| 摘要 |
Catalysts, for olefin oligomerization, whose active material has the empirical formula I APO4.[P2O5.(H2O)n]a . (XY)b I where A is boron, antimony, bismuth, aluminum and/or 3 equivalents of titanium, X is NH4(+) and/or an alkali metal cation and/or one equivalent of an alkaline earth metal cation, Y is one equivalent of an anion, a is 0.02-0.2, b is 0-0.05 and n is 1-3, and a process for the preparation of these catalysts. |
