Process for the production of diphenylamine

Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing

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564433, 502355, C07C 8754

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048145041

ABSTRACT:
Diphenylamine is produced by contacting aniline with an alumina catalyst having at least about 30 percent by volume of its total porosity in the form of pores having a diameter of between about 120 and about 200 Angstroms and a sulfur content, as measured in the form of SO.sub.4, of less than about 0.02 percent by weight at between about 380.degree. and 475.degree. C.

REFERENCES:
patent: 3118944 (1964-01-01), Addis
Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 2, p. 311 (3d Ed., 1978).
H. Rootare, "A Short Literature Review of Mercury Porosimetry", Aminco Laboratory News, pp. 4A-4H, 1968.
Ogasawasa, S., J. of Catalysis, vol. 25, pp. 105-110 (1972).
Ogasawasa, S., J. of Catalysis, vol. 29, pp. 67-74 (1973).

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