Adsorption desulfurization performances of Zn/Co porous carbons derived from bimetal-organic frameworks

被引：103

作者：

Huo, Quan ^{[1
]}

Li, Jianshu ^{[1
]}

Liu, Gongquan ^{[1
]}

Qi, Xiaoran ^{[1
]}

Zhang, Xubiao ^{[1
]}

Ning, Yao ^{[1
]}

Zhang, Boyu ^{[1
]}

Fu, Yanfei ^{[1
]}

Liu, Suyan ^{[1
]}

机构：

[1] Yanshan Univ, Coll Environm & Chem Engn, Hebei Key Lab Appl Chem, Qinhuangdao 066004, Hebei, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2019年 / 362卷

基金：

中国国家自然科学基金;

关键词：

Zn-Co; MOFs; Carbonization; Porous carbon; Adsorption desulfurization; ZEOLITIC IMIDAZOLATE FRAMEWORK; MODEL FUEL; ACTIVATED CARBONS; AQUEOUS-SOLUTION; REMOVAL; DIBENZOTHIOPHENE; CATALYSTS; ADSORBENTS; OXYGEN; BENZOTHIOPHENE;

D O I：

10.1016/j.cej.2019.01.050

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Bimetal porous carbon Zn/Co@C materials derived from bimetal (Zn, Co)-organic frameworks (bi-MOFs) were prepared by a carbonization method in this work. These carbon materials were analyzed by some characterization technologies including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), N-2 adsorption-desorption, X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR), Raman spectra, Zeta potential and Boehm titration. The results demonstrated that an optimal carbonization temperature was 800 degrees C. The material prepared under such condition (denoted as Zn/Co@C-800) had good porous structures, uniformly distributed metal active sites, high surface area (531.1 m(2) g(-1)) and large pore volume (0.449 cm(3) g(-1)). In addition, adsorption desulfurization performances of samples for dibenzothiophene (DBT) were systematically investigated and followed an order: Zn/Co@C-800 > Zn@C-800 > Zn/Co@C-600 > Zn/Co@C-700 > Zn/Co@C-900 > Co@C-800. Pseudo second-order kinetic and Langmuir models presented best fitting results of DBT adsorbing on Zn/Co@C-800. The Zn/Co@C-800 exhibited the remarkable adsorption capacity of DBT (40.6 mg g(-1)) due to positive bimetallic synergistic effects.

引用

页码：287 / 297

页数：11

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