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THE COORDINATION ADSORPTION OF AMINES ON CARBOXYL RESIN IN Cu^(2+) FORM FROM NON-AQUEOUS MEDIUM AND DESORPTION WITH ANHYDROUS ELUANT

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Chinese Journal of Polymer Science 2002年第5期20卷 439-444页

作者： Jia-zheng Li Zuo-qing Shi Yun-ge Fan The State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, institute of Polymer Chemistry nankai university, tianjin 300071, china College of Chemical Engineering Hebei university of Technology tianjin 300130 china Polymer Materials for Adsorption and Separation Institute of Polymer Chemistry Nankai University 天津 300071

The adsorption of aniline, N-methylaniline and N,N-dimethylaniline onto carboxyl resin in Cu2+ form from water, ethanol and n-hexane have been studied. The results show that the adsorption affinities from n-hexane are higher than that from water, and nearly zero from ethanol. The separation factors for the adsorption of these three amines from mixed solution were also examined. The results of continuous column operations show that the breakthrough capacity of aniline from n-hexane reaches 90 mg/g dry resin in Cu2+ form, and the amines adsorbed can be stripped with anhydrous ethanol effectively. Adsorption onto carboxyl resin in Cu2+ form from non-aqueous medium and desorption with anhydrous eluant can overcome the run-off of Cu2+ from the resin, and would show potential advantages in the separation of some water-insoluble natural products.

关键词： coordination adsorption adsorption selectivity amine ligand

Crystal Structure of a Novel Phosphorane (C_(30H27N3O12P-4) with Three P-P Bonds

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Chinese Journal of Structural Chemistry 2000年第4期19卷 275-280页

作者： WANG Wen Hu ② WENG Lin Hong LIU Lun Zu (State Key Laboratory of Elemento Organic Chemistry, institute of Elemento Organic Chemistry, nankai university, tianjin 300071, china) 南开大学元素有机化学国家重点实验室天津 30 0 0 71

The first phosphorane 3, C 30H 27N 3O 12P 4, M r =745.43, bearing three P-P bonds, was synthesized and its crystal structure was determined by X ray diffraction method. The crystal data are as follows: colorless crystals, orthorhombic, space group P2 12 12 1, a=9.4387(1), b=18.424(2), c=19.358(2) , V=3366.57(7)  3, D c =1.471Mg/m 3, λ (Mo Kα )=0.71073 , μ (Mo Kα )=0.291mm -1, F(000)=1536, Z =4. The structure was refined to R =0.0598 and wR(F 2 )=0.0758 for 5946 observed reflections [ I>2σ(I )]. The geometry of the P(4) atom is pyramidal, whereas the coordination geometry around the P(1), P(2) and P(3) atoms is a strongly distorted trigonal bipyramid.

关键词： phosphorane P-P bond pyramid trigonal bipyramid

Influence of p-layer on the performance of n-i-p μc-Si:H thin film solar cells

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Science china(Physics,Mechanics & Astronomy) 2010年第11期53卷 2042-2046页

作者： YUAN YuJie 1,2,ZHANG KaiLiang 1,2,WEI Zhen 1,2 & GENG XinHua 3 1 College of Electronics Information Engineering,tianjin university of Technology,tianjin 300384,china 2 tianjin Key Laboratory of Film Electronic and Communication Devices,tianjin university of Technology,tianjin 300384,china 3 institute of Photo-Electronics Thin Film Devices and Technique,nankai university,tianjin 300071,china College of Electronics Information Engineering Tianjin University of Technology Tianjin China tianjin Key Laboratory of Film Electronic and Communication Devices Tianjin University of Technology Tianjin China institute of Photo-Electronics Thin Film Devices and Technique Nankai University Tianjin China

The high pressure radio frequency plasma enhanced chemical vapor deposition (RF-PECVD) process was adopted to prepare the n-i-p microcrystalline silicon solar cells,the influence of p-type layers on the performance of the solar cells was investigated,and the optimum p layer suited to the n-i-p microcrystalline silicon solar cells was *** experimental results demonstrate that the performance of the solar cells can be highly affected by the structural and optical properties of the p-layers,and the performance of solar cells can be greatly improved by optimizing p *** have achieved an initial active-area efficiency of 8.17% (V oc =0.49 V,J sc =24.9 mA/cm 2 ,FF=67%) for the μc-Si:H single-junction n-i-p solar cells and an initial active-area efficiency of 10.93% (V oc =1.31 V,J sc =13.09 mA/cm 2 ,FF=64%) for the a-Si:H/μc-Si:H tandem n-i-p solar cells.

关键词： microcrystalline silicon solar cells quantum confinement effect p-type layers

Synthesis and Molecular Structure of 5, 5-Dimethyl-2- (4' -methoxy)phenyl-1, 3, 2- thiazaphospholidine-4-thione 2-sulfide

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Chinese Journal of Structural Chemistry 2002年第1期21卷 46-50页

作者： DENG Sheng-Loua LIU Dong-Zhia HUANG Jun-Minb CHEN Ru-Yub WENG Lin-Hongb LENG Xue-Bingb ( aSchool of Chemical Engineering, tianjin university, tianjin 300072, china) (binstitute of Elemento-Organic Chemistry, nankai university, tianjin 300071, china) School of Chemical Engineering Tianjin University 天津 300072 institute of Elemento-Organic Chemistry Nankai University 天津 300071

A five-membered phosphoroheterocycle, 5, 5-dimethyl-2-(4 -methoxy)phenyl-1, 3, 2-thiazaphospholidine-4-thione 2-sulfide, has been prepared by the reaction of Lawessons reagent (LR) with -hydroxyl isobutyronitrile, and its crystal structure was determined by X-ray diffraction method. The title compound (C11H14NOPS3) is triclinic with space group P , a= 6.8418 (9), b= 10.5467 (1), c= 11.5670 (2)? = 114.851 (2),β= 100.291 (2),γ= 91.390 (3)? V= 740.7 (2) 3, Z= 2, Dc= 1.360 g/cm3, λ= 0.71073 ? μ(MoK?= 0.59 mm-1, F(000)= 316. The Structure was refined to R= 0.0476, wR= 0.1272 for 2549 unique reflections with I >2σ(I). It contains a phenyl ring and a 5-membered phosphoroheterocycle with the dihedral angle of 87.06 (9)? The five atoms (P (1), N (1), C (1), C (2) and S (2)) of the heterocycle are nearly coplanar. In view of the unit cell it can be concluded that there exists an intermolecular hydrogen bond in the form of Sa┈HN (a: X, Y+1,Z+1). The existence of dpлbond between P (1) and N (1) was found as well as unsaturated property of N (1)C (1) moiety.

关键词： synthesis five-membered phosphoroheterocycle intermolecular hydrogen bond d-pлbond unsaturated property.

RISK ANALYSIS AND MANAGEMENT OF URBAN RAINSTORM WATER LOGGING IN tianjin

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Journal of Hydrodynamics 2006年第5期18卷 552-558页

作者： HAN Su-qin XIE Yi-yang LI Da-ming LI Pei-yan SUN Mei-ling College of Environmental Science and Engineering Nankai University Tianjin 300071 China Tianjin Meteorology Institute Tianjin 300074 China tianjin Meteorology institute Tianjin 300074 China School of Civil Engineering Tianjin University Tianjin 300072 China

The risk analysis of urban rainstorm water logging facing tianjin city by using methods of probability, investigation and numerical simulation was carried out in this article. Firstly, a mathematical model for the urban rainstorm water logging was established on the basis of one- and two-dimensional unsteady flow theory and the technique of non-structural irregular grid division, Secondly, the precipitation over heavy rain was divided into seven grades, the experiential expression of frequency and rain grades was got according to the observed rainfall from May 1918 to October 1998. Thirdly, the mathematical model was used to simulate various rain process according to the features of the rainstorm and the draining rule, based on the simulated maximum water depths, 3 class of disaster extents were established, the disaster risks were mainly in Class Ⅰ and Class Ⅱ, The risk analysis of water logging on traffic were primarily evaluated, and finally, some management and mitigation measures of the urban rainstorm water logging disaster were discussed.

关键词： urban rainstorm water logging mathematical model traffic disaster risk analysis,tianjin

Metallic photonic crystals for terahertz tunable filters

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Science china(Information Sciences) 2012年第1期55卷 72-78页

作者： FAN Fei,CHANG ShengJiang&HOU Yu institute of Modern Optics,nankai university,Key Laboratory of Optical Information Science and Technology,Ministry of Education,tianjin 300071,china institute of Modern Optics Nankai University Key Laboratory of Optical Information Science and Technology Ministry of Education Tianjin China

We have investigated the photonic band gap and transmission properties of metallic photonic crystals(PCs)filled with liquid crystal(LC)in the terahertz region by using the finite element method and the finite-dierence time-domain *** calculations on the LC-filled metallic PC and metallic PC waveguide demonstrated that they can realize low-loss broadband terahertz tunable filters,which have a tunable range of about 110 GHz and extinction ratio larger than 35 ***,the 3 dB bandwidths of the filters keep *** designed filters based on the metallic PC can greatly improve the performances in terms of loss,bandwidth and tunable region compared to those based on the LC-filled dielectric PC.

关键词： terahertz metallic photonic crystals liquid crystals filter

STUDY ON NEW PHOSPHORUS-GERMANIUM COMPOUNDS

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Chinese Chemical Letters 1995年第10期6卷 855-856页

作者： Ru Yu CHEN Lun Zu LIU Zhong Biao ZHANG(institute of Elemento-Organic Chemistry nankai university, tianjin, 300071) nankai Univ Inst Elementoorgan Chem Tianjin 300071 Peoples R China

The spirobicyclic pentacoordinated germanium compounds are synthesized by one pot reaction of diethyl N,N-bis-(2-hydroxyethyl) aminomethyl phosphonate with tetraethoxygermane and Z(OH)(2)(Z = CH2CH2, CH(CH3)CH2, CH(CH...

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NUMERICAL ANALYSIS OF THE PERFORMANCE OF HORIZONTAL AND WAVY SUBSURFACE FLOW CONSTRUCTED WETLANDS

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Journal of Hydrodynamics 2011年第3期23卷 339-347页

作者： WANG Jun HUANG Sui-liang HE Cheng-da NG Chiu-On College of Environmental Science and Engineering Nankai University Tianjin 300071 China Numerical Simulation Group for Water Environment Key Laboratory of Pollution Processes and EnvironmentalCriteria of Ministry of Education Tianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and Engineering Nankai University Tianjin 300071 China College of Environmental Science and Engineering Yangzhou University Yangzhou 225009 China Department of Mechanical Engineering The University of Hong Kong Hong Kong China

A three-dimensional numerical model is proposed for modeling the TP transport in the Horizontal Subsurface Flow （HSSF） and Wavy subsurface Flow （WSSF） constructed wetland in this article. Both numerical simulations and physical experiments indicate that the removal efficiency of WSSF is higher than that of HSSF. The difference ofperforrnance in removing pollutants, e.g., Total Phosphorus （TP）, between HSSF and WSSF is numerically analyzed from three interactive aspects, that is, the hydraulic behavior, the substrate and the plant roots. It is shown that the dead zone volume in WSSF is smaller than in HSSF with less short circuiting. The soil in the top layer is more used in WSSF than in HSSF. The TP uptake by the plant roots in WSSF is higher than that in HSSF.

关键词： numerical model constructed wetland hydraulic behavior Retention Time Distribution (RTD) removal efficiency

Crystal and Molecular Structure of 2-(2, 6-Dinitro-4-Trifluoromethyl) phenylthio-5, 7-Dimethyl-1,2,4-Triazolo [1, 5-a] Pyrimidine

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Chinese Journal of Structural Chemistry 1997年第4期16卷 298-301页

作者： YANG Guang-Fu LU Rong-Jian YANG Hua-Zheng(institute of Elemento-Organic Chemistry, nankai university, tianjin, 300071)WANG Hong-Gen(Central Laboratory of nankai Univiersity, tianjin, 300071) Inst. of Elemento-Organic Chemistry Nankai Unwersity Tianjin 300071 China Central Laboratory Nankai University Tianjin 300071 China

The crystal structure of the title compound has been determined bysingle crystal X-ray diffraction analysis. C14H9F3N6O4S, Mr = 414. 32, monoclinic,space group P21/n, a=8. 287(3), b= 24. 972(4), c= 8. 617(3)A, β= 108. 36(3)°,V= 1693(2) A3, Z=4, Dx=1. 626 g. cm-3, μ=0. 2481 mm-1; F(000) =840, finalR = 0. 057 and Rw= 0. 057 for 1169 observed reflections [I≥3σ(I)]. The results showthat all ring atoms in the triazolopyrimidinyl moiety were coplanar with strong tensileforce, which might be an important active site.

关键词： crystal structure 1 2 4-triazolo[1 5-a]pyrimidine compound biological activity