Pt nanoparticles embedded in CeO2 and CeZrO2 catalysts for biogas upgrading: Investigation on carbon removal mechanism by oxygen isotopic exchange and DRIFTS
نویسندگان
چکیده
This work investigated the effect of Pt nanoparticles embedded into CeO2 ([email protected]2) and CeZrO2 on carbon removal mechanism for dry reforming methane, in comparison to impregnated Pt/CeO2. Morphological structural characterization by TEM Raman spectroscopy showed that sintering is suppressed both structures doping with Zr led solid solution formation. A combination TPR, oxygen isotopic exchange DRIFTS measurements demonstrated interact more strongly ceria than supported Pt, as a consequence, reactive lattice becomes abundant catalyst surface, promoting gasification over nanoparticle. The low availability species Pt/CeO2 resulted higher formation, TPO analysis. Therefore, [email protected]2 catalysts were resistant coke formation due presence at metal-support interface, balance between rates
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ژورنال
عنوان ژورنال: Journal of CO2 utilization
سال: 2021
ISSN: ['2212-9820', '2212-9839']
DOI: https://doi.org/10.1016/j.jcou.2021.101572