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Mechanism of 2,4-dinitrotoluene hydrogenation over Pd/C

โœ Scribed by G. Neri; M.G. Musolino; C. Milone; A.M. Visco; A. Di Mario

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
618 KB
Volume
95
Category
Article
ISSN
1381-1169

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โœฆ Synopsis

Hydrogenation of 2,4_dinitrotoluene (DNT) to 2,4-diaminotoluene (DAT) has been carried out over a 5% Pd/C catalyst.

Gas chromatography and liquid chromatography have been used to detect the reaction intermediates. CHydroxylamine,2nitrotoluene (4HA2NT) is the main reaction intermediate. The two amino-nitro compounds 4-amino,2-nitrotoluene (4A2NT) and 2-amino,4-nitrotoluene (2A4NT) are the other relevant intermediates found. 4HA2NT decomposes by exposure to air and in the GC injector thus complicating the analysis of the reaction mixture. A simple procedure has been developed to perform the GC analysis without interference of the hydroxylamine. A kinetic study has been also carried out and a reaction pathway has been proposed. Intermediates are formed from DNT through three parallel reactions. They are then hydrogenated to the final product DAT by a series of consecutive reactions.

๐Ÿ“œ SIMILAR VOLUMES

Catalytic hydrogenation of 2,4-dinitroto
Catalytic hydrogenation of 2,4-dinitrotoluene over a Pd/C catalyst: identification of 2-(hydroxyamino)-4-nitrotoluene (2HA4NT) as reaction intermediate
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The catalytic hydrogenation of 2,4-DNT over palladium supported on carbon catalysts is reported. The 2-(hydroxyamino)-4-nitrotoluene (2HA4NT) was identified as a reaction intermediate. The characterization of this compound and the reasons for its formation are discussed.

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