Adsorbed natural gas storage with activated carbons made from Illinois coals and scrap tires
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Abstract
Activated carbons for natural gas storage were produced from Illinois bituminous coals (IBC-102 and IBC-106) and scrap tires by physical activation with steam or CO2 and by chemical activation with KOH, H3PO4, or ZnCl2. The products were characterized for N2-BET area, micropore volume, bulk density, pore size distribution, and volumetric methane storage capacity (Vm/Vs). Vm/Vs values for Illinois coal-derived carbons ranged from 54 to 83 cm3/cm3, which are 35−55% of a target value of 150 cm3/cm3. Both granular and pelletized carbons made with preoxidized Illinois coal gave higher micropore volumes and larger Vm/Vs values than those made without preoxidation. This confirmed that preoxidation is a desirable step in the production of carbons from caking materials. Pelletization of preoxidized IBC-106 coal, followed by steam activation, resulted in the highest Vm/Vs value. With roughly the same micropore volume, pelletization alone increased Vm/Vs of coal carbon by 10%. Tire-derived carbons had Vm/Vs values ranging from 44 to 53 cm3/cm3, lower than those of coal carbons due to their lower bulk densities. Pelletization of the tire carbons increased bulk density up to 160%. However, this increase was offset by a decrease in micropore volume of the pelletized materials, presumably due to the pellet binder. As a result, Vm/Vs values were about the same for granular and pelletized tire carbons. Compared with coal carbons, tire carbons had a higher percentage of mesopores and macropores.
Suggested Citation
Sun, J., Brady, T., Rood, M., Lehmann, C., Rostam-Abadi, M., and Lizzio, A., 1997, Adsorbed natural gas storage with activated carbons made from Illinois coals and scrap tires: Energy and Fuels, v. 11, no. 2, p. 316-322, https://doi.org/10.1021/ef960201h.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Adsorbed natural gas storage with activated carbons made from Illinois coals and scrap tires |
| Series title | Energy and Fuels |
| DOI | 10.1021/ef960201h |
| Volume | 11 |
| Issue | 2 |
| Publication Date | March 19, 1997 |
| Year Published | 1997 |
| Language | English |
| Publisher | American Chemical Society |
| Description | 7 p. |
| First page | 316 |
| Last page | 322 |