Journal
PROCESSES
Volume 11, Issue 3, Pages -Publisher
MDPI
DOI: 10.3390/pr11030719
Keywords
Cu; ZnO; Al2O3 catalyst; methanol synthesis; stability; activity
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The catalytic activity and stability of Cu/ZnO/Al2O3 catalyst with the addition of tri-promoters (Mn/Nb/Zr) in methanol synthesis were investigated. Spent catalysts were characterized for their physicochemical properties using various techniques. The longevity study showed a slight reduction in catalytic activity and a decrease in CO2 conversion and methanol yield when the reaction duration was prolonged to 14 days, attributed to thermal degradation.
Cu/ZnO/Al2O3 catalyst with the addition of tri-promoters (Mn/Nb/Zr) was investigated with respect to their catalytic activity and stability in a prolonged reaction duration in methanol synthesis. Spent catalysts were characterized using N-2 adsorption-desorption, FESEM/EDX, TEM, N2O chemisorption, and XPS for their physicochemical properties. The catalyst longevity study was evaluated at two days, seven days, and 14 days at 300 degrees C, 31.25 bar, 2160 mL/g.hr GHSV, and H-2:CO2 at 10:1. The CO2 conversion and methanol yield decreased by about 5.7% and 7.7%, respectively, when the reaction duration was prolonged to 14 days. A slight reduction in catalytic activity under prolonged reaction duration was found due to thermal degradation.
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