| 摘 要： | Ruthenium supported on rare earth oxides(REO)and the mixture ofrare earth oxides(MREO)was studied as heterogeneous catalyst in the 1-heptene hydroformylation under 5.0 MPa synthesis gas(CO/H_2)at 150℃ for20h.Of the rare earth oxides studied,most are better than Al_2O_3and CeO_2 isthe most efficient support.With MREO as support,the ruthenium content,solvents and pretreating condition were studied in 1-heptene hydroformylation.The results show that the best loading of ruthenium is 4% and non-polarcompounds such as cyclohexane,toluene are better solvents.Ru/MREO(3%)catalyst precarbonylated under 5.0 MPa synthesis gas(CO/H_2=1)at 150℃for 10h has high selectivity to aldehyde and low conversion of 1-heptene.TheFT-IR spectra of catalysts before and after reaction prove that rutheniumcarbonyls on the support surface are formed during the hydroformylation andthe precarbonylation processes,which are catalytic active,unstable anddecomposed during the reaction.
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