Discovering indium as hydrogen production booster for a Cu/SiO2 catalyst in steam reforming of methanol
| Autor: | Filippo Bossola, Luca Sementa, Alessandro Fortunelli, Vladimiro Dal Santo, Claudio Evangelisti, Mauro Coduri, Thantip Roongcharoen, Ferenc Somodi |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
chemistry.chemical_element Copper-indium 02 engineering and technology 010402 general chemistry 01 natural sciences Catalysis Steam reforming chemistry.chemical_compound X-ray photoelectron spectroscopy Oxidation state Phase (matter) Selectivity Methanol steam reforming General Environmental Science Hydrogen production Process Chemistry and Technology 021001 nanoscience & nanotechnology Copper-indium Hydrogen Methanol steam reforming 0104 chemical sciences chemistry Chemical engineering Selectivity Electronic properties Electronic properties Methanol 0210 nano-technology Indium Hydrogen |
| Zdroj: | Applied catalysis. B, Environmental 297 (2021): 1–13. doi:10.1016/j.apcatb.2021.120398 info:cnr-pdr/source/autori:Filippo Bossola (a), Thantip Roongcharoen (b), Mauro Coduri (c), Claudio Evangelisti (b), Ferenc Somodi (d), Luca Sementa (e), Alessandro Fortunelli (b), Vladimiro Dal Santo (a)./titolo:Discovering indium as hydrogen production booster for a Cu%2FSiO2 catalyst in steam reforming of methanol/doi:10.1016%2Fj.apcatb.2021.120398/rivista:Applied catalysis. B, Environmental (Print)/anno:2021/pagina_da:1/pagina_a:13/intervallo_pagine:1–13/volume:297 |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/j.apcatb.2021.120398 |
| Popis: | We report on the use of In as an effective H2 production promoter in a Cu/SiO2 catalyst for the steam reforming of methanol. To date, In promotion has been limited to noble metals because of its tendency to “bury” other metals thus compromising the catalytic activity. Here, we prepared a silica-supported Cu-In catalyst via a urea-assisted co-precipitation method that showed a higher H2 productivity compared to the monometallic catalyst and a remarkable H2/CO2 molar ratio of almost 3 at 220 °C. Through XPS, XRPD and HRTEM-EDX along with H2- and CO-TPR, H2O-TPD, and N2O titrations, supported by computational modeling, we attributed such superior performances to an easier H2O activation due to improved electronic properties of the Cu phase, that is, its lower oxidation state via electron density transfer from the InOx buffer phase as a 1D “necklace” structures crucially mediating the interaction of small Cu nanoparticles (2.6 nm) and silica. |
| Databáze: | OpenAIRE |
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