Process for photocatalytic hydrocarboxylation of methanol with CO2 to produce acetic acid
AssigneeCouncil of Scientific and Industrial Research
InventorsSuman Lata Jain, Sandhya Saini, Praveen Kumar Khatri, Indrajit Kumar Ghosh, Anjan Ray
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Abstract
The present invention discloses a photocatalytic process and methodology for the preparation of acetic acid by a hydrocarboxylation reaction of methanol using carbon dioxide under visible light irradiation. Importantly, the reaction occurred under ambient temperature and pressure condition using a readily available household LED lamp in the presence of a transition metal based molecular photocatalyst, homogeneous as well as supported to semiconductor support and a CO2-philic solvent without adding any external electron and proton donors.
Claims11
A hydrocarboxylation process for the synthesis of acetic acid comprising the steps of:
- a. combining methanol with CO2 in the presence of a CO2-philic solvent and a photocatalyst to obtain a reaction mixture;
- and
- b. irradiating the reaction mixture as obtained in step (a) under visible illumination to obtain the acetic acid;
- wherein the methanol and CO2-philic solvent is in a weight ratio of ranging from 5:1 to 1:1 and the methanol and CO2 is in a weight ratio is 2:1.
Dependencies are inferred from the claim text.