Oxygen absorbing agent and method for storing the same
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsEmi Ishihara, Tomoharu Himeshima, Tatsuo Iwai
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Abstract
There is provided an oxygen absorbing agent that can have a capability of absorbing oxygen in an atmosphere even when the atmosphere is free or substantially free from moisture. The oxygen absorbing agent comprises a metal, the metal having been obtained by subjecting an alloy comprising (A) at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon to treatment with an acidic or alkaline aqueous solution to elute and remove at least a part of the component (B).
Claims18
An oxygen absorbing agent comprising a metal powder, the metal powder having been obtained by subjecting an alloy powder comprising a component (A) and a component (B), a particle diameter of the alloy powder being in a range of 5 to 200 μm;
- component (A) comprising at least one transition metal selected from the group consisting of manganese, iron, platinum, and copper group metals, and
- component (B) comprising at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium, and silicon
- to treatment with an acidic or alkaline aqueous solution to elute and remove at least a part of the component (B) from the alloy powder, wherein the specific surface area, as measured by a BET method, of the metal powder obtained by eluting and removing at least a part of the component (B) is at least 20 m2/g.
Dependencies are inferred from the claim text.