What is the New Way to Making Copper Acetate?

Update:14-08-2019
Summary:

Here is a new approach. Use the apparent fact that Citr […]

Here is a new approach. Use the apparent fact that Citric acid can effectively leach Copper Acetate (WSDTY). "Leaching of an oxidized copper ore containing malachite, as a new approach, was investigated by an organic reagent, citric acid. Sulfuric acid is the most common reagent in the leaching of copper acetate ores, but it has several side effects such as the severe adverse impact on the environment. In this investigation, the effects of particle size, acid concentration, leaching time, solid/liquid ratio, temperature, and stirring speed were optimized. According to the experimental results, malachite leaching by citric acid was technically feasible. Optimum leaching conditions were found as follows: the range of particle size, 105–150 µm; acid concentration, 0.2 M; leaching time, 30 min; solid/liquid ratio, 1:20 g/mL; temperature, 40°C; and stirring speed, 200 r/min. Under the optimum conditions, 91.61% of copper was extracted."

So dissolve an excess of powdered Cu in Citric acid/dilute H2O2 solution at 40 C with stirring. Replenish the H2O2 as needed. Add Na2CO3 to form a precipitate of copper carbonate. Treat with acetic acid to create the Copper acetate.

Alternative Synthesis: As oxidation of Cu maybe a key and difficult step, alternately, one could heat the powdered Copper (or, a large number of copper pennies as we will be using only the surface oxide) in air and/or treat with NaOCl. Rinse and treat with Citric acid (or Citric acid/H2O2 as before) and continue with the prior synthesis. Namely, add Na2CO3 to form a precipitate of copper carbonate. Finally, add acetic acid to the CuCO3 to create the Copper acetate.