Production of polycarboxylic acids with a molybdenium-activated cobalt catalyst
This paper describes a process for oxidizing polymethylbenzenes with molecular oxygen to benzene polycarboxylic acids under liquid-phase conditions. It comprises conducting the oxidation in the presence of C{sub 1-6} aliphatic carboxylic acid or a mixture of a C{sub 1}-C{sub 6} aliphatic acid and water, wherein the carboxylic acid is a solvent for the reaction and also for a cobalt-molybdenum-manganese-bromine catalyst, at temperatures in the range of about 100{degrees} to about 250{degrees}C in the presence of a catalyst system consisting essentially of a source of bromine, cobalt, molybdenum, and manganese wherein molybdenum is an effective promoter for the cobalt-manganese-bromine catalyst system and wherein the gram-atom ratio of molybdenum to cobalt is in the range of about 0.001 to about 1.0 and the ratio of cobalt to manganese is in the range of about 0.01 to about 100.
- Assignee:
- Amoco Corp., Chicago, IL (USA)
- Patent Number(s):
- US 4992580; A
- Application Number:
- PPN: US 7-782230; TRN: 91-031504
- OSTI ID:
- 5119753
- Resource Relation:
- Patent File Date: 30 Sep 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
02 PETROLEUM
CARBOXYLIC ACIDS
PRODUCTION
COBALT
CATALYTIC EFFECTS
BROMINE
CATALYST SUPPORTS
CATALYSTS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
LIQUIDS
MANGANESE
MOLYBDENUM
PETROLEUM REFINERIES
PHASE TRANSFORMATIONS
ELEMENTS
FLUIDS
HALOGENS
INDUSTRIAL PLANTS
KINETICS
METALS
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
REACTION KINETICS
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties
020400 - Petroleum- Processing
020500 - Petroleum- Products & By-Products