Catalytic dehydroxylation of phenols

Details Catalytic dehydroxylation of phenols Catalytic dehydroxylation of phenols

1982-04-23

1984-05-29

Gantz, Delbert E.

Mineral oils: processes and products

Refining

Organic acid or phenol contaminant removal

585469, C10G 1700, C10G 4500, C07C 120

Patent

active

044513569

ABSTRACT:
Phenolic compounds are dehydroxylated in the vapor phase by contacting with a reducing atmosphere substantially comprising hydrogen sulfide as the reducing agent in the presence of a sulfur-tolerant metal sulfide catalyst. The additional presence of hydrogen gas helps to desulfurize the catalyst and maintain catalytic activity. The process is useful in the treatment of phenolic naphtha fractions present in coal liquids, produced by pyrolysis or direct coal liquefaction.

REFERENCES:
patent: 1430585 (1922-10-01), Ramage
patent: 2921023 (1960-01-01), Holm
patent: 4062904 (1977-12-01), Schmerling
Org. Khim. vol. 13, No. 12, p. 2622, Dec. 1977.
"Sulphide Catalysts, Their Properties and Applications", Weisser and Landa (1973) p. 157.
"Coal Hydrogenation Vapor Phase", E. E. Donath, Advances in Catalysis, vol. VIII, 251 (1956).
"Catalytic Hydrogenation of Phenols", Shuikin and Erivanskaya: Russian Chemical Reviews, vol. 29, 309-320 (1960).
"Production of Toluene from Coal Tar", Cawley et al., J. Inst. Petrol. 32, 660-683 (1946).
"Catalytic Hydrogenation of Model Nitrogen, Sulfur, and Oxygen Compounds", Rollmann: Journal of Catalysis 46, 243-252 (1977).

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