| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a Co<SB POS="POST">3</SB>O<SB POS="POST">4</SB>/CeO<SB POS="POST">2</SB>composite catalyst for exhaust gas purification having purification performance of unreacted substances such as CO in exhaust gas at low temperature. <P>SOLUTION: The method for producing the Co<SB POS="POST">3</SB>O<SB POS="POST">4</SB>/CeO<SB POS="POST">2</SB>composite catalyst for purifying CO in exhaust gas includes processes of: preparing a starting material of two types of metal oxide having 70% or more and 100% or less of a mass proportion of Co with respect to a total amount of Co and Ce [Co/(Co+Ce), by %]; applying shearing stress to a mixed solution of the starting material and a neutralizer by ultra stirring to mix the mixed solution and generating a mixture including a precursor of Co<SB POS="POST">3</SB>O<SB POS="POST">4</SB>and a precursor of CeO<SB POS="POST">2</SB>; separating powder from the mixture including the precursors; and drying and burning the obtained powder to generate a mixture of Co<SB POS="POST">3</SB>O<SB POS="POST">4</SB>nano-particles and CeO<SB POS="POST">2</SB>nano-particles. <P>COPYRIGHT: (C)2013,JPO&INPIT |
