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nitial Potential" Effect on the Dissociative Adsorption of Methanol on A Roughened Platinum Electrode in Acidic Solution

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Chinese Chemical Letters 2001年第10期 913-916页

作者： Ze Lin LI1*, Bin REN2, Chun Xing SHE2, Xiao Ming XIAO1, Zhong Qun TIAN2* 1Department of chemistry, Hunan Normal university, Changsha 410081 2state key laboratory for physical chemistry of solid surfaces and Department of chemistry, xiamen university, Xia

In situ Raman spectroscopic and voltammetric studies indicate that dissociative adsorption of methanol on the rough platinum electrode occurs in the hydrogen ad/desorption potential range, and the dissociative extent depends on the initial potential of the electrode before contacting methanol, in addition to the contacting time. As the dissociative product, carbon monoxide competes the site of strongly bound hydrogen preferentially, and shifts the ad/desorption potentials of weakly bound hydrogen towards more positive ones gradually with the increase of CO coverage. Whereas, formaldehyde dissociates more easily by far and completely suppresses H-adsorption. The confocal Raman spectroscopy developed on transition metals shows some intriguing advantages in investigating electrocatalytic oxidation of small organic molecules.

关键词： Methanol formaldehyde dissociative adsorption in situ Raman spectroscopy.

In Situ FTIR Spectroscopic Studies of Electrooxidation of Glyoxal

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In Situ FTIR Spectroscopic Studies of Electrooxidation of Gl...

第三十五届国际光谱会议

作者： T.Huang S.P.Chen S.G.Sun~* state key laboratory of physical chemistry of solid surfaces Department of chemistry xiamen university xiamen 361.05 china

＜正＞Glyoxylic acid is a high added-value material,which can be widely used in the cosmetic, food,flavor,pesticide,oil paint,leather,paper making and pharmaceutical industries[1]. Industrially,glyoxylic acid is currently produced by nitric acid oxidation of glyoxal or *** electrochemical oxidation of glyoxal[2],the electroreduction of oxalic acid [3],the simultaneous anodic oxidation of glyoxal and cathodic reduction of oxalic acid

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Construction of High-Nuclearity 3d-4f Metal Clusters through Incorporation of Anions

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Construction of High-Nuclearity 3d-4f Metal Clusters through...

中国化学会第六届全国结构化学学术会议

作者： La-Sheng Long state key laboratory of physical chemistry of solid Surface and Department of chemistry, College of chemistry and Chemical Engineering,xiamen university,xiamen 361.05,china

＜正＞High-nuclearity metal clusters that show fascinating structures and interesting properties have been attracted much attention in the field of physics,chemistry,biology,nanotechnogly and material science. Of part...

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Construction of High-nuclearity 3d-4f metal clusters via anion-template from in situ decomposition of organic ligand

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Construction of High-nuclearity 3d-4f metal clusters via ani...

11th Conference on solid state chemistry and Inorganic Synthesis Joint with 2th Dalton Transactions International Symposium

作者： La-Sheng Long state key laboratory of physical chemistry of solid Surface and Department of chemistry,College of chemistry and Chemical Engineering,xiamen university,xiamen 361.05, china.

High-nuclearity 3d-4f metal clusters that show fascinating structures and interesting properties have been attracted much attention in the field of physics,chemistry, biology,nanotechnogly and material *** synthetic s... 详细信息

关键词： Soc Construction of High-nuclearity 3d-4f metal clusters via anion-template from in situ decomposition of organic ligand

A molten salt route to the synthesis of nano/micro-structured inorganic crystailites with all polar surfaces exposed

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A molten salt route to the synthesis of nano/micro-structure...

中国化学会第五届全国结构化学学术会议

作者： Tao Xu Xi Zhou Zhiyuan Jiang Zhaoxiong Xie Lansun Zheng state key laboratory for physical chemistry of solid surfaces & Department of chemistry,xiamen university,xiamen 361.05,Fujian,

＜正＞As has been well known,many ionic compounds can be described as a number of planes composed of cations and anions stacked *** positively-charged cations and negatively-charged anion planes give result to a normal dipole moment and spontaneous polarization along specific axis in these *** crystal growth,the polar surfaces

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Rapid identification of commercial tablels with odour inspection by modified electrospray ionization mass spectrometry

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Rapid identification of commercial tablels with odour inspec...

13th Asian Chemical Congress

作者： HE,Li-Fang SU,Hai-Feng XIE,Su-Yuan ~* state key laboratory for physical chemistry of solid surfaces and Department of chemistry,College of chemistry and Chemical Engineering,xiamen university,xiamen,361.05,china.

＜正＞A rapid method with odour inspection using modified electrospray ionization mass spectrometry was shown to be effective in identifying the components of commercial tablets（Paracetamol Tablets and Gatifloxacin T... 详细信息

关键词： Medicine tablets Odour inspection Electrospray ionization Mass spectrometry

Multinuclear Nuclear Magnetic Resonance Studies of 〔VS_4 (CuPPh_3)_5 (CuCl) Br_2〕

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Chinese Journal of Structural chemistry 1998年第2期17卷 89-93页

作者： CHEN Zhong YE Jian-Liang CAI Shu-Hui(The Research laboratory of SEDC of Analytical Science for Material and Life chemistry(Department of chemistry, xiamen university, xiamen 361.05)(state key laboratory of Structural chemistry, Fuzhou 350002)ZHENG Fa-Ku Fujian Inst. Res. Struct. of Matter Chinese Academy of Sciences State Key Lab. of Struct. Chemistry Fuzhou 350002 China

The structure, spectroscopic properties and chemical stability of [VS4-(CuPPh3)3 (CuCl)Br2] in CDCl3 solution have been studied by multinuclear NMR tech-nique. Two peaks with relative intensity of 1: 4 are found in the31P-{1H} *** 13C-{1H} and 1H NMR peaks have the same integral intensity ratio. These com-plemented the results of 31P-{1H} NMR. The experimental results demonstrates that the PPh3 ligand bound to Cu(6) is not equivalent with the four PPh3 ligands bound toCu(2) ~Cu (5 )- It affords an evidence that the title compound in the solution keepssimilar structure to solid state.

关键词： nuclear magnetic resonance V-Cu-S cluster transition metal complex

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A physical model study of effect of fracture aperture on seismic wave

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Science china Earth Sciences 2008年第S2期51卷 233-240页

作者： WEI JianXin & DI BangRang CNPC key physical Exploration laboratory,china university of Petroleum,Beijing 102248,china 1. CNPC key physical Exploration laboratory China University of Petroleum Beijing 102248 China

Based on Hudson’s theoretical hypothesis of equivalent fracture model,inserting aligned round chips in solid model can simulate fractured media. The effect of fractures on the propagation of P and S waves can be observed by changing the fracture thickness. The base model is made of epoxy resin,and the material of fractures is a kind of low-velocity mixture containing silicon rubber. With constant diameter and number of fractures in each model,one group of models can be formed through changing the thickness of fracture. These models have the same fracture density. By using the ultrasonic pulse transmission method,the experiment records time and waveform of P and S waves in the direction parallel and perpendicular to the fracture orientation. The result shows that,with the same fracture density,changing fracture aperture will affect both velocity and amplitude of P and S waves,and the effect on P-wave amplitude is much greater than that on the velocity. Moreover,the variation in velocity of S wave is more obvious in the slow shear wave (S2),while the variation in amplitude is more obvious in the fast shear wave (S1). These properties of wave propagation are useful for seismic data processing and interpretation.

关键词： fracture aperture Hudson’s fracture theory fractured model P-and S-wave velocity amplitude

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Shape Evolution of Au-Pd Alloy Nanocrystals from Rhombic Dodecahedron to Trisoctahedron and Hexoctahedron

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Shape Evolution of Au-Pd Alloy Nanocrystals from Rhombic Dod...

中国化学会第六届全国结构化学学术会议

作者： Jia-Wei Zhang,Zhao-Xiong Xie~*,Lan-Sun Zheng state key laboratory of physical chemistry of solid surfaces,department of chemistry,college of chemistry and chemical engineering,xiamen university,xiamen,361.05,china

＜正＞The surface structure controlled synthesis of noble metal nanocrystals（NCs） bounded by high-index facets has become a hot topic due to their potential of significantly improving the catalytic performance in the catalytic *** study reports the preparation of monodisperse Au-Pd alloy NCs with systematic shape evolution from rhombic dodecahedral（RD） to trisoctahedral（TOH）,and hexoctahedral

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