Acetic Acid → Maleic Acid

HRID 1982272Notes

Reaction equation

HRID 1982272 reaction equation
[N+]([O-])([O-])=O.[K+].[C:6]([OH:11])(=[O:10])[C:7]([CH3:9])=[CH2:8].[C:12]([OH:15])(=[O:14])C>[Mo]>[C:12]([OH:15])(=[O:14])/[CH:8]=[CH:7]\[C:6]([OH:11])=[O:10].[C:6]([OH:11])(=[O:10])/[C:7](=[CH:9]\[C:12]([OH:15])=[O:14])/[CH3:8]

Participants

6

Reactant 3

HCID 176Acetic AcidHCID 4093Methacrylic AcidHCID 24434Potassium Nitrate

Product 2

HCID 444266Maleic AcidHCID 643798Citraconic acid

Reagents, catalysts & solvents 1

HCID 23932MolybdenumCatalyst

Procedure

A catalyst is prepared using the general method of preparation described in Example 3, but without the addition of potassium nitrate and with a larger amount of molybdenum. The resulting catalyst corresponds to the formula W6Mo6.4 P1As0.2 Cu0.25 Ox. Under the test conditions of Example 3 and at a bath temperature of 306° C., the conversion is 67.2 mole %, and the selectivities with respect to methacrylic acid and acetic acid are 81.7 mole % and 5.1 mole % respectively. Maleic acid and citraconic acid are formed in a total amount of 1.8%.

Workup

  1. customA catalyst is prepared
  2. customthe general method of preparation
  3. customUnder the test conditions of Example 3 and at a bath temperature of 306° C., the conversion is

Sources & evidence

ORD record
ord-21c816345b5545dcb789298759f0a31b
Source dataset
uspto-grants-1986_06
Patent number
US04595778

Reaction notes

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