Nickel-based catalyst, preparation method thereof and application of nickel-based catalyst in selective hydrogenation of propyne and propadiene in propylene

• Main Author: WU QUANGUI
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention provides a nickel-based catalyst, a preparation method thereof and application of the nickel-based catalyst in selective hydrogenation of propyne and propadiene in propylene. The preparation method comprises the following steps: mixing high-purity pseudo-boehmite, an alcohol solvent, an organic vanadium precursor and polyethylene glycol, drying, and roasting at the temperature not exceeding 250 DEG C to obtain vanadium-containing pseudo-boehmite; mixing the vanadium-containing pseudo-boehmite powder with a solution containing molybdenum salt, manganese salt and chromium salt, and drying to obtain vanadium-molybdenum-manganese-chromium modified pseudo-boehmite; and mixing the vanadium-molybdenum-manganese-chromium modified pseudo-boehmite with a solution containing nickel salt and potassium salt, drying, rapidly heating and roasting, and cooling to obtain the nickel-based catalyst. The preparation method of the nickel-based catalyst is simple and suitable for large-scale industrial production, an