The role of acid/base properties in Ni/MgO-ZrO2–based catalysts for dry reforming of methane
| Autor: | Juliane Titus, Stephan Andreas Schunk, Michael Goepel, Roger Gläser, Nicole Wilde |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Base (chemistry) Carbon dioxide reforming 010405 organic chemistry Process Chemistry and Technology Inorganic chemistry General Chemistry 010402 general chemistry 01 natural sciences Catalysis Methane 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Calcination BET theory |
| Zdroj: | Catalysis Communications. 100:76-80 |
| ISSN: | 1566-7367 |
| DOI: | 10.1016/j.catcom.2017.06.027 |
| Popis: | MgO-ZrO2 as a support material for DRM catalysts was prepared with varying MgO-content (12–68 mol-%) relative to ZrO2. Characterizing the acid/base properties of MgO-ZrO2 materials with TPD-NH3 and TPD-CO2, the density of acid/base sites was found to significantly decrease with increasing calcination temperature (723 K or 1123 K). Nevertheless, in relation to the specific BET surface area, values are comparable for both calcination temperatures and both, acid/base sites. The impregnation of Ni only significantly influences the density of acid/basic sites if MgO-ZrO2 was treated at only 723 K. Regarding the Ni-species available, melt-impregnation seems more suitable for DRM catalysts than wet-impregnation. In terms of catalytic activity in the DRM, results from an earlier work have been revisited with regard to the influence of MgO-content and basic sites. |
| Databáze: | OpenAIRE |
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