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Hydrogen Distribution in Partly Desorbed MgH2 Samples LUSHNIKOV Stepan Alexandrovich1,a*, FILIPPOVA Tatyana Victorovna1,b, BOBRIKOV Ivan Anatolievich2,c. 1Department of Chemistry Lomonosov Moscow State University, Leninsky Hills 1/3, 119991 Moscow, Russia 2Joint Institute for Nuclear Research, ul.
The distribution of hydrogen atoms in the structure of the samples is comparable at both temperatures.
And recently in review [2] was described β-MgH2 form with modified CaF2 structure (Pa-3, No. 205).
In most cases hydrides at low temperature have ordered hydrogen atoms in the structure.
Bottger, K.Yvon, Structure of the high-pressure γ-MgH2 by neutron powder diffraction, J.

Since the magnetic characteristics of sintered ferrite products are largely determined by the microstructure, it is of interest to study the patterns of formation of their grain structure (grain size distribution, the degree of grain size) during sintering in various regimes.
Masilko, Structural, magnetic, dielectric, and electrical properties of NiFe2O4 spinel ferrite nanoparticles prepared by honey-mediated sol-gel combustion, Journal of Physics and Chemistry of Solids 107 (2017) 150-161
Badshah, Synthesis and investigation of structural, magnetic and dielectric properties of zinc substituted cobalt ferrites, Journal of Physics and Chemistry of Solids 123 (2018) 36-42
Khan, Al doped spinel and garnet nanostructured ferrites for microwave frequency C and X- band applications, Journal of Physics and Chemistry of Solids 123 (2018) 260-265
Randrianantoandro, Microstructural and magnetic characterization of Ni0.5Zn0.5Fe2O4 ferrite nanoparticles, Journal of Physics and Chemistry of Solids 129 (2019) 1-21

In order to expand upon the emergent chemistry of templated metal selenate, a new compound using piperazinediium as a template and cobalt as a transition metal has been synthesised.
Structure Determination.
Results and discussion Structure description.
Two free water molecules complete the structure.
Fig. 1: Projection of the crystal structure along the c axis.

Effects of surfactant concentration on the microstructures of TiO2 hollow spheres by hydrothermal method Lian-Ying Lua, Lin Xub, Ting-Ting Yinc, Guo-Hong Wang*d College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China allyhbhx@sina.com, b xulin0330@126.com, c 7356583@qq.com, dwanggh2003@163.com Keywords: CTAB, Glucose, TiO2, Hollow spheres Abstract.
This synthesis route may also extend to the preparation of hollow structures of other metal oxides.
Some cavities were occasionally found in some broken microspheres, indicating the structure of hollow spheres.
Ti(Ⅳ) on the surface of carbonaceous polysaccharide microspheres reacted with -OH to yield an incompact titanium dioxide shell whiles the structure like Ti-O-C.
This synthesis route may also extend to the preparation of hollow structures of other metal oxides.

The novel structure was confirmed by fourier transform infrared spectra (FT-IR), Transmission electron microscopy (TEM), and thermogravimetric analysis (TGA), and the superior magnetic property was maintained and helped the material to separation and recycling.
On the other hand, hyperbranched polyamidoamine have many functional groups and large openings in the molecular structure and can be applied to supramolecular chemistry fields, such as adsorption and catalysis.
FT-IR is considered as the effective characterization methods to characterize the chemical structures of hybrid materials.
The morphology structures of Fe3O4@SiO2-h-PAMAM-CD nanoparticles are characterized as the core-shell structure by TEM, which is shown in Fig 3.
(a) (b) Fig.5 (a) Uv-vis spectra of phenol (25mg/L) by addition of 5mg Fe3O4@SiO2-h-PAMAM-CD and (b) phenol adsorption by Fe3O4@SiO2-h-PAMAM-CD as a functional of time Summary A novel β-CD modified Fe3O4 MNPs with core-shell structure was prepared for the adsorptive removal of phenol from aqueous solutions due to host-guest interactions between β-CD and phenol.

General Chemistry: An Integrated Approach. 2nd edition.
In X-Ray Methods in Corrosion and Interfacial Chemistry. 1992: The Electrochemical Society
Advanced Inorganic Chemistry, Wiley, 1999, 6th Edition, 625-9
Physical Chemistry Chemical Physics, 2009; 11 (6): 975–83
Corrosion and Surface Chemistry of Materials, CRC Press, USA, 2007

Microhardness testing was adopted to characterize created structure mechanical properties on the microscopic level.
XRD analysis also show a presence of Mg, Zn and small amount of MgO in the material structure.
Powder particle boundaries were the weak place of the structure and the powder particles transcrystalline fracture was limited with the hardly deformable HCP lattice structure with only a small number of active slip systems (only 1 at the room temperature) [14].
Coalescence of the microscracks resulted in the Laves phase fracture. taking into account the coherent or semi-coherent interface between Mg and MgZn2 and the same HCP structure of Zn and Mg, it can be assumed that the interface between MgZn2 and Zn is at least semi-coherent as well [12, 15].
Vojtěch, Preparation and characterization of porous zinc prepared by spark plasma sintering as a material for biodegradable scaffolds, Materials Chemistry and Physics, 203 (2018) 249-258

Gel time, apparent activation energies for curing reaction, impact strength, crystal structure and thermal resistance were studied.
Fig. 1 Structure of starch based phenolic resin.
The changes of these typical crystal peaks of A-type structure confirmed the reaction of starch.
Dispersion structure of starch based phenolic resin.
The dispersion structure of starch based phenolic resin was characterized using electron microscopy.

Study on Preparation and Mechanical Intensity of Nano-Mg(OH)2/Tussah Silk Fibroin Composite Membrane Xiaoxu Xu Eastern liaoning university, dandong 118000, China 3x.931@163.com Keywords: Nano-Mg(OH)2; Tussah silk fibroin; Preparation; Structure Abstract.
Moderate nano-Mg(OH)2 by the crystalline structure of silk fibroin transformation from silk I to II.
Generally believed that the wire is known as two kinds of crystal structures, namely Silk I and Silk II, which Silk I main diffraction peaks of 12.2 ° and 28.2 °, while the main peak Silk II to 18.9 ° and 20.7 ° around .
Nano-Mg(OH)2 of the accession of the crystalline structure of silk fibroin from the Silk II to Silk I transformation crystalline is improved.
Moderate nano-Mg(OH)2 to join, make sf film compound of crystallinity structure to the silk from silk I transformation, improve the crystalline II, but with the nano-Mg(OH)2 levels of further increases, it will reduce the crystallinity of film.

B.Liao also reported similar results on the La2MgNi9 alloy, namely with PuNi3 type structure and a large capacity around 400 mAh/g [5].
In our study, the effect of annealing treatment on the crystal structure and electrochemical performance was investigated.
The variation of the phase structure before/after cycling was examined by XRD.
Result and discussion Crystal structure.
Eyring (Ed.), Handbook on the Physics and Chemistry of Rare Earths, Elesvier, Amsterdam, 1995, p. 133