Journal
NANOSCALE
Volume 14, Issue 35, Pages 12620-12637Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nr02688k
Keywords
-
Categories
Funding
- Doctoral College of the University of Surrey
- European Commission [101008058]
- EPSRC [EP/V036327/1]
- Department of Chemical and Process Engineering of the University of Surrey
- Marie Curie Actions (MSCA) [101008058] Funding Source: Marie Curie Actions (MSCA)
Ask authors/readers for more resources
The feasibility of a Dual Function Material (DFM) with a versatile catalyst that can switch between chemical synthesis and CO2 capture from air was demonstrated. These DFMs open up possibilities for flexible chemical production and offer potential for capturing CO2 from dilute sources.
The feasibility of a Dual Function Material (DFM) with a versatile catalyst offering switchable chemical synthesis from carbon dioxide (CO2) was demonstrated for the first time, showing evidence of the ability of these DFMs to passively capture CO2 directly from the air as well. These DFMs open up possibilities in flexible chemical production from dilute sources of CO2, through a combination of CO2 adsorption and subsequent chemical transformation (methanation, reverse water gas shift or dry reforming of methane). Combinations of Ni Ru bimetallic catalyst with Na2O, K2O or CaO adsorbent were supported on CeO2-Al2O3 to develop flexible DFMs. The designed multicomponent materials were shown to reversibly adsorb CO2 between the 350 and 650 degrees C temperature range and were easily regenerated by an inert gas purge stream. The components of the flexible DFMs showed a high degree of interaction with each other, which evidently enhanced their CO2 capture performance ranging from 0.14 to 0.49 mol kg(-1). It was shown that captured CO2 could be converted into useful products through either CO2 methanation, reverse water-gas shift (RWGS) or dry reforming of methane (DRM), which provides flexibility in terms of co-reactant (hydrogen vs. methane) and end product (synthetic natural gas, syngas or CO) by adjusting reaction conditions. The best DFM was the one containing CaO, producing 104 mu mol of CH4 per kg(DFM) in CO2 methanation, 58 mu mol of CO per kg(DFM) in RWGS and 338 mu mol of CO per kg(DFM) in DRM.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available