Zn/Cu SORBENT SYNTHESIS FOR SYN-GAS PURIFICATION FROM HYDROGEN SULFIDE

The article is devoted to the synthesis of Zn/Cu sorbents and their study for the adsorption purification of synthesis gas from sulfur-containing compounds. The sorbents were synthesized using precipitation method, hydrothermal treatment, and mechanical grinding and microemulsion method. The article contains results of the physico-chemical studies of Zn/Cu sorbents with hydrogen chemisorption, nitrogen adsorption, X-ray photoelectron spectroscopy and electron microscopy. Studies showed that the most active sample, synthesized by microemulsion method, is characterized by highest surface area and highest concentration of surface active metal as compared with to other samples. The sample surface consists of 57-61 at. % Cu+2, Zn+2, Al+3 in form of oxides and 1.5-3.0 at. % Zn+2, Al+3 in form of aluminates. The sample synthesized by mechanical grinding of oxides showed the lowest activity in hydrogen sulfide sorption that explains by higher concentration of aluminates in the active face. The results of Zn/Cu sorption activity showed well correlation of hydrogen sulfide sorption capacity with sample surface area and surface concentration of active metal.Forcitation:Doluda V.Yu., Sulman M.G., Matveeva V.G., Lakina N.V., Sulman E.M. Zn/Cu sorbent synthesis for Syn-gas purification from hydrogen sulfide. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2017. V. 60. N 3. P. 61-66.