FIELD: petroleum chemistry and petroleum processing.
SUBSTANCE: method involves contacting the raw containing 6-60 vol.% of propane and/or butane, and methane and/or ethane as a diluting agent also with catalyst comprising zeolite of the pentasil group. Contacting is carried out at temperature 480-600°C, the volume rate raw feeding 300-1000 h-1, under pressure 0.1-3 MPa and partial pressure of propane and/or butane 0.8 MPa, not above. Invention provides enhancing stability of the catalyst performance and retaining the high degree of raw conversion.
EFFECT: improved method for stability enhancement.
2 cl, 1 tbl, 7 ex
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