Acrylic Acid → Acrylic Acid

HRID 1851870Notes

Reaction equation

HRID 1851870 reaction equation
[C:1]([O:6][CH3:7])(=[O:5])[CH:2]([CH3:4])O.C(O)(=O)C=C>>[C:1]([OH:6])(=[O:5])[CH:2]=[CH2:4].[C:1]([O:6][CH3:7])(=[O:5])[CH:2]=[CH2:4]

Participants

4

Reactant 2

HCID 6581Acrylic AcidHCID 11040Methyl Lactate2×

Product 2

HCID 6581Acrylic AcidHCID 7294Methyl Acrylate

Procedure

Efficient dehydration of methyl lactate to acrylic acid using Ca3(PO4)2—SiO2 catalyst by Jong-Min Lee et. al (Catalysis Communications, Volume 11, Issue 15, 25 Sep. 2010, Pages 1176-1180) describes a series of catalysts consisting of Ca3(PO4)2 supported on SiO2 (silicate, colloidal silica and fumed silica) and Ca3(PO4)2—SiO2 (silicate) with different loadings of Ca3(PO4)2 (70 to 95 wt. %) was prepared by sol-gel and wet-impregnation methods. All the catalysts were found to be active in the vapor phase dehydration of methyl lactate (ML) to give mainly acrylic acid (AA), methyl acrylate (MA). Among the catalysts, Ca3(PO4)2—SiO2(silicate) of (80:20 wt. %) was found to be an efficient catalyst in the dehydration of Methyl Lactate, which gave 73.6% conversion of Methyl Lactate with selectivity for Acrylic Acid and Methyl Acrylate together (77.1%).

Workup

  1. customwas prepared by sol-gel and wet-impregnation methods

Sources & evidence

ORD record
ord-e71d62384ac24105b5f3904c25308f60
Source dataset
uspto-grants-2015_02
Patent number
US08957250B2

Reaction notes

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