Abstract:Abstract: LiVOPO4@C composite were prepared by in-situ coating technique using LiVOPO4 and tributyl borate as raw materials. The microstructure, surface morphology and electrochemical properties were characterized by various electrochemical methods in combination with elemental CHNS analysis, N2 adsorption-desorption isotherm measurements, X-ray diffraction(XRD) and scanning electron microscope(SEM) and transmission electron microscopy (TEM). It is found that the porous carbon layer is coated on the surface of LiVOPO4 due to the pyrolysis of tributyl borate. The existence of boron inhibits vanadium in LiVOPO4 reduction from V4+ to V3+ to form Li3V2(PO4)3 as impurity, assuring the information of pure LiVOPO4@C composite. The porous carbon offers commodious channels for lithium ion to transfer in the electrode materials, improves the electric contact between the electrode particles, prevents the LiVOPO4 particles from aggregation, decreases the polarization of cell and thus improves the electrochemical properties of LiVOPO4 effectively. The electric conductivity of the LiVOPO4@C composite with a shell thickness of 8 nm is more than 1.35×10-8 S/m. The first discharge capacity of the LiVOPO4@C composite at 0.2C is146.0mAh/g and 98.8% of the discharge capacity is distained, while 96.25% of the discharge is distained cycling at 1.0C for 50 times.

Abstract:Abstract：Polyaniline doped with dodecylbenzenesulfonic acid (DBSA) and citric acid was prepared and characterized by CV, thermogravimetric analysis and FT-IR. The conductivity, solubility and electrochromism of polyaniline were studied. The results show that when the molar ratio of DBSA to citric acid is 1:1，the conductivity reach maximum, which is 6.67 S.cm-1. When the molar ratio of DBSA to citric acid is 0.25:1, the solubility of polyaniline in dimethylbenzene is 1.4758 g and can realize uniform electrochromism at -1.5～1.5 V voltages. The electrochromic range is yellow-yellow green-green-blue-deep blue with short response time and the change is reversible.

Abstract:An ion-imprinted composite membrane using microporous polypropylene An ion-imprinted composite membrane, with microporous polypropylene membrane (MPPM) as support, was prepared by a modified UV-induced graft copolymerization. In the graft strategy, photoinitiators were immobilized on the surface of MPPM by combining the physical entrapment and UV-induced covalent immobilization methods. The effects of preparation conditions on grafting amount of ion-imprinted polymer were discussed. The distributions of ion-imprinted polymer on the surface and cross-sectional of the composite membrane were analyzed by field emission scanning electron microscopy-energy dispersive X-ray spectroscopy (FESEM-EDX). Static water contact angle and pure water flux measurements were also conducted. Results show that the imprinted composite membranes have satisfactory surface hydrophilicity and penetrability, and the pure water flux is up to 2077  77 L/m2h. The regeneration experiments indicate that, the ion-imprinted composite membranes have favorable regeneration performances. After ten adsorption-desorption cycles, adsorption capacity and selectivity coefficients of the ion-imprinted composite membranes can maintain more than 90% and 80%, respectively.

Abstract:In this paper, the synthesis of N,N’-Bis(nitrobenzodifuroxan) oxalic amide is described in detail. 3,3’, 5,5’-Tetrachlo -2,2’, 4,4’,6, 6’- hexanitrooxanilide（Ⅰ） reacted with sodium azide in DMF-water to give 3,3’, 5,5’-Tetraazido -2,2’, 4,4’,6, 6’- hexanitrooxanilide (Ⅱ) at room temperature in 79.8% yield. N, N’-bis (nitrobenzodifuroxan) oxalic amide（Ⅲ） was obtained in 79.1％ yield from (Ⅱ) and in propionic acid through denitrogenation at 110℃. The decomposing point of (Ⅲ) is 220℃. The structures of N, N’-bis (nitrobenzodifuroxan) oxalic amide has been determined by IR, MS and elemental analysis. The target compound has a density of 1.86g?cm-3 found, a detonation velocity of 8.529km?s-1, and a detonation pressure of 33.31GPa. The impact sensitivity (h50) is 70.02cm which is predicted by the oxygen balance index (OB100).

Abstract:Three novel surfactants, p-(n-alkyl)-benzyl Polyoxyethylene ether Carboxybetaine ,were synthesized from fatty acid ,benzene and Triethylene Glycol through Friedel-Crafts acylation, Huang-Minlon reduction, chloromethylation, Williamson reaction, halogenation and quaterisation reaction. The structures of the products were characterized by IR, 1HNMR and ESI-MS methods. The critical micelle concentration (CMC) and the surface tension at the CMC (γCMC) of the surfactants in aqueous solution at 30℃ were measured by means of the Wilhelmy-plate method. The results showed that the values of CMC (mol/L) reached to the order of magnitude of 10–4~10-6 and the values of γCMC were 27-30mN/m. The CMC (respectively 1.12×10-4、1.51×10-5、6.21×10-6 mol/L) was observed to decrease, as the change of carbon atom number (n=8,10,12) of the substituted hydrophobic chain of benzene ring, however, γCMC(respectively 27.9，28.4，29.9 mN/m) increased as the number of carbon atoms increases. The experiment results showed that these surfactants have high surface activities.

Abstract:The target product cationic ester-containing gemini surfactants called 1,3-Bis(3-methylimidazolium)-2,2-bis(dodecanoatemethyl)-propane（EminC12） was synthesized with lauric acid, 2,2-bis(bromomethyl)-1,3-propanediol and N-methylimidazole.The main reaction includes esterification and quaternization.The reaction process was studied as follows: n (lauric acid) ／n(2,2-bis(bromomethyl)-1,3-propanediol)=2.2:1,reacted at 115 ℃ for 7 h , with p-toluenesulfonic acid as catalyst and methylbenzene as the water absorbent,the yield rate of 1,3-dibromine-2,2-bis(dodecanoatemethyl)-propane（DEC12） was 87 %.The quaternization conditions: the yield rate of target product which was identified by IR、elementary analysis and 1H NMR could reach to 80 % when the intermediate and N-methylimidazole reacted at 150 ℃ for 5 h.The critical micelle concentration of CMC is 0.3 mmol／L and γcmc is 39 mN／m at 25 ℃.This new surfactant shows higher foaming and stability.

Abstract:Surface activity and application performance of aqueous solutions of the nonylphenol polyoxyethylene ether propyl sulfonate (NPSO-5) were studied. The paper discussed the surface tension and the foaming Application and surface properties of sodium nonylphenol polyoxyethylenated propyl sulfonate(NPSO-5) were determined to elucidate the relationship between application/surface properties and hardness of water and oilfield water, then compared with LAS、AOS and AES. The effects of some additives, butyl alcohol and dodecanol on foaming properties were carried out. The wettability and emulsifyiability of NPSO-5 in hard water and the wettability in NaOH(aq) were also studied. The results showed that the foaming properties were better in hard water, and the additives enhanced the foaming properties to some extent by changing the structure of the foam film. Compared with LAS and AOS, NPSO-5 had a strong resistance to hard water. The critical micelle concentration(CMC) decreansed in the hardness of water. NPSO-5 surfactant still has excellent wettability and emulsifyiability in NaOH(aq) and hard water.

Abstract:Stearic acid methyl diethanolamine ester was synthesized from stearic acid and N-methyl diethanolamine, and then the intermediate was quaternized by γ-chloropropyl methyl dimethoxysilane to get the product siloxane quaternary ammonium salt containing ester group in this study. The effect of molar ratios of raw materials, reaction temperature, reaction time and catalyst dosage on the conversion of stearic acid were investigated by the orthogonal experiment. The optimal reaction conditions for the esterification were found to be 180℃ for 6h with hypophosphorous acid as ascatalyst at 1.6：1.0 molar ratio.The maximum yield of product was 56.42% in dimethyl sulfoxide. The intermediate and product were characterized by FTIR. The surface chemical properties were investigated at 298 K. The result show that the cmc is 0.197g/L, the γcmc is 24.25 mN/m, surface tension is 19.65mN/m and the softening performance of the sample is superior to general commercial products.

Abstract:Conduction polymer nanowires arrays have promising applications in supercapacitor electrode materials. In this paper, It reported a facial approach to synthesize microporous carbon-polyaniline nanowire (MC/PANI) composites, the working electrode was prepared with the MC/PANI composites, and the electrochemical capacitance of it were characterized by cyclic voltammetry, A.C. impedance and galvanostatic charge-discharge in 1 mol/L H2SO4 solution, The result indicated that specific capacitance of the MC/PANI electrode can be high as 329 F/g at a current density of 0.2 A/g, which is higher than 259 F/g of PANI electrode at the same condition, the charge transfer resistance(Rct) of MC/PANI is smaller than MC or PANI. therefore, it is demonstrated that the PANI nanowires could enhance the electrochemical performance of electrode materials.

Abstract:Aminoacylase 1 (ACY1) from bovine kidney was recombinant expressed in E.coli BL21 (DE3) with the vector pETDuet. The enzymatic properties comparison between ACY1 and N-acetyl-ornithine deacetylase (NAO) were studied. Several influence factors of enzyme reaction such as pH, temperature, enzyme reaction time, surfactant and metal irons were investigated. The results indicated that the resolution of 300 mmol/L N-Ac-DL-Methionine with ACY1 needs 6 h, while NAO needs 2 h. The enzyme activity and conversion rate of NAO (1139.41 U/g and 98%) are about 1.7 times higher than ACY1 (671.24 U/g and 58.78%).

Abstract:Abstract：The catalytic amination of polyoxyalkylene polyols over the catalyst containing Ni-Cu-Cr in molar ratio 75:23:2 supported on γ-Al2O3 prepared by different preparation methods was investigated in this paper. The effects of conversion and selectivity on the catalytic amination were studied at different supports, calcination temperature and reduction temperature. Some catalysts were characterized by TG、H2-TPR、BET、XRD、SEM separately. The experimental results showed that the different preparation methods had significant impact on conversion; the difference between the highest and lowest conversion was 32.1%. As the reduction temperature of the catalyst precursor gradually increased, the conversion of polyoxyalkylene polyols was significantly improved on the catalytic amination. Research found that the polyoxyalkylene polyols conversion of 68.0% with the selectivity for polyoxyalkylene amines of 96.5% was obtained when the conditions were carried out calcination temperature at 350℃, reduction temperature at 600℃ and incipient wetness impregnation method.

Abstract:A novel MgO/CNTs solid base catalyst for catalytic distillation was prepared by the method of sol-gel. The Aldol condensation performances of these catalysts were tested by using acetone as the model reactant. The influence of some preparation parameters on this reaction was investigated. The results indicated that the molar ratio of Mg(NO3)2?6H2O to CH3(CH2)16COOH was 1:4, Dipping temperature was 110℃, aging time was 20.0h, calcination temperature was 450℃, calcination time was 3.0h . Under the optimum preparation conditions, the conversion of acetone was 3.96% and the selectivity to diacetone alcohol was 100%.

Abstract:A kind of nano-TiO2 with main structure of anatase crystal was prepared and supported on attapulgite. All these materials were characterized by XRD and TEM. The catalytic performance of the materials were evaluated by the polyester reaction, and the result showed: the catalytic activity of nano-TiO2 is close to Sb2O3, however, the catalytic property is unstable, and the hue b of polyester is larger; after the nano-TiO2 was supported on attapulgite, the catalytic center presented ideal dispersion state, the catalyst property were also more stable, and the hue b of polyester were better (from 14.05 to 8.17). Besides, the physical and chemical properties of the polyester influenced by the TiO2-complex catalyst were discussed by DSC and TGA, the result showed that the crystallization temperature of polyester increased by using TiO2-complex catalyst, and the content of diethylene glycol and the thermal performance were closed to normal polyester.

Abstract:Ropivacaine Hydrochloride was synthesized from piperidin-2 -carboxylic acid through acylation reaction and amidation reaction, followed by propyl reaction under ultrasonic irradiation. The effects of solvent, temperature and time under ultrasonic irradiation were investigated. The optimal conditions about the synthesis of ropivacaine hydrochloride were ascertained as follow: toluene as solvent，acylation reaction conditions were 40 ℃ for 1.5 h, propyl reaction conditions were 40 ℃ for 1 h. The total yield reached 57.8% and the objective product was characterized with melting point and 1H NMR.

Abstract:The composite zeolites A/X was synthesized by hydrothermal method from one synthesis gel without template. The effects of the ratio of raw material(SiO2:Al2O3、H2O:Na2O、Na2O:SiO2)on the synthesis of composite zeolite A/X were studied by means of X-ray diffraction, the results showed that the zeolites A and X were co-crystallized in a narrow range. TEM analyses indicated that the as-synthesized composite zeolite dispersal well. The calcium ion exchange capacity of the composite zeolites A/X was quite high as zeolite 4A, the magnesium ion exchange capacity of the products was much better than 4A zeolite and the ion exchange capacity for magnesium was increase with increasing content of zeolite X.

Abstract:A phenol copolymer poly(PHBA-co-PHSA) was synthesized by radical copolymerization of p-hydroxybenzoic acid and p-Hydroxybenzene sulfonic acid using HRP/H2O2 initiation. The effects of monomers ratio and HRP dosage on tanning properties of phenol copolymer were investigated. The structure of phenol copolymer was characterized by FTIR, NMR and GPC. The remarkable features of enzymatic radical polymerization are propagation of polymer chain by radical transfer and its molecular weight easy to control and produce conjugated system in its molecule. The results have led to the high activity of functional groups of copolymer and exhibited excellent tanning effects and benefited for dyeing and fatiliquoring of leather. The tanning results indicated that the shrink temperature (Ts) of tanned leather can reach to 78.6℃. Meanwhile the retanned leather is excellent in softness and fullness. The phenol copolymer in conjunction with chrome tannage shows better tanning results and the chrome tannage can be decreased.

Abstract:The core–shell structure ambient self-cross-linking acrylic emulsion was synthesized by core-shell structure seed emulsion polymerization method. Diacetone acrylamide（DAAM）and hydrazide adipate（ADH）were used as cross-linking monomers. Influence of different addition methods and different amount of DMMA-ADH on film properties were investigated. FTIR test confirmed that cross-linking reaction can be occurred when DMMA-ADH was introduced into the core or the shell. In this study, DMMA-ADH was introduced into the core and the shell of latex particles. The clear core-shell structure was characterized by TEM.

Abstract:AM/AMPS copolymer was synthesized in aqueous solution using adiabatic reaction. The polymerization was initiated by (NH4)2S2O8-NaHSO3 as the redox initiation system, and TMEDA, urea and EDTA-2Na were added at the same time. The exothermic process of adiabatic polymerization, the structure and the properties of copolymer were investigated. The results showed that the molecular weight of copolymer could reach 2.5×107 by falling initiation temperature and reducing initiator concentration, and the solubility of copolymer was perfect. In addition, the copolymer solution had significant capacities of increasing viscosity, excellent heat resistance and salt tolerance, and strong viscoelasticity at high temperature. The viscosity retention rate of copolymer solution was as higher as 84.2%, under the condition of fresh brine, 95℃ and a 60-day aging test. The polymer flooding could enhance oil recovery by 17.38% according to simulation displacement evaluation.

Abstract:Abstract In this work, a novel sterically hindered pheno1 derivatives was produced as a lubricant additive. Thermogravimet analysis(TG)indicated that this additive has higher thermal stability than commonly used phenolic antioxidant. The antioxidation property about the product was tested by adopting rotary bomb oxidation test(RBOT),pressurized differential scanning calorimeter(PDSC) and the EP antiwear performance has been investigated by using four-ball machine. The results showed that this additive has good antiwear property and antioxidation property.

Abstract:The rosin modified acrylate latexes with the particle of core-shell structure for PVC floor adhesives was synthesized by seeded semicontinuous emulsion polymerization. The effect of amount of rosin, way to add rosin, proportion of core and shell monomers on the properties of latexes had been studied. When the amount of rosin was 2%, ratio of core /shell monomers was 1:2, its initial tack(#33) was1.3cm, cohesive strength was 0.32 MPa.

Abstract:Abstract:Benzyloxycarbonyl chloride(CbzCl), L-serine was used to synthesize N-Cbz-L-serine. Reaction temperature, pH, the molar ratio of the starting materials and phase transfer catalyst was studied by orthogonal experiments. The optimum yield of N-Cbz-L-serine could reach to 93.2%. N-Cbz-L-serine benzyl ester was prepared by reaction of N-Cbz-L-serine and benzyl bromide. The effects of acid-binding agent, the feeding order of the starting materials and after treatment of product were investigated. The final results show that the N-Cbz-L-serine benzyl ester was catalyzed by triethylamine, which also was used as acid-binding agent. The purity of N-Cbz-L-serine benzyl ester can reach 98.5% by treatment of 10% sodium bisulfite. IR, 1HNMR, melting point, optical activity were applied to confirm the structure of the target molecule. HPLC was used to analyze the purity of product.

Abstract:The functional effect factors (conjugation, heavy-atom or steric effect) were used to design and synthesis four Cu(II) complexes based on Schiff-base Cu(II) complexes 1 (Cu(II) with N,N’-bis (3-methoxy-salicylidene)ethlene-1,2-diamine) and complexes 4 (Cu(II) with N,N’-bis(3-methoxy-salicylidene)phenylene-1,2-diamine). The structure of complex 2 was characterized by X-ray diffraction analysis. Furthermore, using NBT illumination method to determine those anti-oxidant activities, the result shows that, after changing structure, the anti-oxidation activity of complexes has been improved significantly. Additionally, several factors definitely influence the activity but the degree of influence were different.

Abstract:Nine novel compounds 1,1，-bis[(2-benzoylhydrazinyl)carbonyl]-ferrocene 3 were obtained from chlorocarbonyl ferrocene and aromatic formyl hydrazine by using microwave method. The structures of the title compounds have been determinded by IR, 1H NMR and ESI/MS techniques. The studies on the UV-Vis absorption spectroscopies show that the anion receptor 3f have selective recognition for F-, CH3COO-, and 3h, 3i for F-, CH3COO-, H2PO4-. Preliminary biological activity test show that ortho-substituted compounds 3a, 3b and 3c have bacteriostatic action to staphylococcus aureus, escherichia coli.