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首页> 外文期刊>Journal of Hazardous Materials >Experimental, kinetic, and thermodynamic studies of adsorptive desulfurization and denitrogenation of model fuels using novel mesoporous materials
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Experimental, kinetic, and thermodynamic studies of adsorptive desulfurization and denitrogenation of model fuels using novel mesoporous materials

机译：使用新型介孔材料对模型燃料进行吸附脱硫和脱氮的实验，动力学和热力学研究

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The kinetics, equilibrium and thermodynamics studies of adsorptive desulfurization and denitrogenation to eliminate the refractory sulfur and nitrogen compounds like BT, DBT, quinoline and carbazole of model fuel by mesoporous material (MSU-S) and cobalt modified mesoporous material (CoO-MSU-S) adsorbents were carried out. The adsorption performance, capacity and selectivity of the adsorbent toward sulfur and nitrogen compounds were examined. Equilibrium and kinetics experiments confirmed that Co+2 impregnation would enhance the adsorption capacity of MSU-S. The results demonstrated that CoO-MSU-S led to a considerable improvement in the adsorption performance. The adsorption amounts reached 18.41, 21.20, 39.65 and 24.60 mg.g(-1) for BT, DBT, quinoline and carbazole, respectively. The Langmuir isotherm model showed good fittings with the experimental equilibrium data for benzothiophene, dibenzothiophene and carbazole, and the data for quinoline was expressed well by the Freundlich for CoO-MSU-S adsorbent. Negative Gibbs free energy showed that all sulfur and nitrogen compounds were adsorbed spontaneously. The experimental data revealed that the pseudosecond-order model can describe the kinetics of adsorption of compounds on the adsorbent. The data obtained from the breakthrough curves indicated that DBT BT carbazole quinoline order for the selectivity of modified adsorbent towards the adsorbates.
机译：介孔材料（MSU-S）和钴改性的介孔材料（CoO-MSU-S）吸附脱硫和脱氮以消除模型燃料中难处理的硫和氮化合物如BT，DBT，喹啉和咔唑的动力学，平衡和热力学研究进行吸附剂。检查了吸附剂对硫和氮化合物的吸附性能，容量和选择性。平衡和动力学实验证实，Co + 2浸渍将增强MSU-S的吸附能力。结果表明，CoO-MSU-S导致了吸附性能的显着改善。 BT，DBT，喹啉和咔唑的吸附量分别达到18.41、21.20、39.65和24.60 mg.g（-1）。 Langmuir等温线模型与苯并噻吩，二苯并噻吩和咔唑的实验平衡数据吻合得很好，而喹啉的数据由Freundlich很好地表达了CoO-MSU-S吸附剂。负吉布斯自由能表明，所有硫和氮化合物都是自发吸附的。实验数据表明，伪二级模型可以描述化合物在吸附剂上的吸附动力学。从穿透曲线获得的数据表明，对于改性吸附剂对被吸附物的选择性，DBT

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