Fourteen experiments were performed to investigate the impact of synthesis temperature on the crystallinity, physisorption, and morphology of HKUST-1. The scCO2 injection temperature was systematically varied between 50°C and 350°C. The flow rates of the precursors were kept the same the residence times were calculated based on the volume of the reactor and the supercritical CO2 density (res = ~650 ms), see SI Table . The reactor pressure was maintained at a constant P = 10 MPa.