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Analysis of the Factors in Affecting the Performance of Coal Liquefaction Kun Dua*, Yu Lib and Minglei Lianc Department of Chemistry and Chemical Engineering, Liupanshui Normal University, Guizhou, China a kundu408@gmail.com b xiaomili_abc@sina.com c wangjin-tianya89@sohu.com *Corresponding author Keywords: coal liquefaction, coal type, coal petrographic constituents, catalyst Abstract: Coal liquefaction is a conversion processes which coal generates liquid hydrocarbon and little gas hydrocarbon by its catalytic hydrogenation.
Influence of coal type Coal Liquefaction property primarily depends on the molecular structure of coal, coal petrographic constituents and the minerals.
The structure of these microscopic components determines the behavior and properties of coal in the hot procedure.
W, Free radical chemistry of coal liquefaction: role of molecular hydrogen.

First, the grammar structure is as follows: G = (V, T, P, S) (3) Where V - set of variables, V = (S, D, E) T - the ultimate symbol, T = (σ1, TÎσ2 ..., σn), null event ε P - Production, P = (S → ε | σ1D, D → ε | σiS | σjE, E → ε | σkS) S VÎ- start symbol, S Controlled structure on speech recognition automaton model: Hc = (Q, Γ × Σ, δc, q0, Qm) (4) Where: Q - set of states; Γ - control mode set, Γ = (0, 1) Σ; Σ - event collection; δc - state transition function; q0 - initial state; Qm - identifies the state, that is, the completion status.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)

MethylCellulose Solutions as Shock Absorbers Galit Parvari1,a, Yonatan Rotbaum2,b, Daniel Rittel2,c, Yoav Eichen1,d* 1Shulich Faculty of Chemistry, Technion – Israel Institute of Technology, Haifa 320008, Israel 2Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa 320008, Israel agalitpar@technion.ac.il, by.rotbaum@gmail.com, cmerittel@technion.ac.il, dyoav@ch.technion.ac.il Keywords: Methylcellulose, Hydrogels, Inverse freezing, Polymer mechanics, Impact, Shockwave energy attenuation Abstract.
More recently, for the first time, elements of the actual heated gel structure have been directly observed, by means of SANS and cryo-TEM [6, 10].
It is noted that local transitions within the solution could be much faster – on the order of a few microseconds, without forming the large, complex gel structures that cause visible opacity.
Compositing Methylcellulose for Increased Performance Chemistry offers a rich toolbox with which to improve materials.

Coagulation of Chitosan Solution in Commercial Detergent as Adsorbent for Sorption Methylene Blue Dye Tanaree Buaphean, Thamonwan Ketwongsa and Kowit Piyamongkala* Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, 1518 Pracharat 1, Bangsue, Bangkok, 10800, Thailand *email: kowit.p@sci.kmutnb.ac.th Keywords: Chitosan Resin, Adsorption, Methylene Blue Abstract.
The structure of methylene blue is depicted in Fig. 1.
Fig. 1 Chemical structure of methylene blue Adsorbent.
Acknowledgements Authors are grateful to Department of Industrial Chemistry, Faculty of Applied Science, KMUTNB for providing the necessary facilities in conducting the experimental work.

Determination of parameter values, using the equation used as follows: − Coupling constant: |𝑉𝑅𝑃| = − Energy difference: ∆𝐸𝑅𝑃 = − Light absorption efficiency (LHE): 𝐿𝐻𝐸 = 1 − 10−𝐴 = 1 − 101−𝑓 For the determination of △Ginject, it is calculated using the Rehm Weller equation as follows: ∆Ginject=EOXdye*-ECBTiO2 [6] Parameter τ can be calculated by the following equation τ = 1.499/.ε2 [7] Result and Discussion Figure 1 is the optimized structure of the γ-mangostin compound.
Alagumalai and a. et, "Effect of out of plane Alkyl Group's Position in Dye-Sensitized Solar Cell Efficiency: A Structure Property Relationship Utilizing Indoline-Based Unsymetrical Squaraine Dyes," vol. 51, no. 8, 2016
Amornkitbamrung, "Photovoltaic Performance of Natural Dyes for Dye-Sensitized Solar Cells: A Combined Experimental and Theoritical Study," Computational and Theoritical Chemistry, pp. 203-229, 2019
Güllü, "Molecular engineering of thienothiophene or dithienopyrrole-based π-spacers for dye-sensitized solar cells (DSSCs) with D-π-A architecture: A DFT/TD-DFT study," Computational and Theoretical Chemistry, vol. 1201, 2021.

Microstructure Evolution at High Temperatures for Co-MOF-74 as High-Efficiency Electromagnetic Absorbers Yue Zhang1, Tao Li1, Shiyu Tang2, Xinyue Xie2, Ruzeng Liang2 and Xiaoxiao Chu1,a* 1School of Chemistry and Materials Science, Ludong University, Yantai, 264025, China 2School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo, 255049, China *email: 3498@ldu.edu.cn Keywords: Co-MOF-74 precursor, Metal organic frameworks, Microwave absorption, Electromagnetic performance Abstract: Increasing demands of microwave absorbents require new approaches to enhance the absorbing performance.
XRD analysis shown in Fig. 2 has been performed to determine the composition and crystal structures of the samples.
The MOFs composite with highly porous structure possesses superior EM dissipation performance with the minimum RL of –25.5 dB and broad bandwidth of 6.7 GHz at 2.5 mm.

In particular, silver nanoparticles (Ag NPs) have received great interest due to their attractive catalytic, antibacterial, magnetic, optical properties [1-3] and potential applications in the fields of physics, chemistry, biology, medicine, materials science, environmental sciences and their different interdisciplinary fields [4,5].
Fig. 1d illustrates a nanoparticle with multiple-twinned structure type (MTP).
In Fig. 2e, a nanoparticle with fcc-like structure can be appreciated.
El-Sayed, Chemistry and properties of nanocrystals of different shapes, Chem.

The main appeal of this area of research is that it combined organic and inorganic chemistry, a feat previously thought of as highly unlikely [2].
As shown in the SEM images above, 7.5% doesn’t provide a uniform porous structure.
This may be due to the small amount of the PVDF in the structure.
Inorganic chemistry 54.10 (2015): 4862-4868

Catalytic Ozonation of Humic Acids with La-Mn/γ-Al2O3 Complexation Catalysts Yan LI1, a, Yong LIU1,2,b *, Shilin ZHAO1,2,c, Pengjuan YUAN1, Lin LI1 1 College of Chemistry and Material Science, Sichuan Normal University, Chengdu 610066, P.
Due to the selective oxidation property of the ozone molecule, highly structured organic compounds cannot be thoroughly mineralized in ozonation alone and low-mass substances are tend to be released[4].
The surface of the γ-Al2O3 (a) is rough and consists of pore structures.While the surface of the La-Mn/γ-Al2O3 (b) become smooth and obtain a lot of active components and formed of distinct crystal form which is slight spheroid and homogeneous size and distribution.
References [1] STUMM W, MORGAN J J: Aquatic chemistry (3rd edition) [M].

The burning models developed so far are still quite simplified, thus the mathematical models are the methods used to demonstrate the flame structure, gaseous phases and other products during the burning [4].
Farrington: Direct determination of burning rates of propellant powders, Analytical Chemistry (1947). 19(9), p. 34
Beckstead: Solid propellant combustion mechanisms and flame structure.
Journal Pure and Applied Chemistry (1993). 65(2),p. 11.