| 摘要 |
PURPOSE:To improve the heat resistance of a catalyst carrier by drying and calcining the gelated matter obtd. by mixing an alumina hydrate soln., rare earth element soln., and compd. soln. of >=1 kinds among alkaline earth elements, group 4 elements, etc. CONSTITUTION:The soln. of the alumina hydrate, the soln. of the alkaline earth element compd., and the soln. of the compd. of at least one kind of the elements selected from the group consisting of the alkaline earth elements, group 4 elements, group 8 elements and chromium and mixed. The heat resistant catalyst carrier compsn. is produced of the compound oxide obtd. by gelating such soln. of the alumina hydrate and calcining the gel after drying. The above-mentioned compound oxide is required to have the compsn. ratio consisting of 60-98wt% as alumina, 1-20wt% rare earth element oxide, and 1-20wt% the oxide of at least one kind selected from the alkaline earth elements, group 4 elements, group 8 elements and chromium. |
