| 摘要 |
<p>The invention relates to a method for regenerating a heterogeneous catalyst, which is used with hydrogen, in order to produce compounds containing NH2 groups by hydrogenating compounds that contain at least one unsaturated carb on- nitrogen bond. The inventive method is characterized in that: a) the supply of the compound to be hydrogenated is stopped, and; b) the heterogeneous cataly st or mixtures thereof is/are treated with a compound of formula (I) R1R2N-CO-R 3, whereby R1 represents hydrogen and C1-C4 alkyl, R2 and R3, independent of on e another, represent hydrogen and C1-C4 alkyl or, together, represent a C3-C6 alkylene group, under a pressure ranging from 0.1 to 30 MPa and at a temperature ranging from 100 to 300 ~C. The heterogeneous catalyst is treate d with said compound of formula (I) provided that this compound is liquid duri ng the treatment.</p> |
