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US 5,491,268 AGranted
Process for removal of acidic compounds from phenol process streams
AssigneeGeneral Electric Company
InventorMichael J. Cipullo
Life of this patent
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Abstract
A process for purifying phenol, phenol-type compounds, and substituted phenol and phenol-type compounds of contamination by components more acidic than the phenol component comprising treating a phenol containing process stream by contacting the stream with an amphoteric porous inorganic oxide.
Claims16
A process for the purification of a phenolic compound comprising:
- a) preparing a phenolic compound by a process selected from the group consisting of decomposition of cumene hydroperoxide, the decomposition of benzoic acid, the de-sulfonation of benzene sulfonic acid, the hydrolysis of chlorobenzene, the catalytic hydrolysis of chlorobenzene, the catalytic dehydrogenation of cyclohexanol, and the cracking of by-products from the manufacture of bisphenol compounds, and
- b) purifying the phenolic compound by contacting the phenolic compound with an inorganic oxide adsorbent selected from the group consisting of alumina, titania, and magnesia.
A process for the removal of acidic contaminants from a process stream comprising a phenolic compound comprising:
- a) preparing a phenolic compound by a process selected from the group consisting of decomposition of cumene hydroperoxide, the decomposition of benzoic acid, the de-sulfonation of benzene sulfonic acid, the hydrolysis of chlorobenzene, the catalytic hydrolysis of chlorobenzene, the catalytic dehydrogenation of cyclohexanol, and the cracking of by-products from the manufacture of bisphenol compounds, and
- b) purifying the phenolic compound by contacting the phenolic compound with an inorganic oxide adsorbent selected from the group consisting of alumina, titania, and magnesia whereby the concentration of said acidic contaminants in said process streams containing said phenolic compounds is reduced.
A process for the removal of acidic contaminants from a process stream comprising a phenolic compound consisting essentially of:
- a) preparing a phenolic compound by a process selected from the group consisting of decomposition of cumene hydroperoxide, the decomposition of benzoic acid, the de-sulfonation of benzene sulfonic acid, the hydrolysis of chlorobenzene, the catalytic hydrolysis of chlorobenzene, the catalytic dehydrogenation of cyclohexanol, and the cracking of by-products from the manufacture of bisphenol compounds, and
- b) purifying the phenolic compound by contacting the phenolic compound with an inorganic oxide adsorbent selected from the group consisting of alumina, titania, and magnesia whereby the concentration of said acidic contaminants in said process streams containing said phenolic compounds is reduced.
Dependencies are inferred from the claim text.