PROBLEM TO BE SOLVED: To provide a manufacturing method of a nitrogen gas adsorbent, which does not require a step of reducing copper ion by heating under reduced pressure and to provide a nitrogen gas adsorbent manufactured by the manufacturing method.SOLUTION: A method for manufacturing a nitrogen gas adsorbent comprises: a step of immersing a high-silica zeolite into a monovalent copper ion solution to hold a monovalent copper ion in the high-silica zeolite and a step of drying the high-silica zeolite holding the monovalent copper ion. The high-silica zeolite is a synthetic zeolite from which Al is subject to dealuminization in a crystal skeleton to increase Si/Al (silica-alumina ratio). The nitrogen adsorbent uses the high-silica zeolite having a silica-alumina ratio of 5 or more, preferably 10 or more. In the method for manufacturing a nitrogen gas adsorbent, the monovalent copper ion solution is a solution comprising a salt composed of the monovalent copper ion such as copper(I) chloride, copper(I) nitrate, copper(I) sulfate, copper(I) acetate. The method uses the nitrogen adsorbent as a vacuum heat insulating material, an adsorbent for PSA, an oxygen enriching material and the like.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】減圧下で加熱による銅イオンの還元工程を要しない窒素ガス吸着材の製造方法、及び該製造方法により製造した窒素ガス吸着材の提供。【解決手段】ハイシリカゼオライトを1価の銅イオン溶液に浸漬してハイシリカゼオライトに1価の銅イオンを担持する工程、1価の銅イオンを担持したハイシリカゼオライトを乾燥する工程、を含む窒素ガス吸着材の製造方法。ハイシリカゼオライトは合成ゼオライトから結晶骨格内のAlを脱Al処理して、Si/Al(ケイバン比)を高めた合成ゼオライトであり、ケイバン比が5以上、好ましくは10以上のハイシリカゼオライトを用いた窒素吸着材。1価の銅イオン溶液とは例えば塩化第一銅、硝酸第一銅、硫酸第一銅、酢酸第一銅等の一価の銅イオンからなる塩の溶液である窒素吸着剤の製造方法。前記窒素吸着剤を真空断熱材、PSAの吸着材、酸素濃縮材等に用いる方法。【選択図】図1
