Catalyst and preparation method thereof

The invention discloses a catalyst and a preparation method, relates to the technical field of catalyst synthesis, and aims to solve the problem that the existing catalyst is easy to inactivate under low-temperature, high-temperature and high-humidity conditions. The catalyst is a zeolite molecular sieve catalyst with an AEI configuration, the zeolite molecular sieve catalyst contains copper ions introduced into the zeolite molecular sieve catalyst in the form of a copper source, and the amount of medium and strong acids in the zeolite molecular sieve catalyst accounts for 50%-70% of the total acid amount. The preparation method is used for preparing the catalyst. The catalyst and the preparation method provided by the invention are used for improving the activity and the service life of the catalyst. 本发明公开一种催化剂及制备方法，涉及催化剂合成技术领域，以解决现有的催化剂在低温、高温、高湿条件下容易失活的问题。该催化剂为AEI构型的沸石分子筛催化剂，该沸石分子筛催化剂含有以铜源形式引入沸石分子筛催化剂的铜离子，沸石分子筛催化剂的中强酸量占总酸量的50％-70％。该制备方法用于制备该催化剂。本发明提供的催化剂及制备方法用于提高催化剂的活性和寿命。