Process for producing denitrating catalysts
AssigneeHitachi Shipbuilding & Engineering Co., Ltd.
InventorsHideya Inaba, Masayoshi Ichiki, Yoshinori Wakiyama
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Abstract
A denitrating catalyst is produced by plating the surface of unactivated metal with aluminum and immersing the resulting layered product in an aqueous aluminum-dissolving solution to dissolve out the aluminum into the aqueous solution and to thereby activate the surface of the metal.
Claims11
A process for producing a denitrating catalyst comprising the steps of plating the surface of unactivated metal with aluminum to form a first layer containing the metal diffused in the aluminum and a second layer containing the aluminum diffused in the metal, immersing the resulting layered product in an aqueous aluminum-dissolving solution to dissolve out the aluminum into the aqueous solution, and contacting the metal from which all or part of the aluminum is dissolved out with a gas containing sulfurous acid gas to thereby activate the surface of the unactivated metal.
Dependencies are inferred from the claim text.