Greener and facile synthesis of Cu/ZnO catalysts for CO₂hydrogenation to methanol by urea hydrolysis of acetates

Abstract

Sodium- and nitrate-free hydroxy-carbonate precursors were prepared via urea hydrolysis co-precipitation of acetate salt, which is simpler with fewer steps, even without the need for a washing and pH control, rendering the synthesis more sustainable.

Recent Progress in Direct DME Synthesis and Potential of Bifunctional Catalysts

“…Accurate control of the synthesis conditions, in particular temperature, pH value, mixing and aging procedure is important 44. Many improvements have been achieved to prevent metal agglomeration and sintering during the calcination, which is crucial for the metal dispersion and the catalytic performance, such as nitrate‐free synthesis from a basic formate or acetate precursor, 47, 48 surfactant‐assisted coprecipitation, 49 reverse co‐precipitation, 50, 51 reverse co‐precipitation with ultrasound irradiation 52, 53 and continuous co‐precipitation 21.…”