A Microporous Graphitized Biocarbon with High Adsorption Capacity toward Benzene Volatile Organic Compounds (VOCs) from Humid Air at Ultralow Pressures

作者：Zhu, Meiping; Tong, Zhangfa; Zhao, Zhongxing; Jiang, Yuzhao; Zhao, Zhenxia

来源：Industrial & Engineering Chemistry Research, 2016, 55(13): 3765-3774.

DOI：10.1021/acs.iecr.6b00056

• NITROGEN-DOPED GRAPHENE
• ACTIVATED CARBON
• FRAMEWORKS HKUST-1
• HYDROGEN STORAGE
• AQUEOUS-SOLUTION
• WATER-VAPOR
• DESORPTION
• MIL-101
• TOLUENE
• EQUILIBRIUM

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.

• 出版日期2016-4-6
• 单位广西大学