Unravelling the synergistic promotion effect of simultaneous doping Fe and Cr into Cu-based spinel oxide on methanol steam reforming |
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| Affiliation: | 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, PR China;2. University of Chinese Academy of Sciences, Beijing, 100049, PR China;1. Indo-Korea Science and Technology Center (IKST), Jakkur, Bengaluru 560065, India;2. Electronic Materials Research Center, KIST, Seoul 136-791, South Korea;3. Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul 02792, Seoul, Republic of Korea;1. Institute of Refrigeration and Cryogenic Engineering, Xi''an Jiaotong University, Xi''an 710049, China;2. China Special Equipment Inspection and Research Institute, Beijing, 100029, China;3. College of Petroleum and Chemical, Lanzhou University of Technology, Lanzhou, 730050, China;1. Department of Metallurgical and Materials Engineering, Nevsehir Haci Bektas Veli University, Nevsehir, 50300, Turkey;2. Department of Metallurgical and Materials Engineering, Eskisehir Osmangazi University, Eskisehir, 26040, Turkey |
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| Abstract: | The effects of Fe and Cr species on Cu-based supported and spinel oxide catalysts during methanol steam reforming (MSR) reaction and the Cu–Fe–Cr synergy were investigated. Herein, a series of Al2O3 supported catalysts were prepared. And their MSR performance was evaluated. The addition of Fe and Cr had a significant promotion on MSR performance compared with the corresponding Cu-based catalyst. In order to unravel the beneficial effect, CuFe, CuCr, CuAl, CuFeAl, CuCrAl and CuFeCr catalysts were synthesized by the hydrothermal method. And BET, XRD, SEM-EDX mapping, HRTEM, H2-TPR, NH3-TPD, CH3OH-TPD and XPS characterizations were performed. Results showed that CuFeCr catalyst possessed superior MSR behaviors. At the temperature of 260–270 °C, its methanol conversion was maintained above 80% during a time-on-stream stability of 100 h. And it exhibited better fast start-up behaviors than commercial catalyst. In combination with the characterizations, it was assumed that the excellent catalytic performance of the CuFeCr catalyst was attributed to its moderate Cu+ content and Ovac/Oads ratio. And it was the result of the Cu–Fe–Cr synergistic effect. |
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| Keywords: | Hydrogen production Methanol steam reforming Spinel Synergistic effect |
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