BIMETALLIC CATALYST FOR HIGH NITRATE NITROGEN REDUCTION AND SELECTIVITY AND MANUFACTURING METHODS THEREOF

摘要

In a method of manufacturing a bimetallic catalyst for reductively decomposing nitrate nitrogen, a powder including a trivalent iron oxide, a powder including a trivalent iron oxyhydroxide powder or a combination thereof is mixed in an aqueous solution. A copper precursor and a palladium precursor are mixed in the aqueous solution to form a precursor mixture. The precursor mixture is dried. The dried precursor mixture is fired at a temperature from about 300° C. to about 450° C. to form a fired product. The fired product is reduced by a reducing agent. A hydrochloric acid solution is mixed in the aqueous solution, or mixed with the copper precursor or the palladium precursor.

主权项

1. A method of manufacturing a bimetallic catalyst for reductively decomposing nitrate nitrogen, comprising:
(a) mixing a powder including a trivalent iron oxide, a powder including a trivalent iron oxyhydroxide powder or a combination thereof in an aqueous solution; (b) mixing a copper precursor and a palladium precursor in the aqueous solution to form a precursor mixture; (c) drying the precursor mixture; (d) firing the dried precursor mixture at a temperature from about 300° C. to about 450° C. to form a fired product; and (e) reducing the fired product by a reducing agent, wherein a hydrochloric acid solution is mixed in the aqueous solution in the step (a), or a hydrochloric acid solution is mixed with the copper precursor or the palladium precursor in the step (b).