FIELD: chemistry.
SUBSTANCE: described is catalyst for isomerisation of xylols, which includes in wt %: zeolite ZSM-5 - 10-35, calcium 0.05-1.0, calculated per zeolite, sodium 0.05-0.12, calculated per zeolite, aluminium oxide - the remaining part. Also described is method of preparing said catalyst, which includes mixing of aluminium hydroxide with zeolite ZSM-5, processing of obtained mixture with water solutions of calcium and, possibly, sodium compounds, with following forming and burning of obtained extrudates.
EFFECT: ensuring of xylol isomerisation until equilibrium composition of isomer is achieved, reduction of xylol loss at isomerisation temperature 400-460°C, increase of level of ethyl benzene, n-Nona and cumene conversion.
3 cl, 1 tbl, 9 ex
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