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The influence of preparation procedures on hydrogenation CO2 to formic acid over supported Ru catalysts Na Liu1, a, Jie Lei1, b, Mengyao Li1,c Peng Wang1, d 1Colleges of chemistry and chemical engineering, Xi’an University of science and technology, 58 Yanta Road Xi’an, China, 710054, aliuna307@126.com, b904544869@qq.com, c396545763@qq.com, d190761270@qq.com Keywords: preparation procedures, Supported Ru catalyst, Hydrogenation of CO2, Formic acid Abstract.
The results reveal that the catalytic activity is determined by the structure of supported ruthenium oxide species.
Lv: Progress in chemistry Vol. 22 (2010), p. 1102-1115 [3] P.G.

And the Bhatia-Thornton (B-T) structure factor gets the same result.
The peculiar types of phase separation microstructure are classified into a droplet-like structure or an interconnected structure by the mechanism of decomposition such as nucleation and growth or spinodal decomposition, respectively [3].
Fig. 3 B-T partial structure factor SCC(Q),at different temperatures.
In this work we discuss the change trend of structure and dynamical parameters in under cooled alloy of Cu50Co50 from the atomic scale.
[4] Y.Qi, L.Wang, T.Fang, Physics and Chemistry of Liquids. 51:6, 687-694(2013) [5] X.W.

Study of thermal properties of curing of DGEBA epoxy resin with Hexakis-(4-aminophenoxy)-cyclotriphosphazene Jing Zhu a, Yong Wu b, Lei Zhao c,Hong liang Wei d Hui juan Chue and Juan Hef School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, Henan,450001,China a jingzhu@haut.edu.cn, b ypwww@126.com, c yuyi6601@126.com, d wtroy68@yahoo.com.cn , e chuhj@haut.edu.cn, f juanhe@haut.edu.cn Keywords: Thermal stability, Synthesis, Phosphazene, Epoxy resin , Flame retardancy.
Hexakis-(4-aminophenoxy)-cyclotriphosphazene (PN-NH2) was synthesized through nucleophilic substitution of the chloride atoms of hexachlorocyclotriphosphazene (HCCP) and reduction of the nitro group, and its chemical structure was characterized.
The products structure were characterized by elemental analysis, 1H NMR, 1P NMR and FTIR spectroscopy.
Conclusions A phosphorus-nitrogen containing compound PN-NH2 was synthesized through a two-step reaction, and its structure was characterized.
Advances in inorganic chemistry and radiochemistry (Academic Press, New York 1978) [6] C.W.

Sol-gel Combustion Synthesis of Nanocrystalline Cerium (IV) Oxide Powders Lingzhi Du1, a, Qiao Feng1, b and Haijin Zheng1, c 1 Chemistry and Chemical Engineering Department, Henan University of Urban Construction, Henan 467044, China adlz701106@126.com, bfengqiaoustb@163.com, czhj518518@126.com Keywords: sol-gel combustion synthesis; ceria; nano-sized powder; gel particle Abstract.
Furthermore, the probable reasons for the effect of gel structure on properties of nano-sized ceria powders prepared by sol-gel combustion were explained.
The initial composition was based on the concepts of propellant chemistry [10].
B A C Fig. 1 FE-SEM image of dry gel bulks with different R (A: R=1.0; B: R=1.5; C: R=2.0) Above phenomenon may be explained by the coordinate structure between Ce4+ and ligands.
The results may be explained by the increasing of steric hindrances as well as more stable coordinate structure with R increasing.

Yunus3,d and Manizheh Navaseri1,e 1Department of Physics, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor 2Department of Chemistry, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor 3Department of Chemical and Environmental Engineering, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor asoltani643@yahoo.com, belias@science.upm.edu.my, cmzobir@ science.upm.edu.my, drobiah@ eng.upm.edu.my, enavaseri@gmail.com Keywords: CdS nanoparticles; microwave; irradiation time, molar ratio Abstract.
The structure of nanoparticles characterized by X-ray diffraction (XRD) was hexagonal.
In both of these figures the peaks observed in the XRD patterns matching perfectly with the crystalline planes of the hexagonal structure CdS reported in the reference code 01-077-2306.
The XRD analysis results confirmed the formation of hexagonal structure.
Stadler, Microwaves in Organic and Medicinal Chemistry, Wiley-VCH, 2005

Introduction In the modern literature on environmental chemistry, HMs are usually referred to as metals with densities higher than 5g/cm³.
In the case of reconstructing hydrogels, incorporating new components, stabilizing agents, or fine-tuning the regeneration process helps maintain the structure.
The 3D structure (BC/CH-A-ZIF-67) nanocomposite maintains good adsorption properties, especially for chromium and copper ions (See Figure 5).
Sulfates and nitrates may disrupt surface chemistry.
Wastewater, The Royal Society of Chemistry, (2021) 1–14. https://doi.org/10.1039/9781839165399-00001

Foamy structure in natural rubber can be developed by adding blowing agent along with calcium carbonate to evolve the carbon dioxide and nitrogen gases which are helpful to produce these structures [4].
Scanning electron micrographs of the samples shown in Fig.9 relates the formation of foamy structure with the change in amount of carbon.
Less carbon amount N1 has more sponge structure while N4 having greater proportion of carbon produced less foaming efficiency due to increase in rigidity of base polymer with increase in carbon [16].
Polymer research Group Chemistry Department.
Khan, Synthesis and Mechanical Properties Evaluation of EPDM based nano-composites,Proceedings of IBCAST, 19-21 January, (2009) [11] Evans, C.W. (1981) Practical Rubber Compounding and Processing, Elsevier Applied Scince Publisher [12] Coran A.Y. (1995), Vulcanization-Conventional and Dynamics, Rubber Chemistry and Technology, Rubber Reviews, vol. 68, no. 3 pp 351-375 [13] Vinogradov, G.V and A.Ya.

China 2School of Chemistry and Chemical Engineering, University of Jinan, 250022 P.R.
IR spectra and DTA indicated that glass network structure change by doping MgO.
IR spectra and DTA indicated that glass network structure change by doping MgO.
Al3+ isn’t completely into the glass network structure for sample 1.
The rest of Al3+ get into the glass network structure adding a little MgO.

Removing W Polymer Residue from BEOL Structures using DSP+ (Dilute Sulfuric-Peroxide-HF) Mixture – A Case Study Hun-Hee Lee1,2, Min-Sang Yun1, Hyun-Wook Lee1, and Jin-Goo Park2,a 1 Samsung.
Ansan, 426-791 Korea a jgpark@hanyang.ac.kr Keywords: W polymer removal, DSP+ chemical, NH3 concentration Introduction As the feature size of semiconductor device shrinks continuously, various high-K metals for 3-D structures have been applied to improve the device performance, such as high speed and low power consumption.
Transmission electron microscope (TEM) used to analyze structure and energy dispersive X-rays used for the composition analysis of the polymer residue.
The high ammonia concentration in the WG was attributed to the amine based slurry chemistry nearby.

BQAS1 QASA BQAS2 DQAS Figure 1 Chemical structure of the four rosinyl quaternary ammonium salts Results and discussion a.
Chemistry and Industry of Forest Products, Vol.1 (1994), p.68-73
[4] Tianrui Ren, Yonghong Li: Rosin chemistry and the function of rosin, Beijing Chemical industry publishers(2005) [5] Fang Guizhen, Ren Shixue, Jin Zhongling.