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Electrocatalytic Oxidation of Ethanol on Electrodcposited Palladium Electrode

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Chinese Chemical Letters 1999年第5期10卷 407-410页

作者： Pei Liang SHE Shi Bing YAO Shao Min ZHOU(department of {1..{2. key laboratory for physical {1. of solid surfacesxiamen university. xiamen 361.05) department of{1. Xiamen University Xiamen 361005 China state {1. Lab. Phys. Chem.{2. S. Xiamen University Xiamen 361005 China

The oxidation of ethanol in 1..0 mol/L NaOH was studied on Pd/GC electrode preparedby electrodeposition. The results show that (1. Pd/GC electrode can also demonstrateclectrocatalytic activity towards the oxidation of cthanolf (2. two backward anodic peaks on thecathodic branch appear when the ethanol concentration is raised up to 0.5 mol/L.

关键词： Electrodeposition electrocatalytic oxidation ethanol

Synthesis and CD Spectra of Chiral Molybdenum-fullerenyl Complexes with Pineno-bipyridine Ligands

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Chinese Chemical Letters 2004年第12期15卷 1411-1414页

作者： Hui ZHANG Cai Fei ZHU Li LI Wei ZOU Yong Qing HUANG Jing Xing GAO department of{1., {2. key laboratory for physical{1. of solid Surface, xiamen university, xiamen 361.05 department of{1. State Key Laboratory for Physical Chemistry of Solid Surface Xiamen University

The synthesis and characterization of two chiral fullerene complexes (+)_(430)^(CD)-[Mo(η~2.C_(60))(CO)_3(L^(RR))] 1.and (-)_(430)^(CD)-[Mo(η~2.C_(60))(CO)_3(L^(SS))] 2.were described. The CD spectra of 1.and 2.inthe visible range show weak Cotton effects, which are approximately of mirror image, indicatingthat the appended pineno-groups with opposite chirality in bipyridines can perturb the fullerenechromophores through the molybdenum centers and lead to induced CD effects.

关键词： Mo complexes chirality bipyridine fullerenes CD spectra.

Hydroxyapatite/Metal Composite Coatings Prepared by Two-step Electrodeposition Method

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Chinese Chemical Letters 1998年第4期9卷 403-406页

作者： Jian Min ZHANG Chang Jian LIN Zu De FENG Zhao Wu TIAN(state key Lab. for{2. chemistry of solid Surface, Institute of{2. chemistry, department of chemistry, department of Materials Science, xiamen university, xiamen 361.05) xiamen Univ Dept Chem State Key Lab Phys Chem Solid Surface Inst Phys ChemDept Mat Sci Xiamen 361005 Peoples R China

A two-step electrodeposition method was developed to prepare hydroxyapatite/metal composite coatings. Hydroxyapatite coatings were fabricated by electrochemical deposition and post-treatment with alkaline solution, and then cobalt was electrodeposited to form hydroxyapatite/cobalt composite coatings to improve its mechanical properties of bonding strength.

关键词： hydroxyapatite electrodeposition composite coating

Study on interaction between macrocell and microcell in the early corrosion process of reinforcing steel in concrete

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Science china(Technological Sciences) 2010年第5期53卷 1285-1289页

作者： LI LanQiang1,DONG ShiGang1,WANG Wei2,HU RongGang1,DU RongGui1,LIN ChangJian1,ZHUO XiangDong1 & WANG Jia2 1 state key {1. of physical chemistry of solid surfaces,department of chemistry,College of chemistry and Chemical Engineering,xiamen {1.},xiamen {1.},china 2 College of chemistry and Chemical Engineering,Ocean {1.} of china,Qingdao 266100,china 1. state {1.{2. of physical chemistry of solid surfaces Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China2. College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266100 China

An array electrode technique was developed as a novel electrochemical method for studying the interaction between macrocell and microcell in the early corrosion process of reinforcing steel in cement *** corrosion potential and galvanic current of macrocell corrosion of the reinforcing steel in cement mortar were imaged by the array electrode technique during the corrosion initiation and *** was certified that the corrosion macrocell current is closely related with the difference of corrosion potential between the anodic and cathodic *** corrosion macrocell and microcell always exist during the corrosion *** interaction of corrosion macrocell and corrosion microcell of steel in concrete was directly sensed by the array electrode for the first time,and was discussed in terms of corrosion electrochemistry.

关键词： reinforcing steel in concrete array electrode macrocell microcell

Size and support effects for CO oxidation on supported Pd catalysts

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Science china{1. 2010年第9期53卷 2047-2056页

作者： WANG ZhaoWen,LI Bin,CHEN MingShu,WENG WeiZheng & WAN HuiLin state key {1. of physical chemistry of solid surfaces National Engineering {1. for Green Chemical Productions of Alcohols-Ethers-Esters department of chemistry,College of chemistry and Chemical Engineering,xiamen {1.},xiamen {1.},china 1. state {1.{2. of physical chemistry of solid surfaces Xiamen University Xiamen 361005 China2. National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters Xiamen University Xiamen 361005 China3. Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China

Supporting Pd catalysts characterized significant different size distribution were obtained using PdCl2.[Pd(NH3)4](NO3)2.and Pd(acac)2.as ***-resolution transmission electron microscopy(TEM),X-ray diffraction(XRD),in-situ Fourier transform infrared spectroscopy(FTIR) and Raman spectroscopy were used to examine the dispersion of *** performance measurements show that the activities for CO oxidation increase as the Pd particle size decreases and the O2.CO ratio *** activities under oxygen rich conditions are significantly higher than those at near the stoichiometric *** on TiO2.prepared by the Pd(acac)2.precursor is highly dispersed,leading to a considerable activity for CO oxidation at near room *** oxidation on the 1.wt% Pd/TiO2.and under an O2.CO ratio of 1.characterized an apparent activation energy of 36.7 kJ/mol,which is closed to those reported for CO oxidation on the supported Au *** present work demonstrates a high catalytic activity of highly dispersed noble metals,and suggests a promising approach of using noble metals as catalysts with exceeding high efficiency.

关键词： noble metals supported palladium CO oxidation size effect support effect

ASSIGNMENTS FOR THE GROUND stateS OF METAL MONOCARBONYLS

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Chinese Chemical Letters 1995年第10期6卷 887-890页

作者： Xin XU Nan Qin WANG Xin LU Qian Er ZHANG(state key{2. for physical chemistry of the solid Surface,department of chemistry,xiamen university,Fujian 361.05) xiamen Univ Dept Chem State Key Lab Phys Chem Solid Surface Xiamen 361005 Peoples R China

The bonding mechanisms between the first-row transition metal and carbon monoxide were discussed. Three basic rules have been drawn up to determine the ground states of the metal monocarbonyls. The theoretical assignm...

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A New Catalyst for Hydrogen Transfer Hydrogenation of Acetophenone

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Chinese Chemical Letters 1997年第3期8卷 255-258页

作者： Pian Pian XU Rong Hui ZHENG Jing Xing GAO Pei Qing HUANG Hui Lin WAN （department of{1. and Stste {2. laboratory of physical{1. of solid Surface xiamen university, xiamen 361.05 ） xiamen UNIV DEPT CHEMXIAMEN 361005PEOPLES R CHINA xiamen UNIV STATE KEY LAB PHYS CHEM & SOLID SURFACEXIAMEN 361005PEOPLES R CHINA

A new C-2.symmetric diamine/diphosphine Ruthenium (II) complex, RuCl2.2.2.4, was used as an excellent catalyst to carry out the catalytic hydrogen transfer reduction of acetophenone. The conversion of acetophenone to 2.phenylethanol was up to 99% under the following reaction conditions: substrate:Ru:(CH3)(2.CHOK = 2.0:1.1.0} reaction temperature of 65 degrees C; reaction time of 2.h; normal pressure. A hydride transfer mechanism was also discussed.

关键词： A New Catalyst for Hydrogen Transfer Hydrogenation of Acetophenone Pro Chen Wang

Properties and characterization of Au^(3+)-adsorption by mycelial waste of Streptomyces aureofaciences

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Chinese Science Bulletin 2001年第20期46卷 1709-1712页

作者： LIU Yueying, FU Jinkun, HU Hongbo, TANG Dingliang, Nl Zimian & YU Xinsheng1. department of Biology, 2. {1. {2. laboratory for physical chemistry of solid Surface, 3. Center for Analysis & Testing, xiamen university, xiamen 361.05, china department of Biology Xiamen University Xiamen China state {1.{2. for physical chemistry of solid Surface Xiamen University Xiamen China Center for Analysis & Testing Xiamen University Xiamen China

Mycelial waste of Streptomyces aureofaciences procured from the aureomycin fermentation industry is used as biosorbent for Au3+. The properties of Au3+ adsorption by the mycelial waste are studied. The results indicate that the optimum pH value of Au3+ adsorption is 3.5. The biosorption is a rapid and non-temperature-dependent process. The bio-sorptive capacity with 45.6 mg/g and efficiency with 91.2. are achieved under the conditions of pH 3.5 and 30℃ for 45 min, in which the ratio is 50 mg/g dry weight for the concentrations of initial Au3+ and the mycelial waste. The Au3+ ions adsorbed on the mycelial waste can be eluted. The observation in a transmission electron microscope shows that the Au3+ ions can be reduced to Au particles by the mycelial waste and the Au can become gold crystals with differentforms and sizes. X-ray photoelectron spectroscopy analysis further proves that the Au3+ can be reduced to Au0 by the mycelial waste.

关键词： Streptomyces aureofaciences mycelial waste gold bio-sorption gold crystal characterization.

STUDIES ON BaF2.PROMOTED PRASEODYMIUM OXIDE CATALYSIS FOR THE OXIDATIVE COUPLING OF METHANE

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Journal of Energy chemistry 1997年第2期 85-92页

作者： LONG Rui-Qiang WAN Hui-Lin(department of {1. and {2. key laboratory for physical {1. of the solid Surface xiamen university xiamen, Fujian 361.05)

The catalytic performance for oxidative coupling of methane (OCM) and characterizations of the BaF2.promoted praseodymium oxide catalysts have been studied in this work. The results showed that C2.selectivities and yields over the BaF2.promoted Pr6O1. catalysts were significantly higher than those over Pr6O1. catalyst. In the process of catalyst preparation, the partial exchange between F- and O2. led to the formation of PrOF new phase and the contraction of BaF2.lattice. The increase in C2.selectivity over BaF2.doped Pr6O1. might result from the decrease of specific surface area and mobility of lattice oxygen as well as the dispersion of F- on the surface of the catalysts. No direct relationship between the surface acidity/basicity and the catalytic activity/selectivity was observed over these catalysts.

关键词： methane oxidative coupling praseodymium chide BaF2