Dearsenification catalyst and preparation method thereof

The invention relates to a dearsenification catalyst and a preparation method thereof. Copper oxide and nickel oxide are loaded by an impregnation method, and then are further treated to form an oxidesolid solution of copper and nickel. According to the dearsenification agent obtained after dipping-air atmosphere roasting-reducing atmosphere roasting-oxidation/helium atmosphere roasting, a metalsolid solution of CuNiO2 is formed and is uniformly dispersed on the inner surface of a molecular sieve, especially the inner surface of a macroporous Y-type molecular sieve, so that excellent dearsenification capacity is obtained. The formation of the solid solution metal oxide can give full play to the ability of complexing metal elements with arsenic elements, and the dearsenification capacityis improved by 30% compared with that of an impregnated CuONiO dearsenification agent. 本公开涉及一种脱砷催化剂及其制备方法，通过浸渍法负载氧化铜和氧化镍后，对其进一步处理，以形成铜和镍的氧化物固溶体。通过浸渍-空气气氛焙烧-还原气氛焙烧-氧化/氦气气氛焙烧后的脱砷剂，由于形成了CuNiO的金属固溶体，均匀的分散在分子筛尤其是大孔Y型分子筛内表面，从而获得了优良的脱