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Online since: January 2014
Authors: Gang Chen, Chuan Yang Su, Qing Zhang
In addition, they just discuss the trace elements in the prospect of water chemistry.
Based on the discussion of water chemistry, D/18O and 87Sr/86Sr, this paper has carried out the formation mechanism of the geothermal water in Guihu district.
The main area where Guihu geothermal resource appears lies to the north of Fuzhou-Yongtai structure.
The structure of NNW fault appears in Guihu district on a large scale, including F1—F3 fault.
The NEE structure belongs to compressor-shear fracture with intensive fissures, and consists of NEE negative terrain.
Based on the discussion of water chemistry, D/18O and 87Sr/86Sr, this paper has carried out the formation mechanism of the geothermal water in Guihu district.
The main area where Guihu geothermal resource appears lies to the north of Fuzhou-Yongtai structure.
The structure of NNW fault appears in Guihu district on a large scale, including F1—F3 fault.
The NEE structure belongs to compressor-shear fracture with intensive fissures, and consists of NEE negative terrain.
Online since: June 2010
Authors: Aik Chong Lua, Mark J. Heslop, Jia Guo, Guang Hu
Separation of Ethane Gas by Adsorption onto Various Biomass-derived
Activated Carbons
GUO Jia1,a, HU Guang1,b, LUA Aik Chong
2,c and Mark J HESLOP
3,d
1
School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of
Ministry of Education, Wuhan Institute of Technology, Wuhan 430073, China
2
School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore
639798, Republic of Singapore
3
Department of Chemical and Process Engineering, University of Strathclyde, Glasgow G1 1XJ,
Scotland, UK
a
guojia@mail.wit.edu.cn,
b
huguang2009@tom.com,
cmaclua@ntu.edu.sg, dmark.heslop@strath.ac.uk
Keywords: Activated carbon; Biomass; Ethane adsorption; Chemisorption; Surface chemistry.
Surface chemistries of the activated carbons were characterized by Fourier transform infrared spectroscopy and Boehm titration.
The surface structure of the H2SO4-impregnated palm-shell activated carbons is given below.
For the activated carbon prepared by CO2 thermal activation, the band at 2439 cm-1 is attributed to C−H stretching vibrations in aliphatic structures, in addition to phenols and the aromatic rings.
In this case, the surface structure of the thermally activated carbon is given below: H O R H R O O C O O O O HO C O HO C C O O O This agreed with the results of Boehm titration as shown in Table 2.
Surface chemistries of the activated carbons were characterized by Fourier transform infrared spectroscopy and Boehm titration.
The surface structure of the H2SO4-impregnated palm-shell activated carbons is given below.
For the activated carbon prepared by CO2 thermal activation, the band at 2439 cm-1 is attributed to C−H stretching vibrations in aliphatic structures, in addition to phenols and the aromatic rings.
In this case, the surface structure of the thermally activated carbon is given below: H O R H R O O C O O O O HO C O HO C C O O O This agreed with the results of Boehm titration as shown in Table 2.
Online since: April 2008
Authors: Elena Kashchieva, Nikolai Dulguerov, Anna Staneva, Yanko B. Dimitriev
By TEM analysis, different type microheterogeneous
structures have been observed in compositions rich in B2O3.
Cheishvili, Physics and Chemistry of Glasses Vol. 28 (2002), p. 265 (in Russian)
Saruhanishvili, Physics and Chemistry of Glasses Vol. 5 (1979), p. 530 (in Russian)
Chubinidze, Physics and Chemistry of Glasses Vol. 3 (1977), p. 274 (in Russian)
Cheishvili, Physics and Chemistry of Glasses Vol. 10 (1984), p. 189 (in Russian)
Cheishvili, Physics and Chemistry of Glasses Vol. 28 (2002), p. 265 (in Russian)
Saruhanishvili, Physics and Chemistry of Glasses Vol. 5 (1979), p. 530 (in Russian)
Chubinidze, Physics and Chemistry of Glasses Vol. 3 (1977), p. 274 (in Russian)
Cheishvili, Physics and Chemistry of Glasses Vol. 10 (1984), p. 189 (in Russian)
Online since: June 2013
Authors: Kun Yuan, Hui Xue Li, Huian Tang, Yuan Cheng Zhu
Introduction
In 1987, Nobel chemistry prize was reward to an American scholar who works on the big-ring polyester chemistry.
And latterly, the related research about big-ring polyester chemistry was developed into the subject of super-molecular chemistry.
The obtained geometry structures were given in Fig. 1.
The structure A is stretch configuration in space, and the stretch directions of the two N-H bonds in their structures are close to the two C-Br bonds.
So, the above four groups formed a four-gears-tweezers structures.
And latterly, the related research about big-ring polyester chemistry was developed into the subject of super-molecular chemistry.
The obtained geometry structures were given in Fig. 1.
The structure A is stretch configuration in space, and the stretch directions of the two N-H bonds in their structures are close to the two C-Br bonds.
So, the above four groups formed a four-gears-tweezers structures.
Online since: November 2013
Authors: Besim Ben-Nissan
Biomimetics and Marine Materials in Drug Delivery and Tissue Engineering: from natural role models to bone regeneration
Besim Ben-Nissan,
University of Technology Sydney,
Faculty of Science, School of Chemistry and Forensic Science
PO BOX 123, Broadway2007, NSW, Australia
b.ben-nissan@uts.edu.au
Keywords: Biomimicry, marine structures, drug delivery, tissue repair, nanotechnology, hydroxyapatite nanoplatelets.
Functional natural structures optimized to their environment are produced by self-assembly.
One significant worked example of biomimetic materials chemistry applied to the tissue engineering of bone (and drug/gene delivery) uses template-mediated mineralization chemistry within a complex organized 3D reaction field to produce microscopic sponges with morphology and patterning that mimic plankton shells.
Since the chemistry occurs at room temperature and consists of an aqueous phase biological molecules can be safely incorporated during synthesis.
A unique transformation from disordered amorphous structure to ordered crystalline structure.
Functional natural structures optimized to their environment are produced by self-assembly.
One significant worked example of biomimetic materials chemistry applied to the tissue engineering of bone (and drug/gene delivery) uses template-mediated mineralization chemistry within a complex organized 3D reaction field to produce microscopic sponges with morphology and patterning that mimic plankton shells.
Since the chemistry occurs at room temperature and consists of an aqueous phase biological molecules can be safely incorporated during synthesis.
A unique transformation from disordered amorphous structure to ordered crystalline structure.
Online since: August 2012
Authors: Toshihiro Tanaka, Masanori Suzuki
This scientific field has been referred to as "Slag Chemistry".
Figure 2 Concept of "Hydrothermal Slag Chemistry".
However, in the above discussion we assume that materials have infinite size and uniform structure.
If "surface" or "interfaces" can be imported in the structure of the materials, we can create additional valuable functions in the materials.
On the other hand, the sample after H2O releasing has a porous structure as shown in Fig.6 (b).
Figure 2 Concept of "Hydrothermal Slag Chemistry".
However, in the above discussion we assume that materials have infinite size and uniform structure.
If "surface" or "interfaces" can be imported in the structure of the materials, we can create additional valuable functions in the materials.
On the other hand, the sample after H2O releasing has a porous structure as shown in Fig.6 (b).
Online since: November 2011
Edited by: Yan Xuan Wen, Fu Hou Lei
The work is divided into the chapters: Chemical Engineering Measurement and Instrumentation, Transport Processes of Chemical Engineering, Chemical Separation Engineering, Industrial Catalysis, Chemical Systems Engineering, Inorganic and Organic Chemical Engineering, Biochemical Industry, Electrochemical Engineering, Green Chemical Processing Technology and Chemistry Science and Applied Chemistry.
Online since: June 2012
Authors: Yu Lan Song, Kai Cheng, Xiu Ling Zhang
Synthesis, Structure and Photoluminescence of A potential Luminescent Material of Mn(II) Coordination Polymer
Xiuling Zhang1, a, Kai Cheng2,b and Yulan Song 1,c
1 Key Laboratory of Coordination Chemistry and Functional Materials in Universities of
Shandong, Dezhou University, Shandong, Dezhou, 253023, China
2 School of Chemistry and Pharmaceutical Engineering, Shandong Polytechnic University, Shandong, Jinan, 250353, China
axlzhang99@126.com, bkai861218@163.com, cyulan_song@yahoo.com.cn
Keywords: Synthesis, Coordination Polymer, Crystal Structure, Luminescent Property.
Herein, we report on the synthesis, crystal structure and photoluminescence property of the Mn (II) complex.
In the crystal structure, there are two crystallographically unique Mn atoms.
Fig. 2 The 1D chain structure compound 1.
Spagna, SIR97: a new tool for crystal structure determination and refinement, J.
Herein, we report on the synthesis, crystal structure and photoluminescence property of the Mn (II) complex.
In the crystal structure, there are two crystallographically unique Mn atoms.
Fig. 2 The 1D chain structure compound 1.
Spagna, SIR97: a new tool for crystal structure determination and refinement, J.
Online since: October 2010
Authors: Jie Bing Zhang, Xiao Li Zhang, An Ning Zhou
The Coal Oxidized by HNO3 on The Conductivity Effect of Coal-based Polyaniline
Jiebing Zhang 1,a, Anning Zhou 2,b, Xiaoli Zhang3,c
1College of Chemical Engineering, Northwest University, Xi’an710069, China
2College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an710054, China
3College of Chemical Engineering, Northwest University, Xi’an710069, China
adelierson@163.com,bzhouanning2004@yahoo.com.cn,cxlzhang@nwu.edu.cn
Keywords: coal structure,coal-based polyaniline,conductivity
Abstract.The interation between aniline and shenfu-coal(SFC) was studied by the changes about acidic functional groups and the absence of coal macromolecules.
The macromolecular structure of the SFC play an important role,the macromolecular acid in coal only play the weak doping role.
As a result, the macromolecular acid doping for coal-based polyaniline can be the focus for study [5,6,7].The acid content and macromolecular structure in coal are very important effects for the conductivity of the coal-based polyaniline.Therefore,it is very important theoretical and practical significance to study how to control the acid content and macromolecular structure in coal.
Experimental materials Shenfu coal(SFC) was supplied by the lab at the college of Chemistry and Chemical Engineering in XUST(china).
[10] K.C.Xie:The Structure and Reactivity of Coal(Science Publications,china2002) In Chinese
The macromolecular structure of the SFC play an important role,the macromolecular acid in coal only play the weak doping role.
As a result, the macromolecular acid doping for coal-based polyaniline can be the focus for study [5,6,7].The acid content and macromolecular structure in coal are very important effects for the conductivity of the coal-based polyaniline.Therefore,it is very important theoretical and practical significance to study how to control the acid content and macromolecular structure in coal.
Experimental materials Shenfu coal(SFC) was supplied by the lab at the college of Chemistry and Chemical Engineering in XUST(china).
[10] K.C.Xie:The Structure and Reactivity of Coal(Science Publications,china2002) In Chinese
Online since: August 2013
Authors: Yu Liu, Jia Chuan Chen, Jia Chuan Chen, Lucian Lucia
The Evaluation of Lignin Structure Changes of both pH4 and pH2 from Hardwood Dissolved Soda-AQ Lignin by 31P-NMR
Lupeng Shao1, a, Yu Liu 1,2,b, Jiachuan Chen1, Lucian Lucia2
1Key Laboratory of pulp and Paper Science&Technology of Ministry of Education, Shandong Polytechnic University, Jinan, Shandong 250353, P.
NMR is one of the important ways to investigate the lignin chemistry.The 1H-NMR technique was first used to analyze the lignin by J.L.McCarthy[4](American) in the 1960s.H.Nimz[5]used 13C-NMR to study lignin structure successfully in the 1970s.Now NMR technology has been a indispensable research tool studying lignin study.31P-NMR has been widely used to quantitatively determine hydroxyl groups in lignin[6].
In this paper,lignin dissolved from Soda-AQ cooking black liquor is analyzed, the condensed phenolic OH,syringyl OH and carboxyl are existed in lignin with 31P-NMR.The structure change of dissolved lignin from different pH values appears through the contents of functional groups[7].
Lignin structure changes can be analyzed quantitatively according to the the 31P-NMR spectra.
Wood and Cellulosic Chemistry[M].New York: Marcel Dekker,2001
NMR is one of the important ways to investigate the lignin chemistry.The 1H-NMR technique was first used to analyze the lignin by J.L.McCarthy[4](American) in the 1960s.H.Nimz[5]used 13C-NMR to study lignin structure successfully in the 1970s.Now NMR technology has been a indispensable research tool studying lignin study.31P-NMR has been widely used to quantitatively determine hydroxyl groups in lignin[6].
In this paper,lignin dissolved from Soda-AQ cooking black liquor is analyzed, the condensed phenolic OH,syringyl OH and carboxyl are existed in lignin with 31P-NMR.The structure change of dissolved lignin from different pH values appears through the contents of functional groups[7].
Lignin structure changes can be analyzed quantitatively according to the the 31P-NMR spectra.
Wood and Cellulosic Chemistry[M].New York: Marcel Dekker,2001