| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a niobium compound exhibiting excellent water solubility (greater than 30 g Nb/l), which yields niobium pentoxide with a purity of at least 99%, consequently comprising up to 1% impurities from completing agents or counterions when calcined under appropriate conditions, and has a high content of niobium (greater than 22 mass%) in mass%. <P>SOLUTION: A formulation contains ammonium(bisaquo oxobisoxalato)niobate(NH<SB POS="POST">4</SB>)[Nb(O)(C<SB POS="POST">2</SB>O<SB POS="POST">4</SB>)<SB POS="POST">2</SB>(H<SB POS="POST">2</SB>O)<SB POS="POST">2</SB>] and a hydrate thereof, together with at least one ingredient selected from the group consisting of water, an auxiliary agent, an emulsifier, an antimicrobial agent, a water-soluble bag, a water-soluble polymer, polyvinyl alcohol, an oxalic acid, and ammonium oxalate. <P>COPYRIGHT: (C)2013,JPO&INPIT |
