Cobalt-based oxide catalyst and preparation method and application thereof

• Main Authors: WANG PING, LI GUANGYAO, CHEN MUHUA
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2023
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a cobalt-based oxide catalyst and a preparation method and application thereof. The preparation method comprises the following steps: dispersing cobalt acetate in a high-boiling-point organic solvent, heating, adding a carbonate aqueous solution, stirring for reaction to obtain a precipitate, cleaning, drying, and calcining in an air atmosphere to obtain the cobalt-based oxide catalyst. Furthermore, at least one of manganese acetate, cerium acetate and copper acetate is added into the high-boiling-point organic solvent. The cobalt-based oxide catalyst disclosed by the invention is applied to a formaldehyde catalytic oxidation system and has high intrinsic performance and rich active sites, the manganese-doped cobalt-based oxide catalyst can efficiently and stably realize complete catalytic decomposition of formaldehyde at 80 DEG C, and the catalytic activity of the manganese-doped cobalt-based oxide catalyst is at the advanced level of a currently reported cobalt-based non-noble metal