Adsorptive removal of nitrogen-containing compounds from fuel by metal-organic frameworks

被引：38
作者：
Wang, Zhaoyang [1 ]
Sun, Zhiguo [1 ]
Kong, Linghao [1 ]
Li, Gang [1 ]
机构：
[1] Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Liaoning, Peoples R China
来源：
JOURNAL OF ENERGY CHEMISTRY | 2013年 / 22卷 / 06期
关键词：
metal-organic framework; nitrogen-containing compound; adsorptive denitrogenation; denitrogenation kinetics; denitrogenation thermodynamics; LIQUID-PHASE ADSORPTION; TRANSPORTATION FUELS; SELECTIVE ADSORPTION; GAS OIL; DENITROGENATION; DESULFURIZATION; BENZENEDICARBOXYLATE; DEACTIVATION; ZEOLITES; CATALYST;
D O I：
10.1016/S2095-4956(14)60266-7
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The adsorptive denitrogenation from fuels over three metal-organic frameworks (MIL-96(Al), MIL-53(Al) and MIL-101(Cr)) was studied by batch adsorption experiments. Four nitrogen-containing compounds (NCCs) pyridine, pyrrole, quinoline and indole were used as model NCCs in fuels to study the adsorption mechanism. The physicochemical properties of the adsorbents were characterized by XRD, N-2 physical adsorption, FT-IR spectrum and Hammett indicator method. The metal-organic frameworks (MOFs), especially the MIL-101(Cr) containing Lewis acid sites as well as high specific surface area, can adsorb large quantities of NCCs from fuels. In addition, the adsorptive capacity over MIL-101(Cr) will be different for NCCs with different basicity. The stronger basicity of the NCC is, the more it can be absorbed over MIL-101(Cr). Furthermore, pore size and shape also affect the adsorption capacity for a given adsorbate, which can be proved by the adsorption over MIL-53(Al) and MIL-96(Al). The pseudo-second-order kinetic model and Langmuir equation can be used to describe kinetics and thermodynamics of the adsorption process, respectively. Finally, the regeneration of the used adsorbent has been conducted successfully by just washing it with ethanol.
引用
收藏
页码：869 / 875
页数：7
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