Catalysts for the o-substitution of phenols

Details Catalysts for the o-substitution of phenols Catalysts for the o-substitution of phenols

1982-02-08

1983-09-27

Dees, Carl F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252462, 252468, 252469, B01J 2106, B01J 2386, B01J 2378

Patent

active

044068247

ABSTRACT:
This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, chromium, silicon and at least one oxide of an alkaline-earth metal, lanthanum and manganese or in the presence of a catalyst of oxides of iron, chromium, a metal from the group comprising germanium, titanium, zirconium, tin, lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.

REFERENCES:
patent: 2252842 (1941-08-01), Febrer
patent: 2448942 (1948-09-01), Winler et al.
patent: 2690425 (1954-09-01), Moses et al.
patent: 2846425 (1958-08-01), Hogan et al.
patent: 2891956 (1959-06-01), Oberlin et al.
patent: 2916531 (1959-12-01), Armstrong et al.
patent: 2959578 (1960-11-01), Hogan
patent: 3595870 (1971-07-01), Kehl
patent: 3953529 (1976-04-01), Yonemitsu et al.
patent: 4208537 (1980-06-01), Kawamats et al.
patent: 4290924 (1981-09-01), Leach

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