Ru-Sn catalysts for selective hydrogenation of crotonaldehyde: effect of the Sn/(Ru + Sn) ratio - Riguetto, B. A.; Rodrigues, Christianne Elisabete da Costa; Morales, M. A.; Baggio-Saitovitch, Elisa; Gengembre, L.; Payen, E.; Marques, C. M. P.; Bueno, José Maria (Applied Catalysis A : General, 2007)