Article Cite This: Ind. Eng. Chem. Res. XXXX, XXX, XXX−XXX
pubs.acs.org/IECR
Facile and Controllable Preparation of Ultramicroporous BiomassDerived Carbons and Application on Selective Adsorption of Gasmixtures Yan Zhang,†,‡ Peixin Zhang,†,‡ Weikang Yu,†,‡ Jun Wang,*,†,‡ Qiang Deng,†,‡ Jiangfeng Yang,§ Zheling Zeng,†,‡ Mai Xu,∥ and Shuguang Deng*,†,‡,§,∥
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Key Laboratory of Poyang Environment and Resource Utilization (Nanchang University), Ministry of Education, Nanchang 330031, Jiangxi, People’s Republic of China ‡ School of Resource, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, Jiangxi, People’s Republic of China § Research Institute of Special Chemicals, Taiyuan University of Science & Technology, Taiyuan 030024, Shanxi, People’s Republic of China ∥ School for Engineering of Matter, Transport and Energy, Arizona State University, 551 E. Tyler Mall, Tempe, Arizona 85287, United States S Supporting Information *
ABSTRACT: It is very challenging to prepare biomass-derived porous carbons with well-confined ultramicropores. Traditionally, biomass-derived carbons, via a chemical activation process, possess wide pore size distributions from micropores to macropores. Outstanding BET surface area of 2676 ± 107 m2 g−1 was obtained with excellent CO2 uptake of 6.15 and 2.26 mmol g−1 under 1 and 0.15 bar at 273 K. Furthermore, the outstanding CO2/N2, CO2/CH4, and CH4/N2 selectivities of 43.5, 7.4, and 5.9 were obtained on an OTS-1-550 at 298 K and 1 bar. The pore size effect on CO2 capture and gas-separation performance was carefully investigated, indicating that the ultramicropores (
