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Preparation of Hβ/OMC and Adsorption Desulfurization
Qi Yuhuan,Li Jian,Liu Yingying,Yang Lina,Yao Li,Shi Zhewen
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641
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The composite material Hβ/OMC containing the mesoporous carbon (OMC) and Hβ zeolite was synthesized. This composite was characterized with XRD, BET, FITR, SEM and TEM. The adsorption desulfurization performance of Hβ/OMC was investigated with benzothiophene (BT) as the probe molecule. The adsorption thermodynamics and kinetics of the BT on Hβ/OMC were studied. The characterization results showed that Hβ/OMC has the micro⁃mesoporous hierarchical pore structure, its specific surface area, pore volume and pore diameter are all higher than those of OMC. The saturated sulfur capacity of BT on Hβ/OMC is higher than OMC. Compared with Freundlich adsorption isotherm model, the adsorption of BT on Hβ/OMC is more consistent with Langmuir model. The adsorption of BT on Hβ/OMC is a process of spontaneous, exothermic and degree of confusion reduction, which is described better by pseudo⁃two⁃kinetic equations than pseudo⁃one⁃kinetic equations.
2019, 39 (6): 15-20.
DOI:
10.3969/j.issn.1672-6952.2019.06.003
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Research of Adsorption Desulfurization by Using Metal Modified Mesoporous Carbon
Zhang Zhifang, Li Jian, Liu Yingying, Yang Lina
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595
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Mesoporous carbon was prepared by loading four different metal ions Ag+/MC, Zn2+/MC, Cu2+/MC, and Fe3+/MC by impregnation method using mesoporous carbon (MC) as the carrier.The influence of the loading quality and the species of the metal ions on the adsorption were investigated.The results show that the adsorption capacity of two thiophene (DBT) can be improved by loading Ag+, Zn2+, Cu2+ and Fe3+ on the surface of mesoporous carbon.The optimum adsorption efficiency of mesoporous carbon with different metals is compared. The order of adsorption capacity of DBT is Ag+/MC>Zn2+/MC>Cu2+/MC>Fe3+/MC. Among them, the adsorption efficiency of loading 10% Ag+ on the mesoporous carbon is best. Compared with the untreated mesoporous carbon sulfur saturation capacity increases 1.11 mg/g, through the sulfur capacity also rises 1.93 mg/g.
2017, 37 (4): 6-10.
DOI:
10.3969/j.issn.1672-6952.2017.04.002
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The Effect of the Measuring on Sulfur Content of Catalytic Diesel Fuel with MicroCoulometry
Zhang Xu, Yang Lina, Dong Jiali, Li Jian
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600
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The mass fraction of sulfur contained in the catalytic diesel was determined by microcoulometry measurement, the effects of the integral resistance and magnification to the measurement results were investigated, and in addition, the optimal conditions were confirmed. Under the optimized conditions,precision and recovery rate of the external standard samples on catalytic diesel were investigated, and showed that the sulfur content measured with pretty good accuracy and repeatability with a magnification of 200 times, integral resistance of 600 Ω. It was a simple, rapid and accurate method for measuring large quantities of samples.
2014, 34 (5): 15-18.
DOI:
10.3696/j.issn.1672-6952.2014.05.005