Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 55, Issue 13, Pages 3765-3774Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.6b00056
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Funding
- National Natural Science Foundation of China [21466003, 21376090]
- Scientific Research Foundation of Guang Xi University [XGZ130963]
- Natural Science Foundation of Hainan Province [20164168]
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Adsorption studies of vaporous benzene and toluene on a novel microporous graphitized biocarbon material (MGBC) were investigated in this study. The MGBC has high surface area (>2080 m(2)/g) and uniform microporosity (6.8-8.8 angstrom). The adsorbed amounts of benzene and toluene on the MGBC are similar to 3-5 times higher than those on zeolites and some metal organic framework (MOF) adsorbents (i.e., MIL-101, HKUST-1, and U10-66) at 80 Pa. Results of the desorption activation energy and isosteric heat indicate a strong affinity of the MGBCs for benzene/toluene molecules, because of its uniform micropores size and graphitic N/C in MGBC structure. Moreover, the MGBC possesses a hydrophobic character, and thus leads to a preferential adsorption for toluene over H2O. Therefore, the MGBC shows a much higher working capacity for toluene than MIL-101(Cr) and commercial activated carbons (ACs) in moderate humidity.
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