To suppress the combustion reaction of ethylene without incurring activity deterioration by making a Cu-Al-Cl coprecipitation catalyst carry at least, one kind of metallic element of a rare earth metal.
A Cu-Al-Cl coprecipitation catalyst is made to carry at least, one kind of metallic element of a rare earth metal. The method for carrying the rare earth metal is to impregnate the Cu-Al-Cl coprecipitation catalyst after baking with an aqueous solution of rare earth metallic salt so that the content of the rare earth metal is 0.1-15 wt.% and bake the catalyst after drying. In addition, for the metallic element for impregnation, especially nitrate or chloride is preferred among the metallic salts which are generally used. This catalyst for oxychlorination contains 3-20 wt.% of metallic copper, 3-15 wt.% of Cl and alumina or a water-containing alumina as another principal component for the total weight of the catalyst. The rare earth metals are lanthanum, cerium, praseodymium, neodymium, samarium and dysprosium, and the carried amount of the rare earth metal is to be 0.1-15 wt.% for the total weight of the catalyst.
| WO/2023/151157 | CHEMICAL INTERMEDIATE AND PREPARATION METHOD |
| JPH0912483 | PRODUCTION OF ETHYLENE |
HONDA TADATOSHI
TAKASU ISAO
| JP38008691A | ||||
| JPS6377359A | 1988-04-07 |