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Online since: April 2013
Authors: Hong Wu Xu, Xiu Lian Wang, Liang Zhao, Liu Xue Zhang
Experimental Reagents and materials The reactive polymer fiber with high adsorption capacity and good mechanical properties, RPF-AA, supplied by Chemistry Institute of Henan Academy of Sciences, pretreated by immersed in acetone over 24 h.
The solution was heated to reflux for 2 h by a microwave synthesis workstation (MAX-Ⅱ, Shanghai Sineo Microwave Chemistry Technology Co.
To characterize the crystal structure of TiO2 nanoparticles in the colloidal solution, 20 mL of colloid was evaporated at room temperature, yielding a bright water-dispersible yellow solid.
Fig. 1a showed the XRD pattern of this solid, in which peaks were observed at values of 2ɵ equal to 25.4, 37.9, 48.1, and 54.58 that correspond to the anatase structure.
Online since: November 2012
Authors: Mei Qin Shi, Chun An Ma, Ning Ning Chen, Ai Ping Wei
Dehydro-aromatization of n-Hexane over Zinc Modified WC/HZSM-5 Catalysts Aiping Wei1, a, Meiqin Shi2,b, Chun’an Ma3,c, Ningning Chen4,d State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, College of Chemical Engineering and Materials Science 1, 2, 3,4Zhejiang University of Technology, International Sci & Tech Cooperation Base of Energy Materials and Application, Hangzhou 310032, Zhejiang, China E-mail: amagua1988@163.com, bsmq@zjut.edu.cn, cscience@zjut.edu.cn, dchnn000000@163.com Keywords: Zn-WC/HZSM-5 catalysts, Tungsten carbide, Acidity, Aromatization, N-hexane Abstract.
The phase structures of catalysts were characterized by X-ray powder diffraction with a X’Pert PRO X-ray (PANalytical, Netherlands) at room temperature, using quartz monochromator Cu Kα radiation source (λ=1.541 nm) under a voltage of 40 kV and a current of 40mA Thermogravimetric analysis (TGA) was performed on a simultaneous thermo-gravimetric analyzer (TG/DTA PYRIS DIAMOND).
The catalysts exhibit characteristic peaks of zeolite (2θ: 7.8°, 8.7°, 22.9°, 23.6° and 24.2°), obviously the zeolite crystal structure is not changed significantly after addition of WC and Zn.
Naccache: Proceedings of the International Symposium on Chemistry and Microporous Crystals, (Tokyo, 26–29 June, 1990), p.267
Online since: December 2013
Authors: Chao Liu, Fei Wang, Xiao Qi Chen, Hai Jun Zhou, Xiao Lei Zhang, Yan Tao Li
The coating material by introducing a certain amount of the-COOH group in its molecular structure can make the drug be not released in the stomach, only dissolved in a particular pH liquid, while increasing the stability of drugs.
The structure of polymethacrylate was characterized by FI-IR.
Wu: Chemistry World.
Huo: Chemistry and Adhesion.
Online since: April 2014
Authors: Xiao Hui Du, Dao Heng Sun, Ling Ke Yu, Ling Yun Wang, Jie He, Shu Fen Chen, Cheng Zheng, Zhan Zhan
., Xiamen, China, 361005 2College of Chemistry and Chemical Engineering, Xiamen Univ., Xiamen, China, 361005 ahejie_579546@126.com, bzhanzhan_snow@163.com, cfengpiaotaxiang@163.com, dcsfbee36@163.com, eyulingke@gmail.com, fchzhxmu@gmail.com, gwangly@xmu.edu.cn, hsundh@xmu.edu.cn Keywords: carbon nanotubes; glass frit; transfer Abstract.
The SEM image of inset: VA-CNTs within the block VA-CNTs Transfer Some adhesives such as Sn-Pb/Sn-Ag solder, conductive epoxy and Ag paste for CNTs transfer have already been applied to field emitters, electrical interconnects, thermal management structures [4] and composite microprobes [3].
As shown in the magnified SEM images in Fig.4, the structure of glass frit is changed from particles, after the organic solvent evaporated at 250°C, to molten state at 650°C.
Acknowledgment The authors would like to thank Mingsong Lin, college of chemistry and chemical engineering, for the help about CNTs growth.
Online since: June 2014
Authors: Noriko Saito, Naoki Ohashi, Hajime Haneda, Chrystelle Neaime, Stephane Cordier, Fabien Grasset, Tangi Aubert, Francisco Cabello-Hurtado, Marie Andrée Esnault, Dominique Lebret-Chauvel, Sylvie Jeanne, Pascal Pellen, Koji Kimoto, Nicolas Nerambourg
Tangi Aubert,1,a Nicolas Nerambourg,1 Chrystelle Neaime1 , Francisco Cabello-Hurtado,2 Marie-Andrée Esnault2, Dominique Lebret-Chauvel,1 Sylvie Jeanne,1 Pascal Pellen,1 Noriko Saito3, Koji Kimoto,3 Hajime Haneda,3 Naoki Ohashi,3 Stéphane Cordier1,b, Fabien Grasset1,c 1University of Rennes 1, UMR UR1-CNRS 6226 Institut des Sciences Chimiques de Rennes, Solid State Chemistry and Materials Group, 263 av. du Général Leclerc, 35042 Rennes, France. 2University of Rennes 1, UMR UR1-CNRS 6553 Ecobio, Mechanismes at the Origin of Biodiversity Team, 263 av. du Général Leclerc, 35042 Rennes, France. 3National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
As illustrated in Fig. 1b, if the inverted micelles contained both cluster units and hydrophilic γ-Fe2O3 nanocrystals, a bi-functional structure is obtained.
Reproduced from Ref. [6] with permission from The Royal Society of Chemistry.
[6] Grasset, F.; Dorson, F.; Molard, Y.; Cordier, S.; Demange, V.; Perrin, C.; Marchi-Artzner, V.; Haneda, H., One-pot synthesis and characterizations of bi-functional phosphor-magnetic @SiO2 nanoparticles: controlled and structured association of Mo-6 cluster units and γ-Fe2O3 Nanocrystals, Chem.
Online since: April 2013
Authors: Norhayati Ahmad, Nurhanna Binti Mohd Zaidan, Maisarah Mohd Bazin
It is a combination of polymer chemistry with slip technique and represents minimal departure from standard ceramic processing.
The bulk density of samples was in the range from 1.36 to 1.87 gcm-3.The phenomenon of shrinkage occurs as collapse of the 3D network structures of cross-linked polymer gels [9].
The contents of monomer and cross-linker in slurry influence the 3D network structures of cross linked polymer gels.
Ludescher,Molecular mobility in a homologous series of amorphous solid glucose oligomers,Food Chemistry Journal. 132(2012) 1814-1821
Online since: August 2016
Authors: Cari Cari, Ahmad Marzuki, Mukhayyarotin Niswati Rodliyatul Jauhariyah
Mysen, Physics and chemistry of silicate glasses and melts, Eur.
Optical, elastic properties and DTA of TNZP host tellurite glasses doped with Er3+ ions, Journal of Molecular Structure 1108 (2016) 267-262
Montagna, Er3+ local structure and its optical properties in ZnO-PbO tellurite glasses, Journal of Non-Crystalline Solids 383 (2014) 153-156
Ahmed, New tellurite glasses: optical properties, Materials Chemistry and Physics. 109 (2008) 291-296
Online since: February 2013
Authors: Shi Biao Zhou, Xiao Bing Huang, Yuan Dao Chen, Hong Hui Chen, Huang Rong Li, Qian Peng Yang, Bei Ping Liu, Ji Feng Yang
Electrochemical Performance of Mg-doped Li2FeSiO4/C as Cathode Material for Lithium-ion Batteries Xiaobing Huang 1, 2,a,Honghui Chen 2, Huangrong Li 1, Qianpeng Yang 1, Shibiao Zhou1, Yuandao Chen 1, b, Beiping Liu 1, Jifeng Yang 1 1 College of Chemistry and Chemical Engineering, Hunan University of Arts and Science, Changde 415000, China 2 Changde lyrun new material Co.
The effect of Mg-doping on lattice structure, morphology and electrochemical characteristics of Li2FeSiO4 was investigated.
It can be observed that the diffraction peaks of both samples are in full accord with orthorhombic structure indexed to the Pmn21 space group.
Acknowledgements Financial supported by the construct program of the key discipline in hunan province(Applied Chemistry), Hunan Provincial Natural Science Foundation of China (12JJ8004), Changde City S&T plan projects(2012ZX17 and 2012ZX20), Startup Foundation for Docotors of Hunan University of Arts and Science (QD201110).
Online since: January 2011
Authors: Ye Li, Heng Jian Zhang
Determinants of Entrapment of R-Phycoerythrin within Ployeletrolyte Microcapsules Ye Li a*, Hengjian Zhangb Department of Chemistry, School of Chemistry and Biological Engineering University of Science and Technology Beijing,100083, Beijing, P.R.China aemail:liye@ustb.edu.cn, bemail: wlhxzh@sas.ustb.edu.cn Keywords: R-Phycoerythrin, capsules, charge, entrapment Abstract.
Here, we can ignore the effect of pH on R-PE itself, since recent studies point out there are no significant changes in steady state spectra, molecular structure or aggregation state of R-PE within the pH range of 3.5–11 and the tertiary structure of R-PE are relatively stable at this pH range[18].
Online since: March 2007
Authors: Shi Chang Cheng, Zheng Dong Liu, H.S. Bao, Yu Gan, Gang Yang
The authors experimentally investigated the influential factors such as heat treatment and chemistry on the properties of T122 in the recent years.
The chemistry of the steel was listed in Table 2.
Fig.1 Base phase evolution of heat #4 during equilibrium change Fig.2 Precipitation evolution of heat #4 during equilibrium change fcc bcc Laves M23C6 MX Calculated results showed that the equilibrium microstructure is martensite/ferrite with bcc structure and austenite/MX with fcc structure as well as minor AlN precipitates.