METHOD FOR HYDROGENATION OF ACETONE TO ISOPROPANOL Russian patent published in 2005 - IPC

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for synthesis of isopropanol of high purity by hydrogenation reaction of acetone. Hydrogenation of acetone is carried out in liquid phase for at least two stages at temperature from 60^oC to 140^oC and under pressure from 20 to 50 bars. In hydrogenation nickel-containing catalyst on neutral carrier, preferably on a carrier made of α-form of aluminum oxide is used. The molar ratio hydrogen : acetone = (1.5-1):1. Reactor of the first stage can be circulation reaction, and at the second stage - tube reactor. For hydrogenation reaction acetone containing 1.0 wt.-% of water, not less, is used. Invention provides carrying out the process with high selectivity to yield isopropanol containing impurities in the concentration less 300 mole fr., preferably, less 100 mole fr.

EFFECT: improved hydrogenation method.

6 cl, 2 dwg, 1 ex