Webinar: Investigation of Competitive CO2/H2O Adsorption on Nickel Nanoparticles Catalysts for the CO2 Hydration Reaction
Date: Thursday, 11 June 2020
Time: 15:00 BST | 16:00 CEST | 10:00 EDT
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Duration: 25 mins plus Q&A
The rise of carbon dioxide (CO2) in atmosphere is a major factor responsible for increasing global surface temperature. A possible solution to mitigate climate change is CO2 capture, storage and utilization (CCSU), which could be useful for controlling and moderating anthropogenic emissions of greenhouse gases. Several technologies have been considered to remove CO2 from flue gas streams including absorption, adsorption, membrane separations and cryogenic distillations. Another promising CCSU technology is removing CO2 by using the CO2 hydration reaction (CHR) which works well in the presence of catalyst such as carbonic anhydrase (CA). Other promising catalysts are nickel nanoparticles (NiNPs) developed by Šiller1-4 which have catalytic activity to accelerate the CHR. They are also stable in water based environments. Their catalytic activity is affected by surface area, surface structure of different dimensionalities of nanomaterials.
In this work, we study immobilized nickel nanowires (NiNWs) as 1D nanomaterials in SiO2 aerogels as a heterogeneous catalyst for the CHR and compared them with NiNPs as 0D nanomaterials. Data for the differences in catalytic activities for the CHR in a vapor phase when two different forms of nickel nanomaterials (NiNPs and NiNWs) are immobilized in silica aerogels will be presented. CO2/H2O coadsorption measurements providing insights into the nature of the complex catalytic activities were recorded using Vacuum Dynamic Vapor Sorption Analyzer (DVS Vacuum).