Isomerization of cresols

Details Isomerization of cresols Isomerization of cresols

1983-09-21

1985-03-05

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568716, C07C 3748, C07C 3700

Patent

active

045032696

ABSTRACT:
An improvement in a process for the isomerization of cresols may be obtained by effecting the isomerization reaction of a cresol in the presence of a crystalline aluminosilicate zeolite catalyst and added hydrogen. The added hydrogen will provide stability and longer life to the catalyst as well as a more stable selectivity to the desired isomers. The isomerization reaction is effected at temperatures ranging from about 250.degree. to about 450.degree. C. and pressures ranging from 2 to about 75 atmospheres in the presence of added hydrogen, said hydrogen being present in a mole ratio in the range of from about 1:1 to about 10:1 moles of hydrogen per mole of cresol.

REFERENCES:
patent: 2551628 (1951-05-01), Nickels
patent: 3655780 (1972-04-01), Kohn et al.
patent: 3702886 (1972-11-01), Argauer et al.
patent: 4283571 (1981-08-01), Keim et al.

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