LIQUID-PHASE OXYGEN OXIDATION OF p-XYLENE AND p-TOLUIC ACID UNDER $gamma$ RADIATION (in Japanese)
Journal Article
·
· Tokyo Kogyo Shikensho Hokoku (Japan) Changed to J. Natl. Chem. Lab. Ind.
OSTI ID:4081355
The effects of gamma radiation on the liquid-phase oxygen oxidation of p-xylene and p-toluic acid were studied, comparing with that of fluoresent illumination or no illumiuation (i.e. the dark state). In these studies the usual method of bubbling oxygen gas into the reaction liquid in a tubular glass reactor under atmospheric pressure was used, and Co/sup 60/ of 2,000 curies and 220 curies were used as the gamma -ray sources. ln the oxidation of p-xylene, the initial rate of formation of hydroperoxide in the case of gamma -ray radiation as well as in that of fluorescent illumination was about two times the rate for no illumiuation. But the gamma radiation and the fluorescent illumination could not get the reaction to go over 4 to 5 mole % of the rate of producing hydroperoxide plus acids, which was similarly recognized to be the limit in the case of no illumination, perhaps because of formation of inhibitors during the oxidation. In these three cases, the reaction products showed similar compositions and contained no terephthalic acid. In the oxidation of p-toluic acid, some promoting effects of gamma radiation were recognized in some conditions, but they were not so large that the radiation-oxidation method seemed to be as attractive as the method of synthesizing terephthalic acid. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-006031
- OSTI ID:
- 4081355
- Journal Information:
- Tokyo Kogyo Shikensho Hokoku (Japan) Changed to J. Natl. Chem. Lab. Ind., Journal Name: Tokyo Kogyo Shikensho Hokoku (Japan) Changed to J. Natl. Chem. Lab. Ind. Vol. Vol: 55; ISSN TKSHA
- Country of Publication:
- Country unknown/Code not available
- Language:
- Japanese
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