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Optimization of Process Variables in the Hydrogenation of p-Toluidine on Ru/C Catalyst  

Hong, Bum-eui (Division of Material and Chemical Engineering, Hanyang University)
Lee, Jong-min (Division of Material and Chemical Engineering, Hanyang University)
Park, Yeung-ho (Division of Material and Chemical Engineering, Hanyang University)
Publication Information
Applied Chemistry for Engineering / v.19, no.4, 2008 , pp. 432-438 More about this Journal
Abstract
Hydrogenation reactions of p-toluidine over Ru/C were performed while varying reaction temperature, the hydrogen pressure, catalyst loading, solvent, and alkali additive and the effects on the reaction rates and product distribution were examined. 4-Methylcyclohexylamine was generated as a main product and bis(4-methyl cyclohexyl)amine was obtained as a resentative side-product for the hydrogenation reaction of p-toluidine. The selectivity of MCHA decreased with reaction temperature and the hydrogen pressure while increased with catalyst loading. IPA was the best solvent for MCHA. A mechanism of hydrogenation reaction of p-toluidine was suggested from the results. It was found that the presence of alkali salt increased MCHA by reducing BMCHA and rates of hydrogen reaction increased.
Keywords
p-Toluidine; Ru/C catalyst; hydrogenation; process variables; alkali additive;
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  • Reference
1 Francesco Siclari. U. S. Patent 3,632,558 (1988)
2 U. S. Patent 491,429 (1990)
3 P. N. Rylander and D. R. Steele, Engelhard Ind. Tech. Bull., 12, 20 (1963)
4 S. Nishimura, T. Shu, and T. Hara, Bull. Chem. Soc. of Jap., 39, 329 (1966)   DOI
5 U. S. Patent 2,606,924 (1952)
6 U. S. Patent 5,219,546 (1993)
7 H. Greenfield, J. Org. Chem., 29, 3082 (1964)   DOI
8 S. Nishimura, T. Shu, and T. Hara, Bull. Chem. Soc. of Jap., 44, 240 (1971)   DOI
9 A. E. Barkdoll, D. C. England, H. W. Gray, W. Kirk, and G. M. Whitman, J. Am. Chem. Soc., 75, 1156 (1953)   DOI
10 M. Curaya and S. Sprenger, Appl. Surf. Sci., 238, 77 (2004)   DOI   ScienceOn
11 U. S. Patent 2,606,925 (1952)
12 H.-S. Kim, S.-H. Seo, H.-J. Lee, S.-D. Lee, Y.-S. Kwon, and I.-M. Lee, J. Mol. Cat. A, 132, 267 (1998)   DOI   ScienceOn
13 P. N. Rylander and D. R. Steele, Engelhard Ind. Tech. Bull., 9, 19 (1962)
14 T. Minoru, F. Sachiko, and M. Michiya, J. of Biochemistry, 117, 719 (1995)   DOI