Abstract:This article from the polyethylene terephthalate (PET) of chemical structure. Combined with the special nature of subcritical water. Hydrothermal method is used to make PET hydrolysis under neutral condition to terephthalic acid (TPA) and ethylene glycol (EG). Through discussion on the effect of filler ratio, reaction time and reaction temperature on the PET hydrolysis rate and the yield of TPA. Research to determine the optimal hydrolysis conditions: feed ratio is 10, experimental temperature is 250℃, reaction time is 7h. Under the optimal conditions, PET PET degradation rate can reach 92.9%, the yield of TPA is 86.4%, the purity of TPA is 98.251% and the acidity of TPA up to 657.14 mgKOH/g. The study found that zinc acetate can accelerate the hydrolysis of PET. And has carried on the preliminary exploration on the hydrolysis mechanism of PET in subcritical water conditions.

Abstract:Manganese oxide octahedral molecular sieves (OMS-2) were prepared in high gravity reactor by redox precipitation method. The effects of the amount of acid, the rotation speed of reactor and reaction temperature on the properties of OMS-2 were investigated. SEM images and XRD patterns showed that the crystal structure of OMS-2 formed well when the amount of HNO3 added was 340ml and the rotation speed of reactor was 1200 r?min-1. Size control of OMS-2 was not achieved through changing the rotation speed of reactor, and reaction temperature could significantly alter the size of crystalline materials. Lateral growth rate along the diameter of OMS-2 nanorods rose when reaction temperature increased from 30℃ to 60℃. DSC thermogram and H2-TPR profile indicated that, in comparison with conventional reflux method, persistent release ability of oxygen species of OMS-2 materials synthesized by HGRP was better at temperature below 550℃ and the destruction of crystal structure was needless at the same time. Finally, this study provides a new green method to prepare one-dimensional OMS-2 nanorods on a large scale.

Abstract:Sb-SnO2/MMT/PPy ternary composites were prepared by means of a two-step method including the synthesis of well dispersed Sb-SnO2/MMT and the in-situ chemical oxidative polymerization of Pyrrole. Morphologies and microstructures of the resulting product were characterized by X- ray diffraction (XRD)、Transmission electron microscopy (TEM)、Differential thermal analysis (TG-DTA) and BET．Electrochemical properties of the ternary composites as electrode were investigated by cyclic voltammogram (CV), galvanostatic charge/discharge tests and electrochemical impedance techniques. The results show that the volume resistivity of ternary composites could reach to 2.7 Ω穋m when the covering ratio of polypyrrole was 20%. In addition, it exhibits a maximum specific capacitance of 83.1 F/g, which is greater than the specific capacitance of Sb-SnO2 / MMT binary cornposites．The positive synergy effect between the three components might enhance the capacitive performance．

Abstract:Fluorinated quaternary ammonium salts are surfactants, which exhibit some unusual physic-chemical properties, such as high surface activity, high thermally chemical stability, hydrophobic and oleophobic property. In this paper, the effect of the different reaction time, different kinds of oil phase, different mass fractiom and different inorganic salt added ratio on the oil-water interfacial tension was mainly examined. The contact angle formed by different concentration of fluorinated quaternary ammonium salts was also examined to investigate the performance of the wetting spread-ability on the different solid surface such as paraffin and iron. The results showed that the interfacial tension usually achieved basic balance after 10 minutes, and better effect and lower interfacial tension were got when use bohai 61# oil.With the increase of surfactant mass fraction，the interfacial tension was reduced to a minimum, which gradually lapsed into a smooth level. The addition of the inorganic salt made the interfacial tension of the solution first decrease and then increase，and ultra-low interfacial tension appeared in the scope of Sodium chloride concentration in 50-80 g/L, minimum of 0.0531 mN/m. Meanwhile, excellent wetting spread-ability performance was got on the typical surface of the wax which had the low energy and strong hydrophobic. This experiment provided the experimental data for the application in water-soluble occasion.

Abstract:Abstract: The bioleaching of vanadium from vanadium-bearing stone coal has been studied by using Acidthiobacillus ferrooxidans , in order to determine the feasibility and optimal technological conditions. The influence of parameters such as pulp density, leaching temperature, initial pH and oscillation speed on vanadium leaching efficiency was investigated. On the basis of single-factor experiments, the conditions including leaching temperature , initial pH and oscillation speed for the bioleaching were optimized by using Box–Behnken Design (BBD) and Response Surface Methodology (RSM). The results showed that the leaching efficiency of vanadium could reach 69.2%, when the optimum condition of the experiment was 3% for pulp density, 32 ℃ for leaching temperature, initial pH value of 2.1 and oscillation speed of 147 r/min．

Abstract:The catalytic activities of a series of Br鰊sted acidic ionic liquids on esterification of acetic acid with ethanol were investigated under batch conditions. Among the five hydrogen sulfate ionic liquids with cations of pyrrolidonium and imidazolium, the pyrrolidonium ionic liquid [Hnhp]HSO4 showed the best good performance and possessed lowest cost. The distillation technology combined with the ionic liquid [Hnhp]HSO4 as a catalyst was applied in continuous preparation of ethyl acetate. Under the optimum conditions of n (HOAc) : n (EtOH) : n ([Hnhp]HSO4) = 6 : 1 : 0.03(in reaction vessel), 110癈, n (EtOH) : n (HOAc) =1.02 : 1(feedstock), feeding rate 40 mL/h, reflux ratio 1, and ester reflux 35 mL/h, the EtOAc content in coarse ester product taken from the top of tower reached 94-96 %. The reactive distillation system maintained a good balance even after 48 hrs of reaction. Compared with sulfuric acid, the ionic liquid [Hnhp]HSO4 as a catalyst for the esterification is reusable, less corrosive to equipment and friendly to environment.

Abstract:Two acidic ionic liquids(ILS) based on N,N-bis (3- morpholinyl propyl) Piperazinium [(mp)2pi] trinuclear Quadrivalent cation including N,N-bis (3- morpholinyl propyl) Piperazinium tetra (trifluoromethanesulfonate)（ [(Hmp)2h2pi ](OTf)4）and N,N-bis (3- morpholinyl propyl) piperazinium tetra (hydrogen sulfate)([(Hmp)2h2pi ](HSO4)4) were synthesized and characterized .Their catalytic activities for the crossed Aldol condensation of cycloalkanones with aromatic aldehydes were examined and compared with other two single and dinuclear cations ILs :Morpholinium hydrogen sulfate ([Hnhm]HSO4) and piperazinium bis（hydrogen sulfate）([(Hnh)2pi](HSO4)2). The traditional industrial acid catalyst sulfuric acid has also been used for comparison .The results have showed that the catalytic activities of the trications type of ILs were stronger than that single or dinuclear ILs and sulfuric acid.Maxium product yield of 89% was observed on using [(Hmp)2h2pi ](OTf)4 as catalyst and it can be reused at least six times.

Abstract:Fluorescent brightener 4,4′-bis(2-sulfostryl)biphenyl disodium salt (CBS) was synthesized by using 4-chlorobenzyl chloride, trimethyl phosphite and benzaldehyde-2-sulfonic acid sodium salt as starting materials through three-step reaction. The chemical structure was characterized by means of IR and NMR. The photoinduced isomerization phenomena and fluorescence emission properties were studied. In addition, the effects of concentration, pH and light irradiation time on fluorescence properties were investigated. The whiteness measurement was performed through dyeing filter paper and cotton. The optimized reaction conditions were as follows: reaction temperature for sodium 2-(4-chlorostyry)benzenesulfonate synthesis was 45℃, n(4-chlorobenzyl chloride):n(sodium methoxide) = 1.0:1.1, reaction temperature for CBS synthesis was 80℃, m(catalyst):m(sodium 2-(4-chlorostyry) benzenesulfonate) = 0.04 and n(NiCl2):n(PPh3):n(Zn) = 1:3:2. The results show that the overall yield of CBS was 66.7%. With the increasing of light irradiation time, trans-isomers transformed to cis-isomers, fluorescence intensity reduced. The fluorescence intensity of CBS under alkaline condition was higher than that of acidic condition. The quenche mass concentration of CBS was 10 mg/L.

Abstract:In this thesis, the solution phase synthesis scheme and the classic ″3+2″ synthesis scheme was employed. Also the route was started from D-Phenyline and D -Leucine as raw materials. The linear peptapeptide was synthesized by protecting and deprotecting the amine, deprotecting the acid, methylating the amino acid, coupling and other steps. The cyclization step was completed by mixed condensation reagents with DEPBT, HATU and TBTU. Herein, two Galaxamide analogues HW-1 and HW-2 were synthesized, characterized by 1H-NMR, 13C-NMR, ESI-MS and ICP-MS. The in vitro anticancer activities of the target compounds were evaluated through MTT assays against various human cancer cell lines. It shows that they both exhibited strong inhibition on most of the cell line tested. In particular, they demonstrate a mean IC50 of 3.14 and 9.2 g/L in the Hep G2 cell line, respectively.

Abstract:With the water as the solvent, zinc propionate (C6H10O4Zn) was successfully synthesized from propionic acid and zinc oxide as the raw material by microwave and conventional hydrothermal methods. The effects of reaction temperature, time, molar ratio of propionic acid/zinc oxide and dosage of deionized water in the two synthesis process on the yield of C6H10O4Zn were studied through parallel experiments. The product was characterized by means of EDTA complexometric method, EA, FT-IR and TG. The results showed that the yields of C6H10O4Zn by microwave and conventional hydrothermal methods were 94.06% and 87.34%, respectively, under the optimal synthetic conditions. Compared with conventional hydrothermal method, microwave hydrothermal method had a great strengthening effect on synthesis of C6H10O4Zn. The synthesized product possessed the typical structure of C6H10O4Zn, and the composition of C6H10O4Zn was nearly the same for the two synthesis methods. However, C6H10O4Zn obtained by microwave hydrothermal method had more crystallization water and better thermal stability than that from conventional hydrothermal method.

Abstract:Waterborne epoxy resin with carboxyl was prepared by allyl glycidyl ether (AGE) and methacrylic acid (MAA) through one-step method based on the theory of free radical copolymerization. The influences of feeding way, initiator species and initiator dosages on the properties of polymer were discussed. The structure of polymer was characterized by Fourier Transform Infrared Spectroscopy (FT-IR) and Hydrogen Nuclear Magnetic Resonance (1H NMR), and the polymer was used in leather tanning. The results showed that the optimum synthesized conditions as follows: the initiating system was oxidoreduction system, the ammonium persulfate (APS) dosage was 11%, the monomer and APS were dropping in the polymerization process. Application results indicated that the shrinkage temperature of the leather tanned by polymer was 71℃, and the thickness increment ratio was 46%. The shrinkage temperature of the leather tanned by polymer associated with 3% chromium was 114.1℃, and thickness increment ratio resched 104%. Meanwhile, compared with the traditional chrome tanning method, the tanning process which tanned by polymer associated with 3% chromium reduced the Cr2O3 content of effluent effectively.

Abstract:The Self-emulsified latex and external emulsified latex have been prepared by acrylic (acrylate) monomer grafted chromium-containing protein which extracted from tannery solid wastes, and then used them filling to wet-chromed bovine hide. The stability of two kinds of latexes were analyzed by Zeta potential analyzer and high-velocity centrifuge, the results indicated that external emulsified latex had a better stability than self-emulsified latex. Ninhydrin color reaction and FTIR spectra proved the existence of acrylate polymer grafted protein polypeptide. Self-emulsified latex’s percent grafting (PG) and grafting efficiency (GE) were 94.37 % and 56.62 % and external emulsified latex’s were 113.05 % and 67.83 %, respectively. Application research found that latex had some obvious retanning characteristics to wet-chromed bovine hide, and self-emulsified latex’s thickening effect better than external emulsified latex’s.

Abstract:This paper introduce a kind of latex synthesized by the method of soap-free emulsion polymerization. The latex without adding stabilizers can be used for oil well cement. The monomers are styrene (St), methyl methacrylate (MMA) and butyl acrylate (n-BA), and 2-acrylamide-2-methyl propane sulfonic acid (AMPS) is used as polymeric emulsifier. The code of the soap-free latex is JAS. By using some analytical tools, such as Zeta Potential Measurement Analyzer, Transmission Electron Microscopy, Thermogravimetric Analysis and so on, the relationship between the amount of AMPS and JAS latex’s emulsion particle size distribution, particle Zeta potential, the thermostablity is investigated. The JAS latex without adding stabilizers can be used for oil well cement, and the latex cement is made. After cured for 72 h, the JAS latex cement’s Compressing strength and Cementing strength are higher than the base slurry cement’s, improving 13.35 MPa and 1.15 MPa respectively. This indicates that the JAS latex can significantly improve the performance of oil well cement.

Abstract:Abstract：Acylic trimethylcyclohexanol ester was synthesized from acrylic acid and 3,3,5 – trimethylcyclohexanol, while the methylbenzene worked as water carrying agent, the p-toluenesulfonic acid worked as catalyst.When the mass ratio of the p-toluenesulfonic acid was at 1.0% to the whole mass of reactants, the mole ratio of acylic acid to trimethylcyclohexanol was at 1.2, and the reaction temperature was at 125℃, the optimum conversion of the reaction could reach 94.86%. Moreover, an acrylate prepolymer was synthesized through semi-batch solution polymerization process in acetone, with AIBN as thermal initiator and 1-dodecanethiol (NDM) as chain transfer agent. It was concluded that the optimum process conditions were as follow: to the whole mass of monomer, the mass ratio of 2,2'-Azobis(2-methylpropionitrile) (AIBN) at 1%, 1-dodecanethiol at 2%, the temperature at 75℃. The acylic trimethylcyclohexanol ester prepolymer was synthesized with a viscosity of 12000mPa•s. Finally, an adhesive was prepared by the prepolymer, 1 - hydroxy cyclohexyl phenyl ketone, acrylic acid isobornyl ester(IBOA) and tri(propylene glycol) diacrylate( TPGDA). It has been revealed that the refractive index of the cured adhensive could reach 1.48 when the mass concentration of reactive thinning agent was 40%, and the mass ratio of TPGDA to IBOA was 3. Keywords: Acylate, Prepolymer, Optical clear adhesive, Refractive index

Abstract:One step ethoxylation reaction catalyzed by Al-Mg composite oxide is to used to synthesize 2-ethoxyethyl acrylate(EEA) by inserting ethylene oxide(EO) into ethyl acrylate(EA). Influences of catalyst preparation conditions on catalyst activity have been investigated, and the process conditions have been optimized. Surface morphology of catalysts is scanned by scanning electron microscope, and the product is characterized by FTIR. Under the optimal catalysts preparation condiotions and reaction preparations: mole ratio of n(Al3+)/n(Mg2+) 0.8 and calcinations temperature of catalyst 500℃; mole ratio of EA/EO 3:1, reaction temperature 130℃, and amount of catalyst 1.5%,the conversion of EO is 70%,the content of EEA is 57.59%, the the content of DEEA is25.29%, the content of TEEA is 11.54%.

Abstract:The effects of dispersants on stability of the red pigment dispersions in alcohol-soluble ink for white-board-marker have been studied in this paper. The non-ionic surfactant fatty alcohol polyoxyethylene ether (AEO-6), polymeric dispersant polyvinyl butyral (PVB), polyoxyethylene polyoxypropylene block copolymer (F68), polyvinyl pyrrolidone (PVP) and its mix respectively with AEO-6 were investigated regarding this purpose. The stability of the red pigment dispersion was evaluated by centrifugal separation-absorption spectrophotometry tests and particle size analysis. And in order to explore the interaction between polymer and surfactant, the rheological behaviour of the dispersions was tested. Finally, the dispersants which made the dispersion with good stability were used to prepare red white-board-marker ink, and the stability of ink was characterized through rheological tests and particle size analysis. The results show that the stability of the red pigment dispersions is considerably improved by the polymeric dispersants. Particularly the dispersion with the mass fraction of 1% PVB has exhibited excellent stability properties. In the pigment dispersions with the mixture of polymer and AEO-6, polymeric dispersants play a significant role, AEO-6 does not play a main role. The red white-board-marker ink which dispersed by PVB has excellent stability properties. This result is consistent with the red pigment dispersion.

Abstract:4 dithiodipropionamides and 4 corresponding trithiodipropion- amides were synthesized by methyl acrylate and amine, and detected by Mass spectrometer, NNR spectrometer and infrared spectrometer. Compared with dithiodipropionamides, the bioassay results of Escherichia coli and Staphylococcus aureus showed that, the trithiodipropionamides possessed better antibacterial activities, and the minimal inhibitory concentration values to the two bacteria of N,N-di-methyl-trithiodipro- pionamide(2a) and N,N-di-ethyl-trithiodipropionamide(2b) reached about 0.03 mg/mL. The study of their antifouling properties submerging in the ocean for a year showed that, all compounds displayed good antifouling property, 2a and 2b displayed the best.

Abstract:Taken Pd(0)-catalyzed one-pot cascade reaction as key step, the key intermediate of Amorfrutin B, (E) - 7- hydroxy - 2, 2 - dimethyl - 8 - (3, 7 - dimethylocta - 2, 6 - dienyl) - 5 - phenethyl - 4H - benzo [d] [1, 3] dioxin - 4 – one (Ⅹ) was synthesized efficiently, starting from Meldrum's acid and geraniol within five steps. The structures of all intermediates and final compound were characterized by FTIR and 1HNMR. The reaction conditions of intermediates (E) - 3 - (3,7- dimethylocta- 2, 6- dienyloxy)- 3 - oxopropanoic acid (Ⅲ), and (E)- 3, 7- dimethylocta- 2, 6- dienyl- 4 -(2, 2- dimethyl- 6 - oxo - 6H-1, 3- dioxin- 4 - yl)-3- oxobutanoate (Ⅵ) were also optimized to increase yields and lower down expenses, so as to form a more practical synthetic process. The mechanism of key cascade reaction was explained as that the intermediates (E) - 3, 7- dimethylocta- 2, 6- dienyl 2- (2- (2, 2- dimethyl- 6 - oxo- 6H- 1, 3- dioxin- 4 - yl) acetyl) - 3 - oxo- 5 - phenylpentanoate (Ⅸ) underwent tandem Carroll rearrangement twice, decarboxylation, intramolecular Aldol condensation and final dehydration followed by aromatization to generate key intermediate Ⅹ in one pot. The success of Ⅹ synthesis is believed to play an important role in the total synthesis of Amorfrutin B.

Abstract:In this study, the target product 2-fluorocyclopropane carboxylic acid has been prepared from allyl alcohol in five steps. First, allyl alcohol was protected by benzyl group, then after cyclization, benzyl group was removed, followed by debromination and oxidation, the title compound has been synthesized with overall yield of 35.3%.The characterization methods of 1HNMR and MS were applied to confirm the structures of the intermediates and the final product. Comparing to the reaction conditions of each step, optimal conditions were that: In the cyclization reaction, n(allybenzyl ether) : n(dibromofluoromethane) = 1:1.2 and benzyl triethylammonium chloride was used as phase transfer catalyst; zinc powder was used as reducing agent at 70℃; the best solvent of oxidation was a mixed solvent of acetone and water (volume ratio 4:1).

Abstract:3,6-Diaminocarbazole derivatives were synthesized and their structures were confirmed by 1H NMR, 13C NMR and ESI-MS. Their DNA binding properties were investigated by UV-Vis, fluorescence and circular dischroism (CD) spectroscopies and thermal denaturation experiment. Results show that all the 3,6-Diaminocarbazole derivatives are to intercalate into and can acrt as intercalating agent of Ct-DNA.