326. ------. [CARPENTER, G. B.] (E. I. du Pont de Nemours & Co.). Formic Acid. United States Patent 1,949,825. Mar. 6, 1934. Chem. Abs., vol. 28, 1934, p. 3082.

Patent Abstracts

Gaseous mixture of CO and steam is passed over a catalyst, such as a silicotungstic, silicomolybdic, or phosphomolybdic acid catalyst, suitably at a temperature of about 325º.