Technological parameters of the ammonolysis of waste 1,2-dichloropropane.

Marcin Bartkowiak, Grzegorz Lewandowski, Eugeniusz Milchert

Index: J. Hazard. Mater. 106(2-3) , 107-14, (2004)

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Abstract

The ammonolysis of waste 1,2-dichloropropane (DCP) using liquid ammonia has been investigated. The influence of temperature, molar ratio of NH3/1,2-dichloropropane and reaction time was examined. The highest yield of the synthesis was achieved at a temperature of 140 degrees C, for the reaction time of 3 h and the molar ratio of NH3/1,2-dichloropropane as 20:1. Under these conditions the degree of 1,2-dichloropropane conversion amounted to 97.1 mol% and the selectivity of transformation to 1,2-diaminopropane (DAP) in relation to consumed 1,2-dichloropropane was 25.3 mol%, whereas in relation to consumed ammonia 17.9 mol%. The remaining 1,2-dichloropropane reacts to form polypropyleneamines.Copyright 2003 Elsevier B.V.