| 摘要 |
PURPOSE:To fabricate through a simple process a composition which can remove compounds with constantly stable performance and which has power to clean air by adding an oxy-polybasic acid together with water to metals while specifying the amount of the group in a mole ratio against the metals, and causing the acid and the metals to react with each other until the PH of this solution reaches 5.0 to 7.5, and then adding an alkali solution thereto so as to adjust the PH to 6.0 to 14, and using a metal carrier for carrying a composition obtained. CONSTITUTION:One or two kinds of metals selected from among Fe, Mn, Al, Zn, Cr and Cu are made to react with an oxy-polybasic acid in a mole ratio of 1:0.5 to 1 in the presence of water so as to form a reaction solution of the metals and the oxy-polybasic acid of 7.5>PH>5.0. Next, an alkali is added to the reaction solution to fabricate a solution of an air-cleaning composition which is adjusted to 14>PH>6.0. A general alkali such as Ca(OH)2, NaOH, Mg(OH)2 and KOH is used as the above alkali and added directly or as solution to the colloidal reaction solution. The amount of the alkali added is 0.2 to 2% by weight of the metals. The solution of the air- cleaning composition is carried by a carrier which is a molding or sintered body of powder of one or two kinds of metals selected from among Fe, Mn, Al, Zn, Cr, and Cu, to form an air-cleaning material. |
