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SEPARATION SCIENCE AND TECHNOLOGY · 2019 · IF 1.354

Adsorptive removal of nitrogen compounds from fuel oil by a poly ionic liquid PVIm-PXDC

Chenhua Shu,Lina Wang,Peijun Kong,Meizhu Gao

A poly ionic liquid, poly(1-vinyl imidazole)-p-xylylene dichloride (PVIm-PXDC), was synthesized and used for fuel oil denitrogenation. The structure of PVIm-PXDC was characterized and the denitrogenation performance was investigated. Results indicate that the pseudo-second-order kinetic model and Langmuir model are appropriate to describe the adsorption kinetics and thermodynamics, respectively. The adsorption ability of PVIm-PXDC for different nitrogen compounds follows the order of indole > pyrrole > quinoline > pyridine. The equilibrium adsorption amount decreased about 10% for all the nitrogen compounds after six regeneration cycles and the denitrogenation and regeneration processes have no influence on the structure of PVIm-PXDC.

CAS / MDL: 78-67-1 68-12-2 142-82-5 120-72-9 109-97-7 110-86-1 59-31-4 108-88-3

研究领域: 化学工程 · 材料科学

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POLYMERS FOR ADVANCED TECHNOLOGIES · 2015 ·Vol. 26 ·期 5 ·476-486 · IF 1.757

Surface imprinted polymers for oil denitrification with the combination of computational simulation and multi-template molecular imprinting

Pengfei Ma,Wenming Yang,Ting Fan,Hong Liu,Zhiping Zhou,Jinhui Li,Lin Zhang,Wanzhen Xu

Multi-template molecular imprinting technique was employed for the theoretical study about industrial oil denitrification. Prior to the preparation of multi-template molecularly imprinted polymers (MT-MIPs), density functional theory was used for simulating the imprinted pre-assembly systems composed of template (aniline, indole, or 3-methylinndole) and monomer [methacrylic acid, acrylamide (AM), and 4-vinylpyridine]. MT-MIPs were synthesized as surface MIPs simply and successively by seeded emulsion polymerization or two-stage precipitation polymerization. The experimental results were consistent with the simulative results, which demonstrated that AM was more suitable monomer together. In addition, seeded emulsion polymerization synthesized MT-MIPs with better performance compared with two-stage precipitation polymerization. The adsorption kinetics and adsorption isotherm of MT-MIP prepared with AM using seeded emulsion polymerization were fitted with different models. The fitting results indicated that pseudo-second-order kinetics model and Freundlich isotherm model were suitable for describing the adsorption process of AM seeded emulsion polymerization. This study will provide a certain guidance and theoretical basis for introducing the combination of multi-template molecular imprinting technique and computational simulation into the field of industrial denitrification. Copyright © 2015 John Wiley & Sons, Ltd.

CAS / MDL: 78-67-1 62-53-3 7727-54-0 120-72-9 625-45-6 83-34-1 151-21-3

研究领域: 环境科学 · 化学工程 · 计算化学

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Adsorptive removal of nitrogen compounds from fuel oil by a poly ionic liquid PVIm-PXDC

Surface imprinted polymers for oil denitrification with the combination of computational simulation and multi-template molecular imprinting