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A NOVEL REACTION BETWEEN Ge-Ge AND Fe-Fe BONDS IN COMPLEX (Me_2GeGeMe_2)[(η￣5 - C_5H_4) Fe(CO)]_2(μ- CO)_2 AND CRYSTAL STRUCTURE OF THE PRODUCT

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Chinese Chemical Letters 1996年第4期7卷 385-386页

作者： Zhou X.Z. Xie W.H. Xu S.S. department of chemisty Nankai University Tianjin 300071

Me2GeGeMe2)[(η￣5-C_5H_4)Fe(CO)]_2(μ-CO)_2, 1 undergoes a novel reaction between its Ge-Ge and Fe-Fe bonds, forming a rearrangement product with a new cyclic structure,[Me_2Ge(η￣5- C_5H_4)Fe(CO)_2]_2, 2, which was...

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An Improved Synthesis of Tn Antigen

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Chinese Chemical Letters 2001年第1期12卷 25-26页

作者： Guo Lin ZHANG Yong Zhou HU department of Medicinal chemisty School of PharmacyZhejiang UniversityHangzhou 310031

We have developed an alternative route to synthesize Tn antigen. The synthetic product was characterized by IR, H-1-NMR and elemental analysis.

关键词： Tn antigen Total synthesis

DETERMINATION OF THE ENTROPY CHANGE FOR ELECTRODE REACTION AND DILUTE ENTHALPY OF SOME IONS BY THERMO-ELETROCHEMICAL TECHNOLOGY

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Journal of Central South University 1998年第1期10卷 39-41页

作者： Fang Zheng Guo Lin Zhang Hengzhong Zhang Pingming(department of chemisty, Central South University of Technology, Changsha 410083, China) department of chemisty Central South University of Technology Changsha China

Based on thermoelectrochemical equation for an electrode reaction, the entropy change of it can be obtained by the thermoelectrochemical technology(TECT). The entropy changes of Fe(CN)-36/Fe(CN)-46,H+/H2(P0), Cu+2/Cu and Zn+2/Zn electrode reaction systems and the dilute enthalpies of the H+, Cu2+ and Zn2+ ions under the ion concentrations studied have been determined by a specially designed thermoelectrochemical equipment. The enthalpy change and entropy change for the five systems at unlimitedly diluted concentrations agree well with the literature.

关键词： thermoelectrochemistry entropy dilute enthalpy

STUDIES ON THE POLAROGRAPHIC ADSORPTIVE COMPLEX WAVE OF ISONUCLEAR COMPLEX OF RARE EARTH ION-COPPER(Ⅱ)-ALIZARIN COMPLEXON (ALC)

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Chinese Science Bulletin 1989年第22期34卷 1861-1865页

作者：李南强王鸿香 department of chemisty Peking University Beijing 100871 PRC

In our previous papers, the isonuclear complexes of RE (Ⅲ)-Ni (Ⅱ) (or Co(Ⅱ))-ALC had been studied by single-sweep polarograph. In the present note, the polarographic adsorptive complex wave of RE (Ⅲ)-Cu (Ⅱ)-ALC i... 详细信息

关键词： single-sweep polarograph adsorptive complex wave isonuclear complex of rare earth ions

Characteristics of distribution and transport of petroleum contaminants in fracture-karst water in Zibo Area, Shandong Province, China

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Science China Earth Sciences 2000年第2期43卷 141-150页

作者：朱学愚刘建立朱俊杰陈余道 department of Earth Sciences Nanjing University Nanjing China department of chemisty Nanjing University Nanjing China department of Construction Engineering Guilin Institute of Technology Guilin China

Fracture-karst water is an important water resource for the water supply in North China. Petroleum contamination is one of the most problematic types of the groundwater pollution. The characteristics of distribution and transport of the petroleum contaminants in fracture-karst water are different from those in porous water. The flow velocity of fracture-karst water is much faster than the velocity of porous water on an average. Therefore, contaminant transport in fracture-karst water is an absolute advection-dominated problem. The plume of the petroleum contamination may extend to several kilometers from pollution sources. It was not caused by the oil pool floating on the water table but by the oil components dissolved and scattered in groundwater. The distribution of the petroleum contaminants over space are concentrated in the strong conductive zone on the plane. On the vertical section the highest concentration of the oil contaminants appeared in the strata where the contamination sources were located. The concentrations of the oil contaminants in wells changed greatly over time. Therefore, the curves of concentration versus time fluctuated greatly. The reasons are as follows, (a) Fracture-karst water has a very great velocity, (b) Local flow fields which were caused by pumping and stoppage in some wells changed frequently, (c) In fracture-karst aquifer the transport channels are complicated, (d) Residual oil in vadose zone was leached after rainfall. It is of great practical value for the control and remediation of petroleum contamination in fracture-karst aquifer to understand those characteristics.

关键词： fracture-karst water petroleum contaminants tracing test benzene curve of concentration versus time spatial distribution.

Synthesis of N-Alkylperfluorooctanesulfonamides and Its Derivatives

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有机化学 2003年第Z1期23卷 118-119页

作者： LI Yan CHEN Zhi-Qi ZHOU Ye-Bing CHEN Zu-Xing LIU Zhao-Jie Faculty of chemisty and Material Science Hubei University Wuhan 430062 Institute of Organic Synthesis Central China Normal University Wuhan 430079 Faculty of Chemisty and Material Science Hubei University Wuhan 430062 Faculty of Chemisty and Material Science Hubei University Wuhan 430062 Faculty of Chemisty and Material Science Hubei University Wuhan 430062 Institute of Organic Synthesis Central China Normal University Wuhan 430079

　　N-Alkylperfluorooctanesulfonamide compounds are special fine chemicals, and have been applied in many fields, such as vulcanizing agents for fluoro rubbers, smooth and friction reducing for coatings, fire extinguisher, anticorrosive agents for metals, water- and oil-repellents for leather, textiles and paper, photographic emulsion.[1]……

关键词： vulcanizing agents

Experimental and Simulating Study of Supercritical CO_2 Extraction of Ginger Essential Oil

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Chinese Journal of Chemical Engineering 2005年第4期13卷 572-576页

作者：刘学武李志义陈淑花詹世平夏远景魏勇 R&D Institute of Fluid and Powder Engineering Dalian University of Technology department of chemisty and Chemical Engineering Dalian University

An experimental setup for separating ginger essential oil by supercritical fluid extraction is established. The effects of the extraction pressure, temperature, CO2 flow rate and particle size of raw material on the extraction rate are investigated, and the optimum process conditions of supercritical CO2 extraction are determined. A mathematical simulation model is established based on the mass conservation in differential units of extraction bed. The total mass transfer driving force and the equilibrium absorption constant are evaluated by the linear driving force theory. The results from numerical simulation agree well with the experimental data.

关键词： supercritical CO2 extraction ginger essential oil simulation

Polymerization of Butyl Methacrylate Catalyzed by Salicylaldehyde-Imine Zirconium/Al(i-Bu)_3 System

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Journal of Wuhan University of Technology(Materials Science) 2018年第2期33卷 492-499页

作者：程正载 TANG Ran 谢聪 WANG Yun DING Ling WANG Handing YAN Xiaochao ZHU Sanyong Gauthier Mario School of chemisty and Chemical Engineering Wuhan University of Science and Technology Hubei Province Key Laboratory of Coal Conversion And Novel Carbon Materials Chemistry department University of Florida Hubei Collaboration Innovative Center for Non-Power Nuclear Technology Hubei University of Science and Technology

A new kind of zirconium（Zr） complex containing ligand of salicylaldehyde-imine was successfully synthesized with ZrCl_4·2 THF and salicylaldehyde-imine as raw materials. The ligand was characterized by means of ~1HNMR, IR, and GC-MS, and Zr complex was characterized by means of ~1HNMR and IR, respectively. The Zr complex, combined with co-catalyst of Al（i-Bu）_3, was explored to be effective catalytic system for the polymerization of butyl methacrylate（BMA）, to prepare poly-n-butyl methacrylate（PBMA）, which was characterized by IR, ~13C-NMR and GPC. Compared with other double-component（MAO/Cat, AlEt_3/Cat） catalytic systems, catalytic system of Al（i-Bu）_3 and the Zr complex provided the best catalytic activity under the same conditions. The influence of polymerization parameters, such as molar ratio of Al（i-Bu）_3/Cat and BMA/Cat, polymerization temperature and polymerization time, was studied with Zr complex/Al（i-Bu）_3 system. With increasing polymerization time from 4 to 24 hour, the monomer conversion increased from 40.14% to 96.56%. Viscosity-average molecular weight（M_v） of PBMA, detected by the viscosity methodology, increased from 12.67×10~4Da to 44.97×10~4Da and lower molecular weight distribution was obtained. According to these results, the Zr complex contained ligand of salicylaldehyde-imine was a kind of readily, long lifetime and high activity catalyst for BMA polymerization.

关键词： salicylaldehyde-imine zirconium catalyzed polymerization butyl methacrylate

Efficient Visible Light-Induced Photocatalytic Disinfection of Sulfur-Doped Nanocrystalline Titania

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Efficient Visible Light-Induced Photocatalytic Disinfection ...