Inorganic adsorbent and process for production thereof
AssigneeHitachi, Ltd.
InventorsFumio Kawamura, Makoto Kikuchi, Kiyomi Funabashi
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Abstract
An inorganic adsorbent comprising a porous titanium metal and titanium oxide sintered and impregnated on the surfaces of micropores of the porous titanium metal can be produced by impregnating the porous titanium metal with a titanium alkoxide solution, followed by hydrolysis and oxidation to give titanium oxide, and can be used for selectively removing transition metal ions in a water coolant of nuclear reactor.
Claims16
An inorganic adsorbent comprising a porous titanium metal and titanium oxide sintered and impregnated on the surfaces of micropores of said porous titanium metal;
- said titanium oxide being obtained from a titanium alkoxide of the formula:
- Ti(OR).sub.4, wherein R is a lower alkyl group.
A process for producing an inorganic adsorbent which comprises
- a step of impregnating a porous titanium metal with a titanium alkoxide solution to attach and hold the titanium alkoxide on micropores of the porous titanium metal,
- a step of hydrolyzing the titanium alkoxide attached and held on the micropores to give hydrous titanium oxide, and
- a step of changing the hydrous titanium oxide to titanium oxide by heating the porous titanium metal holding the hydrous titanium oxide and at the same time sintering and impregnating the resulting titanium oxide on the surfaces of micropores of the porous titanium metal.
A process for producing an inorganic adsorbent which comprises
- a step of subjecting a porous titanium metal to vacuum extraction,
- a step of impregnating the porous titanium metal with a titanium alkoxide solution to attach and hold the titanium alkoxide on micropores of the porous titanium metal,
- a step of hydrolyzing the titanium alkoxide attached and held on the micropores to give hydrous titanium oxide, and
- a step of changing the hydrous titanium oxide to titanium oxide by heating the porous titanium metal holding the hydrous titanium oxide and at the same time sintering and impregnating the resulting titanium oxide on the surfaces of micropores of porous titanium metal.
Dependencies are inferred from the claim text.