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Online since: June 2022
Authors: Michel Aillerie, Christelle Habis, Jean Zaraket
Indium oxide bixbyite structure.
Zinc oxide structure: crystallizes in wurtzite form. [10] Table 2.
Crystal structure of SnO2. [38] Table 6.
Morsli, Effect of tin incorporation on physicochemical properties of ZnO films prepared by spray pyrolysis, Materials Chemistry and Physics, 91 (2005) 247–252
Sahay, Effect of Al dopants on the structural, optical and gas sensing properties of spray-deposited ZnO thin films, Materials Chemistry and Physics, (2013)
Zinc oxide structure: crystallizes in wurtzite form. [10] Table 2.
Crystal structure of SnO2. [38] Table 6.
Morsli, Effect of tin incorporation on physicochemical properties of ZnO films prepared by spray pyrolysis, Materials Chemistry and Physics, 91 (2005) 247–252
Sahay, Effect of Al dopants on the structural, optical and gas sensing properties of spray-deposited ZnO thin films, Materials Chemistry and Physics, (2013)
Online since: November 2013
Authors: Mohamad Rusop, Nurul Hafizah A. Rahman, Azrif Manut
It is found the effect of EBL is to increase the device turn-on voltage for OLED structure.
However, using OLED structures, Hirata et al. [13] have examined the carrier transport mechanism of a DNA complex.
As reported, the structure exhibited multicolor emission with different voltages.
At the same time, DNA complex EBL also helps to reduce the current in OLED structure.
Jin, Materials science of DNA, Journal of Materials Chemistry, 19 (2009) 1353
However, using OLED structures, Hirata et al. [13] have examined the carrier transport mechanism of a DNA complex.
As reported, the structure exhibited multicolor emission with different voltages.
At the same time, DNA complex EBL also helps to reduce the current in OLED structure.
Jin, Materials science of DNA, Journal of Materials Chemistry, 19 (2009) 1353
Online since: December 2010
Authors: Jian Feng Liang, Yu Chang
Study on the preparation and the construction technology of anti-static and anti-corrosion self-leveling floor coating
Yu Chang1,2,3,a, Jianfeng Liang4,b
1 School of Chemistry and Environment, South China Normal University, Guangzhou ,510006,
P.
The coating structure and the matching construction technology are designed for the anti-static and anti-corrosion self-leveling floor coating application.
Graphite also has appropriate conductivity for the anti static system due to its layer-structure.
Design for coating structure As shown in Fig.1, anti-static and anti–corrosion coating structure consists of leveling layer, fiberglass-cloth anticorrosive coating, antistatic grounding system, conductive grout layer and antistatic anticorrosive surface layer.
Combining anti-static and anti-corrosion floor structures makes this coating structure have many good characteristics such as permanent anti-static electricity, anti-scratching, anti-wearing, anti-dust and anti-chemical corrosion properties.
The coating structure and the matching construction technology are designed for the anti-static and anti-corrosion self-leveling floor coating application.
Graphite also has appropriate conductivity for the anti static system due to its layer-structure.
Design for coating structure As shown in Fig.1, anti-static and anti–corrosion coating structure consists of leveling layer, fiberglass-cloth anticorrosive coating, antistatic grounding system, conductive grout layer and antistatic anticorrosive surface layer.
Combining anti-static and anti-corrosion floor structures makes this coating structure have many good characteristics such as permanent anti-static electricity, anti-scratching, anti-wearing, anti-dust and anti-chemical corrosion properties.
Online since: April 2016
Authors: Sung Hoon Kim, Gi Hwan Kang
The Aligned Carbon Microcoils Having the Straight Type Overall Geometry
Gi-Hwan Kang1 and Sung-Hoon Kim1,a*
Department of Engineering in Energy & Applied Chemistry, Silla University, Busan 617-736, Republic of Korea
ashkim@silla.ac.kr
Keywords: Aligned carbon microcoils, Straight type overall geometry, Temperature maintaining technique, SF6 incorporation, Thermal chemical vapor deposition.
Their morphologies and crystal structures were investigated and compared with the randomly grown carbon microcoils having the coil or twist type overall geometry.
We could observe the enhancement of the (002) peak in XRD spectra of the aligned carbon microcoils indicating the existence of the more regular structure in the aligned carbon microcoils.
Based on the results of the XRD data we can confirm that the samples formed by the aligned CMCs have a more regular crystal structure compared with the samples formed by the randomly-grown CMCs.
The aligned-CMCs have a more regular crystal structure compared with the samples formed by the randomly-grown CMCs.
Their morphologies and crystal structures were investigated and compared with the randomly grown carbon microcoils having the coil or twist type overall geometry.
We could observe the enhancement of the (002) peak in XRD spectra of the aligned carbon microcoils indicating the existence of the more regular structure in the aligned carbon microcoils.
Based on the results of the XRD data we can confirm that the samples formed by the aligned CMCs have a more regular crystal structure compared with the samples formed by the randomly-grown CMCs.
The aligned-CMCs have a more regular crystal structure compared with the samples formed by the randomly-grown CMCs.
Online since: February 2012
Authors: Meng Hua Qin, Ying Juan Fu, Ying Ying Shan
The structure of the resulting product was characterized by FT-IR.
Therefore, to design and synthesize a kind of water-soluble cationic polymer with novel structure is gaining more and more attention.
S-CPAM with high branched structure and high cationic density can act as retention aids of high efficiency in papermaking.
Structure and dimensions of PAMAM/PEG dendrimer-star polymers.
Wet end chemistry of papermaking (Chinese).
Therefore, to design and synthesize a kind of water-soluble cationic polymer with novel structure is gaining more and more attention.
S-CPAM with high branched structure and high cationic density can act as retention aids of high efficiency in papermaking.
Structure and dimensions of PAMAM/PEG dendrimer-star polymers.
Wet end chemistry of papermaking (Chinese).
Online since: October 2006
Authors: Mikolaj Szafran, Gabriel Rokicki
The influence of chemical structure of these copolymers on the properties of
alumina ceramics is discussed.
Influence of copolymer chemical structure on the properties of the ceramic tapes.
The final chemical structure of these compounds is formed as a result of polymerization of appropriately selected, mostly water soluble monomers.
The chemical structure of the polymer used should be designed taking into consideration both the kind of powder and the method of formation.
Acknowledgements This work was financially supported by the Faculty of Chemistry of Warsaw University of Technology (grant No 504G/1020/0487 and 504G/1020/0592) References [1] M.
Influence of copolymer chemical structure on the properties of the ceramic tapes.
The final chemical structure of these compounds is formed as a result of polymerization of appropriately selected, mostly water soluble monomers.
The chemical structure of the polymer used should be designed taking into consideration both the kind of powder and the method of formation.
Acknowledgements This work was financially supported by the Faculty of Chemistry of Warsaw University of Technology (grant No 504G/1020/0487 and 504G/1020/0592) References [1] M.
Online since: December 2011
Authors: Jun Feng Li, Jiu Ba Wen, Quan An Li, Jing Ling Ma
The cast alloy contains the hexagonal structure MgZn2 and the orthorhombic structure Al6Mn precipitates, but after aged the precipitates of the cubic structure Mg2Zn11 were found.
So the alloy contains the hexagonal structure MgZn2 precipitate.
So the alloy contains the orthorhombic structure Al6Mn precipitate.
Electroanalytical Chemistry, 2007 (585): 220-229 [3] Salinas D R, Garcia S G, Bessone J B.
So the alloy contains the hexagonal structure MgZn2 precipitate.
So the alloy contains the orthorhombic structure Al6Mn precipitate.
Electroanalytical Chemistry, 2007 (585): 220-229 [3] Salinas D R, Garcia S G, Bessone J B.
Online since: June 2015
Authors: Nor Diyana Abdul Aziz, Kelimah Elong, Norlida Kamarulzaman
X-Ray diffraction results showed that both samples are pure of tetragonal structure with space group P42/mnm.
The XRD patterns corresponding to the tetragonal structure show that both samples are pure and no impurity peaks are observed.
References [1] Handbook of Chemistry and Physics, 62nd Edition, 1981-82, CRC Press, Boca Raton, FL
The XRD patterns corresponding to the tetragonal structure show that both samples are pure and no impurity peaks are observed.
References [1] Handbook of Chemistry and Physics, 62nd Edition, 1981-82, CRC Press, Boca Raton, FL
Online since: January 2013
Authors: He Jun Li, Zi Bo He, Xiao Hong Shi
The results showed that the as-obtained coatings were possessed of a dense and uniform structure, and the SiC content in coatings increased with an increment of the molar ratio of H2 to MTS.
Fig.5 The weight loss curves of coated samples at 900 °C and 1500 °C Conclusion C/SiC graded coating was deposited on C/C composites by LPCVD method using CH3SiCl3/H2 as precursors, and the as-obtained coating had a dense and uniform structure.
Melius, Theoretical study of the thermlchemistry of molecules in the Si-C-Cl-H system, Journal of Physical Chemistry 97 (1993) 720-728.
Fig.5 The weight loss curves of coated samples at 900 °C and 1500 °C Conclusion C/SiC graded coating was deposited on C/C composites by LPCVD method using CH3SiCl3/H2 as precursors, and the as-obtained coating had a dense and uniform structure.
Melius, Theoretical study of the thermlchemistry of molecules in the Si-C-Cl-H system, Journal of Physical Chemistry 97 (1993) 720-728.
Online since: July 2012
Authors: Chu Sik Park, Su Gyung Lee, Eun Jee Kang, Young Ho Kim, Hyo Sub Kim
Reaction characteristic of MeAPSO-34 (Me=Mn, Co) catalysts for olefins production from dimethyl ether
Young-Ho Kim1,a, Su-Gyung Lee1,b, Eun-Jee Kang1,c, Hyo-Sub Kim1,d
and Chu-Sik Park2,e
1 Department of Fine Chemical Engineering & Applied Chemistry, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejon 305-764, Republic of Korea
2Hydrogen Energy Research Center, Korea Institute of Energy Research, 71-2 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea
ayh_kim@cnu.ac.kr, bses-sg@cnu.ac.kr, cej_kang@cnu.ac.kr, dhskim05@cnu.ac.kr, ecspark@kier.re.kr
Keywords: DME (dimethyl ether), DTO (DME to olefins) reaction, SAPO-34, MeAPSO-34, Light olefins (C2=~C4=)
Abstract
In DME to olefins (DTO) reaction, SAPO-34 catalyst with CHA structure is well known to be one of the catalysts with good performance.
Among the SAPOs molecular sieve, SAPO-34, with a chabazite material of three-dimensional structure with the entrance pore size of 0.38 nm, is widely used due to the shape selectivity in the DTO reaction [1,2].
Among the SAPOs molecular sieve, SAPO-34, with a chabazite material of three-dimensional structure with the entrance pore size of 0.38 nm, is widely used due to the shape selectivity in the DTO reaction [1,2].