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分子催化 1998年第3期 3-5页

作者： LIU Pu LIU Ye GAO Runxiong YIN Yuanqi (lanzhou institute of chemical {3. The chinese academy of sciences lanzhou 73.000)

ＳｔｕｄｙｏｎｔｈｅＨｏｍｏｇｅｎｅｏｕｓＨｙｄｒｏｇｅｎａｔｉｏｎｏｆＭａｌｅｉｃＡｎｈｙｄｒｉｄｅｔｏＩｔｓＤｅｒｉｖａｔｅｓⅢ．ＫｉｎｅｔｉｃＳｔｕｄｙｏｎｔｈｅＨｙｄｒｏｇｅｎａｔｉｏｎｏｆＭＡｔｏＳＡＬＩＵ... 详细信息

ＳｔｕｄｙｏｎｔｈｅＨｏｍｏｇｅｎｅｏｕｓＨｙｄｒｏｇｅｎａｔｉｏｎｏｆＭａｌｅｉｃＡｎｈｙｄｒｉｄｅｔｏＩｔｓＤｅｒｉｖａｔｅｓⅢ．ＫｉｎｅｔｉｃＳｔｕｄｙｏｎｔｈｅＨｙｄｒｏｇｅｎａｔｉｏｎｏｆＭＡｔｏＳＡＬＩＵＰｕＬＩＵＹｅＧＡＯＲｕｎｘｉｏｎ...

关键词： Homogeneous catalysis Kinetic study Hydrogenation Maleic Anhydride Succinic anhydride

EPR Study on Mixed Valence States of Mo Ions in Molybdenum Nitride

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分子催化 1998年第3期 4-5页

作者： XIE Guohuang JIANG Zhicheng AN Lidun BAI Tingfang WANG Hanqing2)(lanzhou institute of chemical {3. The chinese academy of sciences lanzhou 73.000)

ＥＰＲＳｔｕｄｙｏｎＭｉｘｅｄＶａｌｅｎｃｅＳｔａｔｅｓｏｆＭｏＩｏｎｓｉｎＭｏｌｙｂｄｅｎｕｍＮｉｔｒｉｄｅ１）ＸＩＥＧｕｏｈｕａｎｇＪＩＡＮＧＺｈｉｃｈｅｎｇＡＮＬｉｄｕｎＢＡＩＴｉｎｇｆａｎｇＷＡＮＧＨａｎｑｉ... 详细信息

ＥＰＲＳｔｕｄｙｏｎＭｉｘｅｄＶａｌｅｎｃｅＳｔａｔｅｓｏｆＭｏＩｏｎｓｉｎＭｏｌｙｂｄｅｎｕｍＮｉｔｒｉｄｅ１）ＸＩＥＧｕｏｈｕａｎｇＪＩＡＮＧＺｈｉｃｈｅｎｇＡＮＬｉｄｕｎＢＡＩＴｉｎｇｆａｎｇＷＡＮＧＨａｎｑｉｎｇ２）（ＬａｎｚｈｏｕＩｎｓｔｉ...

关键词： EPR Molybdenum nitride Passivation

Syntheses of Clusters Containing C2M2（M=Co,Mo）Cores and Crystal Structure of 〔dpp〕〔Mo2Cp2（CO）4〕·CH2Cl2

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chinese Journal of Structural Chemistry 1999年第4期18卷 35-40页

作者： CHEN XueNian ZHANG Jie YIN YuanQi (State Key Laboratory for Oxo Synthesis and Selective Oxidation,lanzhou institute of chemical {3., the chinese academy of sciences, lanzhou 73.000)ZSUN Jie (Shanghai institute of Organic Chemistry, the chinese Acad State Key Lab. Oxo Synthesis S. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China Shanghai Inst. of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｅｘｔｅｎｓｉｖｅａｎｄｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｃｈｅｍｉｓｔｒｙｏｆｄｉｎｕｃｌｅａｒｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｏｍｐｌｅｘｅｓｂｒｉｄｇｅｄｂｙｕｎｓａｔｕ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｅｘｔｅｎｓｉｖｅａｎｄｒａｐｉｄｄｅｖｅｌｏｐｍｅｎｔｏｆｔｈｅｃｈｅｍｉｓｔｒｙｏｆｄｉｎｕｃｌｅａｒｔｒａｎｓｉｔｉｏｎｍｅｔａｌｃｏｍｐｌｅｘｅｓｂｒｉｄｇｅｄｂｙｕｎｓａｔｕｒａｔｅｄｈｙｄｒｏｃａｒｂｏｎｓ...

关键词： cobalt molybdenum diyne compounds crystal structure cluster

Friction-reducing and antiwear behavior of metal halide-stabilized linear phosphazene derivatives as lubricants for a steel-on-steel contact

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Science China(Technological sciences) 2005年第3期48卷 282-291页

作者： ZHU Jiamei 1,2 , LIU Weimin 2 & LIANG Yongmin 2 1. School of chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221008, China 2. State Key Laboratory of Solid Lubrication, lanzhou institute of chemical physics, chinese academy of sciences, lanzhou 73.000, China School of chemical Engineering and Technology China University of Mining and Technology Xuzhou China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou China

A series of novel metal halide-stabilized linear phosphazene derivatives were synthesized. The friction-reducing and antiwear abilities of the resulting products as the lubricants for a steel-on-steel contact were comparatively investigated on an Optimol SRV oscillating friction and wear tester. The morphology of the worn steel surface was observed on a scanning electron microscope, while the chemical states of some typical elements on the worn steel surface were examined by means of X-ray photoelectron spectroscopy. It was found that both the side branch structures and central metals influenced the friction-reducing and antiwear behaviors of the synthetic derivatives as the lubricants, which was related to the different adsorption activities of the organic compounds composed of different organic ingredients and metallic ions on a nascent metal surface. All the synthetic lubricants except for the iron (III) derivative showed increased antiwear abilities with increasing metallic ionic radius. A protective layer originated from the tribochemical reaction together with the adsorbed boundary lubricating layer containing organic fluorine compounds, nitrogen oxide, and Fe 3.(PO 4 ) 2 plays an important role in improving the friction and wear behavior of the steel-on-steel system.

关键词： metal halide-stabilized linear phosphazene derivatives,lubricant,steel,tribological properties.

Heterometallic Cluster Catalyzing Coordinative Hydrogenation Promoted by Oxygen Transfer Reagent

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分子催化 1998年第1期 2-3页

作者： LI Qingshan DING Errun WU Shulin YIN Yuanqi 1) (lanzhou institute of chemical {3. The chinese academy of sciences lanzhou 73.000)

ＨｅｔｅｒｏｍｅｔａｌｉｃＣｌｕｓｔｅｒＣａｔａｌｙｚｉｎｇＣｏｏｒｄｉｎａｔｉｖｅＨｙｄｒｏｇｅｎａｔｉｏｎＰｒｏｍｏｔｅｄｂｙＯｘｙｇｅｎＴｒａｎｓｆｅｒＲｅａｇｅｎｔＬＩＱｉｎｇｓｈａｎＤＩＮＧＥｒｒｕｎＷＵＳ... 详细信息

ＨｅｔｅｒｏｍｅｔａｌｉｃＣｌｕｓｔｅｒＣａｔａｌｙｚｉｎｇＣｏｏｒｄｉｎａｔｉｖｅＨｙｄｒｏｇｅｎａｔｉｏｎＰｒｏｍｏｔｅｄｂｙＯｘｙｇｅｎＴｒａｎｓｆｅｒＲｅａｇｅｎｔＬＩＱｉｎｇｓｈａｎＤＩＮＧＥｒｒｕｎＷＵＳｈｕｌｉｎＹＩＮＹｕａｎｑｉ１）（...

关键词： Heterometallic cluster Hydrogenation Oxygen transfer reagent Homogeneous catalysis

EMPLOYMENT OF SPIN TRAPPING TECHNIQUE TO THE STUDY OF PHOTOCATALYTIC DEHYDROGENATION MECHANISM OF ALCOHOL IN AQUEOUS SOLUTION

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分子催化 1989年第S1期3卷 15-21页

作者： Jin Zhensheng, LiQinglin, Feng Liangbo, GuXiaofeng (lanzhou institute of chemical {3., chinese academy of sciences, lanzhou, China)

Spin trapping technique was employed to study the mechanism of photocatalyticdehydrogenation of alcohol during in situ irradiation of Rh2O3.CdS powder which is sus-pended in aqueous aicohol *** for production of ·OH ... 详细信息

Spin trapping technique was employed to study the mechanism of photocatalyticdehydrogenation of alcohol during in situ irradiation of Rh2O3./sub>/CdS powder which is sus-pended in aqueous aicohol *** for production of ·OH radical is presentedand the rate of·OH radical formation corresponds to the rate of H2 *** the ba-sis of the above results,it is suggested that water cleavage is an intermediate step in this reac-tion.

关键词： irradiation alcohol trapping SPIN cleavage operated visible Intermediate remarkable ethanol

Separation of Ephedrines Using 1-Butyl-3.methylimidazolium-tetrafluoroborate Ionic Liquids as Eluent in High-performance Liquid Chromatography (HPLC)

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chinese chemical Letters 2003年第6期14卷 603-604页

作者： Li Jun HE, Wen Zhu ZHANG, Bo WEN, Xia LIU, Sheng Xiang JIANG* lanzhou institute of chemical {3., chinese academy of Science, lanzhou 73.000 lanzhou Inst. of chemical physics Chinese Academy of Science Lanzhou 730000 China

A simple, effective HPLC method for separation of ephedrines was achieved by using 1-butyl-3.methylimidazolium-tetrafluoroborate ionic liquid solution (0.1% v/v) as eluent at pH 3.0. The involved mechanism may be due to that the imidazolium cations can effectively shield the silanol groups of alkylsilica surface, thereby decreasing band tailing and increasing the separation efficiency.

关键词： Ionic liquid ephedrine HPLC.

Ice core dust particulate by XPS-SEM/EDAX——Impact of dust particulate on SO_4^(2-) record in ice cores

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chinese Science Bulletin 1999年第15期44卷 1424-1427页

作者： LI Zhongqin , LU Gongxuan , LIU Baozhong , FU Hongxiang LIU YuTianshan Glaciological Station , lanzhou institute of Glaciology and Geocryology , chinese academy of sciences , {3.,China State Key Laboratory for Oxo Synthesis and Selective Oxidation, lanzhou institute of chemical physics , chinese academy ofsciences , {3., China, Tianshan Glaciological Station Lanzhou Inst. Glaciol. Geocryology Chinese Academy of Sciences Lanzhou 730000 China State Key Lab. Oxo Synthesis S. Lanzhou Inst. of Chemical Physics Chinese Academy of Sciences Lanzhou 730000 China

The ice core dust particulate sampled from Mt. Xixabangma has been analyzed by means of X-ray photoelectron spectrometer （XPS） and scanning electron microscope with energy dispersion X-ray analysis （SEM/EDAX）. The results show that the contents of SO42- and SO3./sub>2- in the surface layer of the dust are significantly higher than those in the subsurface layer （with the exception of organic sulfide）. This difference indicates that the surface SOx has been captured and then chemically converted by the atmospheric dust particulate before its deposition with snow, which is obviously different from those inner layer sulfates and sulfites contained by dust itself. In addition, it has been determined by SEM/EDAX that the dust contains relatively high concentrations of transition metal elements such as Fe and Ti oxides which could function as photocatalysts to the conversion of SOx adhered on the surface of the dust, and consequently accelerate the deposition of SOx to snow. Our research also

关键词： ice core records dust partculate sulfate ions.

Preparation of Polymeric Monolithic Column and Application to the Resolution of Aromatic Compounds in Capillary Electrochromatography

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chinese chemical Letters 2004年第12期15卷 1477-1479页

作者： Xia WANG Wen Zhi LI Chun Hui LIU Yong Min LI Li Ren CHEN lanzhou institute of chemical {3. chinese academy of sciences, lanzhou 73.000 College of Chemistry and chemical Engeering,Liaocheng University, Liaochang 252059 lanzhou Inst. of chemical physics Chinese Academy of Sciences Lanzhou 730000 China Coll. of Chem. and Chem. Engeering Liaocheng University Liaocheng 252059 China

Polymeric monolithic capillary column-poly(GMA-co-EDMA-co-AMPS) was prepared andused for resolution of aromatic compounds (benzalcohol, 2-phenylethanol, toluene, ethylbenzene).

关键词： Polymeric monolithic column aromatic compounds c apillary electrochromatography.

Pentacyclic triterpenoid ketones in peat from Gannan Marsh,China

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chinese Science Bulletin 2001年第17期46卷 1433-1436页

作者： DUAN Yilanzhou institute of Geology, chinese academy of sciences, {3., China lanzhou institute of Geology Chinese Academy of Sciences Lanzhou China

Abundant terrigenous triterpenoid ketones and a series of hopanoid ketones were detected in a peat sample from the recent Gannan Marsh. The identifications of pen-tacyclic triterpenoid ketones are discussed in detail. Based on the compositional features of pentacyclic triterpenoid ketones in the sample, it is proposed that terrigenous triterpenoid kentones originate directly from organisms or are diagenetic oxidation products of their alcohols, and hopanoid ketones are formed from hopanoids (e.g. hopanoid alcohols and hopenes) by chemical and biochemical processes. These data provide evidence for the applied studies of pentacyclic triterpenoid ketones as biomarker compounds.

关键词： Gannan Marsh peat pentacyclic triterpenoid ketones identification biochemistry.