| 摘要 |
A process for the manufacture of cumene by hydrogenating alpha-methylstyrene with hydrogen in the presence of an alkalinated nickel aluminum oxide carrier catalyst, the improvement comprising, carrying out the hydrogenation at temperatures of about 60 DEG - 160 DEG C in the presence of a catalyst where the carrier material contains kappa and/or delta aluminum oxide having an alkali content of 0.1 - 5 percent by wweight of alkali oxide, wherein (if appropriate) molded aluminum hydroxide containing alkali is dried in a known manner, then it is heated in an air stream at about 400 DEG - 500 DEG C and thereafter steam treated at about 700 DEG - 800 DEG C. The calcined catalyst is then impregnated with a nickel salt in a conventional manner, the salt subsequently being completely decomposed into nickel oxide and volatile components, the nickel content of the catalyst (computed as nickel metal) being about 5 - 12 percent by weight referred to the calcined catalyst. The impregnated catalyst is thereupon reduced in a conventional manner. |
