METHOD FOR PRODUCING DECANOLS BY MEANS OF HYDROGENATING DECENALS

摘要

THE PRESENT INVENTION RELATES TO A METHOD FOR PRODUCING AT LEAST ONE DECANOL BY MEANS OF HYDROGENATING AT LEAST ONE DECENAL, WHEREIN A FIRST HYDROGENATION IS CARRIED OUT IN THE LIQUID PHASE ON A SOLID FIRST CATALYST, WHEREIN THE FIRST CATALYST CONTAINS COPPER AND NICKEL. THE AIM OF THE INVENTION IS TO PROVIDE A METHOD OF THE TYPE MENTIONED ABOVE, ACCORDING TO WHICH DECENALS CAN BE HYDROGENATED INTO DECANOLS IN HIGH YIELDS EVEN AFTER LONG OPERATING PERIODS. THE CONTENT OF NON-REACTED DECENALS IN THE HYDROGENATION DISCHARGE IN PARTICULAR SHOULD BE LESS THAN 1500 PPM. SAID AIM IS ACHIEVED BY CARRYING OUT THE HYDROGENATION IN TWO STEPS, WHICH IS TO SAY IN A FIRST STEP IN A KNOWN MANNER USING A CATALYST COMPRISING COPPER, NICKEL AND OPTIONALLY CHROMIUM AND/OR BARIUM OXIDE, AND SUBSEQUENTLY IN A SECOND STEP USING A DIFFERENT CATALYST THAT MUST BE FREE OF COPPER, CHROMIUM AND NICKEL. NO AVAILABLE FIGURE.