| 摘要 |
<p>N-(2-Hydroxyethyl)piperazine of the formula I <IMAGE> is prepared by reaction of triethanolamine of the formula II <IMAGE> with ammonia in the presence of hydrogen at temperatures from 100 to 500 DEG C and pressures from 10 to 500 bar on heterogeneous catalysts, employing heterogeneous catalysts having an active mass containing 20 to 85% by weight of ZrO2 and/or Al2O3, 1 to 30% by weight of oxygen-containing compounds of copper, calculated as CuO, 1 to 60% by weight of oxygen-containing compounds of cobalt calculated as CoO and/or oxygen-containing compounds of nickel, calculated as NiO and/or oxygen-containing compounds of molybdenum, calculated as MoO3.</p> |
