Siberian Federal University

The possibility of obtaining porous materials with magnetic properties and pyrolysis bio- oil in the process of thermocatalytic transformation of fir bark sawdust is shown. It is established that ZnCl2 and NiCl2 promote multistage destruction of fir bark biomass in the process of thermochemical transformation. The solid product obtained from a mixture of fir bark sawdust and zinc chloride contains a crystalline phase of ZnO and has a specific surface area of up to 1160 m2/g, and the solid product obtained from a mixture of fir bark sawdust and nickel chloride has magnetic properties and is classified as a soft magnetic material. It was found that the modifiers significantly affect the composition of the bio-oil. The bio-oil obtained from the original bark contains a wide range of organic compounds, the main ones being phenols, methoxyphenols, carboxylic acids and their homologues. Pyrolysis of the modified bark leads to enrichment of liquid products with carboxylic acids and esters of carboxylic acids. It is assumed that an increase in the selectivity of individual compounds in the pyrolysis liquid with the simultaneous formation of a highly porous composite from the modified fir bark is associated with the thermocatalytic effect of the modifiers