A Framework And A Methodology For Data Quality Assessment And Monitoring

A method for producing triethylenediamines and piperazines, which comprises contacting an amine compound having a group of the formula (1):wherein each of R1 to R4 which are independent of one another, is a hydrogen atom or a C1-3 alkyl group which may have a substituent, with a catalyst consisting of a crystalline aluminosilicate calcinated at a temperature of from 500 to 950° C. and then contacted with an inorganic acid, and having a molar ratio of silica to alumina of at least 12.