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Progress in Chemistry 2006, No.01 Previous issue Next issue

In this issue:

Review
Experimental Measurement and Theoretical Simulation on the Chemical Reactive Scattering Resonance States
Huayang Wang, Xiaomin Sun, Zhengting Cai** ,Dacheng Feng
2006, 18 (01): 1-6 |
Published: 24 January 2006
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Abstract
The scattering resonance states in chemistry reactions control the ratio of the chemical reactions, state distribution and space distribution of the products, and some other properties of the chemical reactions. Two kinds of methods, “indirect" methods and “direct" methods have been used for the experimental measurement on the reactive resonance. There are also two aspects in the theoretical research on the reactive resonance. One is to construct the potential energy surface (PES) of the reaction system and to analyze the scattering resonance state from the structure of the transition state in that PES. The other is to calculate the state-to-state reactive dynamics, especially to investigate the scattering resonance state with the lifetime matrix. The experimental measurements and theoretical simulation methods on the reactive scattering resonance states are introduced and the developing orientation in the future is prospected.
Site Isolation and Phase Cooperation in Heterogeneous Selective Oxidation and Ammoxidation Catalysis
Yang Wang, Fengqiu Chen**, Xiaoli Zhan, Fei Chen
2006, 18 (01): 7-18 |
Published: 24 January 2006
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Abstract
On the basis of ample instances in the field of selective heterogeneous oxidation of hydrocarbon, site isolation and phase cooperation are reviewed in the light of their genesis,implementation and applications.Two important principles constitute two pillars governing selective heterogeneous catalysis.Site isolation was thought to be a prerequisite for obtaining desired partial oxidation products from the corresponding hydrocarbons in selective oxidation catalysis and it played a role in other important reactions.Phase cooperation was a function mode of different crystals through coherent interfaces and remote control mechanisms.
Progress in Cosolvent Effect of Supercritical Fluids and Mixed Fluids
Tiancheng Mu1**, Buxing Han2**
2006, 18 (01): 19-23 |
Published: 24 January 2006
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Abstract
The use of cosolvents enlarges the application of supercritical fluids and speeds up the progress of the science and technology of supercritical fluids. The research of cosolvent effects in supercritical fluids using the technique of phase behavior, calorimetry, spectrum and molecular simulation are reviewed from the view of phase behavior and thermodynamics of the intermolecular interactions. The research on mechanism of cosolvent effects and the thermodynamic properties of mixed fluids near the critical point are introduced, the developing trend of cosolvent effects and mixed fluid is prospected.
Plastic Crystals: An Effective Ambient Temperature All-Solid-State Electrolyte for Lithium Batteries
Xiangming He,Weihua Pu,Li Wang,Changyin Jiang,Chunrong Wan
2006, 18 (01): 24-29 |
Published: 24 January 2006
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Abstract
Plastic crystals are promising materials to be used to prepare ambient temperature all-solid-state electrolyte with high conductivity for lithium batteries. Lithium ion conductivity of plastic crystals reaches the practical level in excess of 10-3S cm-1. The recent advances of plastic crystal electrolytes for lithium batteries are reviewed in this paper.
Current Research Status of Small Fuel Cells and Its Application Analysis
Cheng Wang1*,Zongqiang Mao1,Ronghua Chen2,Gehua Wang1,Xiaofeng Xie1
2006, 18 (01): 30-35 |
Published: 24 January 2006
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Abstract
The recent research progress of the small fuel cells is reviewed. The existing problems in performance, fuel and emissions of the small fuel cells are analyzed in detail, and the possible application is discussed. The research topics for promoting development of the small fuel cells are proposed.
The Research Progress of Sulfonated Polysulfone Proton Exchange Membrane for Fule Cells
Hua Dai,Rong Guan**,Lijuan Wang
2006, 18 (01): 36-44 |
Published: 24 January 2006
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Abstract
Polysulfone is one of the most promising materials used in proton exchange membrane fuel cells. The recent research progress about the preparation of sulfonated polysulfone, the properties of sulfonated polysulfone membrane and cross-linked sulfonated polysulfone membrane are generalized and analyzed in detail. The hydrating capacity and the conductivity of the membrane are especially formulized to give the concrete information about the physical and electrochemical properties of the membrane. Some problems in the research and the research prospects are also discussed.
Effects of Water on Cobalt-Based Fischer-Tropsch Synthesis
Wei Zhou*,Kegong Fang,Jiangang ,Chen,Yuhan Sun*
2006, 18 (01): 45-50 |
Published: 24 January 2006
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Abstract
Cobalt-based Fischer-Tropsch synthesis (FTS) has gained much attention in the research of C1 chemistry recent years. Water is one of the basic products in FTS, which would affect the performance of cobalt catalysts inevitably. The effects of water on the catalytic activity, selectivity and stability of the cobalt catalyst are reviewed.
Nickel-Based Oligomerization Catalysts for Synthesis of Linear α-Olefins
Baojun Zhang1,2,Yanji Wang1**
2006, 18 (01): 51-58 |
Published: 24 January 2006
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Abstract
The oligomerization of ethylene to linear α-olefins by the Shell higher olefins process (SHOP) is of industrial and academic interest and has stimulated intensive research on nickel catalysts with P∩O and related chelating ligands. Nickel-based catalysts possess high catalytic activity for ethylene oligomerization with high selectivity, easily-controlled oligomers distribution and moderate reaction conditions. The compositions, structures and mechanisms proposed for ethylene oligomerization are reviewed. The influence of the ligands and reaction conditions for the oligomerization is discussed.
Review of Polyurethane/Layered Silicate Nanocomposites
Yongcheng Zhang,Yuhua Zhao,Maoqing Kang,Xinkui Wang*
2006, 18 (01): 59-65 |
Published: 24 January 2006
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Abstract
A review is given on the preparation,characterization,property and morphology of polyurethane/layered silicate nanocomposites. These materials are of large potential interest in the academic and industrial materials research. Moreover,the analyses of domestic and overseas research,developing tendency and industrial application of this kind of nanocomposites are discussed.
Progress in Preparation and Applications of Nanocolorants
Zhenkun Hu,Minzhao Xue*,Yangang Liu
2006, 18 (01): 66-73 |
Published: 24 January 2006
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Abstract
Nanocolorants are new kind of colorants which can combine the advantages of both pigments and dyes, and will be promisingly applied to photoelectric high-tech fields. The recent progress in preparation and applications of nanocolorants, the commentary on them, especially with the focus on discussing the preparation of nanocolorants via miniemulsion polymerization are summarized. The applications of nanocolorants to the optoelectronics are proposed.
Copolymerization of Carbon Dioxide with 1,2-Epoxides
Jiesheng Tian,Jinquan Wang,Ya Du,Liangnian He**
2006, 18 (01): 74-79 |
Published: 24 January 2006
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Abstract
Since the discovery of catalysts for the copolymerization of carbon dioxide and 1, 2-epoxides in the late 1960’s by Inoue, the design and synthesis of the efficient catalysts for the selective coupling of 1,2-epoxides and carbon dioxide to afford biodegradable copolymers have made significant gains. It is becoming increasingly clear that this “greener” route to polycarbonates is potential to be supplement to or even supplant current processes for the production of these important thermoplastics, which involve the polymerization of diols and phosgene or organic carbonates. In addition, there is a growing demand for biodegradable polymeric materials. Polycarbonates made from carbon dioxide and 1,2-epoxide have the potential to meet these goals. This review summarizes the polycarbonate synthesis by the copolymerization of 1,2-epoxide and carbon dioxide in the last five years, especially the mechanism and the effects of catalytic activity on the copolymerization.
Applications and Research Progress of Electrosorption
Rong Chen,Xien Hu*
2006, 18 (01): 80-86 |
Published: 24 January 2006
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Abstract
The development of electosorption/desorption of granular active carbon(GAC)，active carbon fiber(ACF)，carbon areogel and activated alumina in regard to environment protection and remediation is reviewed. Their applications of removing the inorganic and organic contaminants in water are especially described. The suggestion about the future research is presented.
Study on the Application of Electrochemical Methods to the Destruction of Chlorinated Aromatic Pollutants
Bo Yang, Gang Yu**,Zulin Zhang
2006, 18 (01): 87-92 |
Published: 24 January 2006
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Abstract
The destruction principles, reaction mechanism and impact factors for the chlorinated aromatic pollutants by electrochemical methods as well as the advances of the research on these methods are reviewed. The research trends for the future are proposed.
The Research Progress on Degradation of Halogenated Organic Compounds by Nano Iron
Rong Cheng1,Jianlong Wang1**,Weixian Zhang2
2006, 18 (01): 93-99 |
Published: 24 January 2006
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Abstract
Halogenated organic compounds are environmental contaminants which are of strong toxicity and difficult to be biodegraded. Traditional technologies encounter some obstacles such as non-complete degradation, low efficiency and so on. The nanotechnology is a new promising method for the treatment of halogenated organic compounds, which dehalogenates from organic compounds using nano metals/bimetals. Nowadays, synthesis of iron nanoparticles from Fe(Ⅱ) and Fe(Ⅲ) can be achieved, which can dehalogenate effectively, as well as restore groundwater and soil in situ or ex situ. In this paper, recent developments in both laboratory and pilot studies are assessed, including: synthesis and modification of nanoparticles, studies on degradation of halogenated organic compounds by nanoparticles such as capabilities, mechanism, kinetics, field studies and so on, perspectives of this technology.
Current Development of Analytical Methods Based on Biological Spatiotemporal Oscillators
Jun Wang,Zhihong Liu,Ruxiu Cai**,Zhixin Lin
2006, 18 (01): 100-106 |
Published: 24 January 2006
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Abstract
Non-linear and non-equilibrium oscillatory behaviors are very common in biological systems, i.e. peroxidase-oxidase reaction, mitochondrion and cell systems. Cell analysis is not only the cut-in point of study on the life process, but also the key subset in modern analytical chemistry. An overview is presented on the analytical method based on dissipation structure and depended on biological spatiotemporal oscillators. The applications of peroxidase-oxidase oscillation, calcium oscillation and glycolytic oscillation on the cellular metabolism assay are summarized.
Progress on the Study of Non-Platinum Metallic Drugs in Antitumor
Gang Xu,Yubo Cui,Kai Cui,Shaohua Gou**
2006, 18 (01): 107-113 |
Published: 24 January 2006
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Abstract
Since cis-platin has been discovered showing antitumor activity, metallic antitumor agents have been widely investigated. Some non-platinum metallic compounds have also been found to possess antitumor properties, and quite a number of interesting and promising results have been achieved although the exploration of these compounds is at a slow pace compared to the platinum agents. This review mainly outlines the progress of the non-platinum metallic antitumor drugs in clinical trials.
The Development of Polyoxometalates as Antivirus Drugs
Jie Liu1**,Enbo Wang2,Liangnian Ji1
2006, 18 (01): 114-119 |
Published: 24 January 2006
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Abstract
The research of antiviral, antitumor and antibacterial properties of polyoxometalates has been well developed recently. In this paper, the development of the research on the inhibitory activities of polyoxometalates against HIV (human immunodeficiency virus), HSV-1 (herpes simplex virus-1), HSV-2 (herpes simplex virus-2) and influenza virus during these 30 years is critically reviewed. The antivirus ability of different kinds of polyoxometalates has also been summarized.
Modeling Techniques of Multidimensional Quantitative Structure-Activity Relationship in Computer-Aided Drug Design
Guizhao Liang1,Hu Mei1,Yuan Zhou1,Zhiliang Li 1,2*
2006, 18 (01): 120-130 |
Published: 24 January 2006
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Abstract
Multidimensional quantitative structure-activity relationship (MD QSAR) has been successfully applied as a crucial technique for computeraided drug design (CADD) in various fields. Based on plentiful literatures, different strategies and various methodologies of MD QSAR are systematically summarized by combining with research works in authors'  laboratory. Recent progress of MD QSAR in CADD is reviewed.