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Online since: May 2012
Authors: Wen Long Cui, Wen An Deng, Rong Zhuo, Dong Liu, Chuan Li, Guo He Que
It is necessary to provide a comprehensive understanding on distribution, structure and reactivity of sulfur in residue for effective removal.
Acknowledgements This work was financially supported by the Young Science Fund Projects in Natural Science Foundation of China (21106186), Innovation Team from Ministry of Education (Efficient Conversion Green Chemistry and Engineering of Heavy Oil).
Ed., Vol. 45 (2006), p. 3299 [4] Suoqi Zhao: Acta Petrolei Sinica (Petroleum Processing Section) In Chinese, Vol. 18 (2002), p. 18 [5] Xianglin Hou: China refining technology (China Petrochemical Press, China1991) [6] Zongxian Wang, Guohe Que and Wenjie Liang: Acta Petrolei Sinica (Petroleum Processing Section) In Chinese, Vol. 13 (1997), p. 23 [7] Zongxian Wang, Guohe Que and Wenjie Liang: Acta Petrolei Sinica (Petroleum Processing Section) In Chinese, Vol. 15 (1999), p. 17 [8] Huicheng Zhang, Yongjie Yan, Wanfu Sun and Yongchuan Dai: Journal of Fuel Chemistry and Technology In Chinese, Vol. 35 (2007), p. 628 [9] Zhichang Liu, Peng Li, Chunming Xu and Jinsen Gao: Journal of Fuel Chemistry and Technology In Chinese, Vol. 32 (2004), p. 185 [10] H.
Mochida: Fuel, Vol. 86 (2007), p. 2898 [11] Wenjie Liang: Petrochemistry (University of Petroleum Press, China1995) [12] Wen-jie Liang: Heavy oil chemistry (University of Petroleum Press, China2000) [13] Wenan Deng, Ping Wen, Dong Liu and Guohe Que: Petroleum Processing and Petrochemicals In Chinese, Vol. 38 (2007), p. 6 [14] T.
Acknowledgements This work was financially supported by the Young Science Fund Projects in Natural Science Foundation of China (21106186), Innovation Team from Ministry of Education (Efficient Conversion Green Chemistry and Engineering of Heavy Oil).
Ed., Vol. 45 (2006), p. 3299 [4] Suoqi Zhao: Acta Petrolei Sinica (Petroleum Processing Section) In Chinese, Vol. 18 (2002), p. 18 [5] Xianglin Hou: China refining technology (China Petrochemical Press, China1991) [6] Zongxian Wang, Guohe Que and Wenjie Liang: Acta Petrolei Sinica (Petroleum Processing Section) In Chinese, Vol. 13 (1997), p. 23 [7] Zongxian Wang, Guohe Que and Wenjie Liang: Acta Petrolei Sinica (Petroleum Processing Section) In Chinese, Vol. 15 (1999), p. 17 [8] Huicheng Zhang, Yongjie Yan, Wanfu Sun and Yongchuan Dai: Journal of Fuel Chemistry and Technology In Chinese, Vol. 35 (2007), p. 628 [9] Zhichang Liu, Peng Li, Chunming Xu and Jinsen Gao: Journal of Fuel Chemistry and Technology In Chinese, Vol. 32 (2004), p. 185 [10] H.
Mochida: Fuel, Vol. 86 (2007), p. 2898 [11] Wenjie Liang: Petrochemistry (University of Petroleum Press, China1995) [12] Wen-jie Liang: Heavy oil chemistry (University of Petroleum Press, China2000) [13] Wenan Deng, Ping Wen, Dong Liu and Guohe Que: Petroleum Processing and Petrochemicals In Chinese, Vol. 38 (2007), p. 6 [14] T.
Online since: December 2014
Authors: Yan Xu
China
a xuyan@sqc.edu.cn
Keywords: Manganese, Crystal Structure, Schiff bases, Phosphinate
Abstract.
The structure was solved by direct methods and refined by full matrix least-squares techniques based on F2.
Results and discussion Crystal structure.
The structure of complex 1 is shown in Fig.1.
Vigato Inorganic Chemistry Communications Vol. 15 (2012) , p. 84 [4] H.
The structure was solved by direct methods and refined by full matrix least-squares techniques based on F2.
Results and discussion Crystal structure.
The structure of complex 1 is shown in Fig.1.
Vigato Inorganic Chemistry Communications Vol. 15 (2012) , p. 84 [4] H.
Online since: January 2025
Authors: Alifiananda Rahmatul Dafa Kesuma, Abbilah Ero Mahdhani, Khoirun Nisa Ashar, Vicky Ahava Ferdinansyah, Venty Suryanti
NaOH enters the lignocellulose structure, breaks the bonds in the basic structure of lignin, and binds with lignin to form sodium phenolate (C6H5NaO).
Delignification using NaOH causes the OH bonds of the alkaline solution to break the lignin-cellulose bonds by entering the lignocellulose structure and breaking the bonds from the basic lignin structure.
Glucose has many hydroxyl groups, so the -OH group identified is the OH group attached to the carbon and oxygen atoms in the glucose structure.
Enzymatic Hydrolysis of Cellulose from Sago Dregs Using a Mixture of Cellulase from Trichoderma reesei and Aspergillus niger, Journal of Equatorial Chemistry. 2 (2013)
Aritonang, A.B, Production and Characterization of Bagasse Biochar (Saccharum officinarum Linn), Indonesian Journal of Pure and Applied Chemistry. 4 (2021) 91-101 [28] Galiwango, E.
Delignification using NaOH causes the OH bonds of the alkaline solution to break the lignin-cellulose bonds by entering the lignocellulose structure and breaking the bonds from the basic lignin structure.
Glucose has many hydroxyl groups, so the -OH group identified is the OH group attached to the carbon and oxygen atoms in the glucose structure.
Enzymatic Hydrolysis of Cellulose from Sago Dregs Using a Mixture of Cellulase from Trichoderma reesei and Aspergillus niger, Journal of Equatorial Chemistry. 2 (2013)
Aritonang, A.B, Production and Characterization of Bagasse Biochar (Saccharum officinarum Linn), Indonesian Journal of Pure and Applied Chemistry. 4 (2021) 91-101 [28] Galiwango, E.
Online since: February 2011
Authors: Qiang Qiang Liao, Yi Jiu Li, Bo Xiang
Synthesis and Characterization of an Aminated D-glucose and Its Stability of Cu2+ Complex
Qiangqiang Liao 1, a, Yijiu Li 2, b and Bo Xiang 2, c
1 Key lab of Shanghai Colleges and Universities for Electric Power Corrosion Control and Applied Electrochemistry, Shanghai University of Electric Power, Shanghai 200090, China
2 Department of Chemistry, Tongji University, Shanghai 200092, China
aliaoqq1971@yahoo.com.cn, blyjtjc@sina.com, cbxiangbo@mail.tongji.edu.cn
Keywords: D-glucose; Ethylenediamine; Complex; Copper Ion.
Their research suggests that the stereochemical structure of the sugar complexes can be changed by using different metal ions.
Fig. 1 FT-IR spectra of D-glucose (1) and aminated glucose(2) Fig. 2 ESI-MS spectrum of aminated glucose in aqueous solution Fig.3 Structure of aminated glucose Elemental analysis.
Combined with the results of elemental analysis and ESI-MS spectrum, the aminated glucose has a symmetrical structure shown in Fig.3.
Tabassum: Chemistry & Biodiversity, Vol.3(2006), p. 312 [11] J.
Their research suggests that the stereochemical structure of the sugar complexes can be changed by using different metal ions.
Fig. 1 FT-IR spectra of D-glucose (1) and aminated glucose(2) Fig. 2 ESI-MS spectrum of aminated glucose in aqueous solution Fig.3 Structure of aminated glucose Elemental analysis.
Combined with the results of elemental analysis and ESI-MS spectrum, the aminated glucose has a symmetrical structure shown in Fig.3.
Tabassum: Chemistry & Biodiversity, Vol.3(2006), p. 312 [11] J.
Online since: February 2014
Authors: Joong Kee Lee, Hans Kristianto, Martin Halim, Ignatius Suharto, Arenst Andreas Arie
Roughly, it can be seen that the increasing chemical ratio lead to the development of porous structure of carbon samples..
At low impregnation ratio, ZnCl2 causes a weak tar inhibition properties such that it can affect the formation of microporous structures of activated carbons [5].
At higher impregnation ratio, the presence of ZnCl can form somekind of micropores widening hence a dominant mesopores structure will be established on the surface of carbon samples.
Activated carbon obtained from this work shows lower capacitance than those reported in the literatures in which surface chemistry of activated carbons is subject to modifications.
Lee, High rate capability of Cu-coated activated carbon electrodes for Li-ion capacitors using non-aqueous electrolytes, Materials Chemistry and Physics 133 (2012) 38- 41
At low impregnation ratio, ZnCl2 causes a weak tar inhibition properties such that it can affect the formation of microporous structures of activated carbons [5].
At higher impregnation ratio, the presence of ZnCl can form somekind of micropores widening hence a dominant mesopores structure will be established on the surface of carbon samples.
Activated carbon obtained from this work shows lower capacitance than those reported in the literatures in which surface chemistry of activated carbons is subject to modifications.
Lee, High rate capability of Cu-coated activated carbon electrodes for Li-ion capacitors using non-aqueous electrolytes, Materials Chemistry and Physics 133 (2012) 38- 41
Online since: March 2014
Authors: Hong Shi
Improvement of Polymers by UV Irradiation: The Research in Ageing and Solidification – Take Polysiloxane-Modified-Polyacrylates and Asphalt as AnExample
Hong Shi
School of Chemistry and Environmental Engineering,Jianghan University,
Hubei Wuhan 430056,China
Keywords:asphalt, polysiloxane-modified-polyacrylate, UV, radical.
Also, crude oils have different chemistries, therefore; some asphalt has better properties than others.
Due to its unique structure, it has many qualities that other materials cannot access.
Currently, many methods have been established to evaluate the effects of UV ageing onto the properties of asphalt, structure and components, including Dynamic Shear Rheometer, Corbett method, and Fourier transform infrared.
To improve the photo-solidification rate, and perfect the properties after photo-solidification, different photosensitive monomers with different structures and functional groups were added.
Also, crude oils have different chemistries, therefore; some asphalt has better properties than others.
Due to its unique structure, it has many qualities that other materials cannot access.
Currently, many methods have been established to evaluate the effects of UV ageing onto the properties of asphalt, structure and components, including Dynamic Shear Rheometer, Corbett method, and Fourier transform infrared.
To improve the photo-solidification rate, and perfect the properties after photo-solidification, different photosensitive monomers with different structures and functional groups were added.
Online since: November 2017
Authors: Osamu Suzuki, Takahisa Anada
Also, OCP implanted was found to progressively be converted to apatite structure in vivo [3].
The hydrolysis rate was determined by analyzing the chemical composition and the crystal structure of the OCP using chemical and physical techniques, such as transmission electron microscopy and selected area electron diffraction.
The crystalline phase of OCP cannot be maintained after the sintering due to the thermal decomposing because OCP contains a large number of water molecules in the structure [4].
Further study is under way to elucidate the mechanism to induce the oriented bone formation in relation to the crystal chemistry of OCP.
Suzuki, Octacalcium phosphate: osteoconductivity and crystal chemistry.
The hydrolysis rate was determined by analyzing the chemical composition and the crystal structure of the OCP using chemical and physical techniques, such as transmission electron microscopy and selected area electron diffraction.
The crystalline phase of OCP cannot be maintained after the sintering due to the thermal decomposing because OCP contains a large number of water molecules in the structure [4].
Further study is under way to elucidate the mechanism to induce the oriented bone formation in relation to the crystal chemistry of OCP.
Suzuki, Octacalcium phosphate: osteoconductivity and crystal chemistry.
Online since: May 2013
Authors: Byeong Woo Lee, Jin Heui Koo, Tae Suk Lee, Yun Hae Kim, Jae Suk Hwang
Although Zn2+ aqueous chemistry has been examined by a number of workers [6,7], there remain questions about the Zn-complexes behavior at different concentration, temperature and pH values.
The low Zn-precursor concentration and lower reaction pH (0.07 M, pH 7) shown in Region I lead to the the finest plate-like structures resulting from the insufficient driving force for crystal growth.
All the microstructures are related with hexagonal symmetry of the ZnO wurtzite structure.
The SEM morphologies of the samples obtained in the aqueous routes showed that nano-structured ZnO morphologies of plate (flake)-like, tapered (pointed) multipods or rods could be obtained and the shapes would be efficiently controllable by changing preparation parameters.
Stumm and W, Morgan J: Aquatic chemistry (Wiley-Interscience, New-York, 1995), p 1002 [8] H.
The low Zn-precursor concentration and lower reaction pH (0.07 M, pH 7) shown in Region I lead to the the finest plate-like structures resulting from the insufficient driving force for crystal growth.
All the microstructures are related with hexagonal symmetry of the ZnO wurtzite structure.
The SEM morphologies of the samples obtained in the aqueous routes showed that nano-structured ZnO morphologies of plate (flake)-like, tapered (pointed) multipods or rods could be obtained and the shapes would be efficiently controllable by changing preparation parameters.
Stumm and W, Morgan J: Aquatic chemistry (Wiley-Interscience, New-York, 1995), p 1002 [8] H.
Online since: October 2009
Authors: Xiao Ling Liao, Wen Feng Xu
Therefore, there are many methods had been studied to improve the
performance of polylactic acid with chemistry and physics's ideas.
The microstructure of this scaffold was looked as the best structure with weight fractions of ice microparticulates of 80 %, as showing in Fig.1.
Gao J [2] had produced porous polylactic acid scaffolds with the combined method of thermally induced phase separation and freeze-drying technic, as showing in Fig.2, it is clear that the structure of porous was very regular and look like terrace.
The effects of processing parameters, such as saturation pressure, saturation time and temperature on the porosity and pore structure of the scaffold were also studied in detail.
Zhang Run [5] were developed with supercritical carbon dioxide fluid technic (SC-CO2), compared with the solvent casting-salt leaching technic, the SC-CO2 technic without using organic solvent can be used to prepare porous PLA scaffold materials with excellent tri-dimensional porous structure and high porosity.
The microstructure of this scaffold was looked as the best structure with weight fractions of ice microparticulates of 80 %, as showing in Fig.1.
Gao J [2] had produced porous polylactic acid scaffolds with the combined method of thermally induced phase separation and freeze-drying technic, as showing in Fig.2, it is clear that the structure of porous was very regular and look like terrace.
The effects of processing parameters, such as saturation pressure, saturation time and temperature on the porosity and pore structure of the scaffold were also studied in detail.
Zhang Run [5] were developed with supercritical carbon dioxide fluid technic (SC-CO2), compared with the solvent casting-salt leaching technic, the SC-CO2 technic without using organic solvent can be used to prepare porous PLA scaffold materials with excellent tri-dimensional porous structure and high porosity.
Application of Poly2-Methyl Acrylate-N-Methyl Pyridinium Iodide in Salt-Free Dyeing of Reactive Dyes
Online since: September 2013
Authors: Shu Hang Zhang, Hong Wei Li, Le Lv
The method of modifying traditional reactive dyes is to synthesize new reactive dyes with positive electrons or multi-radicals in the structure of low salt reactive dyes [2].
In fact, this method is not feasible because that processes of modifying the structure of each series of reactive dyes are too complicated.
Fig. 1 Polymer Structure of poly2-methyl acrylate-N-methyl pyridinium iodide (PMAMPI) Process flow.
Green Chemistry,2005,7:609-616
Dyeing cationic cotton with fiber reactive dyes: Effect of reactive chemistries [J].
In fact, this method is not feasible because that processes of modifying the structure of each series of reactive dyes are too complicated.
Fig. 1 Polymer Structure of poly2-methyl acrylate-N-methyl pyridinium iodide (PMAMPI) Process flow.
Green Chemistry,2005,7:609-616
Dyeing cationic cotton with fiber reactive dyes: Effect of reactive chemistries [J].