[1B05-07] C1 chemistry 2

[1B05] Urea-derived Cu/ZnO catalyst being dried by supercritical phase CO₂ for low-temperature methanol synthesis <gdiv></gdiv>

○Peipei Zhang¹, Yoshiharu Yoneyama¹, Guohui Yang¹, Noritatsu Tsubaki¹ (1. Toyama University)

The high CO conversion and methanol yield are challenging in low-temperature methanol synthesis, thus improving catalyst activity is necessary. Cu/ZnO with a narrow size distribution were synthesized via homogeneous precipitation method using urea as the precipitant, being followed by supercritical CO₂ drying treatment (named as CZhp-S). Due to the large specific surface area and the enhanced amount of active sites, CZhp-S with optimized supercritical CO₂ drying condition demonstrated a maximum CO conversion of 52.7% and STY of methanol 87.6 g_MeOH/kg_catalyst^.h^-1 for low-temperature methanol synthesis, which were much higher than those of CZcp-H (CO conversion 36.5%, STY of methanol 62.9 g_MeOH/kg_catalyst^.h^-1).<gdiv></gdiv>