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Online since: July 2012
Authors: Yan Na Li, Shu Kun Lin
Crystal Growth of 5-Sulfosalicylato Potassium Yanna Li a, Shukun Lin* b School of Chemistry and Chemical Engineering, Fuzhou University, Fujian350108, China aliyanna8822@126.com, blsk195625@fzu.edu.cn Keywords: 5-sulfosalicylato potassium, analyzing crystal, crystal growth, diffraction property Abstract.
Synthesis and crystal structure of 5-sulfosalicylato potassium (PSS) have been presented [7, 8].
Fig. 3 IR spectrum of PSS Fig. 4 TG-DSC of the total PSS Structure and Growth The crystal structure of the compound [K (C7H5O6S) (H2O)3]n were reported[7].
The structure of [K (C7H5O6S) (H2O)3]n in the literature[7] shows a good cleavability along the b axis.
Online since: May 2013
Authors: Hui Rong Guo, Yue Mei Qin, Xing Feng Shi, Zi Juan He, Miao Wang, Yun Long Wang
The structure and chemical composition of the coatings were characterized.
The structure of the coating was studied.
[8] Fan-Ya Jin, Ke Wang, Ming Zhu, et al., Materials Chemistry and Physics, 114(2009) 398-401 [9]K.R.
Online since: June 2012
Authors: Jie Yu, Yu Cao, Jing Chao Chen, Jian Chun Cao, Xiao Long Zhou, Yuan Yuan Peng
The pore structure and CO gas sensing property of porous SnO2-In2O3 composite materials can be improved with the increase of SnO2 contents.
The grain size enlarges and some pores structure became smaller by the extrusion of grain.
The optimum sintering temperature is 1573K by the pores structure.
The grain size enlarges which is not conducive to the formation of pore structure.
Materials Chemistry and Physics. 115 (2009) 196-199
Online since: July 2014
Authors: Yan Hua Li
The formula proposed is not suitable to regenerate the exact contour of fine structure in the ionization cross section curve.
The probable error is estimated to be approximately 20%, but the error is larger than 40% and no fine structures are accounted for near the threshold.
Electron impact ionization cross sections are important quantities in a variety of applications and technologies as diverse as low-temperature processing plasmas, fusion edge plasmas, gas discharges, planetary, stellar, and cometary atmospheres, radiation chemistry, mass spectrometry, and chemical analysis [2].
Without considering the fine structure in the process of calculation, the probable error is estimated to be approximately 20%, but the error is larger than 40% and no fine structures are accounted for near the threshold.
Online since: March 2013
Authors: Babasaheb N. Dole, Vishwanath D. Mote
X- ray diffraction analysis reveals that the Co doped ZnO nanopowders crystallize in wurtzite structure without any impurity phases.
The crystal structure of the synthesized sample was studied using X-ray diffractometer (Model: PW-3710) employing Cukα (λ = 1.5406Ao). 3.
All the detectable peaks could be indexed as the ZnO wurtzite structure found in the standard reference data [JCPDS].
It shows that the Co goes to Zn sites in the structure.
Dole, Synthesis and Structural Study on Co Substituted ZnO Nanoscale Crystals, Asian Journal of Chemistry, 23 (2011), 5595-5597
Online since: October 2007
Authors: Guang Zhu, Mao Fa Wang, Fei Li, Hong Dan Zhang, Peng Fei Ren, Xiao Ping Zou, Jin Cheng
Our results suggested that it would tend to form relatively uniform nanofibers when the catalyst precursor was iron nitrate, however, to form some helical structure nanofibers when the catalyst precursor was iron chloride.
Comparison of the two images, we can find that there are some helical structures when the catalyst precursor is iron chloride.
Raman spectroscopy is a simple and good tool for analyzing the structure of the carbon nanofibers.
Our results indicate that iron nitrate would generate nanofibers with relatively good uniformity, while iron chloride would generate nanofibers with some helical structures.
Meng of Technical Institute of Physics and Chemistry of CAS for the aid in SEM analysis and F.
Online since: July 2006
Authors: Timothy J. Bastow, Anita J. Hill
The combination of NMR and PALS allows identification of solute aggregate chemistry and defect kinetics during natural aging.
Introduction Many aluminium alloys are strengthened via a precipitation process called age hardening due to the existence of an ordered precipitate structure.
Early work suggested a structure consisting of cylinders 1 to 2nm in diameter with lengths of 4 to 8nm depending on the rate of quench [4].
However it should be noted that 50 years after their existence was proposed there is presently still debate as to their atomic structure with HRTEM and atom probe field ion microscopy (APFIM) comprising the main structural attack.
Defect-assisted solute migration is important to the early stages of decomposition from solid solution that, as discussed above, influence structure development in age hardenable aluminium alloys.
Online since: December 2010
Authors: Yu Hua Yi, Zhen Tong
During the preparation of the low free TDI monomer content prepolymer, relative higher starting TDI/PGMEG ratio was applied, which lead to higher content of the A-B-A (TDI-PTMEG-TDI) structure in the prepolymer compound.
This well organized structure was favorable for the micro-phase separation, leading to relative easy movement of the soft segments, which result in lower compression set and higher rebound in the elastomer.
The phase separation is more completed with the increasing ordering of the main chain structure.
(4)The above advantage in properties of the polyurethane elastomer based on LF-prepolymer is due to its well organized molecular structure and the relative completely phase separation.
[3] Xiaodong Chen, Nanqiao Zhou and Hai Zhang: Comparison Of Stress-Strain Properties Of Castable Polyurethane Elastomers And Rubber Materials, in the Center for the Polyurethanes Industry (CPI) Polyurethanes 2009 Technical Conference. 2009, the American Chemistry Council: National Harbor, MD (Washington, D.C.).
Online since: January 2014
Authors: Hui Ru Wu, Wan Li Fu, Shi Jun Jia, Jian Ping Zhou
The toughening effect may be ascribed to the unique self-assembling structure of SEBSMB in the matrix and a hypothetical model was proposed.
It has similar molecular structure like SBS.
Such a “honeycomb” structure could be ascribed to a typical ductile fracture.
Fig. 6 shows the assumed micro phase structure of SEBSMB formed in the matrix.
Durmaz: Journal of Polymer Science Part A-Polymer Chemistry Vol. 48(2010), p.2862 [3] Mohan, Pragyan: Polymer-Plastics Technology and Engineering Vol. 52(2013), p. 107 [4] R.
Online since: August 2011
Authors: Qiu Ju Zheng, Chao Hong Liu, Xin Wang, Gui Jun Jiang, Wen Lai Zhang
At the same time, we also investigated the relationship between coating structure and removal mechanism of grinding.
Additionally, the results also verify that the performance of material is determined by the structure.
The coated powders have a distinct core-shell structure in which the α-Al2O3 particles act as the nucleus.
Moreover, this coating structure can reduce the usage content of LaPO4.
This is because the composites have a core-shell structure with layered LaPO4 coated α-Al2O3 particles.