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Online since: October 2011
Authors: Qing Wang, Ya Hui Zhang
Biomorphic ceramics based on biological structures
Q.
China 2State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Taiyuan 030001, P.R.
Biomorphic ceramics is a novel inorganic materials with hierarchical structures derived from natural biological structures.
Pollen appears the alveolate structure.
Paper and jute is the fiber structure.
China 2State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Taiyuan 030001, P.R.
Biomorphic ceramics is a novel inorganic materials with hierarchical structures derived from natural biological structures.
Pollen appears the alveolate structure.
Paper and jute is the fiber structure.
Online since: November 2011
Authors: Yan Yang, Liu Ting Yan, Xiao Li, Wen Gui Duan, Rong Huan Qin
Synthesis and Crystal Structure of the Cobalt (Ⅱ) Complex Constructed
from 2,2'-Bibenzimidazole and 5-Nitroisophthalic Acid
Yan YANG1,2,a*, Liu-Ting YAN2,b, Xiao LI 1,c, Rong-Huan QIN1,d,
Wen-Gui DUAN2,e
1 School of Chemistry and Material, Yulin Normal University, Yulin 537000, People's Republic of China
2 School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, People's Republic of China
ayy135175@163.com, bYLT.7801084@163.com, cleex@126.com, dhuan-2000@126.com, dwgduan@gxu.edu.cn.
Keywords: Cobalt(II) Complex, 2,2’-Bibenzimidazole, Crystal Structure Abstract.
formed in the crystal structure of 1.
Fig. 1 - 2 illustrate the structure of 1.
SHELXL-97, Program for Crystal Structure Refinement, University of Göttingen, Göttingen (Germany 1997)
Keywords: Cobalt(II) Complex, 2,2’-Bibenzimidazole, Crystal Structure Abstract.
formed in the crystal structure of 1.
Fig. 1 - 2 illustrate the structure of 1.
SHELXL-97, Program for Crystal Structure Refinement, University of Göttingen, Göttingen (Germany 1997)
Online since: August 2011
Authors: Soumia Boulefred, Fatema Zohra Chiboub-Fellah, Mustayeen Ahmed Khan, Abdelghani Chiboub Fellah
Khan3,d
1: Department of Chemistry, Faculty of sciences, Tlemcen university, Algeria
2: Chemist Director, Department of hydraulics, faculty of Technology, Tlemcen university, Algeria
3: Laboratory of Coordination Chemistry, Faculty of Pharmacy, Angers University, France.
Solvated Co2+ shows a maximum at 526 nm with a low to medium intensity, characteristic of the octahedral structure and corresponding to [4T1g (F) → 4T1g (P)] electronic transition [33].
Wilkinson in: Advanced Inorganic Chemistry., edited by Wiley 4th Edn, p. 768, New York (1980)
Ulanov, General Chemistry Vol. 74,6, (2004), p. 818-820
Masuda, Solution Chemistry Vol. 13 (1984), p. 7
Solvated Co2+ shows a maximum at 526 nm with a low to medium intensity, characteristic of the octahedral structure and corresponding to [4T1g (F) → 4T1g (P)] electronic transition [33].
Wilkinson in: Advanced Inorganic Chemistry., edited by Wiley 4th Edn, p. 768, New York (1980)
Ulanov, General Chemistry Vol. 74,6, (2004), p. 818-820
Masuda, Solution Chemistry Vol. 13 (1984), p. 7
Online since: April 2019
Authors: Ingrīda Augšpole, Velga Miķelsone, Artūrs Niklāvs, Fredijs Dimiņš
Therefore, microwaves do not affect directly the molecular structures, since the chemical bonds have an energy ranging from 20 to 50 kcal mol-1.
Schlabach, Microwave plasma synthesis of materials - from physics and chemistry to nanoparticles: A materials scientist’s viewpoint, Inorganics. 2 (2014) 468-507
Schieberle, Food Chemistry, Berlin, Heidelberg, Springer – Verlag, 2009, 1114
Kowalski, Changes of antioxidant activity and formation of 5-hydroxymethylfurfural in honey during thermal and microwave processing, Food Chemistry. 141(2) (2013) 1378-1382
Food Chemistry. 159 (2014) 244-249
Schlabach, Microwave plasma synthesis of materials - from physics and chemistry to nanoparticles: A materials scientist’s viewpoint, Inorganics. 2 (2014) 468-507
Schieberle, Food Chemistry, Berlin, Heidelberg, Springer – Verlag, 2009, 1114
Kowalski, Changes of antioxidant activity and formation of 5-hydroxymethylfurfural in honey during thermal and microwave processing, Food Chemistry. 141(2) (2013) 1378-1382
Food Chemistry. 159 (2014) 244-249
Online since: September 2014
Authors: D.H. Baek, H. J. Förster, G. Heinze, John Oshinowo, Th. Mathée, M. Fryda
The electrodes have a specially designed surface structure, in order to improve hydrodynamics, which yield into high efficiency and excellent process stability.
In order to have no process bottle neck, for each chemistry (CW, AW, O3-DIW) one single cell is needed: that means in total three cells (3).
Figure 4: Overview of the Redox potential (ORP) as a function of pH-value for various FEOL cleaning chemistry.
Figure 5: Particle removal efficiency (PRE) in (%) versus particle size (nm) for Electrolyzed water (EW) process at room temperature (black bars), compared to the classical SC1 chemistry (white bars) at 65oC.
Martin Knotter: The Chemistry of Wet Cleaning (K.
In order to have no process bottle neck, for each chemistry (CW, AW, O3-DIW) one single cell is needed: that means in total three cells (3).
Figure 4: Overview of the Redox potential (ORP) as a function of pH-value for various FEOL cleaning chemistry.
Figure 5: Particle removal efficiency (PRE) in (%) versus particle size (nm) for Electrolyzed water (EW) process at room temperature (black bars), compared to the classical SC1 chemistry (white bars) at 65oC.
Martin Knotter: The Chemistry of Wet Cleaning (K.
Online since: July 2014
Authors: E. N. Pokrovskaya, T. G. Beltsova
Beltsova2b
1 Russian Federation, Moscow city, Yaroslavskoye shosse 26, Jeneral chemistry department, MSBU
2 Russian Federation, Moscow city, Yaroslavskoye shosse 26, Jeneral chemistry department, MSBU
a elenapokrovskaya@bk.ru, b t_belcova@mail.ru
The mechanism and conditions of superficial modifying of wood by phosphoric and siliceous organic compounds are studied.
Hydrophobization of wood happens with the help of polymers and siliceous organic compounds, the effect of the decrease of hydroscopability occurring because of the block system of hydro groups, filling of capillary porous structure of density of suture of lignocarbohydrate mould[5].
With phtorides being present (NH4F, KF, Cs F) polymeric precipitation has an absolutely different form with capillary-poreous structure of wood being filled more fully.
Phosphorus contained organic compounds (PhOC) have a high penetrating ability; absolutely filling intercellular structure of wood.
Forest journal. 2004 №1 pp. 61-66 [2] Study of hydrophobization of wood by phosphorus and silicium organic compounds. / Chemistry of wood. 1990 №1 pp.90-96 [3] Study of the reaction of phosphorization of cellulose and some components of wood by Threechlor ethylphosphate / Chemistry of wood. 1981 №1 pp. 96-100 [4] Invention Patent 2006. №2325989 [5] Belgaceum M.N., Gandini A.
Hydrophobization of wood happens with the help of polymers and siliceous organic compounds, the effect of the decrease of hydroscopability occurring because of the block system of hydro groups, filling of capillary porous structure of density of suture of lignocarbohydrate mould[5].
With phtorides being present (NH4F, KF, Cs F) polymeric precipitation has an absolutely different form with capillary-poreous structure of wood being filled more fully.
Phosphorus contained organic compounds (PhOC) have a high penetrating ability; absolutely filling intercellular structure of wood.
Forest journal. 2004 №1 pp. 61-66 [2] Study of hydrophobization of wood by phosphorus and silicium organic compounds. / Chemistry of wood. 1990 №1 pp.90-96 [3] Study of the reaction of phosphorization of cellulose and some components of wood by Threechlor ethylphosphate / Chemistry of wood. 1981 №1 pp. 96-100 [4] Invention Patent 2006. №2325989 [5] Belgaceum M.N., Gandini A.
Online since: June 2019
Authors: Yan Wang, Jun Rong Yu, Zu Ming Hu, Jing Zhu, Xing Ke Zhang, Na Li
Although these studies solved the problem to a certain extent, but these modifications inevitably destroyed the original molecular chain structure and aggregate structure of PPTA which may affect the excellent performance of PPTA[16-18].
FTIR spectra of LMW-PPTA-NH2 and LMW-PPTA-COCl The chemical structures of LMW-PPTA-NH2 and LMW-PPTA-COCl were characterized by FTIR.
These results suggest the chemical structure of LMW-PPTA-NH2 and LMW-PPTA-COCl.
The structure of PPTA chains consist of benzene and amide bonds, which are easy to construct hydrogen bonds between PPTA chains.
Binnemans, Synthesis of poly-p-phenylene terephthalamide (PPTA) in ionic liquids, Acs Sustainable Chemistry & Engineering, 6 (2017) 1362-1369
FTIR spectra of LMW-PPTA-NH2 and LMW-PPTA-COCl The chemical structures of LMW-PPTA-NH2 and LMW-PPTA-COCl were characterized by FTIR.
These results suggest the chemical structure of LMW-PPTA-NH2 and LMW-PPTA-COCl.
The structure of PPTA chains consist of benzene and amide bonds, which are easy to construct hydrogen bonds between PPTA chains.
Binnemans, Synthesis of poly-p-phenylene terephthalamide (PPTA) in ionic liquids, Acs Sustainable Chemistry & Engineering, 6 (2017) 1362-1369
Online since: August 2021
Authors: Leslie Joy L. Diaz, Ivy Ann C. Razonado, Miguel Lorenzo H. Yorro, Mitch Irene Kate Oyales, Marietta M. Valdez-Liu
Relevant filler properties, such as composition, particle size, surface area, structure, and surface chemistry, of the as-received activated carbon (coded as AC) and reference carbon black (coded as CB) were characterized.
The quality of reinforcing fillers depends on the purity, structure, particle size, surface area, and surface chemistry.
In terms of surface chemistry, AC was found to be basic, while CB has neutral pH.
This is expected due to the larger particle size and porous structure of AC.
Rubber Compounding: Chemistry and Applications, 2nd Edition.
The quality of reinforcing fillers depends on the purity, structure, particle size, surface area, and surface chemistry.
In terms of surface chemistry, AC was found to be basic, while CB has neutral pH.
This is expected due to the larger particle size and porous structure of AC.
Rubber Compounding: Chemistry and Applications, 2nd Edition.
Online since: August 2009
Authors: Xin Wang, Hui Jia, Bei Hong Long, Wei Xu, Wei Tao Zheng
Effect of sputtering input power of Co on structure and magnetic
properties of Fe-Co-N thin films
Wang Xin
1a,Jia Hui2b,Zheng Weitao
3c,Xu Wei4d,and Long Beihong5e
1
Department of Materials Science, Key Laboratory of Automobile Materials of MOE, Jilin University,
Changchun, 130012, PR China
2
School of Physics, Beihua University, Jilin, 132021, PR China
3
Department of Materials Science, Key Laboratory of Automobile Materials of MOE, Jilin University,
Changchun, 130012, PR China
4
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry,
Jilin University, Changchun, 130012, PR China
5
Department of Materials Science, Jilin University, Changchun, 130012, PR China
awang_xin@jlu.edu.cn, bbhjiahui1963@yahoo.com.cn, cwtzheng@jlu.edu.cn, dxuw@jlu.edu.cn,
e
Longbeihong@jlu.edu.cn
Keywords: Fe-Co-N film, input power, saturation magnetization, coercivity
Abstract.
The composition, structure, and magnetic properties were examined by X-ray photoelectron spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and superconducting quantum interference device.
The structure and magnetic properties (Ms and coercivity) of the Fe-Co-N films have been investigated.
The crystal structures of the films were examined with X-ray diffration (XRD) using Cu Kα radiation (Bruker, D8tools) and a transmission electron microscopy (TEM) (JEM-2100F at 200 kV).
Combined with the analysis of XRD and TEM analysis, the structures of the Fe-Co-N Table 1 Structure and magnetic properties of Fe-Co-� film deposited at 10% nitrogen fraction under different Co sputtering powers Samples I (A), U (V) Structure Ms (Am2/kg) Hc (kAm-1) Fe0.4Co0.04 0.04, 280 γ'+Co3N 156.25 4.70 Fe0.4Co0.07 0.07, 200 γ'+α'+Co3N 252.85 3.66 Fe0.4Co0.1 0.1, 340 γ' 154.50 7.25 Fe0.4Co0.2 0.2, 400 γ'+FeCoN/α" 170.50 2.95 films have been determined, as are shown in table 1.
The composition, structure, and magnetic properties were examined by X-ray photoelectron spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), and superconducting quantum interference device.
The structure and magnetic properties (Ms and coercivity) of the Fe-Co-N films have been investigated.
The crystal structures of the films were examined with X-ray diffration (XRD) using Cu Kα radiation (Bruker, D8tools) and a transmission electron microscopy (TEM) (JEM-2100F at 200 kV).
Combined with the analysis of XRD and TEM analysis, the structures of the Fe-Co-N Table 1 Structure and magnetic properties of Fe-Co-� film deposited at 10% nitrogen fraction under different Co sputtering powers Samples I (A), U (V) Structure Ms (Am2/kg) Hc (kAm-1) Fe0.4Co0.04 0.04, 280 γ'+Co3N 156.25 4.70 Fe0.4Co0.07 0.07, 200 γ'+α'+Co3N 252.85 3.66 Fe0.4Co0.1 0.1, 340 γ' 154.50 7.25 Fe0.4Co0.2 0.2, 400 γ'+FeCoN/α" 170.50 2.95 films have been determined, as are shown in table 1.
Online since: March 2012
Authors: Gabriel Bernardo, David G. Bucknall, Meisha L. Shofner, Deb Nabankur, Dharmaraj Raghavan, Bobby G. Sumpter, Scott Sides, Abul Huq, Alamgir Karim
Phase-Morphology and Molecular Structure Correlations in Model Fullerene-Polymer Nanocomposites
David G.
Of particular relevance ultimately to device performance is the molecular structure as well as mesoscale phase behaviour.
The understanding of these systems is enhanced through the study of several different polymer matrices with varied morphology and chemistry.
These peaks resulted from structures with sizes of 120Å and 17Å, respectively.
Frisbie, Journal of Physical Chemistry C, 112 (2008) 17726 [9] C.
Of particular relevance ultimately to device performance is the molecular structure as well as mesoscale phase behaviour.
The understanding of these systems is enhanced through the study of several different polymer matrices with varied morphology and chemistry.
These peaks resulted from structures with sizes of 120Å and 17Å, respectively.
Frisbie, Journal of Physical Chemistry C, 112 (2008) 17726 [9] C.