Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/8677
Title: A highly active and stable Ru catalyst for syngas production via glycerol dry reforming: Unraveling the interplay between support material and the active sites
Authors: Ozden, Mert
Say, Zafer
Kocak, Yusuf
Ercan, Kerem Emre
Jalal, Ahsan
Ozensoy, Emrah
Avci, Ahmet K.
Keywords: Glycerol
Carbon dioxide
Dry reforming
Synthesis gas
Ruthenium
Gas Shift Reaction
Carbon-Dioxide
Ruthenium Nanoparticles
Hydrogen-Production
Coke Resistance
Nickel-Catalyst
Adsorption
Zirconia
Metal
Methane
Issue Date: 2022
Publisher: Elsevier
Source: Ozden, M., Say, Z., Kocak, Y., Ercan, K. E., Jalal, A., Ozensoy, E., & Avci, A. K. (2022). A highly active and stable Ru catalyst for syngas production via glycerol dry reforming: Unraveling the interplay between support material and the active sites. Applied Catalysis A: General, 636, 118577.
Abstract: Glycerol dry reforming (GDR) was studied on Ru/La2O3, Ru/ZrO2, and Ru/La2O3-ZrO2 catalysts. Impacts of the support on morphological, electronic and surface chemical properties of the catalysts were comprehensively characterized by TEM, in-situ DRIFTS, XPS, ATR-IR and XRD. Initial (5 h) CO2 conversion at 750 C and CO2-to-glycerol ratio of 1-4 was ordered as Ru/La2O3 < Ru/ZrO2 < Ru/La2O3-ZrO2. During 72 h stability tests, Ru/ZrO2 deactivated by ~33% due to Ru sintering, structural deformation of the monoclinic zirconia support, and strong metal-support interaction. Under identical conditions, CO2 conversion on Ru/La2O3 decreased by 27% mainly due to dehydroxylation/carbonation of lanthana and severe coking. Lanthana-stabilized tetragonal zirconia phase of Ru/La2O3-ZrO(2 & nbsp;)led to finely dispersed small oxidic Ru clusters which deactivated by 15% after 72 h and demonstrated unusually high catalytic performance that was on par with the significantly more expensive Rh-based catalysts, which are known with their exceptional activity and stability in GDR.
URI: https://doi.org/10.1016/j.apcata.2022.118577
https://hdl.handle.net/20.500.11851/8677
ISSN: 0926-860X
1873-3875
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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