Methane Steam Reforming on the Pt/CeO2 Catalyst: Effect of Daily Start-Up and Shut-Down on Long-Term Stability of the Catalyst
| Autor: | Carmen W. Moncada Quintero, Stefania Specchia, Cristina Italiano, Giuliana Ercolino, Antonio Vita, Um-E-Salma Amjad |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Chemical Engineering auxiliary power unit chemistry.chemical_element 02 engineering and technology Industrial and Manufacturing Engineering Catalysis Steam reforming 020401 chemical engineering platinum 0204 chemical engineering Pt/CeO2 Catalyst steam reforming ceria long-term stability General Chemistry 021001 nanoscience & nanotechnology Start up Methane Steam Reforming Environmentally friendly Chemical engineering chemistry Auxiliary power unit 0210 nano-technology Selectivity Platinum Shut down |
| Zdroj: | Industrial & engineering chemistry research 58 (2019): 16395–16406. doi:10.1021/acs.iecr.9b02436 info:cnr-pdr/source/autori:Amjad U.-E.-S.; Quintero C.W.M.; Ercolino G.; Italiano C.; Vita A.; Specchia S./titolo:Methane Steam Reforming on the Pt%2FCeO2 Catalyst: Effect of Daily Start-Up and Shut-Down on Long-Term Stability of the Catalyst/doi:10.1021%2Facs.iecr.9b02436/rivista:Industrial & engineering chemistry research/anno:2019/pagina_da:16395/pagina_a:16406/intervallo_pagine:16395–16406/volume:58 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.9b02436 |
| Popis: | An environmentally friendly auxiliary power unit requires catalysts operating in the cyclic mode, producing H at a steady rate with high CO selectivity and minimum CO clean-up. Here, 1% Pt/CeO catalyst was synthesized using the solution combustion synthesis method and investigated toward methane steam reforming reaction. Preliminary tests were performed by varying the steam-to-carbon ratio (S/C), gas hourly space velocity (GHSV), and time-on-stream (TOS). The catalyst showed near-equilibrium CH conversion and high H concentration (75% dry basis, N-free) obtained at S/C = 2.8 and GHSV = 24 000 h. The catalytic activity was stable after 25 cycles of start-up and shut-down operations, equivalent to 150 h of TOS. X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy techniques were used to characterize either the fresh and aged catalyst after 150 h of TOS. |
| Databáze: | OpenAIRE |
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