METHOD FOR RECOVERING HYDROCHLORIC ACID AND COPPER CARBONATE FROM COPPER CHLORIDE SOLUTIONPROBLEM TO BE SOLVED: To provide a method for recovering valuable materials from a spent copper chloride etching solution that treats the surplus spent solution within the site and allows an effective utilization ...
a copper sulfate and a sulfuric acid after recovering the hydrochloric acid in the concentration process and a neutralization process which separate and recovers by precipitating a basic copper carbonate neutralizing by a carbonate of an alkali metal after dissolving a separated crystal into water, the...
Alternatively, it may be prepared by treating copper carbonate with hydrochloric acid followed by crystallization: CuCO3 + 2HCl → CuCl2 + CO2 + H2O In the above preparation, the hydrate of the salt crystallizes, precipitates, and may be dehydrated by heating under vacuum. 9.6 Reactions When heat...
(annealed); electrical resistivity 1.71 microhm-cm at 25°C; Poisson's ratio 0.33; melts at 1,083°C; vaporizes at 2,567°C; insoluble in water; dissolves in nitric acid and hot sulfuric acid; slightly soluble in hydrochloric acid; also soluble in ammonium hydroxide, ammonium carbonate and...
The cyanide baths also contain sodium carbonate, which is formed when cyanide molecules are oxidized by the oxygen in air. Some carbonate is required to form a dense coating layer, but an excessive amount, over 70–80 g l−1, must be removed from the bath by lowering the bath temperature...
(V). Ultimately, the resulting cyclocarbonate product is obtained, while the catalyst, GO-CuPc-IL, reverts to its initial state (VI). This catalytic mechanism illustrates that the cycloaddition of CO2is accomplished through the synergistic action of various functional groups. The GO-CuPc-IL ...
a copper sulfate and a sulfuric acid after recovering the hydrochloric acid in the concentration process and a neutralization process which separate and recovers by precipitating a basic copper carbonate neutralizing by a carbonate of an alkali metal after dissolving a separated crystal into water, the...
TP220 is obtained in a nitrogen atmosphere by the N-alkylation of poly(aminomethylstyrene) cross-linked with well-dried 2-chloroalkylpyridinein dioxane in the presence of triethylamine or anhydrous potassium carbonate, while M4195 is obtained by the reaction of bis[(2-pyridylmethyl)]amine with ...
Sodium carbonate was mixed properly with the powdered anode slime in a quartz crucible. The crucible was then kept in the furnace. Subsequently, the furnace was heated (between 350 to 550 °C) and roasting was carried out for a fixed duration followed by controlled cooling. 2.2.3. ...
Copper oxide nanoparticles (CuO-NP) are increasingly used in consumer-related products, which may result in increased oral ingestion. Digestion of particles can change their physicochemical properties and toxicity. Therefore, our aim was to simulate the