| abstract |
A process for the preparation of triethylenediamine (TEDA) by reaction of ethylenediamine (EDA) in the presence of a zeolite catalyst, wherein n the zeolite catalyst comprises one or more metals M in oxidation states II, III or IV as oxides, and n for M=Al, has an SiO 2 /M 2 O 3 molar ratio of greater than 1400:1, n for M=metal in oxidation state II or M=two or more metals in oxidation state II, has an SiO 2 /MO molar ratio of greater than 100:1, n for M=metal in oxidation state III or M=two or more metals in oxidation state III, has an SiO 2 /M 2 O 3 molar ratio of greater than 100:1 and n for M=metal in oxidation state IV or M=two or more metals in oxidation state IV, has an SiO 2 /MO 2 molar ratio of greater than 10:1, n and the reaction temperature is from 250 to 500° C. |