| 摘要 |
A METATHESIS CATALYST WHICH IS A COMBINATION INCLUDING A CATALYST 1 COMPRISING A COMPOUND THAT CONTAINS AT LEAST ONE METAL ELEMENT SELECTED FROM TUNGSTEN, MOLYBDENUM AND RHENIUM AND A CATALYST 2 COMPRISING AT LEAST ONE SELECTED FROM MAGNESIUM OXIDE AND CALCINED HYDROTALCITE IS EASILY AND EFFECTIVELY REACTIVATED FROM A DEGRADED STATE DUE TO LONG-TERM REPETITIVE CYCLES OF REACTION AND REGENERATION AT HIGH TEMPERATURE FOR BURNING OFF POISONOUS SUBSTANCES OR COKES, TO LIKE-NEW CONDITION OR A DESIRED LEVEL. AN OLEFIN PRODUCTION PROCESS BY A METATHESIS REACTION INCLUDES A STEP OF PERFORMING THE REACTIVATION. A DEGRADED METATHESIS CATALYST IS EASILY AND EFFECTIVELY REACTIVATED BY BEING CONTACTED WITH WATER AT NOT MORE THAN 50oC OR WATER VAPOR AT NOT MORE THAN 170oC. |
