Synthesis of 2-hydroxyethyl dibutyldithiocarbamate and its adsorption mechanism on chalcopyrite

Add time:07/12/2019    Source:sciencedirect.com

In this paper, 2-hydroxyethyl dibutyldithiocarbamate (HEBTC) containing thione and hydroxy groups was synthesized and introduced as a new flotation surfactant for recovering chalcopyrite. HEBTC’s chemical reactivity and dispersion performances were studied via DFT calculations and surface tension measurements. Its adsorption properties on chalcopyrite were systematically investigated by micro-flotation, adsorption tests, FT-IR and XPS analysis. DFT calculation results showed that the active sites of HEBTC located at CS and OH groups and HEBTC owned higher chemical reactivity than 2-ethyl dibutyldithiocarbamate (EBTC). Moreover, HEBTC displayed better dispersibility and hydrophilicity than EBTC in water. The micro-flotation tests demonstrated that HEBTC exhibited superior collecting ability than EBTC. Kinetic and isotherm data of the adsorption experiments could be well elucidated with the Pseudo-second-order model and Langmuir isotherm, indicating the adsorption of HEBTC on chalcopyrite was monolayer chemisorption. Thermodynamic studies showed that the adsorption of HEBTC on chalcopyrite was a spontaneous endothermic process. FT-IR and XPS analysis further proved that HEBTC were chemisorbed on the surface of chalcopyrite by formation of CuO and CuS bonds.

We also recommend Trading Suppliers and Manufacturers of 1-(2-hydroxyethyl)-3-phenylurea (cas 3747-47-5). Pls Click Website Link as below: cas 3747-47-5 suppliers

Prev:Design, synthesis and biological evaluation of 5-(2-amino-1-hydroxyethyl)-8-hydroxyquinolin-2(1H)-one derivatives as potent β2-adrenoceptor agonists
Next:Synthesis and physicochemical properties of pH-sensitive hydrogel based on carboxymethyl chitosan/2-hydroxyethyl acrylate for transdermal delivery of nobiletin)