| abstract |
The present invention relates to a process for improving the pour point of a raw material comprising paraffin containing 10 or more carbon atoms, which method comprises a temperature in the range of 170 ° C. to 500 ° C., a pressure in the range of 1 bar to 250 bar, 0.05 h − In the presence of hydrogen at an hourly space velocity in the range of 1 to 100 h −1 , in the presence of hydrogen at a rate of 50 to 2000 liters per liter of raw material, the raw material to be treated is subjected to EU-1 zeolite and at least one hydro-dehydrogenation ( contact with a catalyst comprising a hydro-dehydrogenating component. The oil obtained has a good pour point and a high viscosity index (VI). The method is also applicable to gas oils and other raw materials that require a reduced pour point. The present invention further relates to EU-1 zeolites in which some of the elements T (Al, Ga, Fe or B) are removed and have a Si / T atomic ratio of 10 or more. |