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A Novel Polymer Supported Catalyst for Preparation of Sydiopolystyrene Taiqi Liu1,2,a , Ning Gao1,b,Yue Wang1, Liangfa Gong1, Youliang Hu2 1Research Center of Ecomaterial , Beijing Institute of Petrochemical Technology, Beijing, China 2State Key Laboratory of Engineering Plastics, Institute of Chemistry, the Chinese Academy of Sciences, Beijing, China aliutaiqi@bipt.edu.cn, bgaoning@bipt.edu.cn Keywords:Polymer supported catalyst; TiCl4; sydiopolystyrene; poly(styrene-co-ethylene); polymerisation.
Results and discussion Property of coordinated catalysts for olefin polymerization have great relation with their structure[1,2,3], in addition to syntheses of new catalysts with a design of new ligands, the immobilization, which immobilize a catalyst on a support, is an important method both in theoretical study and industrial applications.
Sch. 1 Polymer catalyst structure Fig. 1 IR spectra of Polymer catalysts IR spectra of Polymer catalysts I(PAN/TiCl4=1:2) and II(PAN/TiCl4=1:1) show that when the ratio of PAN/TiCl4 is 1/1(mol./ mol.), the IR spectrum shows two peaks, 2233cm-1 and 2277cm-1, this means that, there is some free acronitrile group left which shows a CºN stretching at 2233cm-1.The polymerisation result shows that the polymer catalyst have a much higher catalytic activity than that of TiCl4 in the preparation of sydiopolystyrene(Tab. 1), especially, it can be used to prepare a styrene rich poly(styrene-co-ethylene), the resulted poly(styrene-co-ethylene) is a crystalline polymer show a Tm (248℃) which is much lower than that of a homo syndiopolystyrene.
Fig. 2 Structure of the polymer catalyst Based on the results both of the experiment and the molecular simulation, we can give a conclusion that the polymer backbone stabilized the central metal Ti and make it difficulty of the Titanium to be reduced to a TiⅡ complexes, and the later shows no activity in the polymerisation.
[2] D W Guo, X Z Yang, L Yang, et al: Journal of Polymer Science: Part A: Polymer Chemistry.

Then the electronic structure was calculated for every selected cluster.
More correct results may be obtained when using of quantum chemistry during the geometry optimization procedure.
But in spite of a qualitative estimates of the calculated electronic structure, we can infer that the structures associated with clusters GBSi69O3Cn and GBSi69O4Cn can be used as model structures to study the processes for compensation of oxygen-containing defects by carbon atoms at the GBs in poly-Si and thermal donors in silicon.
Conclusion A study of the atomic configurations and electronic structure of the "core" of Σ5 θ = 37° [001]/(130) tilt grain boundary in poly-Si, contaminated by oxygen in the form of SiO3 or SiO4 complexes with different numbers of the incorporated carbon atoms was performed by a quantum chemistry method in the cluster approximation.
Chemistry Vol. 10 (1989), p. 209

The surface structure, roughness and the chemical composition of elements, were analyzed by x-ray diffraction(XRD),atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS).
The experimental parameters of PIII Base vacuum （Pa） Work vacuum （Pa） Implanted voltage （kV） Implanted current （A） Implanted time （min） 2.5×10-3 1.4 14 0.64 180 2.2 Characterization of the Ti-O film To determine the surface morphology,surface crystal structure,the composition and chemistry,the Ti-O films and the PIII treated Ti-O films were characterized by XRD, AFM and XPS.The amino group on modified Ti-O films can be ratioed by Acid Orangell. 2.3 Detection of Ln and Fn The Ti-O films surfaces to which biomolecules were immobilized on with Ln and Fn .
Results and Discussion Fig.1(a) shows the crystal structures of the Ti-O films before and after PIII.
The crystal structure of the Ti-O film has no change after implantation.
[J]: Chemistry, Vol. 68(2005),P.45

Furthermore, the density of Ag nano columnar structure decreased with the increase of depositing angle.
However, there is few paper related to Ag/ZnO core-shell structure for MEF application.
A transmission electron microscopy (TEM, CM200-FEG) equipped with energy dispersive spectrometer (EDS) was used to observe the crystal structure and analysis the elemental distribution of Ag/ZnO core-shell structure, respectively.
The results showed the tilt angle and the diameter of the Ag nano columnar structure increased with the increase of depositing angle, but the density of this structure decreased in same time.
R.; Zhang, Yongxia; Gallagher, Theresa; Baillie, Les; Geddes, Chris D Analytical Chemistry. 80(11),(2008)4125-4132

Fig. 4 resumes the low voltage IV characteristics obtained on the EL structures prepared by spin-coating on both p and n type Si substrates.
Dal Negro, NATO Science Series, II.Mathematics, Physics and Chemistry - Vol. 93 (Kluwer Academic Publishers, 2003), p. 145
Dal Negro, NATO Science Series, II.Mathematics, Physics and Chemistry - Vol. 93 (Kluwer Academic Publishers, 2003), p. 191
Dal Negro, NATO Science Series, II.Mathematics, Physics and Chemistry - Vol. 93 (Kluwer Academic Publishers, 2003), p. 197
Dal Negro, NATO Science Series, II.Mathematics, Physics and Chemistry - Vol. 93 (Kluwer Academic Publishers, 2003), p. 223

Synthesis of Molybdenum Trioxide: Structure Properties and Sensing Film Preparation Ungkana Inpan1,a, Pimpan Leangtanom1,b, Pusit Pookmanee2,c, Sukon Phanichphant3,d, Viruntachar Kruefu1,4,e* 1Nanoscience and Nanotechnology Program, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand 2Program in Chemistry, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand 3Materials Science Research Center, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand 4Program in Applied Physics, Faculty of Science, Maejo University, Chiang Mai 50290, Thailand aungkanainpan@outlook.com, bpreawleangtanom@gmail.com, cpusitster@gmail.com, dsphanichphant@yahoo.com, ev_viruntachar@hotmail.com Keywords: Molybdenum Trioxide; Nanoflakes; Sensing Film Abstract.
All of these achievements inspire us to synthesis nanoflakes structure of MoO3 to apply for gas sensor application.
At no annealed, an amorphous structure material was obtained.
Upon annealing at 500°C, XRD diffraction pattern showed orthorhombic phase structure of MoO3 (space group Pbnm; lattice constants a= 0.3962 nm, b= l.3858 nm, c = 0.3697 nm) that is matched well with the JCPDS file no. 05-0508.
Tyagi, Nanoplatelet structures of MoO3 for H2 gas sensors, IEEE, (2011) 514-517

The presence of additional elements in the Al-Si alloy system allows many complex intermetallic phases to form, which make characterisation non-trivial due to the fact that some of the phases have either similar crystal structures or only subtle changes in their chemistries.
Aluminium has a face-centered cubic structure and silicon has a diamond cubic structure [5], which results in an ambiguous phase mapping when using crystallographic information alone, as shown in Figure 1c.
The revised phase mapping, using both chemistry and crystallography is shown in Figure 1d.
The crystal structure of Al3Ni is orthorhombic, which is more difficult to analyse.
Mondolfo: Aluminum Alloys, Structure and properties, Butterworths, 1976

Introduction Civil structures of nuclear power plants (NPP) are beyond doubt among the structures meeting the most strict criteria in terms of reliability, serviceability and durability of all.
The specimens were extracted from the structure during installation of new technological devices.
Dwaikat, High-temperature properties of concrete for fire resistance modeling of structures, ACI Mater.J. 105 (2008)
Naus, The Effect of Elevated Temperature on Concrete Materials and Structures— A Literature Review, The effect of elevated temperature on concrete materials and structures-a literature review. (2006)
[10] Eurocode 2, EN, 1992-1-2: design of concrete structures.

To protect the top surface and active structures of the devices a water-based protective vinylacetate co-polymer coating is applied.
The process chemistry is based on CF4, which was found to be the easiest starting point in the development [4, 5], with respect to available literature and safety concerns with alternative fluor containing compounds and the overall main reaction is shown in Eq. 1 and 2.
Key parameters such as temperature, gas flow, pressure, time and chemistries, preconditioning chemistries, chuck and source temperatures, and mounting principles are under study and will be discussed elsewhere.
Summary It was shown that a remote RF-based plasma tool, using fluorine-based chemistry, has the potential for cleaning dies to improving die performance.

The Influence of Particle Characteristic of Manganese Dioxide on Performance of Spinel Lithium Manganese Oxide Wei Li1,a, Wen-huai Tian1,b and Lu Qi2,c 1Department of Materials Physics and Chemistry, School of Materials Science and Engineering ,University of Science and Technology, Beijing,100083, China 2New Energy Materials and Technology Laboratory, Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871,China aliweisyn@163.com, bwenhuaitian@sina.com, cqilu@pku.edu.cn Keywords: Power Lithium-ion Battery, Spinel Lithium Manganese Oxide, Chemical Manganese Dioxide Abstract.
These methods include solid state reaction method, molten salt method [2], Penchini method [3], sol– gel method, soft chemistry method.
The structure of dioxide manganese is critical patter in this method.