Composite catalyst as well as preparation method and application thereof

• Main Authors: GAO AIFANG, ZHAO ZHIRUI, ZHU ZHENYA, SUN JINGJING, WAN JINGMIN, LI AIGUO, FANG XIAOFENG, MIAO ZHIJIA, YUN YUPAN, WEN XUEYOU, LI JING, JIAO ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 29.07.2022
• 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 composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of sewage treatment in environmental engineering. The catalyst is a supported catalyst and is composed of a catalytic active component and a carrier. The catalyst-loaded active component is composed of a main catalyst and a co-catalyst. The carrier is prepared by mixing and processing two materials according to a certain proportion, and the carrier is composed of graphene and modified diatomite which are stable in chemical property, good in adsorption performance and large in specific surface area. According to the active components of the catalyst, the main catalyst is Pd, the cocatalyst is Cu, nitrate radicals in a water body react with reductive iron elementary substance (Fe0) to be converted into N2 under the catalytic action of the catalyst, and therefore the purpose of effective denitrification is achieved. 本发明提供了一种复合催化剂及其制备方法和应用，属于环境工程中污水处理技术领域。该催化剂为负载型催化剂，由催化活性组分和载体构成