hydrolysis hydrogenation
1.Refining xylitol was prepared from corncob through the processing of washing,drying,crashing (granularity 3～5 mm),acid hydrolysis,neutralization,evaporation,bleaching,ion exchanging,hydrogenation,concentration and crystallization.
2.Herbac was prepared by cyclization of dihydromyrcene then hydrolysis and oxidation, or by addition of methyl heptenone with HC≡CNa then rearrangement, hydrogenation.
3.Activity of the catalyst was eveluated with SO_2 hydrogenation and H_2S hydrolysis. Activitiy of wet-mixing kneading CoMo/Al_2O_3 catalyst was compared with catalyst of same composition prepared by impregnation.
