@article{917336145f3c451b883750d6abc23d49,
title = "Sub-nanometer ceria-promoted Ni 13X zeolite catalyst for CO2 methanation",
abstract = "Sub-nanometer zeolite 13X-supported Ni-ceria catalysts were synthesized for CO2 methanation. XRD and SEM results show the structure and morphology of 13X zeolite after impregnation and calcination. Ce loading affected the catalysts{\textquoteright} metal dispersion, reducibility, basicity and acidity, and thence their activity and selectivity. STEM-EDX elemental mappings showed that Ce and Ni are predominantly highly dispersed. Ce has a positive effect on the reduction of NiO and leads to a relatively high number of medium basic sites with a low Ce loading. Highly stable 5%Ni2.5%Ce13X had high activity and nearly 100% CH4 selectivity in CO2 methanation at 360 °C, which is mainly due to the high dispersion of metals and relatively high amount of medium basic sites. It can be inferred that this catalyst synthesis strategy has great potential for good catalyst dispersion, since metal uptake by the zeolite is selective for the metal citrate complexes in solution.",
keywords = "Cerium citrate, Citrate complexes, CO methanation, Nickel citrate, Sub-nanometer nickel-ceria on zeolite 13X",
author = "Liangyuan Wei and Henrik Gr{\'e}nman and Wim Haije and Narendra Kumar and Atte Aho and Kari Er{\"a}nen and Liangfu Wei and {de Jong}, Wiebren",
note = "Funding Information: The research work is a part of the activities of the Process and Energy Department in Delft University of Technology and the Johan Gadolin Process Chemistry Centre, a center of excellence financed by {\AA}bo Akademi University . The authors acknowledge financial support from {\AA}bo Akademi University, the Finnish Society of Science and Letters for Liangyuan Wei visiting the Laboratory of Industrial Chemistry and Reaction Engineering, {\AA}bo Akademi University, Turku, Finland . The authors also acknowledge the PhD scholarship awarded to Liangyuan Wei by the China Scholarship Council (CSC) . We thank Ruud Hendrikx and Wim Sloof at the Department of Materials Science and Engineering of the Delft University of Technology for the XRD and SEM analysis respectively. We thank Dr. Wiel H. Evers at the Department of Chemical Engineering of the Delft University of Technology for the TEM analysis. Funding Information: The research work is a part of the activities of the Process and Energy Department in Delft University of Technology and the Johan Gadolin Process Chemistry Centre, a center of excellence financed by ?bo Akademi University. The authors acknowledge financial support from ?bo Akademi University, the Finnish Society of Science and Letters for Liangyuan Wei visiting the Laboratory of Industrial Chemistry and Reaction Engineering, ?bo Akademi University, Turku, Finland. The authors also acknowledge the PhD scholarship awarded to Liangyuan Wei by the China Scholarship Council (CSC). We thank Ruud Hendrikx and Wim Sloof at the Department of Materials Science and Engineering of the Delft University of Technology for the XRD and SEM analysis respectively. We thank Dr. Wiel H. Evers at the Department of Chemical Engineering of the Delft University of Technology for the TEM analysis. Publisher Copyright: {\textcopyright} 2021 The Authors",
year = "2021",
month = feb,
day = "25",
doi = "10.1016/j.apcata.2021.118012",
language = "English",
volume = "612",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
}