Search results

Sonochemical Synthesis and Characterization of Bismuth Aluminate Nanocrystals Zhifu Wu* Sujuan Li School of Chemistry and Chemical Engineering, Anyang Normal University, 455002, Anyang, Henan, P.
XRD patterns of the nanoparticles dried at (a): 50oC, (b):150oC, (c):300oC, (s): a known pattern of bismuth aluminate The results obtained suggested that bismuth aluminate was synthesized by drying at 50oC and it’s crystal structure would be demolished when the drying temperature rose to 150oC, the product was more complicated when the temperature reached 300oC.
From above analysis, we deduced that the crystal structure of bismuth aluminate compounds might has striking similarities with the crystal structure of montmorillonite.
Coordination chemistry of metals in medicine:target sites for bismuth.
Coordination Chemistry Reviews.185–186. 1999. 689–709 [3] Wang, K.

The chemical composition of RH varies depending on the type of paddy, climate and geography, soil chemistry, sample preparation, analysis method [1].
The obtained samples were characterized by XRD to evaluate the structure and phase of nanosilica whether crystallite or amorphous phase.
In the present study, the amorphous nanosilica pattern was observed for all acid-treated samples without any NaOH addition.Amorphous nanosilica structure is generally formed at a synthesis temperature below 800 °C [5].
M.Barakat, Effective and highly recyclable ceramic membrane based on amorphous nanosilica for dye removal from the aqueous solutions, Arabian Journal of Chemistry 9 (2016) 287-296
Du, Preparation and Characterization of Nanosilica from Rice Husk Ash By Chemical Treatment Combined With Calcination, Vietnam Journal of Chemistry 55(4) (2017),455-459

The existing classifications of eutectic structures are mostly based on dependence of the morphological and dimensional features of the co-crystallizing phases on the cooling conditions of the melt during its crystallization [12].
It should be noted that in accordance with the dimensions of the ionic radiuses of Y3+ 0,097 nm and Ca2+ 0,104 nm the greatest effect of the ZrO2-x stabilization in the tetragonal structure could be expected with the combined use of these oxides.
Pechenkov, Monotectic crystallization of melts of the system ZrO2-Al2O3, Physics and Chemistry of Glass, 32(4) (2006) 656-665
Mazur, Structure of eutectic alloys, Metallurgy, Moscow, 1978
Stryukov, Growth of profiled oxide eutectics by the Stepenov method (EFG), in: Physical chemistry and technology of inorganic materials.

Focus of these investigations was the correlation of rheological properties with the molecular allignment due to shear and the influence of the chemical structure concerning friction and wear.
Watanabe, „Physicochemical Properties and Structures of Room Temperature Ionic Liquids. 2.
Ito, „Room temperature ionic liquids of alkylimidazolium cations and fluoroanions,“ Journal of Fluorine Chemistry, Bd. 105, Nr. 2, pp. 221-227, #sep# 2000
Jeffrey, „Surface Chemistry and Tribological Behavior of Ionic Liquid Boundary Lubrication Additives in Water,“ in ACS Symposium Series, Bd. 901, American Chemical Society, 2005, pp. 244-253--. [18] T.
Torres, „Influence of chloride, water, and organic solvents on the physical properties of ionic liquids,“ Pure and Applied Chemistry, Bd. 72, Nr. 12, pp. 2275-2287, #jan# 2000

From the measured values of total porosity ε can be concluded that all the deacidification methods take effect change in pore structure.
Due to treatment, decreased adhesion tension for water, samples increased their dispersive nature (hydrophobicity), and the structure is accompanied mostly by a deepening contraction of the samples.
Cellulose Chemistry and Technology (2006), vol. 40, no. 9-10, s. 705-717
Cellulose Chemistry and Technology (2005), vol. 39, no. 3-4, s. 277-302
Češek, Hypermolecular structure of lignocellulosic materials and their properties.

The mixed oxygen and steam atmosphere exhibited a tightly tailored micropore structure.
The PACs’ pore structure was characterized by the nitrogen adsorption measurement.
Results and Discussion Pore Structure Characteristic.
Xu, Hydrogen production from CO2 reforming of methane over high pressure H2O2 modified different semi-cokes, Journal of Industrial and Engineering Chemistry, 20 (2014) 2948-2957
Gao, A novel porous carbon material made from wild rice stem and its application in supercapacitors, Materials Chemistry and Physics, 213 (2018) 267-276

The structure of fibri-form silica is stable, no phase transformed from 50 to 1200 ºC.
Firstly, H+ attacked the outer OH of brucitic-like octahedral sheet in chrysotile structure.
The structure of fibriform silica was stable, no phase transformed from 50 to 1200 ºC.
Analytical and Bioanalytical Chemistry, Vol. 376. (2003) No. 5, p 653 [5].X.R.
Journal of Physics and Chemistry of Solids, Vol. 72 (2011) No. 9, p 1015 [22].

High anionic conductivity of solids with different structure A.B.
Gnedenkov 1 Institute of Chemistry of FEB RAS, 159 Pr. 100-letiya Vladivostoka, Vladivostok, 690022, Russia ae-mail: pab@ich.ru Keywords: impedance spectroscopy, superionic conductors, fluorine materials, anion conductivity.
Investigated systems including pure CsSb2F7, KSb2F, related solid solutions Cs(1–x)KxSb2F7 (0.1 ≤ x ≤ 0.65) and some ionic materials with fluorite structure PbF2−BiF3−K[Na]F were studied.
The current system has complex structure formed in MF–SbF3 (M = K, Cs) systems related to fluorine antimony family (MSb2F7, K2Sb3F11, M3Sb4F15, MSbF4 и M2SbF5) [7].
Hagenmuller, Fast ionic conduction of fluorides with the fluorite-type structure, J.

The results showed that the electrophoretic deposition is a favorable technique to make a bio coating on Ti-6Al-4V substrate with excellent properties and structure for applications biomedical.
The structure of bio coatings was homogenous when coating with the condition at 20 V for 4 min. 3.
[7] Karin Eufinger; ״Effect of deposition conditions and doping on the structure, optical properties and photocatalytic activity of d.c. magnetron sputtered TiO2 thin films״; Ph.D. thesis University of Wetenschappen: Natuurkunde, (2007)
[13] Satenra Kumar,T.S.N.Sankara Narayanan and S.Ganesh Sundara Raman;״Thermal oxidation of Ti6Al4V alloy :Microstructural and electrochemical characterization״; Material Chemistry and Physics Vol. 119, (2010)P.337-346
Nakai, Synthesis and characterization of hydroxyapatite/TiO2 coatings on the β-type titanium alloys with different sintering parameters using sol-gel method, Protection of Metals and Physical Chemistry of Surfaces, Vol. 54, No. 3, 2018, pp. 457–462

Using these structures as the starting point, more accurate optimized structures are obtained using MP2 with the 6-311++G(3df, 3pd) basis sets, which include additional polarization and diffusion functions.
The stochastic search starts from a randomly generated structure and is terminated when the latest P AFIR paths do not update the lowest M structures.
We employed GRRM17 [16] for the SC-AFIR algorithm for the equilibrium structure search and Gaussian16 program [28] the electronic structure calculations.
VIII Fig. 1: (Color online) Optimized structures of glycine conformers.
Here, wi is the degeneracy for structures for the stereoisomer.