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X-ray Diffraction Spectroscopy (XRD) Material structure and type of crystal structure for the potential catalyst at temperature of 800°C, 900°C and 1000°C were identified and studied by using XRD analysis.
XRD diffractograms revealed that Al2O3 is CeO2 face-centered cubic crystal structure of Ni/Ce/Al2O3 catalyst were an active site for the catalytic activity to occur.
Treatment of Acidic Petroleum Crude Oil Utilizing Catalytic Neutralization Technique of Magnesium Oxide Catalyst, Modern Chemistry & Applications, 2013
Journal of Industrial and Engineering Chemistry, 20(4), 2086– 2094
Journal of Industrial and Engineering Chemistry 20(5), 2858–2863.

The mechanism by which the γ-(Mg17All2) and η-(MgZn2) precipitates affected the age strengthening of the alloys was discussed in terms of the morphology, crystallography, interfacial structure, and relative quantity of the precipitates, and of their ability to block dislocation basal slip in the Mg-rich matrix.
Table 1 Designation nominal and obtained chemistry of magnesium alloys for the study (wt.%) Designation Nominal chemistry Al/Zn ratio Obtained chemistry AZ91 Mg-9.0Al-1.0Zn-0.1Mn 9/1 Mg-7.58Al-0.91Zn-0.40Mn AZ64 Mg-6.0Al-4.0Zn-0.2Mn 6/4 Mg-5.27Al-4.31Zn-0.13Mn AZ46 Mg-4.0Al-6.0Zn-0.2Mn 4/6 Mg-3.06Al-4.80Zn-0.15Mn Results and discussions Morphology and crystallography of the aged precipitates.
It was unfortunately found [4-6] that the crystallography and interfacial structure of the precipitates all favored the precipitation of type I γ-(Mg17All2 ), but not types II and III.
The precipitations of type I γ-(Mg17All2) and η-(MgZn2) were promoted by their favored crystallography and interfacial structure. 4.

Enhanced Cr(VI) Reduction Efficiency Using Clay Support and Hydrothermally Synthesized LTA Zeolite Composite Membrane Abderrazek El-Kordy1,2,a*, Abdelaziz Elgamouz2,b*, El Mokhtar Lemdek1,d, Abdel-Nasser Kawde2,c, Najib Tijani1,e 1Materials, Membranes and Nanotechnology Laboratory, University of My Ismail, Faculty of Sciences Meknes, BP: 11201, Zitoune, Morocco. 2Department of Chemistry, Pure and Applied Chemistry Group, College of Sciences, University of Sharjah, P.O.
The clay support creates a porous structure, ideal for adsorbing Cr(VI) ions, while the LTA-type zeolite membrane offers selective permeability, through its narrow pore size, tuning the volume down on Cr(VI).
The synthesized zeolite LTA was compared with literature data in the zeolite database, revealing a well-defined crystalline structure within the cubic system [14].
Dehmani et al., “Adsorption of various inorganic and organic pollutants by natural and synthetic zeolites : A critical review,” ARABIAN JOURNAL OF CHEMISTRY, p. 105474, 2023, doi: 10.1016/j.arabjc.2023.105474
Baerlocher, “Database of Zeolite Structures,” http://www.iza-structure.org/ databases/

Lattice parameter, Å Fig.1 Total energies of the structure fragment clusters of montmorillonite layer On the basis of the obtained equilibrium geometric structure of clay fragment (Fig. 1a) we studied the interaction of clay structure fragment consisting of two layers that form the inter-packet space with the inserted ions: Na+, К+ , Mg+2 and Ca+2.
When optimizing the parameters of this structure, the clay layers forming the inter-packet space were “frozen”.
When optimizing the parameters of this structure the clay layers were “frozen”.
This may mean that such soils are poorly structured.
The clay particles containing Mg+2 on their surface are characterized by more stable structures.

Because of the positive charge and because of their properties of anion exchanges, different anions can be intercalated into the structure.
The structures of the intercalated ILs are reported in Fig. 1.
The XRD spectra of pristine LDH present the classical peak of the structure at (006) (009) (015) (018) (110) (113).
Journal of Physics and Chemistry of Solids. 67 (2006) 1286-1290
Journal of Solid State Chemistry. 178 (2010) 2766-2777.

The structure was characterized by 1HNMR and elemental analysis.
In environmental pollution Problem，H2PO4-, aldehydes, alcohols and other anions and neutral molecules play a very important role.Molecular recognition of neutral compounds presents achallenge in the area of supramolecular chemistry.Calixpyrrole as a new class of anion and neutral molecule receptors is widespread interest in the study [1,2].
The synthesis method of meso-aminophenyl calix[4]pyrrole be studied in this paper, meso-tetra- methyl-meso-tetra-aminophenyl calix[4]pyrrole (Ⅱ) and two calix[4]pyrrole compounds(Ⅲ) that not been reported in the literature were prepared, and the structure was characterized by 1HNMR, elemental analysis. 1.
Gale: Anion receptor chemistry:highlights from 1999, Coord.

Depending on the DSQ process the molecular structure of the residues will differ.
The post-etch cleaning is important for removing residues remaining after the metal structuring process.
The surface chemistry was studied by using Fourier- transformed infrared microscopy (FT-IR) and laser spectroscopy.
During DSQ treatment the molecular structure changes.
Conclusion The residues of the samples proceeded with the standard DSQ show less solubility in HDA based chemistry than those which were treated with the modified DSQ.

In recent years, monolithic[4-6] supports as stationary phases in high performance liquid chromatography (HPLC) and capillary electrochromatography (CEC) have gained significant interest due to their ease of preparation, high reproducibility, versatile surface chemistries and fast mass transport.
From the structure, it may be an anti cancer activity agent.
Experiments Materials R-3-(4-Fluorophenyl) -2, 2- Dimethylcyclopane Carboxamide (M) and its s-enantiomer were donated from Laboratory of Molecular Recognition and Selective Synthesis, Institute of Chemistry, Chinese Academic of Science.
Tridimensional structures of the compound and the interaction of the template with functional monomer were simulated with Soft ChemOffice 2005.
In the polymer monolith preparations, the phase separation between growing polymer chains and porogenic solvent proceeds so fast and the coarsening of monolithic structure inherently leads to heterogeneous macroporous structures composed of tiny micron size globular particles.

Study of Alloys IrxRe1-x (x = 0.65, 0.75 and 0.85) PANCHENKO Anton 1, 2, a, DYACHKOVA Tatyana 3, GROMILOV Sergey 1, 2, ZAYNULIN Yuriy 3 1Nikolaev Institute of Inorganic Chemistry, Lavrentiev pr. 3, 630090, Novosibirsk, Russia 2Novosibirsk State University, Pirogov str. 2, 630090, Novosibirsk, Russia 3Institute of Solid State Chemistry, Pervomaiskaia, str. 91, 620990, Ekaterinburg, Russia aanton.physnsu@gmail.com Keywords: metals and alloys, high-pressure, iridium, rhenium.
The composition of phases IrxRe1-x with the face-centered cubic (fcc) structure of iridium has been shown to be limited to 0.87 < x < 1, while for the phase with the hexagonal close-packed structure of rhenium to 0 < x < 0.75 (Fig. 1).
According to [4], Ir0,85Re0,15 belongs to solid solutions based on the structure of iridium and Ir0,65Re0,35 on the structure of rhenium, while Ir0,75Re0,25 to two-phase region.
Filatov: PhD Thesis, Nikolaev Institute of Inorganic Chemistry, (Russia, 2009)

Preparation and thermal decomposition of the polyoxometalate complexes of ciprofloxacin with HnXW12O40 (X=B, Si, P) Dun-Jia Wang*a, Yan-Fang Kangb, Ben-Po Xuc Hubei Key Laboratory of Pollutant and Reuse Technology, College of Chemistry and Environmental Engineering, Hubei Normal University, Huangshi 435002, China adunjiawang@163.com, b kangyanfang888@163.com, cxbp-2006@163.com Keywords: Thermal decomposition, polyoxometalate complexes, ciprofloxacin, TG/DTA Abstract.
Introduction Polyoxometalate-based organic / inorganic complexes are of great interest in different areas such as catalysis, supramolecular inorganic chemistry, electrical conductivity and biological chemistry.
Results and discussion The IR spectra data of these complexes permit the identification of not only the presence of organic groups but also the Keggin-type structure in the polyoxometalate complexes[12,13].
At first, their TG curves occur as a mass loss in the 50-230ºC range due to the loss of water molecule, and then anhydrous heteropolymetalates show a three-stage decomposition, the DTA curves exhibit two strong exothermic peaks, which correspond to the loss of ciprofloxacin and its fragments with collapse of Keggin-type structure[14-16].
At first, the TG curves show a mass loss at about 50-200ºC due to the loss of water molecules, the second stage is a gradual exothermic decomposition process between about 200ºC and 400ºC due to the loss of hydrogen chloride molecules and piperazinyl groups, the third and the fourth stages exhibit a strong and broad exothermic effects on the DTA curve due to the loss of ciprofloxacin and its fragments with collapse of Keggin-type structure.