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High-Performance Ni/Al2O3-(Zr + Ce)O2 catalysts for syngas production via ethanol dry reformingстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Fionov Yuri, Khlusova Ksenia, Chuklina Sofia, Mushtakov Anton, Fionov Alexander, Zhukov Dmitriy, Averin Alexey, Zhukova Anna
- Журнал: Fuel
- Том: 376
- Год издания: 2024
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Номер статьи: 132685
- DOI: 10.1016/j.fuel.2024.132685
- Аннотация: Series of Ni/xAl2O3-(100-x)(0.88Zr + 0.12Ce)O2 (denoted as Ni/xACZ) were prepared to elucidate the effect of Al/Zr ratio on Ni-support interaction and activity/stability in ethanol dry reforming (EDR). The change in the catalysts’ physicochemical properties before and after EDR reaction was determined using various character- ization techniques including X-ray diffraction, UV–Vis spectroscopy, transmission electron microscopy, H2- temperature programmed reduction, CO2-temperature programmed desorption, ferromagnetic resonance, ther- mogravimetric analysis and Raman spectroscopy. Increasing the Al/Zr ratio (from 5 mol.% to 75 mol.% alumina content) resulted in Ni nanoparticles’ size decreasing as well as the increasing metal-support interaction (MSI). The structural properties of the Al-rich (x = 50, 75 mol.%) oxide supports provided the highest activity and stability in EDR. In contrast, the Zr-rich samples (x = 5, 20 mol. %) showed lower EDR activity and stability due to the large nickel particle size and the deactivation of Ni0 nanoparticles with graphitized carbon. The Ni/50ACZ catalyst achieved stable and balanced H2 and CO yields (~77% each, with a CO/H2 ratio close to 1) and exceptional C2H5OH/CO2 conversions of 100/63% at 650 ◦C, owing to nanosized Ni0, optimal MSI, and high thermal stability.
- Добавил в систему: Фионов Александр Викторович
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