FIELD: oil and gas industry.
SUBSTANCE: invention relates to catalysts used in petrochemical technology. Disclosed is silica-alumina catalyst containing following components in terms of oxides (wt%): aluminium oxide 5.0-30.0, iron oxide 0.1-3.0, magnesium oxide 0.1-3.0, calcium oxide 0.1-5.0, potassium oxide 0.1-3.0, sodium oxide 0.1-3.0, titanium oxide 0.1-3.0, boron oxide 3.0-10.0, silicon oxide is rest.
EFFECT: presence of boron oxide in catalyst reduces coke deposit at processing of dimethyl dioxane synthesis by-products at maintaining high conversion and selectivity.
1 cl, 1 tbl
