Abstract
Hydrotalcite-derived Ni-containing and Ni-La promoted catalysts showed very high activity in CO2 methanation, which is an efficient way of carbon dioxide conversion into methane – a valuable product. The catalysts were obtained by co-precipitation method followed by thermal decomposition and characterized by elemental analysis, low temperature nitrogen sorption, XRD, H2-TPR, CO2-TPD and TEM. The obtained results confirmed the formation of periclase-like structure materials, with nickel present as NiO nanoparticles and suggested successful incorporation of lanthanum into the catalytic system. The addition of lanthanum changed the interaction between nickel and periclase matrix (H2-TPR) and changed the distribution of basic sites, especially medium strength ones (CO2-TPD). Moreover, the catalysts were studied by complementary HERFD-XANES and XES spectroscopy under model operando conditions. The results uncovered that the presence of lanthanum strongly influenced the chemical nature and oxidation state of nickel species and its crucial role in catalyst activity enhancement in CO2 methanation reaction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
