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The structure parameters of the final product agree well with the reference, which indicate the formation of K-clinoptilolite.
The structure of natural clinoptilolite is showed in Fig. 1.
Structure Optimization of Clinoptilolite Model.
It is necessary to make an optimization before simulation to get a more stable structure.
Vol.34, issue3 (2005), p. 5（In Chinese） [2] Guobin Cheng, Mei Han etal: Chinese Journal of Applied Chemistry.

Such cavities may pose severe problems when nearby structures are constructed since they establish undesirable connections among the structures.
Gray, Polymer electrolytes, Royal Society of Chemistry Monographs, Cambridge (1997)
Shershnev, The Chemistry and Physics of Polymers (Translated by G.
Alger, in: Radiation effects in polymers: Physics and chemistry of the organic solid state, (eds.)
Dias, Electronic behavior of micro-structured polymer foils immersed in electrolyte, Nucl.

The old brick has just such a fine-pored homogeneous structure [3].
Thus, according to [14-16], if it is necessary to ensure maximum adhesion of the repair mixture to the substrate, it is necessary to observe the similarity law of structures (the structure of the repair compound and the brick must be artificially close to each other).
It should be understood that under the structure in this case, we understand a certain integral parameter that takes into account not only the features of the bulk structure of the material, but also, above all, the similarity (compatibility) of surface properties.
Acknowledgements The research was carried out on the unique scientific equipment “Physical Chemistry of Surfaces of Nano-Dispersed Systems” with the financial support of the state assignment, project No. 0793-2020-0005.
Astafyeva et al., Protection of underground parts of buildings and structures from the impact of underground water, Regional development. 3-4 (2014) 202-205

Jothivenkatachalam* Department of Chemistry, Bharathidasan Institute of Technology, Anna University, Tiruchirappalli 620 024, India.
The one more factor involved in the enhancement of photocatalytic activity of the WO3/TiO2 is high aspect ratio structures.
The wider pore structures were obtained by applying higher voltage.
High aspect ratio structure of WO3/TiO2 photocatalyst.
Ohtani, Preparing articles on photocatalysis - beyond the illusions, misconceptions, and speculation, Chemistry Letters. 37 (2008) 217–229

The ordered pore structure and large specific area of the molecular sieve that has good adsorption performance for the organic substances AQ, leading to a much smaller scale of AQ particles regenerated within and outside the mesoporous structure of SBA-15 molecular seives.
The SEM images of SBA-15 in Fig. 3e present tubular through pore structure, which is favourable for the adsorption of AQ in molecular seives.
Fig. 3b and 3f show the microstructure of ASU1 and ASU2 composites, which mainly exhibit the cylindrical structure of SBA-15 without granular AQ materials.
On the other hand, there is less AQ adsorbed on the surface of SBA-15, indicating that more AQ is present within the tubular structure of the molecular sieves.
[3] Chen H Y, Poizot, P, Dolhem F, Basir N I, Mentré O, Tarascon J-M, Electrochemical Reactivity of Lithium Chloranilate vs Li and Crystal Structures of the Hydrated Phases.

First-principles in theory is mostly used to analyze the point defect structures for uranium silicides nuclear fuels.
A uranium-silicon phase with the AlB2-type (space group P6/mmm) structure is β-USi2 [6].
Since the fission products may also affect the uranium silicide crystal structures, the relative volume variation of the structures caused by fission products is predicted.
Rogl, Structural chemistry and magnetic behavior of binary uranium silicides, Solid State Chem. 97 (1992) 391
First-principles investigations on the electronic structures of U3Si2, J.

Supramolecular structure and the worn surfaces of PTFE and PCM were observed by scanning electron microscope JSM-7800F LV (SEM, JEOL).
The specimens for supramolecular structure studies were obtained by cold chipping.
SEM images of the PTFE+8 wt.% CF+1 wt.% WS2: a) supramolecular structure (×3000); b) worn surface (×1000).
Okhlopkova, Effect of organomodified layered silicates on the properties and structure of polytetrafluoroethylene, Polym.
Alexeev, Studying the properties and structure of polytetrafluoroethylene filled with Belum modified carbon fibers, J.

With the continuous development of science technology, urban scale was expanding, and different spatial structures and morphology of urban populations formed, and then "cities" movement started.
The industrial structure in the whole regional cities, allocation of ecological resources, characteristics of urban history and culture should be considered comprehensively with the structure and layout of regional cities.
Optimize the layout of urban spatial structure.
Therefore, the layout of spatial structure of cities during the sustainable development process should be optimized.
Each block of planning land should be rational used and spatial structure within the region should be rational distributed to promote the healthy and rapid development of urbanization.

The dielectric properties and crystal structure of Ba0.85Sr0.15TiO3 and Ba0.85Sr0.15Ti0.92Zr0.08O3 ceramics were studied.
The Ba0.85Sr0.15TiO3 exhibited tetragonal structure (space group P4mm), while with addition of 8% Zr into Ba0.85Sr0.15TiO3 it shows that the sample exhibited orthorhombic structure (space group Amm2).
It shows that the reflected patterns were attributed to the perovskite structure without the presence of impurities.
Inorganic chemistry, 57(1), 64-71
Structure refinement and impedance analysis of Ba0.85Ca0.15Zr0.10Ti0.90O3 ceramics sintered in air and nitrogen.

Kim 2,b Division of Nano Sciences and Department of Chemistry, Ewha Womans University, Seoul 120-750 Korea a hwangsju@ewha.ac.kr, bbaekho0120@hanmail.net Keywords: visible active photocatalysts, nanohybrids, heterostructure, exfoliation-restacking, bandgap engineering Abstract.
The efficiency of the photocatalysts depends strongly on their band structures such as bandgap energy (Eg), the positions of VB and CB, etc.
The formation of the pillared structure of the calcined CrOx-Ti1.83O4 nanohybrid was further confirmed by FE-SEM and HR-TEM analysis.
This finding underlines that the crystal structure of titanate layer remains nearly the same upon hybridization with the chromia cluster.
Although the XRD analysis for the calcined samples demonstrates the destruction of pillared structure, the present XANES results clarify that the lapidocrocite structure of titanate sheets remains even after the collapse of the pillared structure.