Abstract
AbstractThe storage capacity of carbon dioxide (CO2) on the wet SBA‐15 material can be greatly improved by forming gas hydrates. The presence of generous polar groups (hydroxyl groups) on the surface of SBA‐15 hinders the formation of CO2 hydrates. In order to further improve its CO2 adsorption capacity, the polar surfaces of SBA‐15 material are changed into non‐polar carbon surfaces by covering with carbon film, and Si−C composite is obtained. Compared with the SBA‐15 material, the pore size and pore volume of the Si−C composite material reduces but its morphology and structure are unchanged. Whether pre‐adsorbed water or not, the experiment results showed that the Si−C composite material is more conducive to the adsorption of CO2 than the SBA‐15 material. In a comparison of the Si−C composite material and the SBA‐15 material at 2.5 MPa, the CO2 adsorption capacity increased from 3.8 mmol/g to 8.5 mmol/g with dry samples, and the CO2 adsorption capacity increased from 20.1 mmol/g to 26.9 mmol/g with wet samples at Rw=2.0.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.