Hydrodechlorination of Dichloroacetic Acid DCA

Pd/HS-AlF3 and Pd/HS-MgF2 as well the respective Pt-containing catalysts have also been employed for hydrodechlorination of dichloroacetic acid (DCA) to monochlor-oacetic acid (MCA) according to Equation (3.16), whereby some acetic acid (AA) is also formed. 

This reaction is important because, upon chloroacetic acid synthesis via chlorination of acetic acid, some dichloroacetic acid is formed as byproduct. Results shown in 

With Pt-based catalysts the selectivity is much better than with Pd-based catalysts, however, the conversion is so low that the MCA yield is much lower than with the Pd catalysts. 

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