relation: https://khub.utp.edu.my/scholars/18742/ title: The Activity and Stability of Promoted Cu/ZnO/Al2O3 Catalyst for CO2 Hydrogenation to Methanol creator: Berahim, N.H. creator: Zabidi, N.A.M. creator: Ramli, R.M. creator: Suhaimi, N.A. description: 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 N2 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 °C, 31.25 bar, 2160 mL/g.hr GHSV, and H2: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. © 2023 by the authors. date: 2023 type: Article type: PeerReviewed identifier: Berahim, N.H. and Zabidi, N.A.M. and Ramli, R.M. and Suhaimi, N.A. (2023) The Activity and Stability of Promoted Cu/ZnO/Al2O3 Catalyst for CO2 Hydrogenation to Methanol. Processes, 11 (3). relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85151445810&doi=10.3390%2fpr11030719&partnerID=40&md5=f3e5a40493695f992b6a71a6797173fc relation: 10.3390/pr11030719 identifier: 10.3390/pr11030719