Hydrodenitrogenation of Simple Aromatic Amines on Molybdena Catalysts |
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| Affiliation: | 1. Department of Physical Sciences, Landmark University, Omu-Aran, Nigeria;2. Department of Chemistry, University of Ilorin, P.M.B.1515, Ilorin, Kwara, Nigeria;3. Department of Chemistry, University of South Africa, Pretoria, South Africa;4. Department of Chemistry, College of Pure and Applied Sciences, Kwara State University, P.M. B 1530, Malete, Nigeria;5. Department of Biological Sciences, Afe Babalola University, PMB 5454, Ado-Ekiti, Nigeria;6. Department of Chemistry, Nelson Mandela University, P.O. Box 77000, Port Elizabeth 6031, South Africa;7. Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK |
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| Abstract: | The hydrotreatment of some aromatic amines was studied at temperatures ranging from 400 to 450°C and PH2=1 atm under flow conditions. Hydrogenolysis of aromatic amines involves direct cleavage of the C(sp2) N bond without saturation of the aromatic ring. The presence of hydrogen sulphide in the reaction stream has a promotional effect on the hydrogenolysis of C(sp3)N bond and an inhibitive effect on the hydrogenolysis of C(sp2)N bond. The use of a saturated hydrocarbon as diluent facilitates CN bond hydrogenolysis in the presence of hydrogen, irrespective of the carbon being sp2 or sp3 hybridized. |
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