METHOD FOR REFORMING BENZINE FRACTIONS Russian patent published in 1997 - IPC

FIELD: petrochemistry. SUBSTANCE: reforming is carried out at 460-520 C and at pressure 1.5-4 MPa in the presence of two catalysts being consequently disposed. The first catalyst comprises, mas. %: platinum or its mixture with manganese (mass ratio of platinum and manganese being (1-12):((4-1)), 0.2-0.6; aluminium perrhenate 0.01-0.2; fluorine, 0.2-0.5; or chlor, 0.6-1.5; aluminium oxide, the balance. The second catalyst comprises, mas. %: platinum or its mixture with promoter at their mass ratio (0.5-12):1, 0.2-1.2; non-acid zeolite having medium porosity, 40-75; aluminium oxide, the balance. Said promoter is chosen of group comprising rhenium, iridium, molybdenum, rhodium and tungsten. Mass ratio of the first and second catalyst is (0.33-10):1. EFFECT: improved efficiency of the method. 1 tbl