CATALYST FOR PROCESS OF DEHYDRATION OF ETHANOL TO ETHYLENE, PREPARATION METHOD THEREOF AND METHOD OF PRODUCING ETHYLENE Russian patent published in 2017 - IPC B01J21/04 B01J37/04 C07C1/24 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing ethylene during dehydration of ethanol using highly active aluminium oxide catalysts. Described is a granular nanostructured aluminium oxide catalyst, having composition containing aluminium oxide, sodium and additionally sulphur, or phosphorus, or chlorine in following amount, wt%: sodium 0.005–0.02, sulphur 0–5, phosphorus 0–2.8, chlorine 0–2.6. Catalyst has a bi-disperse porous structure, micropore volume varies from 0.06 to 0.18 cm³/g, mesopore volume of 0.2–0.32 cm³/g, total pore volume of 0.25–0.55 cm³/g, average diameter varies from 3–5.5 nm with catalyst specific surface area of 200–350 m²/g. Aluminium oxide is a mixture γ-Al₂O₃, χ-Al₂O₃ and x-ray amorphous phase of aluminium oxide in following ratio, wt%: χ-Al₂O₃ and x-ray amorphous phase of 60–70, γ-Al₂O₃ 30–40. Described is a method of preparing said catalyst and method of producing ethylene using said catalyst.

EFFECT: simple technique of preparing catalyst and increased output of ethylene.

13 cl, 16 ex, 3 tbl