COMBINED CATALYST AND METHOD FOR OBTAINING TRIPTANE ENRICHED ENVIRONMENTALLY FRIENDLY HIGHLY OCTANE GASOLINE IN PRESENCE THEREOF Russian patent published in 2018 - IPC B01J29/12 B01J29/40 B01J23/04 B01J23/02 B01J23/10 B01J23/44 B01J21/12 

FIELD: manufacturing technology.

SUBSTANCE: present invention relates to the production of high-octane gasoline with a low content of aromatics, but with a high content of triptane (2,2,3-trimethylbutane), and can be used in the field of production of motor fuel. Combined catalyst for producing ecologically clean gasoline enriched with triptane includes modified zeolites HZSM-5 and HY with their mass ratio of 1:1–1:2, and the modified zeolite HZSM-5 has the following composition, wt. %: zeolite HZSM-5 with SiO₂/Al₂O₃ = 37, containing not more than 0.04 wt. % sodium oxide – 50–70, Mg – 0.1–2.0, alumina – the rest, and the modified zeolite HY has the following composition, wt. %: zeolite HY with SiO₂/Al₂O₃ = 2.73, containing not more than 0.02 wt. % sodium oxide – 50–70, Pd – 0.1–1.0, lanthanum oxide – 0.5–3.5, aluminum oxide – the rest. Method for producing an enriched triptane environmentally friendly gasoline with an octane number of at least 90 points by a research method involves the conversion of DME and/or methanol in the presence of the specified combined catalyst.

EFFECT: technical result consists in obtaining a gasoline enriched with triptane, increasing the selectivity for highly branched C₅₊-hydrocarbons, reducing the content of aromatic hydrocarbons in products, in particular durol, the ecological cleanness of the product.

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