Cu-SAPO-34 CATALYST AND PREPARATION METHOD AND USE THEREOF

Abstract

The present disclosure belongs to the technical field of denitration catalysts, and provides a Cu-SAPO-34 catalyst and a preparation method and use thereof. In the preparation method provided by the present disclosure, during crystallization growth, an aluminum precursor, a phosphorus precursor, a silicon precursor, and a copper complex form a Cu-SAPO-34 molecular sieve catalyst under the guiding action of a template morpholine, and the template in the Cu-SAPO-34 molecular sieve catalyst is removed by roasting to obtain the Cu-SAPO-34 catalyst. In the preparation method, a molar ratio of phosphorus and aluminum in the Cu-SAPO-34 catalyst is controlled at (0.1-5):1, thereby increasing a particle size and a specific surface area of the Cu-SAPO-34 catalyst, which is conducive to adsorption of a reaction gas to improve a denitration efficiency. Meanwhile, aggregation of Cu2+ after hydrothermal aging of the Cu-SAPO-34 catalyst is suppressed, thereby improving a hydrothermal stability of the Cu-SAPO-34 catalyst.

Dependencies are inferred from the claim text.