| 摘要 |
PURPOSE:To industrially advantageously produce manganese dioxide having a large surface area, stable catalytic performance and high reliability with a small amt. of a mineral acid in a manner which is also advantageous to cost and is so clean as to suppress the production of ammonium sulfate, etc., as a by-product by neutralization. CONSTITUTION:One of a permanganate and a divalent manganese compd. is added as a solid state to an aq. soln. of the other and they are subjected to oxidation and curing to produce the objective manganese dioxide having a large specific surface area. |
