METHOD OF PRODUCING SULPHOCATIONITE CATALYST Russian patent published in 2024 - IPC B01J31/02 C07C67/08 C08J11/16 

FIELD: chemistry.

SUBSTANCE: invention relates to catalytic chemistry, particularly to a method of producing sulphocationite catalysts for dehydration of alcohols. Described is the preparation of sulphocationite catalysts. Method involves treating wood processing wastes – sulphonated lignins (lignosulphonates) – with sulphuric acid, washing with water to remove excess sulphuric acid and drying, followed by additional steam treatment of the obtained product at temperature of 100-130 °C. Treatment with sulphuric acid is carried out by impregnating lignins with sulphuric acid at room temperature (18-25 °C) for 0.5-1 hours with vigorous stirring. Then the product is held at temperature of 100-120 °C for 2-4 hours to reduce catalyst losses, increase the degree of sulphonation and increase catalyst activity.

EFFECT: invention increases catalytic properties of sulphocationite.

1 cl, 1 tbl, 4 ex