Acetic Acid → Maleic Acid

HRID 1982273Notes

Reaction equation

HRID 1982273 reaction equation
[C:1]([OH:6])(=[O:5])[C:2]([CH3:4])=[CH2:3].[C:7]([OH:10])(=[O:9])C>>[C:7]([OH:10])(=[O:9])/[CH:3]=[CH:2]\[C:1]([OH:6])=[O:5].[C:1]([OH:6])(=[O:5])/[C:2](=[CH:4]\[C:7]([OH:10])=[O:9])/[CH3:3]

Participants

4

Reactant 2

HCID 176Acetic AcidHCID 4093Methacrylic Acid

Product 2

HCID 444266Maleic AcidHCID 643798Citraconic acid

Procedure

A catalyst of the general formula W6Mo4W0.3 P1As0.3 Sb0.25 Cu0.3 Cs0.8 Ox is prepared by the procedure described in Example 1, and is tested under the conditions stated in Example 2. At a bath temperature of 324° C., the conversion is 54.5 mole %, and the selectivities with respect to the methacrylic acid and acetic acid are 85.5 mole % and 2.7 mole % respectively. Maleic acid and citraconic acid are formed in a total amount of 0.85%, based on the methacrylic acid.

Workup

  1. customA catalyst of the general formula W6Mo4W0.3 P1As0.3 Sb0.25 Cu0.3 Cs0.8 Ox is prepared by the procedure
  2. customAt a bath temperature of 324° C., the conversion is

Sources & evidence

ORD record
ord-f7a28b0c8d9e44dda128e78153f23333
Source dataset
uspto-grants-1986_06
Patent number
US04595778

Reaction notes

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