Method of selectively synthesizing triethylenediamine

Details Method of selectively synthesizing triethylenediamine Method of selectively synthesizing triethylenediamine

2005-10-25

2005-10-25

Davis, Brian (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitrogen attached directly or indirectly to the purine ring...

Reexamination Certificate

active

06958397

ABSTRACT:
The present invention describes a process for the preparation of triethylenediamine by reacting piperazine over a zeolite catalyst which, in addition to SiO2, contains an oxide of at least one further divalent, trivalent or tetravalent metal M, wherein the zeolite has a molar Si/M ratio of >100. In particular, a zeolite of the ZSM-5 type is used. The use of the zeolites permits suppression of the undesired formation of the byproduct 2-ethylpiperazine and hence considerable simplification of the working-up, in combination with high piperazine conversions and a small excess of water.

REFERENCES:
patent: 3956329 (1976-05-01), Murakami et al.
patent: 4804758 (1989-02-01), Hoelderich et al.
patent: 5731449 (1998-03-01), Li et al.
patent: 5741906 (1998-04-01), Santiesteban et al.
patent: 6084096 (2000-07-01), Li et al.
patent: 312734 (1989-04-01), None

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