Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1979-02-02
1981-03-24
Kyle, Deborah L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
423523, 423531, C07C 7910
Patent
active
042579864
ABSTRACT:
This invention relates to an improvement in a process for the manufacture of a nitroaromatic compound produced by the mixed sulfuric-nitric acid nitration method. The improvement resides in the refining of the aqueous acid mixture and comprises the following sequential steps: (a) contacting the mixed aqueous acid mixture, after nitration, with an oxidizing or a reducing agent under conditions effective for removing contaminant nitrous acid; (b) contacting the aqueous acid mixture in step (a) with feed aromatic compound to remove contaminant organics and residual nitric acid and then, if necessary, (c) contacting the remaining acid mixture with sufficient oxidizing agent under oxidizing conditions to remove residual organic components.
REFERENCES:
patent: 2355702 (1944-08-01), Brooks
patent: 2773911 (1956-12-01), Dubois et al.
patent: 2849497 (1958-08-01), Buchanan
patent: 2971819 (1961-02-01), Antelman
patent: 3204000 (1965-08-01), Samuelsen
patent: 3856673 (1974-12-01), La Mater
patent: 4155989 (1979-05-01), Miller
"Removal of Nitrose from Sulfuric Acid", Chem. Abstracts, vol. 53 (1959) Abstract #8557d.
Huang Der-Shing
Milligan Barton
Air Products and Chemicals Inc.
Brewer Russell L.
Innis E. Eugene
Kyle Deborah L.
LandOfFree
Process for refining aqueous acid mixtures utilized in nitration does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for refining aqueous acid mixtures utilized in nitration, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for refining aqueous acid mixtures utilized in nitration will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2407959