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Online since: October 2010
Authors: Üner Çolak, İrem Vural, Nasser Khazeni, Bora Mavis, Güngör Gündüz
Phase identification, purity and structure characterization were carried out by using X-Ray Diffraction (XRD) Analysis.
Pattanaik, Chemistry of Materials Vol. 11 (1998), p. 101-108. 8.
Haygarth, Journal of Solid State Chemistry Vol. 139 (1998), p. 424-426. 11.
Lind, Journal of Solid State Chemistry Vol. 180 (2007), p. 3504-3509. 13.
Tremel, Journal of Materials Chemistry Vol. 19 (2009), p. 2760-2765. 14.
Online since: October 2014
Authors: Shi Rong Wang, Fei Zhang, Xiang Gao Li, Yin Xiao, Lu Jin Pan
By enlarging 10 times of the experimental conditions, we got the yield 19.0%.The structures of these two compounds are certificated by IR, MS, NMR, HPLC.
Chemistry, 2007, 70(2): 143-146
Chemistry of 1, 3-Butadiene-2, 3-dicarbonitrile.
Journal of Organic Chemistry, 1978, 43: 926-929
Journal of Photochemistry and Photobiology A: Chemistry, 2009, 206, 213-219
Online since: February 2011
Authors: Hua Ling Sun, Zhe Yuan Ji, Xiao Ling Lv
Moreover, the colour and stability of anthocyanin pigments are dependent on several factors, including structure and concentration of the pigment, pH, temperature and light intensity.
Food Chemistry, 2006, 94(3):465—468
Agricultural and Food Chemistry, 2002, 50(25):7461—7466
Food Chemistry, 1998, 63(4):435—440
Agricultural and Food Chemistry, 1999, 47(1):4631—4637
Online since: July 2013
Authors: Atsushi Nakahira, Masato Tsujiguchi, Tadashi Kobashi, Junji Kanbara, Yasuhiko Utsumi, Nobuaki Kakimori
According to the XRD analysis, it was found that the synthesized sample had zeolite related structure.
And the results of SEM observation of the products suggest that the zeolite structure was obtained as well as XRD results.
Zeolite is applied as catalyst, adsorbent, gas separation membrane, detergent builder and so on because of its excellent adsorptive capacity, gas separation property and ion-exchange capacity caused by unique microporous structures.
In SEM micrograph the cube like structure increase with acid-treatment.
Yamashita, Journals of Materials Chemistry, A novel conversion Process for waste slag: Syhthesis of a hydrotalcite-like compound and zeolite from blast furnace slag and evaluation of adsoption properties, Journal of Materials Chemistry. 20 (2010) 5052-5062
Online since: November 2013
Authors: Piaw Phataib, Songkot Utara
Adsorption Characteristics of Direct Violet Dye by Natural Rubber Chips Songkot Utaraa,and PiawPhataib Polymer Research Group, Division of Chemistry, Faculty of Science Udon Thani Rajabhat University, THAILAND.
The chemical structure of the dye is shown in Fig. 1.
Fig. 1: Structure of Direct Violet 51 Preparation of adsorbent material Natural rubber chips were prepared from concentrated natural latex with a 60% dry rubber content (Thai Rubber Latex Co.
Acknowledgements The author gratefully acknowledges the financial support provided for this research by the Division of Chemistry, Faculty of Science, Udon Thani Rajabhat University, Thailand.
Pereira, Adsorption of anionic and cationic dyes on activated carbons with different surface chemistries.
Online since: November 2013
Authors: Xiao Xia Qing, Kun Yu, Xin Feng Wang, Xian Qing Tian, Xiao Qing Pang, Ning Liu
The flower-like structure of Co3O4 is constructed by nanosheets.
The high capacity delivered by Co3O4 NFs should be attributed to the unique structure.
Journal of Materials Chemistry, 2008, 18: 905–910
Journal of materials chemistry, 2008, 18: 4397-4401
Chemistry-A European Journal, 2009, 15(25): 6169-6174
Online since: July 2012
Authors: Zi Li Liu, Tai Xuan Jia, Su Ling Gao
Catalyzed Oxidation of Cyclohexane over Co-Bi2(MoO4)3 Catalysts Su-ling Gao1 ,a ,Tai-xuan Jia2,b , and Zi-li Liu3,c 1College of Electronic Information & Electrical Engineering, Anyang Institute of Technology, Anyang 455000, China 2College of Chemistry & Environmental Engineering, Anyang Institute of Technology, Anyang 455000, China 3College of Chemistry & Chemical Engineering, Guangzhou University, Guangzhou 510006, Guangdong, China agaosuling163@163.com , bjiataixuan@163.com, c gzdxlzl@163.com Keywords: Cyclohexane; Selective Oxidation; Co-Bi2(MoO4)3; Precipitation Method Abstract.
Micro-structure and essence disciplinarian of Co-Bi2(MoO4)3 were disclosed by XRD and FTIR.
Introduction In recent years, the concept of green chemistry being presented, people paid more and more attention to oxygen as oxygen source, designing novel catalyst, raising cyclohexane liquid phase selective catalytic oxidation reaction speed, selectivity, reducing the equipment investment cost and production cost et al [1-4].
Micro-structure of Co-Bi2(MoO4)3 was revealed by XRD, FT-IR from different sides.
The microscopic structure and immanent regularity were disclosed by XRD, FT-IR from different sides.
Online since: May 2004
Authors: Nilgun Ozer, J.P. Cronin
Several reviews have been published on EC sol-gel materials and devices [2-6] relating that many sol-gel chemistries and materials were used to develop EC coatings and ion storage layers with no particular chemistry process being dominant.
The mesoporous WO3 with pore sizes of 10nm had fast color kinetics for lithium insertion compared to sol-gel derived WO3 without the mesoporous structure.
Svegl et al. [35] developed a sol-gel process to deposit lithiated Ni and Co oxide coatings with layered rhombohedral structure.
However, it is a very expensive material and difficult to produce by sol-gel chemistry.
W: The Physics and Chemistry of Sol-Gel Processing, Academic Press (1990) [10] Hurdich, R: Electron.
Online since: November 2012
Authors: Zhang Fei, Tang Bin
The author applies factor analysis method to discuss the quantitative-rization of chemistry characteristic appraisal of shallow groundwater, three principal factors implying important significances are found through R-type factor analysis of chemistry composition of the selected twelve shallow groundwater samples.
The factor analysis, as a good dimension reduction technique, uses the linear function with few common factors, unobservable and irrelevant, and sum of specific factors to express each variable originally observable in order to rationally explain the correlation among the original variables and simplify the dimensionality and structure of the variable [5-7].
Online since: June 2010
Authors: Tomasz Goryczka, Ewa Maciążek, Izabela Jendrzejewska, Aneta Hanc, Andrzej Kita, Paweł Zajdel, Jerzy Mroziński
X-ray investigations and magnetic properties of CuCr2-xSnxSe4 - compounds Izabela Jendrzejewska 1* , Paweł Zajdel 2, Jerzy Mroziński3 , , Ewa Maciążek1 ,Tomasz Goryczka 4 , Aneta Hanc4 , Andrzej Kita 1 1 University of Silesia, Institute of Chemistry, Katowice, Poland 2 University of Silesia, Institute of Physics, Katowice, Poland 3 Wrocław University, Faculty of Chemistry, Wrocław, Poland 4 University of Silesia, Institute of Materials Science, Katowice, Poland *izajen@wp.pl, pzajdel@us.edu.pl Keywords: ceramic method, X-ray diffraction, Ritveld refinement, magnetic properties Abstract We have observed that doping CuCr2Se4 with tin introduces and then increases the tetrahedral deformation of the spinel structure, which can be connected with the Jahn-Teller (JT) distortion due to Cr 2+ ions in antiprismatic environment.
With the tin doping the magnetic structure evolves from the ferromagnet, through spin-glass like to the antiferromagnetic due to increased AF coupling in the system.
Introduction Chromium copper selenide CuCr2Se4 crystallises in the MgAl2O4-type structure.
All samples were examined using powder X-ray diffraction method in order to make phase analysis and to determinate crystal structures and lattice parameters.
The diffuse character of the transition can be attributed to the increasing chemical disorder in the structure resulting in a spin glass state.