| 摘要 |
<p>Preparation of triethylenediamine (I, 1,4-diazabicyclo(2,2,2)octane) by reacting ethylenediamine (II) at 250-500degreesC in presence of a zeolite catalyst (A) containing at least one metal (M) in oxidation states II, III or IV, as the oxide. Preparation of triethylenediamine (I, 1,4-diazabicyclo(2,2,2)octane) by reacting ethylenediamine (II) at 250-500degreesC in presence of a zeolite catalyst (A) containing at least one metal (M) in oxidation states II, III or IV, as the oxide. When M is aluminum, the SiO2:M oxide mole ratio is over 1400:1, when M has an oxidation state II or III the mole ratio is over 100:1, and when M has an oxidation state IV, the mole ratio is over 10:1.</p> |
