Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 1, Pages 101-108Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am404952z
Keywords
carbon dioxide adsorption; metal-organic frameworks; composites; adsorption/desorption cycles; selectivity of adsorption; isosteric heat of adsorption
Funding
- ARO [W911NF-10-1-0039]
- NSF [CBET 1133112]
- CSC (China Scholarship Council)
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1133112] Funding Source: National Science Foundation
Ask authors/readers for more resources
CO2 adsorption isotherms on Cu-BTC/aminated graphite oxide composites were measured in the pressure range up to 1.5 MPa at three different temperatures close to ambient. Adsorption capacity, isosteric heat of adsorption, and regenerability were investigated. They are considered as significant factors determining the practical application of materials for CO2 capture. The results indicate a significant improvement in the performance of the composites as CO2 adsorbents in comparison with the parent Cu-BTC MOF. Among all samples analyzed, the composite of Cu-BTC and modified graphite oxide with the highest N content (MOF/GO-U3) is the best performing sample. On its surface 13.41 mmol/g CO2 was adsorbed at room temperature and 1.5 MPa. A high selectivity for CO2 adsorption over that of CH4 was found. The selectivities for CO2 adsorption over N-2 are governed by the properties of the MOF phase. A relatively low heat of CO2 adsorption and the high degree of surface homogeneity cause that the composites can be fully regenerated and used in multicycle adsorption with the minimum energy demand.
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