METHOD OF PRODUCING ACRYLIC ACID Russian patent published in 2018 - IPC C07C57/04 C07C51/215 C07C27/14 B01J27/57 B01J27/132 B01J23/20 

FIELD: chemistry; electrical engineering.

SUBSTANCE: invention relates to a one-step process for gas-phase oxidation of propane to form acrylic acid in the presence of a mixed metal oxide catalyst in excess of air oxygen relative to propane. Invention also relates to electrical engineering and can be used to electrically conduct current catalysts for gas-phase oxidation of propane and other catalytic processes with their use. Proposed method for producing acrylic acid in a flow reactor at atmospheric pressure and elevated temperature in the presence of a mixed metal oxide catalyst using a mixture of propane, air and water vapor as a gas feedstock, where a layer of a granular conductive composition catalyst Mo_1.0V_0.37Te_0.17Nb_0.12O₃ with a particle size of 0.4–0.8 mm is heated with a preheated gas feedstock with a volume ratio of propane to air of 1:10 and a partial pressure of water in a mixture of 170 Torr, while an alternating electric current is applied to the catalyst layer with a frequency in the range of 50–700 Hz, and the process is carried out at a temperature of 350–380 °C and a gas feedstock flow rate of 60 cm³/min. Method comprises using a quartz tubular flow reactor which has two adjacent zones-the preheating zone of the feedstock, the quartz head covered with a quartz nozzle and heated by an electric furnace, and a sequentially located reaction zone along which the current flow is fed to the catalytic layer.

EFFECT: invention can be used to electrically conduct current catalysts for gas-phase oxidation of propane and other catalytic processes with their use.

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