Helium gas separator material and method for producing the same
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United States of America Patent
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Nov 8, 2016
Grant Date -
Jun 4, 2015
app pub date -
Jun 27, 2013
filing date -
Jul 3, 2012
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Abstract
The helium gas separator material includes a base portion and a gas separation portion joined to the base portion. The base portion is composed of a porous α-alumina material which has communication holes with an average diameter of 50 nm to 1,000 nm; the gas separation portion has a porous γ-alumina portion containing a Ni element and a silica membrane portion which is disposed on the inner wall of the communication holes in the porous portion; and the average diameter of pores surrounded and formed by the silica membrane portion is 0.27 nm to 0.60 nm.
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