Abstract
Dry reforming of methane (DRM) is one of the most important processes allowing transformation of two most potent greenhouse gases into a synthesis gas. The CH4 and CO2 are converted at high temperatures in the presence of a metal catalyst (usually Ni, also promoted with noble metals, supported over various oxides). The DRM process is not widely used in the gas processing industry because of prompt deactivation of the catalyst owing to carbon deposition and the blockage of the metal active sites. This problem can be hindered by proper design of the catalyst in terms, e.g., of its composition and by providing strong interaction between active metal and catalytic support. The properties of the latter are also crucial for the catalyst’s performance in DRM and the occurrence of parallel reactions such as reverse water gas shift, CO2 deoxidation or carbon formation. In this paper we show for the first time the DRM performance of the ceria-zirconia and metal (Ni and/or Pt) supported on carbon fibres. The obtained Ni and Ni-Pt containing catalysts showed relatively high activity in the studied reaction and high resistance towards carbon deposition.
Highlights
Climate change caused by increasing emissions of greenhouse gases (GHGs), such as carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), is one of the biggest challenges of our times
Four dry reforming of methane (DRM) catalysts containing oxidised carbon fibres (CFF) and supported on it CeZrO2 with Ni, Pt or Pt + Ni were obtained
The catalysts were subjected to DRM tests that indicated that their activity decreased in the following order: Ni-CZ/CFF > Pt-Ni-CZ/CFF > Pt-CZ/CFF >> CZ/CFF, whereas the morphologies of those catalysts and the contact between deposited phases were the most important factors
Summary
Climate change caused by increasing emissions of greenhouse gases (GHGs), such as carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), is one of the biggest challenges of our times. The emissions of the two former, i.e., CO2 and CH4, cause more than half of the total greenhouse effect [1] and have the greatest impact on the increase in the average global air temperature [2] Those emissions are constantly growing (for CO2, from 22.15 Gt in 1990 to 36.14 Gt in 2014, while for CH4 (as CO2 equivalent), from 6.67 to 8.01 Gt [3]). The DRM is an extremely endothermic reaction; it requires higher operating temperatures (700–1000 ◦C) than other reactions of methane conversion to syngas, such as steam reforming (SRM) [6] or partial oxidation (POM) [7]
Sign-in/Register to view highlights & summary 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.
