rhodium complex of silica-supported polytitazane (ab-briviated as Ti-N-Rh) has been prepared. It has been found that Ti-N-Rh could catalyze the hydroformylation of cyclohexene at 120℃ and under 60 atm. (CO/H2 = 1)
the yield of cyclo-hexyl formaldehyde amouted to 95%. The stability of Ti-N-Rh is very good for the reaction
. and the total turnover numbers amounted to over 20