Copper-sulfur cluster ions were produced by laser ablation on solid samples: (1) a mixture of copper and sulfur powder, (2) cuprous sulfide compound, (3)cupric suffide compound, respectively. Two main series of cluster ions were found: (a) [Cu(Cu2S)n...

This note mainly reports a successful preparation of a alumina-pillared layered titanate with a high interlayer spacing through a step-wise exchange process. X-ray diffeaction patterns indicate that the resultant alumina-pillared layered titanate has...

It is found that the SnO_2 nanometer particle modified by chemical methods on its surface with a layer of steric acid molecules has a significant red shift of optical absorption band edge and clear photoluminescence at room temperature, which is in c...

Acid-base properties of ZrO_2 pretreated at 873 K have been studied in relation to a typical acidic SiO_2-Al_2O_3 and a typical basic M catalysts by exadring the TPD behavior of NH_3, CO_2, pyridine, Et_3N, and phenol. The weakly acidic property of ...

Dual adsorption of NH_3 and CO_2 has been used to study the acid property of ZrO_2 in relation to its base property by TPD and IR spectroscopy. It is found that preadsorbed NH_3 (or CO_2) has no inhibitory but a promotive effect to a postadsorption o...

The adsorption and insion of hydrogen atom on Pd(997) step surface was studied by the pair-potential method. Calculated results show that the most stable adsorption state is one of the hydrogen atoms being adsorbed under the step. New vibration modes...

Hydrogenated carbon cluster ions (C_nH~+_m) were produced by direct laser ablation of solid aromatic compounds and studied with a time-of flight mass spectrometer. In the low mass region (n=32-56), the hydrogenated carbon clusters were obtained with ...

The electronic structures of cluster compounds [M_4S_2](M=Co, Nb) were calculated by using EHMO method. According to the comparision of total energies, orbital levels, charge distributions and Muiliken bond orders before and after including 3d orbita...

Electrochemical modification of metal surface is an effective means for anticorrosion brought forward recently. The moamcation of porphyrin on iron was investigated in this work. The modified layer was formed on industrial pure iron surface using cyc...

Tetridotoxin(TTX)、Sexitoxin(STX) are important tool-drugs in clarifing the sodium channel structure. The parameters of electronic structure、 molecular geometry and molecular coallguration of TTX、STX. and its derivatives were studied.
It is shown that ...

In this paper, laser induced coordinative reactions between C_(60) and M(CO)_6 (M=Cr, Mo and W) are carried out and complexes (η~2-C_(60)) M(CO)_5 are formed. The dymamics of reaction are also tentatively discussed.

The phase transitions of 2-methoxycinnamic acid, 3-methoxycinnamic acid, 4-methoxycinnamic acid and 4-hydroxy-3-methoxycinnamic acid were studied by DSC. The thermodynamic parameters of phase transitions for these compounds are reported in this paper...

Based on neighbouring group participation, we have proposed a bi-bridge reaction mechanism, i.e. in the path of the reaction, there is a bi-bridged structure with two bridging atoms across a single carbonus-cacbon bond. We have studied it by ab initi...

The zeta-potential of montmorillonite-water colloid systems of different districts and distinct types are different. In this study the zeta-potentials were determined for montmorillonitewater colloid system of different districts and types. The relat...

It is well known that γ-Fe_2O_3 is a very active and selective catalyst for okidative dehydrogenation ofbutene to butadiene. It is hard, however, to distingulsh between ferrite spinels and therefore to identify its existence in ferrite-ferric oxide c...

This paper presents the study of the adsorption capacity of some anions on RuO_2·TiO_2 by surface enhanced Raman scattering (SERS). We deposit silver on the surface of RuO_2·TiO_2 to obtain a SERS-active surface. Experimnent indicates that the adsorp...

Atomic force microscope(AFM) can be used to investigate the surface structuxes of different kinds materials, and N-(4-nitrophenyl)-(L)-prolinol (NPP), as an organic second-order nonlinear optical crystal, has very large nonlinear efficiency. With our...

The results obtained from the measurements of cotmterion association degree using ion selective electrode with improved experiment techinique and equation for CTMAB micelle system are in accordance with that calculated by electrochemical theory of mi...

HeI ultraviolet photoelectron spectra of some thienyl polyethylenic dimethyl malonates compoundsf(1), (2), (3)(to see Fig.1) have been given in this paper. The assignment of the spectra are also done using the optimized MNDO molecular orbital calcula...

1:12 phosphomolybdic anion doped polypyrrole film electrode was characterized by in-situ UV-vis spectroelectrocheforstry, X-ray photoelectron spectroscopy(XPS), scan electronic microscopy(SEM) and electron spin resonance(ESR) spectroscopy.