Efficient hydrogenation of ethyl lactate to 1,2-propanediol over Ru-B/TiO2 in aqueous solution

Catalyst RU-B/TiO2 showed ail excellently catalytic performance for the hydrogenation of ethyl lactate to 1,2-propanediol (1,2-PDO) under mild conditions (90 degrees C and 4.0 MPa H,) without any additive. Especially, the activity of the catalyst was,really improved in aqueous Solution. The conversion of ethyl lactate was up to 98% and the selectivity to 1,2-propanediol was over 95%.