A process for nitration of C6H6 [71-43-2] with continuous removal of H2O formed in the process (by azeotropic distn. with C6H6) using the reaction heat was described in which the H2SO4 catalyst thus remained undild. and did not need to be regenerated. Requirements for minimizing HNO3 losses and keeping the HNO3 concn. to a min. in the mixed acid were discussed. [on SciFinder (R)]
Title
Nitrobenzene production with simultaneous azeotropic distillation
Published in
Chemie Ingenieur Technik
Volume
59
Issue
2
Pages
172-173
Date
1987
ISSN
0009-286X
Note
CAN 106:198076
45-4
Industrial Organic Chemicals, Leather, Fats, and Waxes
Ciba-Geigy A.-G.,Pratteln,Switz.
Journal
7664-93-9 (Sulfuric acid) Role: CAT (Catalyst use), USES (Uses) (catalysts, for nitration of benzene, avoidance of diln. of); 71-43-2 (Benzene) Role: RCT (Reactant), RACT (Reactant or reagent) (nitration of, with simultaneous azeotropic distn. of water); 98-95-3P (Nitrobenzene) Role: PREP (Preparation) (prodn. of, with simultaneous azeotropic distn. of water)
Written in german (Nitrobenzol-Herstellung bei gleichzeitiger Azeotrop-Destillation)
Record creation date
2006-04-18
