System / inorganic iodide Rhodium Catalyst for Methanol carbonylation process with improved impurity Profile.

摘要

The Method provides an improvement on the methods of carbonylation of methanol in the prior art, which substantially reduces the production deimpurezas carbonyl.The production of carbonyl impurities, in particular, acetaldehyde, CROTONALDEHYDE and 2-ethyl CROTONALDEHYDE, in decarbonilacion reactions of methanol has been shown to decrease.Maintaining a hydrogen partial pressure of between about 0.1 and 4 psia (0.68 and 27.5 kPa abs.Unapresion) to total reaction from about 15 to about 40 Atmospheres (1.5 to 4.05 MPa) of total reaction pressure.