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Long C.,Nanjing University | Long C.,National Engineering Research Center for Organic Pollution Control and Resources Reuse | Li Q.,Nanjing University | Li Y.,Nanjing University | And 5 more authors.
Chemical Engineering Journal | Year: 2010

The benzene and chlorobenzene is the representative of VOCs and widely exist in the industrial waste gas. In this paper, the removal characteristics of benzene and chlorobenzene vapor using a microporous hypercrosslinked polystyrene adsorbent (HPsorbent) were studied. The HPsorbent had the similar equilibrium adsorption capacities for benzene and chlorobenzene vapors with commercial granular activated carbon (GAC). The breakthrough adsorption capacities of benzene and chlorobenzene in the single and binary vapor system were also investigated. Although there exist a competitive adsorption between benzene and chlorobenzene vapors on HPsorbent, benzene and chlorobenzene removals of above 99% in the both system was attained before significant breakthrough occurred. On the other hand, a pilot-scale experiment was carried out to investigate the effectiveness of using HPsorbent to remove benzene-chlorobenzene vapors mixture from industrial byproduct hydrogen chloride gas. The results show that the hydrogen chloride gas did not have an adverse effect on the adsorption of benzene and chlorobenzene. In sum, HPsorbent should be potentially an effective adsorbent for removal of benzene-chlorobenzene vapors not only from air stream but also from hydrogen chloride gas. © 2010 Elsevier B.V.

Ding K.H.,Yangzhou University | Wang G.L.,Jiangsu Yangnong Chemical Group Co. | Zhang M.,Yangzhou University
Journal of Applied Polymer Science | Year: 2012

In this article, the ZnS/epoxy nanocomposites were successfully prepared by the reaction of zinc acetate and H 2S gas via a simple step. Epoxy resin acted as the matrix for the formation of ZnS nanoparticles (10-20 nm) in the reaction system and kept them from agglomerating. The structure, composition, and mechanical properties of the resultant products were successfully investigated by powder X-ray diffraction, transmission electron microscope, field emission scanning electron microscope, energy dispersive X-ray fluorescence, and universal testing machine. Meanwhile, by employing differential scanning calorimetry (DSC) we had studied, under nonisothermal condition, the kinetic analysis of the cure reaction which was performed using two classic models: Kissinger and Flynn-Wall-Ozawa. The activation energy of curing reaction was 74.63 kJ/mol and 77.57 kJ/mol, respectively, by Kissinger's and Flynn-Wall-Ozawa's methods. The possible mechanism of preparation of ZnS/epoxy composites was discussed in this article. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012.

Wu L.,Yangzhou University | Jing X.,Yangzhou University | Lin M.,Yangzhou University | Yan C.,Yangzhou University | And 2 more authors.
Synthetic Communications | Year: 2012

In this article, a new result of the reaction of 6-aminouracil with aldehyde catalyzed by BF 3 and aniline is established, which gives a new strategy for the synthesis of di(6-aminouracil-5-yl)-arylmethane. The simple and convenient synthetic procedure and formation of di(6-aminouracil-5-yl)- arylmethane render this method very useful in synthetic and medicimal chemistry. © Taylor & Francis Group, LLC.

Ding K.,Yangzhou University | Ding K.,Jiangsu Yangnong Chemical Group Co. | Wang G.,Jiangsu Yangnong Chemical Group Co. | Zhang M.,Yangzhou University
Xiyou Jinshu/Chinese Journal of Rare Metals | Year: 2012

CoS nanoparticles were successfully prepared by the reaction of acetate solution and H2S gas in epoxy matrix. By employing differential scanning calorimetry (DSC), under non-isothermal condition, the kinetic analysis of the cure reaction was performed using two classic models: Kissinger and Flynn-Wall-Ozawa. Furthermore, the corrective properties of CoS/epoxy nanocomposites were studied by XRD, TEM, mechanical test and PL. The investigations showed that the mechanical properties of CoS/epoxy were obviously enhanced in the presence of MS nanoparticles. The possible mechanism of preparation of CoS/epoxy composites was discussed.

Ding K.H.,Yangzhou University | Ding K.H.,Jiangsu Yangnong Chemical Group Co. | Wang G.L.,Jiangsu Yangnong Chemical Group Co. | Zhang M.,Yangzhou University
Journal of Applied Polymer Science | Year: 2012

Polymer nanocomposites are usually made by incorporating dried nanoparticles into polymer matrices. This way not only leads to easy aggregation of nanoparticles but also readily brings about opaqueness for nanocomposites based on functionally transparent polymers. In this letter, transparent ZnO/epoxy nanocomposites with high-UV shielding efficiency were prepared via two simple steps: first, in situ preparation of zinc hydroxide (Zn(OH) 2)/epoxy from the reaction of aqueous zinc acetate (Zn(Ac) 2·2H 2O) and sodium hydroxide (NaOH) at 30°C in the presence of high-viscosity epoxy resin; second, thermal treatment of the as-prepared Zn(OH) 2/epoxy hybrid into ZnO/epoxy composites. Optical properties of the resultant ZnO/epoxy nanocomposites were studied using an ultraviolet-visible (UV-vis) spectrophotometer. The nanocomposites containing a very low content of ZnO nanoparticles (0.06 wt %) possessed the optimal optical properties, namely high-visible light transparency and high-UV light shielding efficiency. Consequently, the as-prepared ZnO/epoxy nanocomposites are promising for use as novel packaging materials in lighting emitting diodes technology. Copyright © 2012 Wiley Periodicals, Inc.

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