Search results

Facile preparation of microporous carbons with high specific capacitance from coal tar pitch for supercapacitors Nan Zhao, Xiaojun He a, Pinghua Ling, Ruchin Li, Moxin Yu, Xiaoyong Zhang, Mingdong Zheng School of Chemistry and Chemical Engineering, Anhui Key Lab of Coal Clean Conversion and Utilization, Anhui University of Technology, 59 Hudong Road, Maanshan 243002, China axjhe@ahut.edu.cn Keywords: Coal tar pitch; Microwave heating; Conventional heating; Microporous carbon; Supercapacitors Abstract.
The capacitance of porous electrodes depends on the porosity, surface chemistry, the wettability and conductive properties of porous materials.
Here, the effects of the KOH/CTP mass ratios and the heating modes on the pore structure parameters and electrochemical performance of MCs in supercapacitors are addressed.
The pore structure characterization of MCs was performed on the basis of low temperature nitrogen adsorption/desorption isotherms measured on a sorptometer ASAP2010.

The formation of Ti2Fe2O7 was possibly due to the volatilization of the precursor during the thermal treatment may result in a loss of stoichiometry, giving rise to the formation of either Fe-rich phases or the appearance of titanium and oxygen vacancies in the FeTiO3 structure.
At the region below 800 cm-1, the fundamental metal-oxygen bond can be observed a strong absorption peaks at 430cm-1 and 619cm-1, respectively represent Fe-O stretching vibration of FeO6 group in the perovskite structure and absorption of vibration Ti-O bond.
Shariati: Arabian Journal of Chemistry (2014), p. 1 [11] A.
Ringer, & Y.Chen: Journal of Physical Chemistry Vol. 35 (2011), p. 17297 [15] J.

It has been demonstrated that PLA could be blended with POM in an effort to modify the structure and properties of the binary blend [4-5].
“Structure And Properties Of Polylactide/Natural Rubber Blends”.
Materials Chemistry and Physics 129.3(2011): 823-831 [3] Bijarimi, Ahmad, and Alam (2016).
The Journal of Physical Chemistry B 118, 7167-7176

The other research is about active carbon from rice straw using chemistry activation.
Characterization The Characterizations are XRD test to know the phase that produced, PSA test to know the size of particle, SEM-EDS test to know the morphology, percentage of unsure and chemistry composition in the electrode sample.
The diffractogram pattern on figure 1 produce amorphous structure with peak that is not sharp.
Energy which is given to the particle along the milling process can dislocate the cell structure and produce the random nanoparticle.

Synthesis and Characterization of Poly(o-methoxyaniline) Microsheets with pH-Sensitive Fluorescence Properties Yanfeng Guoa, Donghao Sunb and Ying Wang Mailbox NO.101, College of Chemistry, Chemical Engineering and Materials, Soochow University, No. 199 Ren’ai Road, Suzhou 215123, P.R.
Heteropolyacids (HPA) and their salts have interesting properties of redox and acid-base chemistry, resulting in potential applications in heterogeneous catalysis and electrocatalysis etc[10,11].
Results and Discussion A typical SEM image of the obtained POMA is shown in Fig. 1A, which shows intercrossed sheet-like structures.
Lefrant, Electrochemical behaviour of polyaniline films doped with heteropolyanions of Keggin structure, Electrochimica Acta 44 (1999) 2117-2123

Synthesis and Interleukin-6 Inhibitory Activities of 3-Alkyloxylindolizine Derivatives Chengqiao Cao1, a, Yong Wei1,b, Kun Zou1,c, Jianfeng Chen1,d, Nianyu Huang1,e,* 1Hubei Key Laboratory of Natural Products Research and Development, College of Chemistry and Life Sciences, China Three Gorges University, Yichang, Hubei 443002, China acaochengqiao@yahoo.cn, bwei520yong@126.com, ckzou@ctgu.edu.cn, dchenjianfeng2003@yahoo.com.cn, ehny115@126.com Keywords: IL-6 inhibitors, anti-inflammatory agents, 3-alkyloxylindolizine, synthesis Abstract.
Results and Discussion 2.1 Chemistry With the aim to obtain potentially anti-inflammatory indolizine and study their structure-activity relationships, a series of 3-alkyloxylindolizine derivatives were synthesized through the Sonogashira coupling and intramolecular cyclization reaction from the propargyl ether (2) and 2-bromopyridine (Scheme 1).
The further studies on the structure-activity relationship of these indolizine derivatives and their anti-inflammatory activity were under way in our research group.

., Tomsk, 634050, Russia 4Komi Chemistry Institute of Scientific Centre of Ural branch of Russian Academy of Sciences, 48, Pervomayskaya St., Syktyvkar, 167982, Russia aplot160@mail.ru Keywords: new pharmaceutical materials, 4-methyl-2,6-diisobornylphenol, ischemia/reperfusion, antiarrhythmic activity, lipid peroxidation, antioxidant Abstract.
It has been proved that the antioxidant properties of a hindered phenol molecule are predetermined by the presence of the OH groups in its structure, which form a conjugated system with aromatic ring bonds.
The synthesis of compounds of this group was first performed at the Komi Chemistry Institute of Scientific Centre of the Ural branch of the Russian Academy of Sciences (Syktyvkar, Russian Federation) [6].
Chemical structure of dibornol (4-methyl-2,6-diisobornylphenol), M.m.= 380.61.

Experimental Carbon doped oxide dielectrics comprised of Si, C, O, and H (SiCOH) have been prepared by plasma enhanced chemical vapor deposition (PECVD) from octamethylcyclo-tetrasiloxane (OMCTS) for films with k≥2.7, and a proprietary chemistry for films with k≤2.4. 300mm wafers comprised of carbon doped oxide SiCOH films with an underlying adhesion layer were used for both full wafer as well as bench-top coupon testing.
The chemical structure of all films, pre and post strip, has been characterized by Fourier transform infrared spectroscopy (FTIR).
In the case of the more conventional wet chemistries included, as the k Figure 2. a) cross section (90°) SEM image of the as-received PECVD SiCOH film (k=2.2); b) 90°and c) 60° view of same film processed with RegenSi; d) 90°and e) 60° after HF processing value decreased the SiCOH films were more difficult to strip and surface defects were clearly visible to the naked eye.
The chemical structure of the blanket SiCOH films was investigated using FTIR spectroscopy and the resulting spectra for the 2.2 k film are shown in Figure 3.

The Preparation of PVAc with Lower PDI through RATRP in Miniemulsion Polymerization Haike Feng1,2,a, Yi Dan2,b 1College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, 310036, China 2State Key Laboratory of Polymer Materials Engineering of China,Polymer Research Institute of Sichuan University, Chengdu 610065, China a fhkfhk@163.com, bdanyichenweiwei@163.com Keywords: reverse atom transfer radical polymerization, molecular weight distribution, polyvinyl acetate, miniemulsion polymerization Abstract.In this paper, reverse atom transfer radical polymerization (RATRP) was used to prepare polyvinyl acetate (PVAc) with lower polydispersity index (PDI).
Figure 4 DSC curve of PVAc with molar ratio of AIBN/CuCl2/PMDETA of 1.5:1:2 Figure 5 1H-NMR curve of PVAc with molar ratio of AIBN/CuCl2/PMDETA of 1.5:1:2 Structure of PVAc The structure of the obtained PVAc was also studied by DSC and 1H-NMR.
Boutevin:Macromolecular Chemistry and Physics Vol.201 (2000), p.1189-1199

This paper focuses on the effects of V substitution for Cr on the mechanical properties and microstructure of Ni-5.0B-51.0Mo-(17.5-X)Cr-XV (mass%) model cermets in order to understand improvements of mechanical properties by clarifying the structure-property relationship.
Structure-property relationship Fig. 4 shows the mean particle size and the contiguity [6] of the M3B2 complex boride measured by an image analyzer.
Takagi: Material Chemistry and Physics, 67 (2001) 214-219
Yamasaki: Journal of Solid State Chemistry, 154 (2000) 263-268