caa a22 4500 475843282 CHVBK 20180406123906.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1023/A:1027208200169 doi (NATIONALLICENCE)springer-10.1023/A:1027208200169 Mechanism of the hydrodenitrogenation of o -toluidine and methylcyclohexylamine over NiMo/γ-Al2O3 [Elektronische Daten] [F. Rota, R. Prins] The hydrodenitrogenation (HDN) of o-toluidine and its reaction intermediates was studied over a NiMo/γ-Al2O3 catalyst. The kinetics of the HDN of methylcyclohexylamine and of the hydrogenation of cyclohexene were also studied. Hydrogenation of o-toluidine alone produces methylcyclohexene and methylcyclohexane. When a sufficient quantity of cyclohexene is added during the HDN of toluidine, methylcyclohexylamine, the first intermediate in the hydrogenation of toluidine, becomes detectable. Because of its strong adsorption constant and high rate constant for reacting further to methylcyclohexene and methylcyclohexane, methylcyclohexylamine is not observed in the HDN of toluidine. Adding cyclohexene decreases the adsorption of methylcyclohexylamine, thus enabling its detection. The rate and adsorption constants of methylcyclohexylamine and cyclohexene in the HDN of methylcyclohexylamine were calculated by fitting the kinetic data to a Langmuir-Hinshelwood equation. A two-site model was used to describe the surface reactions, with one site for the methylcyclohexylamine reactions and the other for the cyclohexene reaction. Kluwer Academic Publishers, 2000 hydrodenitrogenation nationallicence toluidine nationallicence methylcyclohexylamine nationallicence kinetics nationallicence nickel-promoted molybdenum sulphide nationallicence Rota F. Laboratory for Technical Chemistry, Federal Institute of Technology (ETH), 8092, Zurich, Switzerland aut Prins R. Laboratory for Technical Chemistry, Federal Institute of Technology (ETH), 8092, Zurich, Switzerland aut Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 11-12/1-4(2000-04-01), 327-333 1022-5528 11-12:1-4<327 2000 11-12 11244 https://doi.org/10.1023/A:1027208200169 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1027208200169 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rota F. Laboratory for Technical Chemistry, Federal Institute of Technology (ETH), 8092, Zurich, Switzerland aut NATIONALLICENCE 700 1- Prins R. Laboratory for Technical Chemistry, Federal Institute of Technology (ETH), 8092, Zurich, Switzerland aut NATIONALLICENCE 773 0- Topics in Catalysis Kluwer Academic Publishers-Plenum Publishers 11-12/1-4(2000-04-01), 327-333 1022-5528 11-12:1-4<327 2000 11-12 11244 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer