming reaction mechanism, and a product purification mechanism. The raw material supply mechanism includes an alcohol storage tank and a deionized water storage tank. A mixing component is installed on the mixing tank. The reforming reaction mechanism includes a microwave generator and a catalytic component installed inside. The mixing tank is connected to the microwave generator via a second connecting component. The product purification mechanism includes an adsorption device for purifying hydrogen. The microwave generator is connected to the adsorption device via a first connecting pipe, and the adsorption device is connected to a hydrogen buffer tank via a second connecting pipe. The reforming reaction mechanism also includes a catalyst regeneration component for catalyst regeneration. This invention effectively overcomes the technical bottleneck of easy catalyst deactivation and frequent replacement required in existing alcohol hydrogen production equipment by adding a catalyst regeneration component to the reforming reaction mechanism.