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	1. Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites
	Jun Hu,Deliang He,Tao wan,Huibin Lei,Yao Lu,Houqiang Huang
	Chemical Engineering 22 May 2018
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	Abstract:The Ag-Y, Ce-Y and Cu-Y zeolites were successfully prepared for removing corrosive sulfur from transformer insulating oil. The adsorptions and kinetics of corrosive sulfur on Ag-Y, Ce-Y and Cu-Y were studied, and activation energies (Ea) of adsorption processes were calculated. The results show that the desulfurization properties of these three adsorbents were Ag-Y > Ce-Y > Cu-Y, and 0.5wt% Ag-Y adsorption capacity of DBDS and NDM was up to 15.2mg/g and 18.8mg/g respectively. The kinetics for the adsorption process can be described by pseudo-second-order model and adsorption rate constants increase with an increase of temperature, indicating the endothermic nature of the adsorption. The adsorption process on Ag-Y was dominated by chemical adsorption, whereas the adsorption process on Ce-Y was dominated by physical adsorption, and the adsorption on Cu-Y was performed simultaneously by chemical and physical adsorption.
	TO cite this article:Jun Hu,Deliang He,Tao wan, et al. Kinetics of corrosive sulfur adsorption in transformer oil with Ag-Y, Ce-Y and Cu-Y zeolites[OL].[22 May 2018] http://en.paper.edu.cn/en_releasepaper/content/4745164


	2. Synthesis of comb-like macromolecules and their self-assembly behavior on silicon wafer
	LI Lina,HUANG Jiajia,ZHANG Yanwu
	Chemical Engineering 16 April 2018
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	Abstract:Construction of macromolecular topology and control of chain sequence are foundations to synthesize macromolecules with multifunction. Comb-like macromolecules have more designable freedoms because their back-bones and branched chains can be independently designed and synthesized. Herein, the rigid back-bones of comb-like macromolecules had been synthesized by ROMP of norbornene derivatives anchoring RAFT agent. The gradient polymer branched chains with controlled sequence structure was synthesized through a modified RAFT miniemulsion polymerization of 4-vinylpridiene (4VP) and t-butyl acrylate (tBA) in a semi-batch manner. These comb-like macromolecules can self-assembly into arrays due to the stiffness of backbone when dilute solution of comb-like macromolecules are brushed onto silicon surface. The size of arrays is affected by molecular weight and sequence structure of branched chains. The effect of these arrays on water contact angle of silicon is studied also.
	TO cite this article:LI Lina,HUANG Jiajia,ZHANG Yanwu. Synthesis of comb-like macromolecules and their self-assembly behavior on silicon wafer[OL].[16 April 2018] http://en.paper.edu.cn/en_releasepaper/content/4744582

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	3. Manufacture of 2-Methylenglutaronitrile from Acrylonitrile Dimerization in an IonicLiquid Medium
	Shi Yunhai,Wei Qing,Peng Siyao,Wang YiYuan,Wei Juan,Yang Zuoguo
	Chemical Engineering 04 December 2017
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	Abstract:Manufacture of 2-methylenglutaronitrile (MGN) from acrylonitrile dimerization with two kinds of imidazolium ionic liquids, i.e., [Bmim]Cl and [Emim]BF4, was studied in this paper. The influences of reaction temperature, reaction time, the amount of catalyst and that of ionic liquid on the yield of MGN were investigated by the method of single-factor experiment. The results illustrared that the yield of MGN with [Emim]BF4 ionic liquid is higher than that with [Bmin]Cl. The ionic liquids can be recycled for 4 runs by extraction with toluene and no significant catalytic activity loss was observed. An orthogonal experimental table with the five-factor and four-level, denoted as L16(45), was designed for optimizing the operation conditions of MGN synthesis. The optimal results illustrated that the maximum yield of MGN could rise above 90.5% under the conditions of 50 C, 24h, 2.0g catalyst and 5.0g ionic liquid, which is higher than that of the literatures reported.
	TO cite this article:Shi Yunhai,Wei Qing,Peng Siyao, et al. Manufacture of 2-Methylenglutaronitrile from Acrylonitrile Dimerization in an IonicLiquid Medium[OL].[ 4 December 2017] http://en.paper.edu.cn/en_releasepaper/content/4742552


	4. Modified Langmuir equation for predicting type II adsorption isotherms
	ZHANG Peikun
	Chemical Engineering 07 May 2017
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	Abstract:The Langmuir adsorption isotherm equation is modified to include more parameters for fitting Type II isotherms according the Brunauer classification. Unlike some isotherm equations which have a singularity when pressure equal to saturation vapor pressure, one advantage of the modified Langmuir equation is its validity when the iterative value of adsorbate pressure reaches a value around the saturation vapor pressure in numerical simulation. With four equation constants, the modified Langmuir equation fits the full range of isotherms with high accuracy for water on the adsorbents discussed.
	TO cite this article:ZHANG Peikun. Modified Langmuir equation for predicting type II adsorption isotherms[OL].[ 7 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4727248


	5. FYCHWQDE-based affinity chromatography of IgG: Effect of ligand density and purification from human serum
	XUE Aiying,YU Linling,SUN Yan
	Chemical Engineering 26 April 2017
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	Abstract:In our previous work, it has reported on the identification of the octapeptide ligand FYCHWQDE for human IgG (hIgG) affinity chromatography. In this work, effect of ligand density on dynamic binding capacity (DBC) of hIgG on the FYCHWQDE-based resins with ligand densities of 31.1-59.4 μmol/mL and purification of hIgG from human serum were studied. DBC at 10% breakthrough, measured by using 10-fold diluted human serum as feedstock, reached the maximum (27.6±1.3 mg/mL) at 45.3 μmol/mL drained gel and decreased remarkably with increasing flow rate. By using this affinity column with ligand density of 45.3 μmol/mL, hIgG purification from human serum was achieved with high purity (>90%) and recovery yield (82%). The experimental results indicate that the FYCHWQDE-based resin would be a favorable affinity resin for hIgG purification from human serum.
	TO cite this article:XUE Aiying,YU Linling,SUN Yan. FYCHWQDE-based affinity chromatography of IgG: Effect of ligand density and purification from human serum[OL].[26 April 2017] http://en.paper.edu.cn/en_releasepaper/content/4728711


	6. Magnetic targeting effect of methotrexate-loaded Fe3O4-PLLA-PEG-PLLA microspheres prepared in supercritical CO2
	TANG Na,WANG Shibin,CHEN Aizheng
	Chemical Engineering 13 December 2016
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	Abstract:The magnetic targeting effect of methotrexate-loaded Fe3O4-poly (L-lactide)-poly (ethylene glycol)-poly (L-lactide) magnetic composite microspheres (MTX-Fe3O4-PLLA-PEG-PLLA MCMs, MMCMs) prepared by co-precipitation (C) and microencapsulation (M) in a process of suspension-enhanced dispersion by supercritical CO2 (SpEDS) was evaluated. The observations of movements and aggregations of MMCMs indicate a good magnetic response in vitro. The results of Prussian blue iron-staining in tumor and the distribution of MTX in S-180-bearing KM mice demonstrate that MMCMs with magnetic field induction could effectively target to tumors. The MTX concentration in tumors treated with free MTX, MMCMs(C) and MMCMs(M) were 8.13±0.46 ng/mL, 138.71±66.22 ng/mL and 282.11±9.36 ng/mL, respectively. This reveals that MMCMs(M) with magnetic field induction possessed a much more remarkable targeting effect than MMCMs(C) and free MTX formulations. This study demonstrates that MMCMs(M) could effectively response to the magnetic induction both in vitro and in vivo, and have potential for application in magnetic targeting therapy of solid tumors. ?????
	TO cite this article:TANG Na,WANG Shibin,CHEN Aizheng. Magnetic targeting effect of methotrexate-loaded Fe3O4-PLLA-PEG-PLLA microspheres prepared in supercritical CO2[OL].[13 December 2016] http://en.paper.edu.cn/en_releasepaper/content/4713859


	7. Catalyzed synthesis of 2-(4'-ethylbenzoyl)-benzoic acid by supporting Cs2.5H0.5PW12O40 on silica gel
	Guo Dong,Wan Yazhen,Zhang Wenhui,Zhang Yanwu
	Chemical Engineering 03 November 2016
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	Abstract:Supported Cs2.5H0.5PW12O40 were used as the catalyst for Friede-Crafts acylation of phthalic anhydride with ethyl benzene to 2-(4′-ethylbenzoyl)benzoic acid (BEA). The catalysis of silica gel (SG） loaded with different amounts of Cs2.5H0.5PW12O40 (varying 5 wt%-30 wt%) were prepared through a simple and effective impregnation method. The samples were characterized by XRD, FT-IR, BET, Hammett indicator and ammonia adsorption-desorption, and revealed that Cs2.5H0.5PW12O40 dispersed highly on the surface of SG. The catalytic performance of the samples in the synthesis of BEA was also studied. The results indicate that the sample with 10 wt% Cs2.5H0.5PW12O40/SG shows the highest catalytic activity, and the best yield of BEA reached 62.6% when the reaction parameters such as effect of reaction temperature, effect of reaction time, molar ratio of phthalic anhydride to ethyl benzene were under optimized conditions. The reusability tests of the catalysts show that the catalysts can be used several times without significant loss in activity.
	TO cite this article:Guo Dong,Wan Yazhen,Zhang Wenhui, et al. Catalyzed synthesis of 2-(4'-ethylbenzoyl)-benzoic acid by supporting Cs2.5H0.5PW12O40 on silica gel[OL].[ 3 November 2016] http://en.paper.edu.cn/en_releasepaper/content/4706802


	8. Selective Ethylene Oligomerization with Chromium-based Metal-Organic Framework MIL-100 Evacuated under Different Temperatures
	HAN Yang,ZHANG Ying,LIU Suyan,FENG Guangliang,GAO Fei,WANG Hui
	Chemical Engineering 08 October 2016
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	Abstract:MIL-100(Cr) was synthesized and evacuated under different temperatures to generate a series of Cr-based heterogeneous catalysts for ethylene slurry oligomerization. Their crystal structures, pore properties and metal oxidation states were characterized by XRD, N-adsorption/desorption and XPS techniques. These catalysts showed moderate catalytic activities for ethylene oligomerization but high selectivities to low carbon olefins C6, C8 and C10. Moreover, the oligomer distributions were different depending on the evacuation temperatures. The XPS results showed that the increase of evacuation temperature below 350 oC caused the reduction of some CrIII active sites in the MIL-100(Cr) structure to CrII active sites, which made the catalytic behavior switch from oligomerization to oligomerization plus polymerization activities. The MIL-100(Cr)-250 catalyst evacuated at 250 oC exhibited the largest BET surface area of 2348 m2og-1 and the highest oligomerization and polymerization activities up to 9.27×105 g/(molCroh) and 0.99×105 g/(molCroh) respectively. The main oligomerization products were low carbon olefins C6, C8 and C10. The by-product polymer from MIL-100(Cr)-250 was also characterized in detail by various techniques. It was found that the polymer belonged to linear polyethylene with ultrahigh molecular weight and broad molecular weight distributions. This work demonstrated that MOFs containing coordinatively unsaturated metal sites might be a promising selective catalyst for ethylene slurry oligomerization.
	TO cite this article:HAN Yang,ZHANG Ying,LIU Suyan, et al. Selective Ethylene Oligomerization with Chromium-based Metal-Organic Framework MIL-100 Evacuated under Different Temperatures[OL].[ 8 October 2016] http://en.paper.edu.cn/en_releasepaper/content/4706439


	9. Thermal regeneration of spent CeY sorbent used for thiophene adsorption from benzene
	LV longfei,LIAO Junjie,XIE Yuanyuan,FAN Lijun,CHANG Liping,BAO Weiren
	Chemical Engineering 05 August 2016
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	Abstract:Benzene is an important chemical raw material, and coking benzene is one of its main resources, so the thiophene impurity should be deeply removed. The CeY adsorbent prepared by NaY zeolite ion-exchanging by cerium ion has been reported an excellent adsorption desulfurization ability. Thus it is necessary to investigate its regeneration behavior. In this paper, the spent CeY sorbent adsorbing thiophene in benzene (TBY) was regenerated by thermal treatment under various conditions. The desulfurization efficiency of regenerated TBY samples was measured by static adsorption experiment. The results show that the regeneration temperature, regeneration time and oxygen content are the main influence factors for the regeneration of TBY samples. The regenerated performance of sorbent is mainly affected by sulfur and carbon content remained. The optimized regeneration condition is air atmosphere with the space velocity of 1000 h-1 at 500 oC for 1 h, and the corresponding desulfurization efficiency of regenerated TBY sample is over 96%.
	TO cite this article:LV longfei,LIAO Junjie,XIE Yuanyuan, et al. Thermal regeneration of spent CeY sorbent used for thiophene adsorption from benzene[OL].[ 5 August 2016] http://en.paper.edu.cn/en_releasepaper/content/4701982


	10. Effluence of modification on the deep desulfurization behavior of NaY and Na13X zeolite for thiophene
	LIAO Junjie,Liu Yang,Bao Lei,Chang Liping,Bao Weiren
	Chemical Engineering 05 August 2016
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	Abstract:NaY and Na13X zeolites were modified by different modification manners, which are H+ modification, metal ion (copper, nickel or cerium ions) modification and H+ modification followed by metal ion modification, to prepare series of sorbents. The properties of these sorbents were measured by XRD, N2 adsorption and SEM/EDS. The desulfurization activity of these sorbents was evaluated in a model gasoline made of thiophene and cyclohexane, and the results were compared to investigate the effect of preparation methods on adsorption desulfurization behavior. The results show that H+ modification or metal ion modification could all improve the desulfurization efficiency of both NaY and Na13X zeolites, however, for Na13X, after modified by copper or nickel ions, its crystal structure was destroyed, and thus the desulfurization efficiency is much lower than before. The desulfurization activity of the sorbents prepared via H+ modification followed by metal ion modification is higher than that of sorbents prepared by single H+ modification or metal ion modification because pre-modification by H+ can increase the metal content, specific surface and pore volume of sorbent in the following metal ion modification process. Compared with Na13X, NaY is more suitable for H+ modification followed by metal ion modification. Among those prepared sorbents, the CuHY sorbent prepared via NaY modified via H+ and followed by copper ion, has the highest desulfurization efficiency at room temperature.
	TO cite this article:LIAO Junjie,Liu Yang,Bao Lei, et al. Effluence of modification on the deep desulfurization behavior of NaY and Na13X zeolite for thiophene[OL].[ 5 August 2016] http://en.paper.edu.cn/en_releasepaper/content/4701979

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