METHOD FOR CYCLIZATION OF NORMAL ALKANES Russian patent published in 2017 - IPC C07C5/387 C07C5/41 C07C15/02 C10G35/95 B01J29/60 

FIELD: chemistry.

SUBSTANCE: invention refers to a method for cyclization of normal n-alkanes consisting in the fact that gas and raw material mixture consisting of hydrogen-containing gas and straight-run gasoline fraction boiling away within the range of 85-180°C or C₇-C₁₂ synthetic hydrocarbon fraction or C₇-C₁₀ individual n-alkane mixture is passed through catalyst layer at temperature of 400-520°C, process pressure of 0.1-3.5 MPa, volume feed rate of the raw material within the range of 0.5-2.54 h^-1, ratio of hydrogen-containing gas to the raw material 800:1-1500:1 Nm³/m³ with catalyst containing, wt. %: platinum 0.20-0.85, zeolite KL 40.0-80.0, aluminum oxide - the rest. The catalyst contains zeolite KL crystallite morphology of which corresponds to "short cylinder" type, crystallite size being from 200 to 2000 nm and ratio of crystallite length to diameter being from 0.2:1 to 2:1.

EFFECT: increased catalyst activity and providing the output of stable catalysate of not less than 80 wt % with cyclic hydrocarbon content of not less than 55wt % including C₈+ arene content of not less than 63 rel% what allows to qualify it is a component of motor car and aviation gasolines or jet engine fuel.

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