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Lett. 1990;11:167–170. doi:10.1109/55.61785

102 New Advances in Hydrogenation Processes - Fundamentals and Applications

10.1109/IEDM.1992.307451

Hydrogenation of benzoic acid using mono- and bimetallic catalyst of Ru, Pd, Co, and Re yielded different products. It was observed that 5% Ru/C was an active catalyst for hydrogenation of both aromatic ring and carboxylic group, while Pd/C catalyst hydrogenated only aromatic ring. Ru-Sn/Al<sup>2</sup> O3 is a chemoselective catalyst for hydrogenation of –COOH group of benzoic acid.

**Keywords:** hydrogenation, benzoic acid, catalysts, chemoselectivity, Ru/C, Ru-Sn/Al<sup>2</sup> O3
