Method for producing metal-supported zeolite for alcoholic beverages, metal-supported zeolite for alcoholic beverages, and method for producing alcoholic beverages

A method for producing a metal-supported zeolite with silver ion supported as a metal ingredient, comprising:

• performing a first ion-exchange treatment comprising processing a zeolite carrying a metal ion with an ammonium ion-containing aqueous solution to thereby exchange the metal ion in the zeolite for an ammonium ion, the zeolite comprising a Y-type zeolite in an amount of 80% by mass or more based on the total mass of the metal-supported zeolite, and
• performing a second ion-exchange treatment comprising processing the ammonium ion-exchanged zeolite obtained in the first ion-exchange treatment with an aqueous silver nitrate solution, wherein said aqueous silver nitrate solution comprises silver in a concentration ranging from 5% by mass to 15% by mass, to thereby exchange the ammonium ion therein with a silver ion
• wherein the metal-supported zeolite has a silver use ratio of 85% or more, the silver use ratio determined according to the following expression:
• silver use ratio (%)−[silver supported amount in terms of an oxide thereof in zeolite/charged amount in terms of an oxide thereof (theoretical value)]×100;
• and
• wherein the metal-supported zeolite in ultraviolet-visible absorption spectroscopy is in a measurement range of 800 to 200 nm according to a diffuse reflection method of the metal-supported zeolite, the height of the absorption peak UV1 observed between 250 and 270 nm and the height of the absorption peak UV2 observed between 210 nm±10 nm satisfy (UV1/UV2)≤0.2.