Carbon Dioxide → 4-Hydroxybenzoic Acid

Participants

Reaction Steps

A pressure vessel was charged with 6.98 g of potassium phenolate, 7.54 g of potassium meta cresolate and 25 g of NeoSK 1400. With stirring at 1,000 r.p.m., reaction was carried out at a carbon dioxide pressure of 7 kg/cm2 (G) and at 300° C. for one hour. An analysis of the reaction mixture after conversion to acid form showed a para-hydroxybenzoic acid yield of 80.0% on the basis of potassium phenolate, with 3.6% salicylic acid forming as a by product.

Provenance & Evidence