METHOD OF PRODUCING CONJUGATED DIENE Russian patent published in 2020 - IPC C07C1/24 C07C11/18 

FIELD: chemical or physical processes.

SUBSTANCE: invention relates to a method of producing a conjugated diene, involving a dehydration step γ,δ-unsaturated alcohol in presence of solid acid catalyst, having a Hammett acidity function (H₀) −12.2 or less, where the acid catalyst is a metal oxide supported on sulfuric acid, selected from sulphated tin (IV) oxide (SO₄/SnO₂, H₀=−18.0), sulphated zirconium dioxide (SO₄/ZrO₂, H₀=−16.1), sulphated hafnium oxide (SO₄/HfO₂, H₀=−16.0), sulphated titanium dioxide (SO₄/TiO₂, H₀=−14.6), sulphated aluminum oxide (SO₄/Al₂O₃, H₀=−14.6), sulphated iron (III) oxide (SO₄/Fe₂O₃, H₀=−13.0) and sulphated silicon dioxide (SO₄/SiO₂, H₀=−12.2).

EFFECT: method provides good yield under mild conditions.

5 cl, 2 ex