Process for purifying and recovering catalyst solution contaminated during the carbonylation of methyl acetate and/or dimethylether
Alcohols production by hydrogenation of carboxylic acids
Process for converting formate esters to carboxylic acids
Catalyzed hydrogenation of carboxylic acids and their anhydrides to alcohols and/or esters
Heterocyclic polymethine dyes with carbamate or amide groups Patent #: 5221751
ApplicationNo. 458692 filed on 06/02/1995
US Classes:562/519, Of alcohol or alcoholate562/522, Group VIII metal containing catalyst utilized562/607Acetic acid per se or salt thereof
ExaminersPrimary: Prescott, Arthur C.
Attorney, Agent or Firm
Foreign Patent References
International ClassesC07C 053/08
Foreign Application Priority Data1995-02-21 GB
AbstractA process for the production of a carboxylic acid by carbonylation of an alkyl alcohol or its reactive derivative comprises contacting the reactant with carbon monoxide in a liquid reaction composition comprising: (a) an iridium catalyst or rhodium catalyst, (b) alkyl halide, (c) at least a finite concentration of water and (d) rhenium as promoter.