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Nickel hydroxide crystal structure was analyzed by infrared spectroscopy (670 FT - IR, Nexus) and X-ray diffraction (D8 Advance, Bruker-AXS).
These structures differ from each other in terms of their crystal structure, short-range structure and degree of hydration [19].
As α- Ni(OH)2, β polymorphic form crystallizes in hexagonal system with the brucite type structure.
Petrov, Analytical chemistry of zirconium and hafnium, Ann Arbor, London, 1969, p.8
Nicholls, The chemistry of iron, cobalt and nickel, Pergamon, Oxford, 1973, p. 1128

The next stage of the study was to consider the possibility of the oxidation reaction of amorphous coke with water, taking into account that the amorphous coke has empirical formula С28H14 and a structure similar to the structure of coronene (Fig.1) [17].
Fig. 1. – The elementary structure of coke The computation was performed using the PM3 method.
Coke with the amorphous structure is formed from aromatic and diene hydrocarbons.
Mortimer, Mathematics for Physical Chemistry,  Elsevier (2010)
Semchenko, Physical Chemistry (Vysshaya Shkola, Moscow, 1988) [in Russian].

The perovskite-type oxide with general formula of ABO3 is frequently encountered structure in inorganic chemistry, and this structure can accommodate most of the metallic ions in the periodic table with a significant number of different anions.
The single-phase LaCoO3 with perovskite structure was built ultimately after 850.
Fierro, Chemical structures and performance of perovskite oxides.
Tascon, Structure and reactivity of perovskite-type oxides.
Journal of Organometallic Chemistry, 1986, 326(2): C92-C93 [14] Masoud Salavati-Niasari, Zeinab Fereshteh, Fatemeh Davar.

Fabrication and Characterization of CeO2-NiO/SiC Membranes for Hydrogen Permeation Jihye Parka, Miewon Jungb School of Biological Sciences and Chemistry / Institute of Basic Science, Sungshin Women’s University, Seoul, 142-732, Korea amabbak110@sungshin.ac.kr, bmwjung@sungshin.ac.kr Keywords: Hydrogen permeation, SiC, CeO2-NiO, Sol-gel process, Hot-Press Sintering Abstract.
From the refinement of the crystal structure, the SiC peaks are the highest intensity among the phases including the hexagonal structure of α-SiC (JCPDS file No. 01-074-1302) with lattice constant of a = b = 0.308 Å and c = 15.11 Å.
Also, CeO2 of fluorite structure [13] (JCPDS file No. 01-089-8436) have cubic crystal system, whereas NiO (JCPDS file No. 00-044-1159) have a hexagonal (Rh) structure.
Fig. 5 (a) illustrates that all the CeO2-NiO/SiC membranes are analyzed as type IV isotherm with a hysteresis loop defined by IUPAC (International Union of Pure and Applied Chemistry).
Based on the results of BET surface area (m2/g) by N2 adsorption-desorption isotherms as shown in Fig. 5(a), all the CeO2-NiO/SiC membranes are mesoporous as pore structure and the BET values increase with increasing contents of the CeO2-NiO mixed oxides.

Introduction It is one of the most challenging goals of synthetic coordination chemistry to achieve control over the stereochemistry of metal complexes.
The molecular structures of Schiff base compounds were confirmed by 1H NMR.
The chemical structures and abbreviations of these ligands and metal complexes were showed in Fig. 1.
Chemical structures and abbreviations of Schiff bases and metal complexes.
In order to investigate the characteristic substituted groups and complexation with metal ions in molecular structures, we have measured IR spectra of these compounds in KBr plate, as shown in Fig. 3.

Used in the construction, repair and reconstruction of buildings and structures non-curing sealants must meet the following requirements [4-7]: – to prevent possible negative environmental impact, for example, penetration or leakage of hazardous materials and gases, corrosion etc.; – to contribute to simplification of the structure, as well as provide increased resistance to dynamic impact; – to provide optically (aesthetic) perfect surface of visible part of joints and junctions within manufacturing tolerance.
The exclusion is the asbestos-filled composite, due to the filler's fibrous structure.
The grain- and rhombohedral-structure fillers (calcium carbonate and dolomite) disperse much easier than those having flake and fibrous structure.
Kirpichnikov, Chemistry and manufacture of synthetic rubber, Khimiya, 1987
Russian Journal of Applied Chemistry, 86 (2013) 1287-1291

Preparation of Mo–Fe/SiO2 and Catalytic Selective Oxidation of p-Xylene Yanqiu Huang1, Zili Liu2, Jie Liu1, Zuzeng Qin1,a, Jinwen Wang1, Huaiyou Wen1 and Kedi Yang1 1School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, China 2School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China aqinzuzeng@gxu.edu.cn Keywords: p-Xylene; Terephthalaldehyde; Catalytic Selective Oxidation; Mo-Fe/SiO2 catalyst Abstract.
The effect of calcination temperature on the crystal structure, among other properties, was also studied (Fig. 2).
TG(A)-DTG(B)-DSC(C) curves of precursor of the catalysts Analysis of Mo-Fe/SiO2 catalyst crystal structures XRD was utilized to analyze the Mo–Fe/SiO2 catalyst crystal structures (Fig. 3).
The result indicates slight variations in the crystal structures of 15% Mo/SiO2, 10% Fe/SiO2, and 15% Mo–Fe/SiO2 compared with SiO2.
The three former compounds have amorphous structures because no significant crystal diffraction peaks were observed in the XRD spectrum.

In this framework, the advances performed in silicon surface chemistry allowed for the attachment of different functional groups and opened the way for the use of silicon substrates for building stable and reusable sensors [2].
In addition, the use of porous silicon (PSi) structures allowing for an increased surface interaction area, can enhance the detection signal significantly [3].
Conclusion GlyCysGlyCys peptide was covalently incorporated into PSi structure using multi-step chemistry consisting of thermal hydrosilylation of undecylenic acid, activation of acid terminated surface by formation of succinimidyl ester, GlyCysGlyCys anchoring by amidation reaction.
However, the large area of the PSi structure did not increase the detection efficiency.
We are currently testing open structures such as silicon nanowires to avoid pore walls depletion.

The structure laminar diffusion flame Figure 2 is laminar diffusion flame structure which is formed by concentric jet characteristics.
The above is theoretical laminar combustion flame structure, but laminar combustion flame structure simulated is different of theoretical actually because of a lot of unstable factors, such as noise affecting the flame structure, as shown in figure 3.
[7] E W Kaiser, T J Wallington, M D Hurley, “Experimental and modeling study of premixed atmospheric-pressure dimethyl ether-air flames,”Journal of Physical Chemistry A, vol.104,pp.8194-820 , 2000
[9] A Terrill，Juan Wang, Cool, “Photoionization mass spectrometry and modeling studies of the chemistry of fuel-rich dimethyl ether flames, ” Proc.
Laminar diffusion flame structure actually simulated (c)v=0.3m/s,ttop=1160K (d)v=0.4m/s,ttop=1210K (a)v=0.1m/s,ttop=1190K (b)v=0.2m/s,ttop=1230K (e)v=0.8m/s,ttop=1240K (f)v=0.9m/s,ttop=1260K (g)v=1.0m/s,ttop=1210K (b)v=2.0m/s,ttop=1300K Fig. 4.

Yaremchenko: Physics, Chemistry and Application of Nanostructures.
Shpirt: The Chemistry of Germanium (Khimia, Moscow, 1967, p.150).
Florinskaya: Structure, Physical and Chemical Properties of Inorganic Glasses (Chemistry, Leningrad, 1974).
The Physics & Chemistry of Sol-Gel Processing (Academic Press, Inc.
Nazarenko: Analytical chemistry of germanium (Nauka, Moscow, 1973).