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Online since: September 2020
Authors: Wei Li, Dan Wu, Ojiyed Tegus, Si Qin Bater
Tegus1,c and Siqin Bator1,d 1Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, College of Physics and Electronic Information, Inner Mongolia Normal University, Hohhot 010022, China.
As can be seen from figure 2, XRD pattern conforms to Fd3m structure (JCPDS 35-0782).
Diffraction peaks of other substances are not detected, indicating that the crystal structure of the material do not change after coating Li1.4Al0.4Ti1.6(PO4)3.
The surface coating does not change the crystal structure of the material.
Nan, Structure and electrochemical performance of spinel LiMn1.95Ni0.05O3.98F0.02 coated with Li-La-Zr-O solid electrolyte, J.
Online since: January 2016
Authors: Ondřej Holčapek
The requirements are specifically described in codes for specific country [1] according to type of structure and purpose of building.
Concrete, as a widely used structural material for civil and transport structures has appropriate fire safety properties (in contrast with steel) [2].
This volume expansion is connected with tensile strength in inner structure that results into cracks and macroscopic disintegration of composite in general.
George, Structure and Performance of Cements, Appl.
Artementko, Polymer composite materials made from carbon, basalt and glass fibers, Structure and properties, Fiber chemistry 35 (2003) 226-229
Online since: March 2013
Authors: Ya Fei Zhang, Nan Tao Hu, Xiao Lu Huang, Yan Yan Wang
Similar with carbon nanotubes (CNTs), as a nano-structured material, graphene has attracted considerable interest in developing sensors because of its sensitive inherent surface, high conductance and large surface area.
The porous structure and high specific surface area of graphene enable this nanosheet a high sensitivity to analytes.
Fig. 3(a) depicted the lamellar structure of GO nanosheets.
It is obvious that the structure of the sheets have been.
Nantao Hu received the Ph.D. degree in Polymer Chemistry and Physics from Jilin University, China, in 2007.
Online since: January 2005
Authors: Eun Sun Yoo, In Mo Yoon
., in the waste effluents are highly structured complex polymers, which are very difficult to decompose biologically.
As a result, six molecules of waters placed around the aluminum ion formed an octagonal structure (Scheme 2).
Positive ESI mass spectra of PASi-1 coagulant in water From the ESI mass spectrum pattern of PASi-1(Fig. 6), we can propose the structure of Si-Al combined coagulant (PASi-1) in an aqueous solution (Scheme 3).
Subsequently, we will propose the basis of an effective synthetic method of coagulant in the molecular level by expanding the structure-function study of coagulant materials.
Stumm: Chemistry of the Solid-water Interface; Process at the Mineral-water and ParticlewaterIinterface in Natural Systems (John Wiley and Sons, Inc.
Online since: October 2014
Authors: Chaouki Sadik, Abderrahman Albizane, Iz Eddine el Amrani
Composition and Ceramic Characteristics of Cretaceous Clays from Morocco SADIK Chaouki 1,a *, ALBIZANE Abderrahman1,b, EL AMRANI Iz-Eddine2,c 1 Department of Chemistry, Faculty of Science and Technology, University Hassan II, Mohammedia – Casablanca.
The relatively high mechanical properties of glazed ceramic products are essentially due to their structure which is mainly composed of calcium silicates and aluminates as well as MgO in an amorphous of crystalline state.
Table 2: Results of the physical parameters according to the sintering temperature of the Cretaceous clay Temperature (°C) Linear Firing shrinkage (%) Water absorption (%) Flexural strength (MPa) Porosity (%) Loss in weight with cooking (%) 900 950 1000 1050 1100 1150 1200 0.44 1.98 2.67 2.83 3.29 4.87 5.53 18.33 16.11 13.69 9.45 5.76 3.41 1.16 7.56 10.41 14.54 18.21 21.65 24.81 28.38 28.17 25.07 23.71 19.65 14.33 11.21 4.47 10.4 9.6 8.7 8.1 7.7 7.0 6.6 The relatively high mechanical properties of ceramic products are essentially due to their structure which is mainly composed of crystalline phases [10].
At 700 °C, CaCO3 present in the clay, begins to decompose to CaO, this decomposition during firing is often accompanied by the evolution of CO2 outside the structure of the fired samples which tends to create a more porous structure.
At 1200 °C, the bodies presented homogenous structure.
Online since: June 2012
Authors: G.Q. Tan, Ao Xia, Wei Guang Han, Hui Jun Ren
Preparation of SrTiO3 Thin Films with Self-assembled Monolayers by Liquid Phase Deposition and Its Dielectric Properties Weiguang Hana, Guoqiang Tanb, Ao Xia and Huijun Ren Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, P.R.
Introduction SrTiO3 has the typical perovskite structure.
The effects of components, micro-structure, preparation technology, base tablets, bottom electrode, and crystallization of SrTiO3 thin film on the dielectric performance have been studied systemically.
When pH = 3.10, the as-prepared SrTiO3 thin films grains showed the island structure.
Growth and structure investigation of multiferroic superlattices: [(La0.8Sr0.2MnO3)4n/(BaTiO3)3n]m.
Online since: July 2020
Authors: Salma Amaliani Putri, Nasruddin Nasruddin, Mufiid Fatkhurrahman, Samson Patar Sipangkar, Fadel Al Farouq, Yuliusman Yuliusman
In general, activation is divided into two, namely chemistry and physics.
Activated carbon with the ability to absorb high iodine means that it has a larger surface area and has a larger micropore and mesoporous structure.
Scanning Electron Microscopy (SEM) used as a test device to see the surface structure of activated carbon.
The use of the SEM test was conducted to see the morphological structure of activated carbon.
Potassium is used for active carbon intercalation and will produce more micropore structures and larger specific surface areas.
Online since: October 2015
Authors: Raimundas Siauciunas, Rokas Gendvilas
Their compositions vary over a large Ca/Si range, and their crystallographic structures range from amorphous to highly crystalline [1–3].
C-S-H(I) and C-S-H(II) were not identified in the XRD pattern due to low quantity and their nearly amorphous structure.
More disordered structure of Ca(OH)2 fastens its reaction with SiO2 component during the hydrothermal synthesis.
Udagawa, Structure of α – Dicalcium Silicate Hydrate, Acta Cryst. 49C (1993) 1555-1559
Stemmermann., Hydration behavior of Celitement®: Kinetics, phase composition, microstructure and mechanical properties, in: 13th International Congress on the Chemistry of Cement, Madrid, 2011, pp. 159
Online since: December 2014
Authors: Shun Guan Zhu, Lin Zhang, Guang Bin Cheng, Peng Yuan Chen
Previous study of cocrystal explosive focused on the preparation and crystal structure analysis but little on the mechanism of cocrystal formation and causes for properties changing.
Table1 The calculated and experimental lattice parameters of TNT, β-CL-20 and TNT/CL-20 cocrystal crystal TNT β-CL-20 Cocrystal MD expt MD expt MD expt a(Å) 15.458 14.910 9.652 9.676 9.360 9.674 b(Å) 6.292 6.034 12.975 13.006 19.536 19.369 c(Å) 17.341 19.680 11.621 11.649 24.603 24.690 Trigger bond length In terms of explosives with similar molecule structure, bond order of trigger bond can be used as a criterion to judge the relative sensitivity.
However, classical MD simulation can not provide the information of electronic structure, and so does bond order data.
References [1] Bolton O, Matzger AJ, Angew Chem Int Ed Engl, 2011, 50(38), 8960-8963 [2] Bolton O, Simke LR, Matzger AJ, Crystal Growth & Design, 2012, 12(9), 4311-4314 [3] Haobin Zhang, Changyan Guo, Xiaochuan Wang, Jinjiang Xu, Xuan He, Yu Liu, Xiaofeng Liu, Hui Huang, Jie Sun, Crystal Growth & Design, 2013, 2, 679-687 [4] Landenberger KB, Matzger AJ, Crystal Growth & Design, 2012, 12(7), 3603-3609 [5] Zongwei Yang, Hongzhen Li, Xiaoqing Zhou, Chaoyang Zhang, Hui Huang, Jinshan Li, Fude Nie, Crystal Growth & Design, 2012, 12(11), 5155-5158 [6] He Lin, Shunguan Zhu, Hongzhen Li, Xinhua Peng, Journal of Molecular Structure, 2013, 1048, 339-348 [7] H.
[10] Xiufang Ma, Feng Zhao, Guangfu Ji, Weihua Zhu, Jijun Xiao, Heming Xiao, Journal of Molecular Structure: THEOCHEM, 2008, 851(1-3), 22-29 [11] Jijun Xiao, Wenrui Wang, Jun Chen, Guangfu Ji, Wei Zhu, Heming Xiao, Computational and Theoretical Chemistry, 2012, 999: 21-27
Online since: December 2012
Authors: Yu Jie Yu, Jun Hu Zhou, Ke Fa Cen, Jian Zhong Liu, Fu Yan Gao, Ya Xuan Hu
It is reported that the structure of the organic matter in the brown coal is altered and the oxygen-containing functional groups can be removed during HTD process.
The characteristic temperatures were determined by the coal molecular structure.
Infrared absorbance intensity curve of methane with temperature of brown coals and their HTD products: (a) XM coal; (b) BT coal Kinetics of brown coal and there HTD products pyrolysis The coal pyrolysis process was difficult to understand due to its complicated structure.
Coal chemistry.
Coal structure and its reactivity, Science press, Beijing, China(2002).