CUPROUS OXIDE POWDER AND METHOD FOR PRODUCING SAME

摘要

There are provided a cuprous oxide powder having a smaller particle diameter than that of conventional cuprous oxide powders, and a method for producing the cuprous oxide powder by a chemical reducing process. In a method for producing a cuprous oxide powder by adding a reducing agent, such as a reducing sugar, to a solution containing copper hydroxide, which is formed by adding one of an alkali solution and a copper ion containing solution to the other thereof, to deposit cuprous oxide particles by reduction, 0.00001 to 0.04 moles (10 to 40000 ppm) of ferrous ions with respect to the amount of copper ions in the copper ion containing solution are added to the copper ion containing solution before forming copper hydroxide, to produce a cuprous oxide powder which has a mean primary particle diameter of not greater than 0.5 micrometers when it is measured by a scanning electron microscope (SEM), the cuprous oxide powder having a 50% particle diameter (D50 diameter) of not greater than 0.8 micrometers when it is calculated by a laser diffraction type particle size distribution measurement, the cuprous oxide powder containing 0.30 ppm or more of iron.

主权项

1. A method for producing a cuprous oxide powder, the method comprising the steps of:
adding ferrous ions to a copper ion containing solution; adding one of an alkali solution and the copper ion containing solution, to which the ferrous ions are added, to the other thereof to form copper hydroxide; and adding a reducing agent to the solution, in which copper hydroxide is formed, to deposit cuprous oxide particles by reduction.