| 摘要 |
Amines are prepared by reacting a mixture obtained in the cracking of mineral oil fractions with ammonia or a primary or secondary amine of the general formula I <IMAGE> (I) where R1 and R2 are each hydrogen, C1-C20-alkyl, C2-C20-alkenyl, C2-C20-alkynyl, C3-C20-cycloalkyl, C4-C20-alkylcycloalkyl, C4-C20-cycloalkylalkyl, aryl, C7-C20-alkylaryl or C7-C20-aralkyl or together are a saturated or unsaturated C2-C12-alkylene ene chain, at from 200 DEG to 350 DEG C. and from 100 to 300 bar in the presence of a heterogeneous catalyst, by a process which comprises using one or more members of the following classes as the heterogeneous catalyst: a) zeolites b) aluminosilicates c) hydrothermally prepared phosphates d) mesoporous oxides having a large surface area e) pillared interlayered clays (PILCs) f) amorphous oxides which are prepared by the sol-gel process g) acid-treated sheet silicates
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