| 摘要 |
<p>PURPOSE:To restore the high activity of a rhodium tertiary phosphine hydroformylation catalyst under gentle conditions by subjecting the catalyst to a hydrogen treatment in the presence of a solid hydrogenation catalyst in an org. solvent soln. state. CONSTITUTION:A rhodium tertiary phosphine hydroformylation catalyst is added to an org. solvent of an arom. hydrocarbon or the like such as benzene, toluene, xylene, ethyl benzene, or the like to prepare an org. solvent soln. of rhodium complex. 0.1-50%, more preferably, >=1% hydrogenation catalyst is added to said org. solvent soln. of the complex and gaseous hydrogen is introduced to 0-70kg/cm<2> thereto and the soln. is subjected to a hydrogen treatment at 30-150 deg.C. The catalyst consisting essentially of group VIII metals such Ni, Co, Rh, Pt or the like in particular is effective as the hydrogenation catalyst. If the hydrogenation catalyst is used in a suspended state after the hydrogenation treatment, the catalyst is separable by filtration, decantation, etc.</p> |
