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Online since: July 2014
Authors: Shuang Fu, Jie Zhang
This paper was about the synthesized of ionic liquid crystal polymer of benzoic acid type of the tree, and had some tests about the structure characterization and performance, studied the performance of the liquid crystal, let it as the chromatographic stationary phase, preliminary surveying the separation of benzene and homologues.
The commonly used GC stationary liquid is mainly high molecular compound, a small number of liquid crystal polymer, and ionic liquids as the candidate also presents a certain of use prospects[8][9].The highly branched structure of tree molecular and it’s unique monodispersity, presents a good film[10],conform to the requirements and characteristics of chromatographic stationary phase[11], it’s possible to be used for chromatographic stationary phase.
Optical study and structure modelling of PPI liquid crystalline dendrimer derivatives[J].
Chinese Journal of Analytical Chemistry, 2007, 6:865-868.
The commonly used GC stationary liquid is mainly high molecular compound, a small number of liquid crystal polymer, and ionic liquids as the candidate also presents a certain of use prospects[8][9].The highly branched structure of tree molecular and it’s unique monodispersity, presents a good film[10],conform to the requirements and characteristics of chromatographic stationary phase[11], it’s possible to be used for chromatographic stationary phase.
Optical study and structure modelling of PPI liquid crystalline dendrimer derivatives[J].
Chinese Journal of Analytical Chemistry, 2007, 6:865-868.
Online since: January 2013
Authors: Yong Ping Qu, Zengzhi ZHANG
Preparation of Modified Kaolin and Its Properties of Water Retention
Zengzhi Zhanga, Yongping Qub*
School of Mechanical Electronic and Information Engineering,Research Institute of Ecological and Functional Materials,China University of Mining and Technology (Beijing),
Beijing 100083,China
az.zengzhi@163.com,b*quyongpingno1@126.com
Keywords: Modified kaolin, Water retention, Lamellae structure.
Kaolin is a kind of molecular sieve porous material with two-dimensional structure. [3]Changing kaolin layers the intercalated modification is one of the most active researching fields of catalyst and absorbents in the world.
The ideal patent of kaolin is Al2[(OH)4/Si2O5], which is combined by SiO4 tetrahedron and AlO2(OH)4 octagonal according to 1:1 into layer structure.[4] And the layers are connected by Hydrogen. [5]The tight connection of crystal layers and the stable performance are due to the interactions of hydrogen and van der Waals force. [6]The intercalation modification of kaolin is intercalating small molecules into kaolin layers to get intercalation kaolin with larger interlamellar spacing[7] and then mix with other matrixes according to different needs to achieve homodisperse in the nanometer scale.
Because of kaolin’s layer structure, some organic molecules can destroy the hydrogen between kaolin layers and get into the layers to make the layer spacing larger.[8]Many polar small molecules such as hydrazine, potassium acetate, dimethyl sulfoxide, crylic acid, Sodium acrylate and urea can destroy the hydrogen between kaolin layers and get into the layers to get organic intercalated kaolin composite materials.[9] My work is getting propionamide and kaolin to react in solution by stirring in 60℃-70℃ for 30 minutes.
Chemistry, 63 (2000) 20–24
Kaolin is a kind of molecular sieve porous material with two-dimensional structure. [3]Changing kaolin layers the intercalated modification is one of the most active researching fields of catalyst and absorbents in the world.
The ideal patent of kaolin is Al2[(OH)4/Si2O5], which is combined by SiO4 tetrahedron and AlO2(OH)4 octagonal according to 1:1 into layer structure.[4] And the layers are connected by Hydrogen. [5]The tight connection of crystal layers and the stable performance are due to the interactions of hydrogen and van der Waals force. [6]The intercalation modification of kaolin is intercalating small molecules into kaolin layers to get intercalation kaolin with larger interlamellar spacing[7] and then mix with other matrixes according to different needs to achieve homodisperse in the nanometer scale.
Because of kaolin’s layer structure, some organic molecules can destroy the hydrogen between kaolin layers and get into the layers to make the layer spacing larger.[8]Many polar small molecules such as hydrazine, potassium acetate, dimethyl sulfoxide, crylic acid, Sodium acrylate and urea can destroy the hydrogen between kaolin layers and get into the layers to get organic intercalated kaolin composite materials.[9] My work is getting propionamide and kaolin to react in solution by stirring in 60℃-70℃ for 30 minutes.
Chemistry, 63 (2000) 20–24
Online since: September 2018
Authors: Li He, Thomas L. Attard
However, structure loading did not induce material damage, and therefore, there exists similarity between x-DCEPI and DCI+epoxy in Fig. 6(a) and 6(b) due to the large storage modulus found in pure epoxy which provides the necessary stress transferring paths in x-FRP structures.
However, the large loss modulus enacted by DCI helps to transfer energy via its covalent chemistry (bond strength/ enthalpy and molecular vibrations), thus preserving the x-FRP structure and minimizing/ localizing damage, ingenerating substantial resiliency and composite strength sustainability.
Composite Structures, 2008. 84(3): p. 271-281
Composite Structures, 2013. 106: p. 690-702
Rubber Chemistry and Technology, 2009. 82(2): p. 184-193
However, the large loss modulus enacted by DCI helps to transfer energy via its covalent chemistry (bond strength/ enthalpy and molecular vibrations), thus preserving the x-FRP structure and minimizing/ localizing damage, ingenerating substantial resiliency and composite strength sustainability.
Composite Structures, 2008. 84(3): p. 271-281
Composite Structures, 2013. 106: p. 690-702
Rubber Chemistry and Technology, 2009. 82(2): p. 184-193
Online since: April 2009
Authors: Hong Yi Jiang, Fei Chen, Jia Liang Li, Jin Ye Niu
XRD
results of the obtained silicon nitride coatings suggest their phase structure is amorphous.
The crystal structure of the coatings is analyzed by XRD.
And the chemistry composition is tested by the FT-IR (Nicolet 5700, Thermo, USA) and XPS (Perkin-Elmer, PHI5000C, ESCA System) for each.
Therefore, high deposition rate will result in high nucleation rate and thin coating structure.
And there is an increasing trend of the cluster-like structure with the increasing pressure.
The crystal structure of the coatings is analyzed by XRD.
And the chemistry composition is tested by the FT-IR (Nicolet 5700, Thermo, USA) and XPS (Perkin-Elmer, PHI5000C, ESCA System) for each.
Therefore, high deposition rate will result in high nucleation rate and thin coating structure.
And there is an increasing trend of the cluster-like structure with the increasing pressure.
Online since: August 2009
Authors: Li Hua Dong, Yan Sheng Yin, Tao Liu
The surface structure and composition
were then characterized by means of scanning electron microscopy (SEM) with energy dispersive
X-ray spectrum (EDX) and atomic force microscope (AFM).
It could be seen that the Al surface became quite rough (surface roughness Ra is about 3 µm) and developed mountain-like structure when the sample was anodized in a 15wt% sulphuric acid for 2 h (Fig. 1b).
The chemical modification made the surface a specific ordered leaf-like structure (Fig. 2a).
In addition, by preventing wetting of occluded regions such as grooves, pits or holes in the surface, the establishment of a stable, corrosive chemistry is avoided and corrosion initiation is prevented.
It could be seen that the Al surface became quite rough (surface roughness Ra is about 3 µm) and developed mountain-like structure when the sample was anodized in a 15wt% sulphuric acid for 2 h (Fig. 1b).
The chemical modification made the surface a specific ordered leaf-like structure (Fig. 2a).
In addition, by preventing wetting of occluded regions such as grooves, pits or holes in the surface, the establishment of a stable, corrosive chemistry is avoided and corrosion initiation is prevented.
Online since: May 2013
Authors: Aleksey N. Salanov, Svetlana V. Cherepanova, Olga B. Lapina, Vasiliy A. Bolotov, Yuriy Yu. Tanashev, Jean Baptiste d’Espinose de Lacaillerie, Vladislav A. Sadykov, Andrey S. Andreev, S. Tikhov
Probably, the surroundings have other chemistry.
This correspondence allows determining the location of regions with certain chemistry in the image of the material.
Discussion One can conclude that obtained Al2O3/CoAlO/CoAl cermet has complex solid structure.
According to all techniques used for characterization cermet structure seems following.
Russian Journal of Applied Chemistry, 1997. 70(1): p. 299
This correspondence allows determining the location of regions with certain chemistry in the image of the material.
Discussion One can conclude that obtained Al2O3/CoAlO/CoAl cermet has complex solid structure.
According to all techniques used for characterization cermet structure seems following.
Russian Journal of Applied Chemistry, 1997. 70(1): p. 299
Online since: September 2011
Authors: Yi Ping Yao, Fei Xing, Zhi Wen Jiang, Bing Wang
However, the NSM is inherently combined with the sequential semantics, and all sub-volumes share one common data structure for events or messages.
Thus, directly parallelization of the NSM may be confronted with the so-called boundary problem and high costs of synchronously accessing the common data structure [29].
Gardiner, Handbook of Stochastic Methods: for Physics, Chemistry and the Natural Sciences (Springer Series in Synergetics), 3rd ed.
Gillespie, "Exact stochastic simulation of coupled chemical reactions," Journal of Physical Chemistry, vol. 81, no. 25, pp. 2340-2361, December 1977
Gillespie, "Stochastic simulation of chemical kinetics," Annual Review of Physical Chemistry, vol. 58, no. 1, pp. 35-55, 2007
Thus, directly parallelization of the NSM may be confronted with the so-called boundary problem and high costs of synchronously accessing the common data structure [29].
Gardiner, Handbook of Stochastic Methods: for Physics, Chemistry and the Natural Sciences (Springer Series in Synergetics), 3rd ed.
Gillespie, "Exact stochastic simulation of coupled chemical reactions," Journal of Physical Chemistry, vol. 81, no. 25, pp. 2340-2361, December 1977
Gillespie, "Stochastic simulation of chemical kinetics," Annual Review of Physical Chemistry, vol. 58, no. 1, pp. 35-55, 2007
Online since: January 2026
Authors: Jassim Mohammed Salman, Alaa Jasim Mohammed, Ferdius Mohamat Yusuff
Removal of nickel (II) from wastewater using a zeolite-packed anaerobic bioreactor: Bacterial diversity and community structure shifts.
Sustainable Chemistry for the Environment
Journal of Chemistry, 2013(1), 489670
Journal of Industrial and Engineering Chemistry, 21, 1403-1409
Results in Chemistry, 3, 100249. https://doi.org/10.1016/j.rechem.2021.100249
Sustainable Chemistry for the Environment
Journal of Chemistry, 2013(1), 489670
Journal of Industrial and Engineering Chemistry, 21, 1403-1409
Results in Chemistry, 3, 100249. https://doi.org/10.1016/j.rechem.2021.100249
Online since: August 2021
Authors: Zuzana Slížková, Martin Keppert, Petra Mácová, Pavel Reiterman, Pavla Bauerová, Martina Havelcová, Andrii Mahun, Silvie Švarcová
Analytical Techniques for Detection of Oil Presence in Mortar
Pavla Bauerová1,2,a, Pavel Reiterman1,3,b*, Petra Mácová4,c, Zuzana Slížková4,d, Martina Havelcová5,e, Andrii Mahun6,7,f, Silvie Švarcová8,g
and Martin Keppert1,2,h
1University Centre for Energy Efficient Buildings, Czech Technical University in Prague, Třinecká 1024, 273 43 Buštěhrad, Czech Republic
2Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Praha 6, Czech Republic
3Experimental Centre, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Praha 6, Czech Republic
4Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, Prosecká 809/76, 190 00 Praha 9, Czech Republic
5Institute of Rock Structure and Mechanics of the Czech Academy of Sciences, V Holešovičkách 94/41, 182 09 Praha 8, Czech Republic
6Institute of Macromolecular Chemistry of the Czech Academy of Sciences
, Heyrovského nám. 2, 162 06, Praha 6, Czech Republic 7Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 40 Praha 2, Czech Republic 8Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež 1001, Czech Republic apavlabau@centrum.cz, bpavel.reiterman@fsv.cvut.cz, cmacova@itam.cas.cz, dslizkova@itam.cas.cz, ehavelcova@irsm.cas.cz, fmahun@imc.cas.cz, gsvarcova@iic.cas.cz, hmartin.keppert@fsv.cvut.cz *corresponding author Keywords: lime mortar; oil; solid state NMR; FTIR; gas chromatography; thermal analysis.
Question is what is going on with the polymerized structure during the extraction and methyl-esterification of the extract prior to GC/MS analysis, but the double bounds cannot be restored what results to much higher content of saturated acids compared to the linseed oil.
Epple, On the structure of amorphous calcium carbonates—a detailed study by solid-state NMR spectroscopy, Inorg.
Bezdička, Mixed lead carboxylates relevant to soap formation in oil and tempera paintings: the study of the crystal structure by complementary XRPD and ssNMR, Dalt.
, Heyrovského nám. 2, 162 06, Praha 6, Czech Republic 7Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 40 Praha 2, Czech Republic 8Institute of Inorganic Chemistry of the Czech Academy of Sciences, 250 68 Husinec-Řež 1001, Czech Republic apavlabau@centrum.cz, bpavel.reiterman@fsv.cvut.cz, cmacova@itam.cas.cz, dslizkova@itam.cas.cz, ehavelcova@irsm.cas.cz, fmahun@imc.cas.cz, gsvarcova@iic.cas.cz, hmartin.keppert@fsv.cvut.cz *corresponding author Keywords: lime mortar; oil; solid state NMR; FTIR; gas chromatography; thermal analysis.
Question is what is going on with the polymerized structure during the extraction and methyl-esterification of the extract prior to GC/MS analysis, but the double bounds cannot be restored what results to much higher content of saturated acids compared to the linseed oil.
Epple, On the structure of amorphous calcium carbonates—a detailed study by solid-state NMR spectroscopy, Inorg.
Bezdička, Mixed lead carboxylates relevant to soap formation in oil and tempera paintings: the study of the crystal structure by complementary XRPD and ssNMR, Dalt.