Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1979-10-15
1981-04-21
Hearn, Brian E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
2604299, 252416, 252419, 423622, 423623, 562482, C07C 6326, C07C 6308
Patent
active
042634512
ABSTRACT:
A method for removing carbonaceous impurity from zinc oxide by contacting a water slurry of contaminated zinc oxide with oxygen in a reactor at reaction conditions sufficient to produce oxide products of the carbon contaminants and passing the reactor effluent through a filter to collect solid zinc oxide while passing the oxides of carbon through the filter. In a preferred embodiment, contaminated zinc oxide separated from the reaction product in the preparation of terephthalic acid from benzoic acid using zinc benzoate catalyst is subjected to treatment for removal of carbonaceous contaminants before being recycled to reaction with molten benzoic acid to produce zinc benzoate catalyst used in the reaction.
REFERENCES:
patent: 1426349 (1922-08-01), Booge
patent: 3251653 (1966-05-01), Aditya
patent: 3261863 (1966-07-01), Schenk
patent: 3406228 (1968-10-01), Hardy
patent: 3607065 (1971-09-01), Forseth
patent: 3681031 (1972-08-01), Johnson
patent: 3776930 (1973-12-01), Wu
patent: 3873609 (1975-03-01), Wu
patent: 3875218 (1975-04-01), Wu
patent: 3989804 (1976-11-01), Vanderveen
Lewis Ronnie L.
Sherk Fred T.
Hearn Brian E.
Phillips Petroleum Company
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