Abstract
1-Butene, 2-butene and iso-butene were hydro-formylated in the presences of cobalt naphthenate as catalyst and of Pd-zeolite as its promoter .Aldehydes thus obtained from I-butene and 2-butene were Iargely C5-normalaldehyde, while nearly 96% of the alde hyde from iso-butene was of iso-stucture.The Oxo reactions of 2-butene and iso- butene were much more accelerated by the co-presence of Pd-zeolite, compared with that of I-butene.