Process for production cyclohexanol

Details Process for production cyclohexanol Process for production cyclohexanol

1989-04-10

1991-05-14

Lone, Werren B.

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

Organic compounds

Oxygen containing

568814, 568830, C07C 2920, C07C 3508

Patent

active

050157876

ABSTRACT:
In a process for production of cyclohexanol comprising the selective catalytic hydrogenation of phenol to a product mixture comprising a major portion of cyclohexanol and a substantially smaller portion of cyclohexanone, then distillation of said product mixture to obtain cyclohexanol containing a minor amount of cyclohexanone meeting desired specification levels; the improvement comprising adding to said product mixture an effective amount of a polyamine such as hexamethylene diamine and distilling the product mixture to obtain an improved yield of said cyclohexanol containing a minor amount of cyclohexanone.

REFERENCES:
patent: 2794056 (1957-05-01), Winstrom
patent: 4088703 (1978-05-01), Yeh et al.
patent: 4187152 (1980-02-01), Roth, Jr. et al.
patent: 4272326 (1981-06-01), Hertzog et al.
patent: 4664755 (1987-05-01), Nienhaus et al.

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