| Title |
Ethanol synthesis via catalytic CO2 hydrogenation over multi-elemental KFeCuZn/ZrO2 catalyst |
| ID_Doc |
7995 |
| Authors |
Du, PF; El Fakir, AA; Zhao, SR; Dostagir, NHMD; Pan, HL; Ting, KW; Mine, S; Qian, YC; Shimizu, K; Toyao, T |
| Title |
Ethanol synthesis via catalytic CO2 hydrogenation over multi-elemental KFeCuZn/ZrO2 catalyst |
| Year |
2024 |
| Published |
|
| Abstract |
Technological enablers that use CO2 as a feedstock to create value-added chemicals, including ethanol, have gained widespread appeal. They offer a potential solution to climate change and promote the development of a circular economy. However, the conversion of CO2 to ethanol poses significant challenges, not only because CO2 is a thermodynamically stable and chemically inert molecule but also because of the complexity of the reaction routes and uncontrollability of C-C coupling. In this study, we developed an efficient catalyst, K-Fe-Cu-Zn/ZrO2 (KFeCuZn/ZrO2), which enhances the EtOH space time yield (STYEtOH) to 5.4 mmol gcat-1 h-1, under optimized conditions (360 degrees C, 4 MPa, and 12 L gcat-1 h-1). Furthermore, we investigated the roles of each constituent element using in situ/operando spectroscopy such as X-ray absorption spectroscopy (XAS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). These results demonstrate that all components are necessary for efficient ethanol synthesis. |
| PDF |
https://doi.org/10.1039/d4sc02588a
|
