ABSTRACT
The catalysts for oxy- or oxyhydrochlorinations are ordinarily supported copper chloride. Members of this family of catalysts are generally high-surface-area alumina impregnated with copper chloride. These are made following the general method of impregnation via the pill-coating scheme already described.
Charge to the corrosion-resistant or rubber-lined pill-coating machine (Fig. 37) a quantity of activated alumina in granular form, and then charge an aqueous solution of copper chloride sufficient to produce a 6–14% quantity of copper chloride on the basis of the quantity of alumina in the charge.
Rotate the pill-coating machine pan and the contents to ensure that the catalyst is uniformly coated, adding water if necessary or heating the jacket to drive off excess water.
After the “drying” operation at 175–250°C (Fig. 18), the catalyst is ready for use.
