Abstract:3,4-diarylpyrazole derivatives were synthesized by puerarin and its alkylated derivatives through one-pot operation with hydrazine hydrate. The synthetic conditions of 3,4-diarylpyrazole derivatives were optimized, using ethanol as solvent, reating at 85 ℃ for 2 h, the yield keeps over 70%. The structures of these compounds were characterized by IR, 1H NMR,13C NMR spectra and elemental analysis. Fungicidal activities of these compounds were also evaluaed．Most of them exhibit good activities. Compound Ⅲa, Ⅲc, Ⅲf have similar or more evident antibacterial effects than that of fluconazole.

Abstract:In this paper, monodisperse polystyrene microspheres were prepared in a dispersion polymerization process. Then polystyrene microspheres were used as seeds, butyl phthalate as swelling agent, styrene as monomer, divinylbenzene as crosslinker, toluene as porogen, by using the method of seed swelling polymerization successfully made a narrow particle size distribution of porous high crosslinked polystyrene - divinylbenzene microspheres (PS - DVB). And porous microspheres were used as reversed-phase chromatographic packing matrix, and study the influence of the amount of crosslinker and porogen on the morphology of microspheres, particle size and pore structure parameters. The results show that the microspheres ball roundness, narrow particle size distribution, controllable pore structure, suitable for high performance liquid chromatography (HPLC) packings.

Abstract:Five carbazole-based fluorescent molecules were incorporated into mesoporous molecular sieve MCM-41 by impregnation method. Their photophysical properties were investigated systematically via XRD, UV-vis absorption and emission spectra in both solution and solid states. The absorption and emission properties of these fluorescent materials could be effectively changed by loading with MCM-41. These carbazole-based fluorescent molecules dispersed in the MCM-41 mesoporous channels and no obvious mass losses at the range of 100 ~ 350 oC, which indicate that the thermal stabilities of these materials are improved. Meanwhile, these hybrid materials show significant blue-shifts in their UV-vis absorption and fluorescent spectra compared to the fluorescent molecules in solid state. These hybrid materials can be utilized as efficient blue fluorescent materials (λemmax = 401 ~ 435 nm).

Abstract:Abstract: The C60 arginine was prepared with C60 and arginine as the raw material. The C60 arginine lead salt was synthesized by the reaction of C60 arginine with lead nitrate, and characterized by FT-IR, MS, UV-Vis, AAS, XRD, XPS and Elemental analysis as a new combustion catalyst. The thermal stability of C60 arginine lead salt was also carried out by DSC and TG-DTG under air atmosphere, and two discrete regions of thermal decomposition can be observed in the DSC curve at 285℃ and 435℃ respectively. C60 arginine lead salt has two-steps weight loss, overall weight-loss was 57.68% in the TG-DTG curve, which shows good thermal stability.

Abstract:PolyoxyethylenePolyoxyethylene-polyoxypropylene-polyoxyethylene (P123) was used as a template and 1,3,5-trimethylbenzene (TMB) was used as a swelling agent. A mesoporous material was synthesized using 1,2-bis(triethoxysilyl)ethane(hexaethoxydisilethylene) (BETS) and (3-cyanopropyl)triethoxysilane (CTES), and α-glucosidase was successfully immobilized on this material. The effects of 5 organic solvents on the immobilized enzyme were then investigated. Over 50 h, the following residualstable residual enzyme activities were observed: 90% in 25% ethanol, 45% in 25% methanol, 40% in 25% isopropanol, 25% in 25% acetone and 42% in 10% acetonitrile. Although there are certain limitations for α-glucosidase immobilized on mesoporous materials in organic solvents, some activity remained. Therefore, mesoporous materials are expected to be utilized to immobilize α-glucosidase in subsequent research and industrial applications.

Abstract:Surfactant complexes of octanoyl alanine [CH3(CH2)6CONHCH(CH3)COOH] containing magnesium, calcium and zinc ions, respectively, were synthesized by the reactions of octanoyl alaninate ligand with hydroxide of magnesium, calcium or zinc under different molar ratio conditions in this study. The solubility of the complex in the pure solvent and water/organic solvent was tested. The results showed that the complexes of magnesium and calcium had a high solubility in most of the pure solvent and water/organic solvent, whereas the solubility of complex of zinc was very little in the pure solvent and water/organic solvent. Furthermore，the aggregation behavior of the above surfactant complexes in the pure solvent and water/organic solvent were analyzed by nuclear magnetic resonance (NMR) spectrometry, electrical conductivity, vapor pressure depression (VPO) and FT-IR. The results showed that the complexes of Mg(oct-ala)2, Ca(oct-ala)2 and Zn(oct-ala)2 were easy to aggregate and form Reverse micelle in the pure solvent and water/organic solvent, which is due to adsorbing water.

Abstract:The long-chain alkyl quaternary ammonium hydroxide was synthesized by the hydrolysis and continuous ion membrane electrolysis of alkyltrimethylammonium methylcarbonate; and the alkyltrimethylammonium methylcarbonate was prepared by the reaction of alkyl tertiary amine and dimethyl carbonate. Take tetradecyltrimethylammonium hydroxide as an example, the influences of the electrolysis reaction temperature, current density, the concentration of anolyte and the discharging concentration of catholyte on the current efficiency of electrolysis reaction were investigated. And the optimized condition was: reaction temperature 65 ℃, current density 450 A/m2, the concentration of anolyte 1.4 mol/L, the discharging concentration of catholyte 0.15 mol/L. Under the optimized conditions, the current efficiency could reach 67%. The structure of the products were characterized by 1H-NMR and IR, the results showed that long-chain alkyl quaternary ammonium hydroxides were synthesized successfully. The surface activity, pH, wetting and foaming properties of long-chain alkyl quaternary ammonium hydroxides were measured.

Abstract:TiO2 nano-structured fibers with trace Sn4 -doped (Sn4 /TiO2) were prepared via a dipping-thermal conversion method (called as two-steps method) by using absorbent cotton fiber as the template and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), resolution transmission electron microscopy (TEM), ultraviolet-visible spectroscopy (UV-Vis ) techniques. Under the irradiation of Hg and Xe lamps (Simulated sunlight), the degradation of methylene blue (MB) on the samples was used as the model reaction to investigate their photocatalytic property. The results show that Sn4 /TiO2 nano-structured fibers with trace Sn4 are prepared via the two-steps method, doped Sn4 ions are well-distributed in TiO2 lattice and make the absorption edge of TiO2 red-shift and remarkably increase the intensity of the light adsorption in the range of UV to visible. And under Hg and Xe lamps, as-prepared samples show good photocatalytic activity for the degradation of MB solution. It is important that the activity of the samples Sn4 /TiO2-0.030% is 4.5 times as TiO2 under Xe lamp (Simulated sunlight) but 2.7 times as TiO2 under Hg lamp (UV light). Good photocatalytic property of Sn4 /TiO2 can be ascribed to multi-structure and the increase of active centers of TiO2 material and doped energy level between valence and conduction bands of TiO2 due to doping Sn4 ions in TiO2. In addition, the photocatalytic degradation of MB solution follows first-order kinetic behavoir well on the samples.

Abstract:The volatile flavor components in Fresh Yunnan Truffle were extracted by solid-phase micro extraction (SPME) or simultaneous distillation extraction (SDE) and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 107 volatile compounds were identified in Yunnan Truffle, Including 5hydrocarbons, 14aldehydes, 13ketones, 5acids, 4 esters, 13 alcohols and phenols, 2 ethers, 32 sulfur-containing compounds or nitrogen-containing compounds or heterocyclic compounds. Aldehydes, alcohols and phenols, sulfur-containing compounds，nitrogen-containing compounds，and heterocyclic compounds may have an important influence on the flavor of Yunnan Truffle.

Abstract:Three kinds of zinc complexes of biuret with different anions and crystallization water were synthesized by methanol solution reactions with zinc nitrate, zinc acetate or zinc sulfate and biuret as starting materials. The composition and structures of the complexes were characterized by means of EDTA titration, elemental analyses, FTIR spectra, and X-ray powder diffraction. The thermal decomposition of the complexes was studied. The experimental results showed that the zinc ions in the complexes were all four-coordinated by carbonyl oxygen atoms from the biuret ligands. The thermal decomposition processes of the zinc complexes included dehydration, oxidation and pyrolysis of the ligand and anions, and the final residue was zinc oxide.

Abstract:Starch granule was extracted from grain amaranth. Then hydrophobic modified starch granule (OSAS) was prepared by modifying starch granule with octenyl succinic anhydride. The structure of OSAS was characterized by FT-IR and XRD diffraction pattern. The hydrophobic property of the modified starch granules increased with the increasing of degree of substitution （DS）. Pickering emulsion was prepared by using liquid paraffin as the oil phase and starch granules as the sole emulsifier. When the V(oil):V(water) was 1:1, OSAS granule with DS of 0.089 concentration was above 0.5wt%, the stable emulsion could be formed. The size of droplets decreased and the stability of emulsions enhanced with the increasing of OSAS granule concentration.

Abstract:Phosphono Scale Inhibitor (PMAAAP) was synthesized through polymerization reaction using maleic anhydride, acrylic acid and sodium hypophosphite as raw materials. The scale inhibition performance of PMAAAP（Phosphono Maleic Anhydride Acrylic Acid Polymer, PMAAAP） under different conditions was investigated. The crystal structure of calcium precipitation was analyzed by XRD and shape characteristic of calcium precipitation was revealed by SEM. The result showed that the maxium calcium carbonate scale inhibition rate is 100% and the maxium calcium phosphate scale inhibition rate is 60.87% under the conditions of dosage is 25 mg/L, pH is 8 and water temperature from 30℃ to 45℃. XRD revealed that the Calcite structure in Calcium carbonate crystal decreased and the unstable vaterite structure appeared. SEM revealed that shape characteristic of calcium carbonate present amorphous. Determination the solution conductivity showed PMAAAP obviously inhibit the formation of calcium carbonate deposits. PMAAAP as an efficient low phosphorus scale inhibitor could be used in industrial cooling water system.

Abstract:Three phosphorus-nitrogen DOPO type flame retardants for epoxy resin were synthesized through two steps from p-phenylenediamine, 4-fluorobenzaldehyde, 4-nitrobenzaldehyde, 4-methoxybenzaldehyde and 9,10-dihydro-9-oxa-10-phosphoryl phenanthrene-10-oxide (DOPO). The intermediates and the target compounds were characterized by 1H NMR and FTIR. The obtained retardant and 4,4'-methylenedianiline were added to EP and transparent cured epoxy resin were obtained. The flame retardant performance of the cured products was investigated, respectively. The results indicated that with the increase of phosphorus content in the cured products, their flame-retardant performance increase. When the phosphorus content reached 1.00 w%, the cured EP can meet UL 94 V-0 class. The limiting oxygen index of BNP-DOPOD/DDM/EP was determined to be 37.0 as the highest among them.

Abstract:Di(2-propyheptyl)-1,2-Cyclohexane Dicarboxylate (DPHCH) was synthesized via esterification between hexahydrophthalic anhydride (HHPA) with 2-propylheptanol by using tetrabutyl titanate as a catalyst. The effects of reaction parameters on esterification were studied by investigating the temperature, reaction time, molar ratio of 2-propylheptanol-to-HHPA, and catalyst content. The results of experiments confirmed the best reaction conditions of esterification as follows: molar ratio of 2-propyl heptanol to HHPA 2.8:1, the reaction temperature was 200℃ and the reaction time was 3 h, amount of catalyst 1.5 %( based on the mass of acid). Furthermore, the esterification yield under present condition was 99.49 % and a colorless transparent oily liquid was obtained. Functional group analysis was conducted by using FTIR and 1H-NMR spectroscopy. weight loss on heating and TG were measured PVC compounds after addition of the synthesized plasticizer DPHCH presented similar plasticizing performance with DEHCH, DOP and DINCH, as demonstrated by comparisons of the results of mechanical properties, weight loss on heating and TG tests obtained for plasticized PVC compounds, indicating its great value in industrial development.

Abstract:The catalytic performances of 3-Hydroxy-2,2-dimethylpropanal hydrogenation to neopentyl glycol over Cu/SiO2 catalysts were tested in a fixed-bed plug flow reactor. A new type of Cu/SiO2 catalysts modified by four different promoters (Zn, Ni, Mn, Co) were prepared by homogeneous precipitation method. The results showed that the addition of Co promoter on Cu/SiO2 catalysts could promote dispersion of the active component efficiently and stabilize the active center of the catalysts. Evaluation test on activity of the catalysts showed that HPA conversion greater than 99.6% and selectivity to neopentyl glycol about 100% could be obtained under 0.10~0.62 Mpa pressure, temperature of 90℃, mass fraction of HPA at 11.24%, liquid hourly space velocity of 1.4 h-1 and H2/HPA molar ratio of 4 to 1. The unmodified catalyst and the newly prepared ones were characterized by XRD, BET and TG analysis. XRD characterization showed that Co promoter was favorable for the dispersion of CuO, and enhanced the interaction between active component and carrier. Therefore the catalytic activity of the modified catalysts was obviously higher than the original.

Abstract:Abstract: Through sodium sulfite and ammonium persulfate (mass ratio is 1:2) as the initiator,and acrylamide (AM), 2-acrylamide-2-methyl propane sulfonic acid (AMPS), dimethyl diallyl ammonium chloride (DMDAAC), and allyl pyrrolidone (NVP) as the monomers,getting a kind of performant polymer PAADN,which can be used in the drilling mud.Bying studying the polymer synthesis,we got the optimum synthesis condition: monomer ratio of m(AM) : m(AMPS) : m(DMDAAC) : m(NVP) is 51:40:6:3, total monomers concentration is 20%, the reaction temperature is 55 ℃, pH is 7, dosage of initiator is 0.5%, the reaction time is 5 h.Evaluating the performance of the polymer showed that the infrared spectrum characteristic peaks have not shown double bonds peak，and it contains every monomer peak which we can conclude that all monomers take part in reaction; thermogravimetric analysis results showed that the polymer thermal stability is good, and it can also resist 326.5 ℃; Putting polymer in fresh water mud, salt water mud and artificial simulated seawater mud ,all of muds showing good preference.

Abstract:A controllable synthesis was developed to prepare mono-estolide esters from α-hydroxyl fatty acids in order to improve the uncontrollability of estolide formation from unsaturated fatty acids. 2-Ethylhexyl α-hydroxyl dodecanoate (EHHD) was prepared in the first step esterification of α-hydroxyl dodecanoic acid with 2-ethylhexanol, and the target product 2-ethylhexyl α-dodecanoyloxy dodecanoate (EHDD) was synthesized in the second step esterification of EHHD with dodecanoic acid. The products were identified by FTIR, 1H NMR and ESI-MS and the final product was verified as a estolide 2-ethylhexyl ester with 32 carbon atoms and a character of EN (estolide number) = 1. The melting point of EHDD is -45.34 ℃ measured by DSC method.

Abstract:Abstract: A high polymer (HP-SRA) was synthesized with diethylene glycol monobutyl ether maleic anhydride ester (MBDEGMA), acrylic acid (AA), 2-acrylamide-2-methyl propane sulfonic acid (AMPS) and polyethylene glycol mono methyl ether acrylate (MPEGAA) by aqueous solution polymerization. The molecular structure of high polymer (HP-SRA) was characterized by Fourier transform infrared spectroscopy (FT-IR), 1H nuclear magnetic resonance (1H-NMR), and relative molecular mass and distribution was analyzed by gel permeation chromatography (GPC), respectively. In the meantime, the shrinkage-reducing performance and other performances in concrete were measured. The results show that the highest Shrinkage ratio of cement mortar, the best fluidity and plasticization of cement paste is in the mole ratio of MPEGAA to MBDEGAA to AA to AMPS as 1∶2.15∶2.15∶1.10. The introduction of the reduced group can improve the shrinkage performance of concrete on the basis of its application performance to don't be affected.

Abstract:Diphenylglycoluril was synthesized by condensation reaction of dibenzoyl from the oxidatetion of benzoin and urea. This study showed that with anhydrous ethanol used as solvent, sodium ethoxide as catalyst, the condensation reaction can be achieved at room temperature, the yield of product was higher , the average was 82% with the molar ratio of 2.5:1of urea and dibenzoyl, the dosage of catalyst 10% of dibenzoyl, 40℃，1.5h. The product was analyzed and characterized by IR、1H NMR、13C NMR and HPLC-MS. The results showed that the product structure was correct, and its pure was 98%. The method has the advantages of convenient operation, low reaction temperature, short reaction time, few catalysts and high yield and so on.

Abstract:In this paper, p-nitrophenyl α-D-mannopyranoside was readily synthesized with D-mannose as starting material by acetylation, Helferich glycosidation and deacetylation. The effect of mole ratio of reactants, temperature, decompression time, reaction time and the amount of catalyst on stereoselectivity and the yield of Helferich glycosidation was investigated through orthogonal experiment. The results show that the highest yield of 72.4% for the optimal α-stereoselectivity of Helferich glycosidation were based on 2.56 mmol of 1,2,3,4,6-Penta-O-acetyl-D-mannopyranose, with the molar ratio of 1,2,3,4,6-Penta-O-acetyl-D-mannopyranose to p-nitrophenol being 1:4, dosage of catalyst SnCl4 being 0.308 mmol, time of decompression and reaction being 80 min and the temperature being 120 ℃.

Abstract:Catalysted by Fe2O3,The synthesis of 1,2-dimethyl-4-tert-butylbenzene was performed with tert-butyl chloride and o-xylene .This new method is friendly to environment,because we didnot use any solvent and the reaction is simply compeleted without any wasts.Then,we studied the essential factors that maybe influence reaction,for example,temperature,time,mole ratio of tert-butylchloride to o-xylene,the amount of catalyst and etc.The results show that at 50 ℃,catalysted by Fe2O3,we can get the target product in 2.5 hours,A catalyst of Fe2O3 ensuring production of 1,2-dimethyl-4-tert-butylbenzene with a 97.77 % yield and selectivity of o-xylene conversion to the target product of 99.48 % was developed。The product of 99.3 % purity（by Gas chromatogram） is confirmed by 1HNMR.

Abstract:2-(1,3-Dioxane-2-yl)-6-methoxyphenol (Ⅲ) was synthesized by 2-hydroxy-3-methoxy benzaldehyde (Ⅰ) with acetalation. 3-(2- (1, 3-Dioxane-2–yl)-6-methoxy) phenoxyl benzaldehyde (Ⅴ) was synthesized by reaction of compounds Ⅲ and 3-bromobenzaldehyde (Ⅳ). Structure characterization of the target compound Ⅴ was made based on 1H-NMR and MS. By changing reaction condition, the optimum reaction conditions for compounds Ⅴ were found as follows: n(Ⅲ): n(Ⅳ): n(K2CO3): n(CuCl) = 1: 1.05: 2: 0.3. Reaction time and yield was 5h and 68.8% respectively under reflux condition, the purity was 98.7％.

Abstract:2-(2-Hydroxyphenyl)-2-oxoacetate(I) is obtained from cyclohexanone and ethyl glyoxylate in two steps. Firstly, the condensation of cyclohexanone and ethyl glyoxylate furnished ethyl 2-hydroxy-2-(2-oxocyclohexyl)acetate(VII), then the final product I was synthesized through the oxidization and aromatization of VII with HIO3-DMSO. The reaction condition of each step was studied. The optimal process condition is that the yield of product VII is up to 65.4% when the catalyst is trifluoroacetic acid and the ratio of glyoxylate ethyl ester and cyclohexanone is 1:10 and the yield of I is 60.0% when HIO3-DMSO was two equivalents of VII. The structure of product I is confirmed by 1H NMR, 13C NMR spectra and MS.

Abstract:In order to reduce the wastewater and improve the quality of the product, crude bisphenol S is purified by mixed solvents system of alcohol-tetrachloroethane or alcohol-anisole. Crude bisphenol S is dissolved in an alcohol. Then active carbon is added with tetrachloroethane or anisole under heating conditions. After a period of time of decolorization, the alcohol is removed by distillation. The high quality bisphenol S is obtained by filtration. The optimum conditions of alcohol – tetrachloroethane system are as follows. Firstly 10g crude bisphenol S is dissolved in 40g isoamyl alcohol. Then 100g tetrachloroethane and 1g active carbon are added under stirring and the whole system is heated under 50~60℃ for 1 hour. The alcohol can be removed from the filtrate by distillation after filtration. High quality bisphenol S can be obtained after the rest of the filtrate being cooled, filtered and dried. The mass fraction and yield of bisphenol S obtained by alcohol-tetrachloroethane are 99.50% and 82% respectively. The optimum conditions of alcohol - anisole system are as follows. Firstly 10g crude bisphenol S is dissolved in 40g isobutanol or isoamylalcohol. Then 60g anisole and 1g active carbon are added under stirring and the whole system is heated for 1 hour. The alcohol can be removed from the filtrate by distillation after filtration. High quality bisphenol S can be obtained after the rest of the filtrate being cooled, filtered and dried. The mass fraction of bisphenol S obtained by alcohol-anisole is more than 99.80%, and the yield of which is about 83%.