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Clay minerals, such as kaolinite, montmorillonite, layered double hydroxides, are common host materials for intercalation chemistry[4-8].
Kaolinite has a 1:1-type dioctahedral asymmetric layer structure.
The other side of the layer is constituted by a silicate layer structure, where the silicon atoms are coordinated tetrahedrially to oxygen.
The d(001) spacing peak of the intercalation compounds was strong and sharp, and its intensity (cps value) was five times that of the unintercalation kaolinite, which shown that the structure order degree of the kaolinite was improved by the intercalation.
Table 1 Effect of particle size on kaolinite /formamide intercalation reaction Samples IMF19-1 IMF19-2 IMF19-3 IMF19-4 IMF19-5 Size of 50% particles(μm) 0.35 0.75 0.91 1.14 1.33 Size of 90% particles(μm) 0.98 1.55 1.88 3.01 4.72 Mean size(μm) 0.46 0.84 1.05 1.45 2.06 Intercalation ratios(%) 38 79 93 96 96 Conclusions Kaolinite is one of the most common host materials for intercalation chemistry.

Performance Study of Ignition Tube about Shock Overload Wei-li Bai 1,a, Ling-xia Li 2,b, Jing Zhang 3,c 1Shaanxi Applied Physics and Chemistry Research Institute,Xi,an 710061,China 2Shaanxi Applied Physics and Chemistry Research Institute,Xi,an 710061,China 3Shaanxi Applied Physics and Chemistry Research Institute,Xi,an 710061,China aBaiweili8@163.com,b1569186987@qq.com,,c361771875@qq.com Keywords: ignition tube; Free Hopkinson pressure bar；Shock overload; Reliable firing Abstract.
Study results shows that structure design of ignition tube is special,the ability of anti-overload is good.It provided Theoretial Support for design and reinforcement of ignition tube in anti-high-overload.
In order to observe ignition tube inner structure of the shell deformation,the ignition tube were analyzed by X-ray CT chromatographic scanning.Its internal structure is given in Fig.4.
Fig.4 X-ray CT chromatogram of ignition tube under shock overload It is seen from Fig.4.the first charge with electrode plug and bridge wire welding surface contact closely,but the second charge move to the input end,and the density decreases in the output end.There is almost no deformation in input end,but there is very small deformation in output end,Further it suggested that supporting role of electrode plug and its close cooperation with shell is helpful to improve anti-overload of ignition tube.Subtle changes of the internal structure have no effect on reliable ignition of ingnition tube.After radial overload,the performance index of ignition tube didn,t change and ignition tube is still reliable ignition. 3 Conclusion (1)Under the same overload shock and pulse width,when the input end is stressed,the shape size and resistance of the ignition tube change a little,which is uneasy to yield.When the radial is stressed,it cause the greastest change of the shape and resistance of

The results indicate that the NiO particles become open pore structures at a calcination temperature above 500 °C.
For a 1-100 nm material structure the particles have special properties because of the small size effect, the surface effect, the quantum size effect and the macroscopic quantum tunnel effect [13,14].
Open pore structures are present in the SEM micrograph of the NiO synthesized at 500 and 600 °C (Fig. 5d and f).
（In Chinese） [5] Ye Chen, Chang Shu, Chun-Xia Zhang, Xin Ge, Mi-Lin Zhang, Prepatation and supercapacitor properties of nickel oxide, Chinese Journal of Applied Chemistry. 24 (2007) (8) 873-877.
Ramanathanb, Effect of heat treatment on pore structure in nano-crystalline NiO: A small angle neutron scattering study, Journal of Solid State Chemistry. 118 (2008) 1227-1235

Theoretical study on crystal structure and hydrogen storage properties of Sodium hydride Lei Jiehong1,a, Yan Zhengzhou1,b, Duan Hao2,c, and Zhang Yunjuan3,d 1Physics and Electronic Information Institute, West China Normal University, Nanchong 637002, China; 2 Chemistry and Chemical Engineering College, Mianyang Normal University, Mianyang 621000,China; 3 Institute of Atom and Molecule Engineering, Sichuan University, Chengdu 610065, China ajiehonglei@126.com, bblue y985@126.com,cduanhao.ok@163.com, dzhangyunjuan82@126.com Keywords: Density functional theory; crystal structure; hydrogen storage; hydrides.
The density-value x (ρ-x) relationship, the variations of the hydrogen storage properties with different crystal structure were obtained systematically.
Considering sodium hydride has the same properties with lithium hydride, the crystal structure and hydrogen storage properties of sodium hydride were studied in this paper.
In this paper, we constructed the crystal structures with different x values using CASTEP software package [16, 17],.besides, the geometrical structures was studied.
In the following calculations, the optimized structure is used.

Synthesis of a Polysiloxane with High Reaction Activity Chaohong Dong1,2,a, * , Zhou Lu2,b, Ping Zhu2,3,c, Lei Wang2 1College of Textile & Clothing, Jiangnan University, Wuxi 214064, China 2Laboratory of Fiber materials and Modern Textile, the Growing Base for State Key Laboratory, Qingdao University, Qingdao 266071, China. 3School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan, 430073, China adongzhh11@163.com byudija@163.com cpzhu99@163.com Keywords: Polysiloxanes modification，cyclic ether ring-opening, Palladium chloride Abstract.
The structure of PIBMS was characterized by the FT-IR and NMR spectra.
The yield of the reaction was determined using chemistry titration by which the active hydrogen was detected.
The structure of PIBMS was verified by 1H NMR spectrum (JEOL LA500, Japan). 1H NMR (δ in CDCl3) 0.09 - 0.14 (br s, SiMe), 1.64 (qui, 4H, OCH2CH2, J = 7.5 Hz), 1.91 (qui, 4H, CH2CH2I, J = 7.5 Hz), 3.22 (t, 4H, CH2I, J = 7.0 Hz), 3.70 (t, 4H, CH2O, J = 6.0 Hz).

First ferroelectric materials were found in Rochelle salt was in a perovskite structure.
How is the domain structure look like typically in ceramic materials.
Typical perovskite sturucture is always described by the structure of BaTiO3, Figure 1.
Morell, X-ray and neutron diffraction studies of the diffuse phase transition in PbMg1/3Nb2/3O3 ceramics, Journal of Solid State Chemistry 92, 350-361 (1991)
West, Basic Solid State Chemistry, Second Edition,Wiley, (1999)

The research is to qualify that whether the structures change of the ECAE treatment Ti surface after exposure in HF could be associated with the better performance.
Because a change in the in the surface roughness and chemistry was obtained, a significant effect on the surface topography and chemistry was expected in these HF treatment groups.
Besides, the hydrophobicity of surfaces exposed to HF was significantly rising compare with polishing treatment due to the change of surface roughness and chemistry.
In the present study, the pure Ti with ultrafine grain structures produced by ECAE treatment exhibit better surface wettability and higher surface energy than coarse grains.
Besides, the topography parameters showed a significant increase of surface roughness both coarse grains and ultrafine grained structure after the HF treatment.

For each of these applications, aspects such as surface morphology, crystallinity and chemistry of the titania-based materials are the key parameters to be settled for the process optimization.
Anatase TiO2 phase structure and crystallinity of TiO2 nanotubes supports the good performances of the nanostructured materials.
High catalytic activity of TiO2 nanotubes is due to their nanotubes and anatase TiO2 phase structure.
FESEM analysis showed that the nanomaterials are nanotubes, nanorods and nanoparticles with anatase TiO2 phase structure.
Journal of Photochemicatry and Photobiology A: Chemistry, 203 (1), pp. 24-31

Surface Modified Nano Calcium Oxide For Base Heterogeneous Transesterification Of Kappaphycus Alvarezii Seaweed To Biofuel Abdul Rahim Yacoba,Nur Fatin Sulaimanb, and Maimoonah Khalid Qasimc Chemistry Department, Faculty of Science, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia amanrahim@kimia.fs.utm.my, beriqa89@yahoo.com,cmaymoona_chemistry@yahoo.com Keywords: Hydration-dehydration, Nano structured CaO, Transesterification Abstract.
Characterization of Prepared Nano structured Calcium Oxide.
Basic Stength of Nano structured Calcium Oxide by Back Titration Method.
Basic strength of Nano structured Calcium Oxide.
Journal of Physical Chemistry B.

Study on Corrosion Tendency Evaluation of Microstructure in Welding Heat Affected Zone of Austenitic Stainless Steel Dong Jin1,a , Bo Zhao1,b,*, Lianghuai Tong2,c, Qiang Dai1,d, Yan Rong1,e, Guanghui Zhang3.f 1Institute of Chemistry, China Special Equipment Inspection and Research Institute, Beijing, P.R.
In this paper, the simulated welding structure in different area of heat affected zone (HAZ) of S30408 austenitic stainless steel are prepared, and the corrosion resistance properties are evaluated by electrochemistry method and micro-morphology analysis.
The result shows that the corrosion resistance of different areas of the HAZ presents different performance, and the corrosion resistance of the area with the highest heating temperature of 1000-1100 ℃ is slightly lower than that of other areas.The micro-morphology shows that the pitting of the simulated structure in the HAZ have a certain orientation.
Tab.2 The fitting data of the potentiodynamic polarization curves in Fig.1 Type of Structure E (V) vsSCE SCE Icorr(A/cm2) βa(V) βc(V) Heating Temperature 700℃ -0.25616 2.2174E-07 0.3842 0.1438 800℃ -0.23057 4.6765E-08 0.2553 0.0799 900℃ -0.27431 1.3954E-07 0.3151 0.0939 1000℃ -0.30567 5.2243E-07 0.1298 0.1197 1100℃ -0.27943 5.8425E-07 0.3092 0.1381 1200℃ -0.23584 1.5600E-06 0.1356 0.2853 1300℃ -0.25971 1.4266E-07 0.9380 0.0947 Type of Structure -0.22613 5.4771E-07 0.1105 0.1168 It can be seen that the cathodic polarization of the simulated weld microstructure of S30408 stainless steel was under typical activation control, while the anodic polarization was under diffusion control.
Materials Chemistry and Physics, 2021, 270124826