Tuning the synthesis pH and composition of Cu hydrotalcites for hydrogenolysis of glycerol
ARTIGO
Inglês
Different hydrotalcites were synthesized by coprecipitation, replacing the Mg2+ ion by Cu, Cu–Co, and Cu–Zn via two methodologies: at a constant pH of 10 and at changing pH. The solids were characterized by X-ray diffraction (XRD), thermogravimetry (TG), X-ray fluorescence (XRF) and...
Different hydrotalcites were synthesized by coprecipitation, replacing the Mg2+ ion by Cu, Cu–Co, and Cu–Zn via two methodologies: at a constant pH of 10 and at changing pH. The solids were characterized by X-ray diffraction (XRD), thermogravimetry (TG), X-ray fluorescence (XRF) and temperature-programmed desorption (TPD). The activity of the solids as catalysts was evaluated by the hydrogenolysis of glycerol. The Co-containing catalysts had fewer acid sites, which possibly decreased the glycerol conversion. The Cu–Zn catalyst prepared at constant pH was the most active under the conditions tested, achieving 38.56% conversion and 61.57% selectivity towards 1,2-propanediol
Fechado
Tuning the synthesis pH and composition of Cu hydrotalcites for hydrogenolysis of glycerol
Tuning the synthesis pH and composition of Cu hydrotalcites for hydrogenolysis of glycerol
Fontes
Catalysis Communications Vol. 136 (Mar., 2020) |