OXYGEN ABSORBENT - MITSUBISHI GAS CHEMICAL CO

Title:

OXYGEN ABSORBENT

Document Type and Number:

WIPO Patent Application WO/2014/024911

Kind Code:

A1

Abstract:

[Problem] To provide an oxygen absorbent that is capable of absorbing oxygen in the environment even if the environment contains no or little moisture, and has excellent oxygen absorption performance. [Solution] The oxygen absorbent includes an alloy (Y) obtained by using an aqueous alkali solution to treat an alloy (X) comprising (A) at least one transition metal selected from the group consisting of manganese group elements, iron group elements, platinum group elements and copper group elements, and (B) at least one metal selected from the group consisting of aluminum, zinc, tin, lead, magnesium and silicon, and then removing at least a portion of the component (B) from alloy (X) by means of elution. In the X-ray diffraction profile of the alloy (Y), the diffraction peak area, defined as S1 = W1×I1 and S2 = W2×I2 (therein, W1 is the half-width of the diffraction peak from component (A) and/or a solid solution of components (A) and (B), I1 is the diffraction intensity, W2 is the half-width of the diffraction peak with diffraction angle 2θ of 10-11°, and I2 is the diffraction intensity) fulfills the relationship S2/S1 < 0.3

Inventors:

ISHIHARA EMI (JP)
TANAKA HIROKAZU (JP)
IWAI TATSUO (JP)

Application Number:

PCT/JP2013/071334

Publication Date:

February 13, 2014

Filing Date:

August 07, 2013

Export Citation:

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Assignee:

MITSUBISHI GAS CHEMICAL CO (JP)

International Classes:

B01J20/02; A23L3/3436; B01D53/14; B01J20/28; B22F1/14; B22F1/145

Foreign References:

JP2006263630A	2006-10-05
JPH09253481A	1997-09-30
JPS5499092A	1979-08-04
JP5246384B2	2013-07-24
JP2007185653A	2007-07-26
JP2005104064A	2005-04-21
JPS62277148A	1987-12-02
JPH0523597A	1993-02-02

Other References: