Abstract:In this paper, ethyl-bridged periodic mesoporous organosilica (PMO) is modified with β-Cyclodextrin (β-CD) using “grafting” method. As a contrast, β-CD modified mesoporous silicas SBA-15 is synthetized by the same method. Functionalized mesoporous PMO materials was characterized by Fourier transform infrared (FTIR) spectroscopy, high-resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (XRD), nitrogen adsorption–desorption measurements and thermogravimetric analysis (TGA). The adsorption properties of the pollutants in water, phenylamine and p-benzenediol, are investigated. For β-CD modified ethyl-bridged periodic mesoporous organosilica (PMO-CD), the results show that the adsorption quantity of phenylamine was 1.54 mg/g, which was reduced due to the β-CD modification comparing with PMO. But the adsorption quantity of p-benzenediol was 12.94 mg/g, which was improved greatly. Therefore, PMO-CD has the potential applications in the treatment of the water pollutants.

Abstract:CuO-ZnO/Al2O3 catalysts modified with magnesium oxide and boron oxide were prepared by impregnation．XRD，XPS，BET and TPR methods were used to characterize the distribution and chemical configuration of CuO impregnated on the catalyst．The results show that the surface area of catalysts increased with boron oxide added，and that boron oxide acted as structural promoter and electron promoter in CuO-ZnO/Al2O3 catalysts．Boron oxide could modify the interaction between copper oxide and the supporter，which is conducive to the disperse of copper oxide and stability of Cu species in defect of electron．The disperse of copper oxide on the catalyst increased with magnesium oxide added. With a weight loading of 6% of CuO in the catalyst which modified with boron oxide the conversion rate of glycerol was up to 100%，whereas the selectivity for 1，2-propanediol was over 94%．

Abstract:Using cis-1, 2-cyclohexanedicarboxylic anhydride as raw material, trans-1, 2-cyclohexanedicarboxylic acid was obtained by cis-trans isomerization, then, (1R, 2R)-(-)-cyclohexanedicarboxylic acid was prepared via a two-step process of the chemical resolution and acidification by employing R-(+)-alpha-methylbenzylamine as resolving agent. The effects of the reaction conditions, including the type of catalyst, reaction temperature and reaction time, on the content of trans-1, 2-cyclohexanedicarboxylic acid were investigated, and the effects of the type and amount of solvent on the chiral resolution were also studied. The results show that the optimal reaction conditions of the synthesis of trans-1, 2-cyclohexanedicarboxylic acid were found as follows: sulfuric acid as reaction catalyst, the reaction temperature was maintained above 120 °C and the optimal reaction time was 12 h. The yield of trans-1, 2-cyclohexanedicarboxylic acid was approximately 80% under such optimal conditions. Detected by 1H NMR, the content of trans-1, 2-cyclohexanedicarboxylic acid was 99.3%. Using R-(+)-alpha-methyl benzylamine as resolving agent, the yield of (1R, 2R)-(-)-cyclohexanedicarboxylic acid ammonium salt was approximately 38%. The reaction conditions have been optimized as follows: anhydrous methanol as the reaction solvent, n (trans-1, 2-cyclohexanedicarboxylic acid) ∶ n (R-(+)-alpha-methyl benzylamine) = 1 ∶ 1, and W (trans-1, 2-cyclohexane dicarboxylic acid) ∶ V (methanol) = 1 ∶ 3. Detected by chiral HPLC, the ee value of the target compound was 98.48%.

Abstract:A low cost superabsorbent resin, PWR-g-PAA/PGS, based on the potato waste residue (PWR, particle size>180 mesh) as the source of cellulose and starch, was prepared by free radical graft copolymerization of partly-neutralized acrylic acid (AA) on the chain of PWR mixed with palygorskite (PGS) in aqueous solution. The copolymerization was carried out using N, N?methylene double acrylamide (MBA) as cross-linking agent and potassium persulfate (KSB) as initiator. The morphology, structure and thermal stability of the polymers were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Thermo-gravimetric analysis (TGA). The water-absorption capability of the polymers was also determined. The results showed that the superabsorbent resin bears the maximum absorption amount of 41.0 g/g for 0.9% NaCl solution, 136.0 g/g for tap water, 538.6 g/g for distilled water. Water retention rate was 96.1%, Gel strength was 11.3 kPa when the total adding amount of palygorskite and potato waste residue accounts for 17.5% in PWR-g-PAA/PGS. The swelling dynamics model of the resin was non-Fickon diffusion.

Abstract:The volatile oil from the medicinal part of Adhatoda vasica Nees was separately prepared by steam distillation methods. The chemical components were analyzed by GC-MS and mass spectral library (NIST08.L, Wiley 275.L) with the area normali-zation method to determine the relative percentage content of each component. 202 peaks were found in the total ion chromatography graph with 51 compounds identified which accounted for 47.83% of the total essential oil. This result showed that there were abundant types of chemical constituents in the volatile oil from the medicinal part of Adhatoda vasica Nees. Investigation of the chemical constituents of Adhatoda vasica Nees may provide some references for the study of its biological activity material base.

Abstract:4-fluorophthalimide is an important intermediate for fluorophthalocyanines, but it has not been large-scale commercial produced and the price is high.　4-fluorophthalimide was synthesized with 4-nitrophthalimide by Balz-Schieman method in this paper. The relationship between yield of the diazotization and fluoroboric acid was investigated and the yield could reach 89.23%. The effect of reaction conditions, such as reaction mode, feeding mode, catalyst, reaction time and temperature, on the yield of the thermal decomposition were also investigated and the yield could reach 43.35％. Compared with the way using 4-fluorophthalic anhydride as raw materials, the method reported in this paper reduced cost a lot and is applicable for industrial production.

Abstract:Cobalt-based composite aerogel was synthesized by sol-gel process and CO2 supercritical drying. The morphology of aerogel was evaluated by field-emmision scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM), which suggest that the aerogel was made up of 3-D networks and the skeletal was composed of cobalt oxide colloidal particles with amorphous carbon. The N2 adsorption/desorption shows that the aerogel has high BET surface area of 177 m?g, average pore diameter about 4nm, which means the aerogel possesses the typical characteristic of mesopore. Then cobalt-based composite aerogel was annealed, and the crystal structure of Co3O4 aerogel was investigated by the XRD patterns, The N2 adsorption/desorption showed the aerogel with surface area about 54m2/g and the distribution of pore-diameter around 7nm.

Abstract:Sucrose stearate- maleate (Sucrose stearate- maleate, MSS) containing anion groups were designed and prepared by sucrose stearate (SSE) with maleic anhydride, to overcome the shortcomings of sucrose esters such as low solubility and, which inhibits its emulsifying properties, particularly in the acidic region and in the presence of salt. The structure of the products were correct by 1H NMR and ESI-MS. The results indicated that anionic modified MSS exhibited remarkably higher solubility and emulsifying properties than SE, especially in the acidic region and in the presence of NaCl, and MSS had excellent stability in hard water (5 level).

Abstract:Three kinds of Schiff base nickel metal complexes: NiL1[N,N’-Bis(2-hydroxy-3-methoxybenzaldehyde)-1,2-ethylenediamine Ni(Ⅱ)], NiL2[N,N’-Bis(3,5-di-tert-butylsalicylidene)-1,2-diaminobenzeneNi(Ⅱ)], NiL3[(1S,2S)-N,N’-Bis(salicylidene)-1,2-diphenylethylenediamine Ni(Ⅱ)] were synthesized and NiL3 was determined by 1H NMR and X-ray diffraction studies. Using NiL1 as catalyst to select the appropriate bulk ring-opening polymerization conditions of L-LA(L-lactide) by single factor analysis, comparison the catalytic polymerization effect of NiL1, NiL2 and NiL3 with different ligands structure features. Structural comparisons revealed that: electron donating methoxy in the catalyst ligand structure was propitious to improve the catalyst activity; steric effect around the metal activity centre of ligand structure was propitious to have polylactide polymers with narrow molecular weight distributions.

Abstract:Four new bifunctional light stabilizers (Ⅱa, Ⅱb,Ⅱc,Ⅱd)were synthesized from the intermediates 2-(2′,4′-dihydroxylphenyl)-2H- benzotriazole and 5-chloro-2-(2′,4′-dihydroxylphenyl)-2H- benzotriazole by the reactions of etherization with ethyl bromoacetate and then esterification with 2,2,6,6,-tetramethylpiperidine or 1,2,2,6,6-pentamethylpiperidine.The yields were 57.5%、59.1%、56.0% and 54.4%,respectively. The structures were characterized by means of 1HNMR and MS.Their ultraviolet absorptions were investigated .the results show that they have stong absorption in 270-400nm.The maximum molar absorption coefficients(εmax?04 )was 2.3610,2.5697,2.4238 and 2.5342 respectivly. Two intermediates were prepared from resorcinol and o-nitroaniline or o-nitro-p-chloroaniline.

Abstract:In this paper, the synergies of several smoke suppressants are studied. Herein, both main group components and sub-group components are investigated, including Mg(OH)2, Sb2O3, ferrocene, Cu2O. The experiments are designed following the orthogonal design, 4 factors and 3 levels. Nine samples are prepared. Cone calorimeter is used to characterize the smoking performance of the flame-retardant intumescent coatings. Results shows that, when the quality percentage of Mg(OH)2, Sb2O3, ferrocene, Cu2O are 2%, 1%, 2%, 1.5%, the smoke amount of intumescent coatings is minimum. At this point, the cooperation of smoke suppressants meets the best. While comparing to the original intumescent coatings, the total smoke rate decrease 14 %.

Abstract:Bola amphiphiles (ArN-n-NAr, n = 4, 6, 8, 10) with quaternary ammonium headgroups have been synthesized. Results show considerable enhancement in the efficiency (C20) and the effectiveness (cmc) in surface tension reduction as well as the ability of micelle formation (cmc) in the mixed aqueous solutions. The minimum C20 value (0.076 mmol/L(n=4), 0.048 mmol/L(n=6), 0.046 mmol/L(n=8) and 0.026 mmol/L(n=10)) was obtained at 1=0.33 (1 represents the molar fraction of ArN-n-NAr) in the mixed aqueous solution. Compared with the pure SDS solution, the cmc of the mixed systems show significant decrease. For the ArN-10-NAr/SDS system, the cmc was decreased more than 9 times (from 2.40 mmol/L to 0.26 mmol/L). The length of ArN-n-NAr spacer in mixed solution was 0.635 nm (n=4), 0.889 nm (n=6), 1.143 nm (n=8) and 1.397 nm (n=10). The outer surface of the mixed adsorption layer at the air/water interface was totally composed by SDS while ArN-n-NAr was arranged at the sublayer neighboring the outside. The ArN-n-NAr molecules adopted lying (for n=4, 6, 8) or perpendicular (for n=10) pattern according to the spacer length between the two headgroups of Bola amphiphiles.

Abstract:Column chromatographic technique was used for the isolation and purification of the chemical constituents of the n-butanol portion and the petroleum ether portion from Elatostema duyunens.,18 compounds are separated, and 10 compounds were identified by MS and NMR data analysis, Quereetin(1), Quercetin-3-O-β-D-galactoside(2), Quercetin-3-O-β-D-glucoside(3), Kaempferol(4), Kaempferol 3-O-β-D-glucoside(5), Oleanic acid(6), β-sitosterol(7), Ursolic acid(8), stigmasterol(9), and n-pentacosane(10), respectively.

Abstract:Four organic dyes (TD1, TD2, TD3 and TD4) were synthesized which contained triphenylamine (TPA) moieties as electron donors and cyanoacrylic acid moieties as electron acceptors, ethenyl thiophene or ethenyl bithiophene/ alkyl bithiophene as π-conjugated linker. The structures of the molecules were characterized by IR, NMR and MS. The effects of the length of the π-conjugated unit and the alkyl chain on the photo-physical, electrochemical and photovoltaic properties. The results indicated that both short-circuit photocurrent density and open-circuit photovoltage have been remarkably improved by the alkyl-substituent, by which high PCE was obtained. TD3 dye with hexyl-substituted bithiophene as π-conjugated unit, exhibited a satisfied efficiency of 6.78%, which reached ～88.7% of an N719-based DSSCs (7.64%) fabricated and measured under the same conditions.

Abstract:Isatin Schiff bases were introduced into diethylenetriamine pentaacetic(DTPA) by acylation reaction，and their paramagnetic GdIII, MnII and FeIII coordination complexes were reported.The structures of the new compounds were established by IR, 1H NMR, ICP-AES and elemental analysis in certain cases.The in vitro studies proved that the r1 of the GdIII,MnII complexes was higher than the clinical magnetic resonance imaging contrast agent Gd-DTPA.

Abstract:Cholesterol modified alginate (CSAD) was prepared by DCC/DMAP covalent attachment of hydrophobic cholesterol onto the nature polysaccharide alginate. And the nanocapsules loaded cyhalothrins were obtained by emulsification method. The structure and hydrophobic properties of the alginate derivative and the morphology and release properties of the nanocapsules were characterized by means of Fourier transform infrared spectroscopy (FTIR), 1H Nuclear Magnetic Resonance (1H NMR), fluorescence spectrum, dynamic light scattering, transmission electron microscopy (TEM) and release studies. Experimental results showed that the degree of substitutions of CSAD were 5.3%~7.9% and their critical aggregation concentration were reduced from 1.23 mg/L to 0.26~0.63mg/L. With increasing degree of substitution, the hydrophobic group increased and the critical aggregation concentration reduced. The d50 of the drug-loaded nanocapsules were 576.4 ?7.4nm, and the Zeta potential value of drug-loaded nanocapsules were -32.3 ?0.6mV, which could exhibit excellent stability in aqueous solution. Compared with conventional microemulsions, the hydrogen bonds were key to CSAD to possess the Slow-Release properties.

Abstract:In the paper, β-CD has been acidylated by 2-Bromoisobutyryl bromide to synthesize macromolecular initiator β-CD-BIBB. Then cationic star polymers have been prepared via ATRP by using AM and DMAEMA as comonomers, β-CD-BIBB as macromolecular initiator, bpy as complexant and CuBr as catalytic. FT-IR , 1H-NMR, DSC and TG were used to characterize initiator and cationic star polymer.

Abstract:9,10,12,13-Tetrahydroxyl stearic acid (THSA) was synthesized from natural linoleic acid by oxidation and hydrolysis, and the molecular structure was identified by FT-IR, ESI-MS and 1H-NMR. Sodium tetrahydroxyl stearate (STHS) thus was prepared from THSA by saponification, and Krafft point, calcium ion stability, lime soap dispersant requirement, surface tension, critical micelle concentration and foam properties of THSA were investigated and compared with those of sodium soaps of linoleic acid, oleic acid and stearic acid. The experimental results showed that STHS displayed unique lime soap dispersing power and calcium ion stability in hard water, and better solubility in cold water and at neutral pH condition superior to all the other tested sodium soaps. The polyhydroxyl characteristics give STHS the power to easily dissolve not only in hard water and at neutral pH condition against ordinary sodium soaps of all other fatty acids, but also in cold water against sodium soaps of saturated fatty acids, and inoxidizability against sodium soaps of unsaturated fatty acids. Therefore, STHS has the potential to act as the new soap-base surfactant formulating of neutral soaps, cold water soaps and hard water soaps.

Abstract:Cu/ZnO/Al2O3/ZrO2 catalyst used in diethanolamine dehydrogenation was synthesized via a coprecipitation process with copper nitrate, zinc nitrate, aluminum nitrate and zirconium oxynitrate as reactants, using sodium hydroxide as precipitation agent, and various kinds of copper-based catalyst were characterized by means of physical adsorption (BET) and X-ray diffraction (XRD), and the influence of different ratio of ZnO and Al2O3 in the catalyst were discussed. The results show that, Cu/ZnO/Al2O3/ZrO2 catalyst which add ZnO and Al2O3 simultaneously have a big specific surface area, and have an amorphous structure. The conversion of diethanolamine was up to 100%, the yield of iminodiacetic acid was 95.61% under the suitable catalyst conditions of 30% sodium hydroxide, temperature 160 ℃， pressure 1.0 MPa.

Abstract:The different loading catalysts of 12-tungstophosphoric acid/SBA-15 were prepared by in-situ method.The structure and properties of the catalysts were characterized by FT-IR spectroscopy、TEM、X-ray diffraction、31P NMR and N2 adsorption-desorption.The results show that the long range order structure on the SBA-15 material is decreased with the improvement of loading. However, the structure of SBA-15 has certain destruction when loading up to 33.3%. The 12-tungstophoaphoric acid highly dispersed in hole of SBA-15 still keeps the Keggin structure, and has certain chemical interaction with surface hydroxy for SBA-15.The catalytic properties of synthetic fruction show that HPW/SBA-15 catalyst have high catalytic activity and selectivity, and show excellent reusabity.

Abstract:The resolution of racemic 5-hydroxy-8-undecenoic acid δ-lactone (Jasmolactone) by packed column supercritical fluid chromatography (pSFC) was studied. First method development was carried out in an analytical scale. The chiral stationary phases (CSPs) of Chiralpak AD-H, Chiralcel OB-H, Chiralcel OD-H, and Chiralcel OJ-H, and the modifier solvents of methanol, ethanol, isopropanol and acetonitrile were screened. The parameters of column temperature, column pressure, content of modifier solvent in mobile phase, and flow rate of mobile phase were systematically investigated by single-factor and orthogonal experiments. The optimum conditions found were the CSP of Chiralcel OD-H, column temperature 31 ℃, column pressure 12 MPa, 2 % v/v modifier solvent of acetronile-methanol (7:3, v/v) in the mobile phase, and the flow rate of mobile phase in 1.0 mL/min, whereby resolution factor (Rs) achieved is 2.00. Then preparative separation was performed in the optimum conditions at a flow rate of 8 mL/min, total of 6.6 mg enantiomers were obtained from 10 mg racemers in 320 min in the recovery of 66 % and an optical purity of 100 % e. e. The present work demonstrated that resolution by pSFC was a good choice due to high efficiency when some micrograms of enantiomeric 5-hydroxy-8-undecenoic acid δ-lactone are to be prepared.

Abstract:Absorption effects of a new microemulsion absorbent on waste gas containing toluene have been studied. An oil-in-water (O/W) microemulsion was prepared by the mixture of biodiesel, water, tween-80 and n-butanol. The optimum conditions for preparation of microemulsions are as following: the mass ratio of tween-80 to n-butylalcohol is 2:1 and the HLB value is 12.33 at room temperature. The absorption results show that the removal efficiency of microemulsions for toluene can reach 91.14%. Results of the regeneration experiment indicate that the secondary recycled absorbent still have a good performance on toluene absorbing and the absorption rate is as high as 83.85%.

Abstract:Abstract：Two double SO3H-functionlized Br鴑sted acidic ionic liquids (BAILs-1-2) were synthesized by using commericial available aliphatic polyamine tetramethylethylene diamaine, pentamethyldiethylenetriamine and 1,4-propanesultone as the sources chemicals via quaternarization and acidification two step reaction, their structure were confirmed by FT-IR and 1H NMP, their Hammett acidic functions were determinated using 4-nitroanilins as indicator by UV spectrum, two kind ionic liquids all showed stronger acidity than H2SO4 BAILs1-2 acted as catalyst and medium together with [bmim]Br for synthesis of sorbitol transparent nucleating agent was studied, the results indicate that the reaction could carried out smoothly under homogeneous conditions. Upon the optimized conditions，the amount ofBAILs1or 2 was 15mol%(based on aldehyde), the mass ratio of sorbitol/[bmim]Br was 4:1, the reaction could completed at 60℃ within two hour in isolated yields of 67～75%with high purity(melting range ≤5℃) .Ionic liquids could be recovered after removal of water in vacuum and washed with diether and reused three times without significant loss in their catalytic activity.

Abstract:The liquid-phase Beckman rearrangement of cyclohexanone oxime to ε-caprolactam with TsCl(p-toluenesulfonyl chloride) as catalyst and acetonitrile as solvent has been studied. The effects of catalyst, reaction temperature, reaction time, the dosage of catalyst, the amount of catalyst on the yield of ε-caprolactam were investigated. Under the optimized reaction conditions, cyclohexanone oxime 2.0g, TsCl 1.5g, solvent acetonitrile 20mL, reaction temperature 60℃, reaction time 2.5h, The conversion of oxime and the selectivity to ε-caprolactam were 98.4% and 93.6%, respectively. This method has an advantage of mild reaction conditions and Solvent acetonitrile can be reused.