Catalytic technology for producing 2-nitro-4-methylsulfonylbenzoic acid

The invention relates to a method for producing 2-nitro-4-methylsulfonylbenzoic acid by using 2-nitro-4-methylsulfonyltoluene, which comprises the following steps of: reacting 2-nitro-4-methylsulfonyltoluene serving as a raw material with air (oxygen-enriched air or oxygen) serving as an oxidizing a...

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Bibliographic Details
Main Author LONG XIANGLI
Format Patent
LanguageChinese
English
Published 26.01.2024
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention relates to a method for producing 2-nitro-4-methylsulfonylbenzoic acid by using 2-nitro-4-methylsulfonyltoluene, which comprises the following steps of: reacting 2-nitro-4-methylsulfonyltoluene serving as a raw material with air (oxygen-enriched air or oxygen) serving as an oxidizing agent in an acidic aqueous solution at the atmospheric pressure of 4-50 and the temperature of 100-300 DEG C; the method comprises the following steps: forming a gas-liquid-solid three-phase reaction by using a multi-element catalytic system consisting of a metal oxygen-containing compound, metal ions or rare earth ions and halogen, and oxidizing 2-nitro-4-methylsulfonyltoluene into 2-nitro-4-methylsulfonylbenzoic acid. The method provided by the invention can overcome the defects of large output of waste gas and waste water, serious corrosion, low selectivity, high production cost and the like in the existing 2-nitro-4-methylsulfonylbenzoic acid production method, reduces environmental pollution, and realizes clean
Bibliography:Application Number: CN202311193315