Preparation of phthalic anhydride from o-xylene

Details Preparation of phthalic anhydride from o-xylene Preparation of phthalic anhydride from o-xylene

C - Chemistry, Metallurgy

07

D

260/365.2

C07D 307/89 (2006.01) B01J 23/22 (2006.01) B01J 27/198 (2006.01) C07C 51/265 (2006.01)

Patent

CA 2040981

BASFAKTIENQESELLSCHAFT O.Z.0050/41580 Preparation of phthalic anhydride from o-xylene Abstract of the disclosure: Phthalic anhydride is prepared in a multiple tube reactor provided withseparate salt baths, the temperature of the salt bath used for cooling the first layer of catalyst, as regarded in the direction of flow of the reaction mixture, being from 2° to 20°C higher than that of the salt bath(s) associated with the following layer(s).

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