Publication Type Journal Article
Title Methanation of CO2 Over Bimetallic Ni-5f Block Element (Th, U) Oxides
Authors Joaquim B. Branco Ana C. Ferreira
Groups IOARC
Journal EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Year 2019
Month February
Volume
Number 7
Pages 1039-1045
Abstract THe methanation of carbon dioxide was studied over bimetallic nickel-5f block element oxides, 2NiO center dot ThO2 and 2NiO center dot UO3. The catalysts were prepared by two approaches: controlled oxidation under dry air using intermetallic binary compounds (AnNi(2); An=Th, U) as precursors and by a modified sol-gel method. The best results were those obtained using the thorium-based catalysts that present activities and selectivities higher than those measured over two reference catalysts. To the best of our knowledge, this is one of the few times that bimetallic nickel-5f block element oxides were tested for the methanation of carbon dioxide and their behaviour was a complete, or not, surprise. The catalysts present also unusual and long stability in the gaseous stream and with activities 10-30 times superior to that measured over a commercial 5wt.-\%Rh catalyst supported on alumina, they clearly merit an opportunity and further studies.
DOI http://dx.doi.org/10.1002/ejic.201801490
ISBN
Publisher
Book Title
ISSN 1434-1948
EISSN 1099-0682
Conference Name
Bibtex ID ISI:000459316800014
Observations
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