Cordierite-based supported ozone catalyst and preparation method and application thereof

• Main Authors: MA RUI, TONG ZHENWEI, ZHONG ZHENCHENG, XIONG RIHUA, CHENG ZIHONG, YU SHUANG'EN
• Format: Patent
• Language: Chinese; English
• Published: 02.01.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a cordierite-based supported ozone catalyst and a preparation method and application thereof, and the prepared supported ozone catalyst can well give consideration to excellent COD removal rate and good mechanical properties when being used for treating organic wastewater, especially high-salt organic wastewater in the field of coal chemical industry. The preparation method comprises the following steps: 1) pretreating porous cordierite in an acid solution, and then cleaning and drying to obtain a carrier; 2) applying a coating liquid on the carrier, and then drying to obtain a precursor; the coating liquid comprises an active component, silica sol and optional starch; the active component comprises MnO2, and also optionally comprises CeO2; preferably, the coating liquid also comprises glass fibers and polyethylene glycol; and 3) roasting the precursor at 100-150 DEG C to obtain the supported ozone catalyst with a coating layer formed on the carrier. 本发明提供一种基于堇青石的负载型臭氧催化剂及其制备方法和应用，所制备的负