A thermodynamic investigation of adsorbate-adsorbate interactions of carbon dioxide on nanostructured carbons
- California Inst. of Technology (CalTech), Pasadena, CA (United States). Dept. of Applied Physics and Materials Science
A thermodynamic study of carbon dioxide adsorption on a zeolite-templated carbon (ZTC), a superactivated carbon (MSC-30), and an activated carbon (CNS-201) was carried out at temperatures from 241 to 478 K and pressures up to 5.5•106 Pa. Excess adsorption isotherms were fitted with generalized Langmuir-type equations, allowing the isosteric heats of adsorption and adsorbed-phase heat capacities to be obtained as a function of absolute adsorption. On MSC-30, a superactivated carbon, the isosteric heat of carbon dioxide adsorption increases with occupancy from 19 to 21 kJ•mol-1, before decreasing at high loading. This increase is attributed to attractive adsorbate–adsorbate intermolecular interactions as evidenced by the slope and magnitude of the increase in isosteric heat and the adsorbed-phase heat capacities. An analysis of carbon dioxide adsorption on ZTC indicates a high degree of binding-site homogeneity. A generalized Law of Corresponding States analysis indicates lower carbon dioxide adsorption than expected.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Grant/Contract Number:
- SC0001057
- OSTI ID:
- 1470611
- Journal Information:
- AIChE Journal, Journal Name: AIChE Journal Journal Issue: 3 Vol. 64; ISSN 0001-1541
- Publisher:
- American Institute of Chemical EngineersCopyright Statement
- Country of Publication:
- United States
- Language:
- English
High-Pressure Hydrogen Adsorption on a Porous Electron-Rich Covalent Organonitridic Framework
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journal | January 2019 |
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
catalysis (heterogeneous)
charge transport
energy storage (including batteries and capacitors)
hydrogen and fuel cells
materials and chemistry by design
mesostructured materials
phonons
solar (photovoltaic)
superconductivity
synthesis (novel materials)
thermoelectric
catalysis (heterogeneous)
charge transport
energy storage (including batteries and capacitors)
hydrogen and fuel cells
materials and chemistry by design
mesostructured materials
phonons
solar (photovoltaic)
superconductivity
synthesis (novel materials)
thermoelectric