Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 41, Pages 35802-35810Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b09989
Keywords
Porous carbon; CO2 capture; gas separation; LAST; flue gas; landfill gas; nitrogen-doped carbon
Funding
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-SC0002576]
Ask authors/readers for more resources
Development of efficient sorbents for carbon dioxide (CO2) capture from flue gas or its removal from natural gas and landfill gas is very important for environmental protection. A new series of heteroatom-doped porous carbon was synthesized directly from pyrazole/KOH by thermolysis. The resulting pyrazole-derived carbons (PYDCs) are highly doped with nitrogen (14.9-15.5 wt %) as a result of the high nitrogen-to-carbon ratio in pyrazole (43 wt %) and also have a high oxygen content (16.4-18.4 wt %). PYDCs have a high surface area (SA(BET) = 1266-2013 m(2) g(-1)), high CO, Qt. (33.2-37.1 kJ mol(-1)), and a combination of mesoporous and microporous pores. PYDCs exhibit significantly high CO, uptakes that reach 2.15 and 6.06 mmol g(-1) at 0.15 and 1 bar, respectively, at 298 K. At 273 K, the CO, uptake improves to 3.7 and 8.59 mmol g(-1) at 0.15 and 1 bar, respectively. The reported porous carbons also show significantly high adsorption selectivity for CO2/N, (128) and CO2/CH4 (13.4) according to ideal adsorbed solution theory calculations at 298 K. Gas breakthrough studies of CO2/N-2 00:90) at 298 K showed that PYDCs display separation properties. The ability to tailor the physical properties of PYDCs as well as their chemical composition provides an effective strategy for designing efficient CO, sorbents.
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