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Online since: September 2013
Authors: Wei Li, Na Liu, Rong Jun Du
Hydrogenation CO2 to formic acid over Ru supported on γ-Al2O3 nanorods
Na Liu1, a, Rongjun Du2, b, Wei Li1, c
1Colleges of chemistry and chemical engineering, Xi’an University of science and technology, 58 Yanta Road Xi’an, China, 710054,
2Colleges of geology and environment, Xi’an University of science and technology, 58 Yanta Road Xi’an, China, 710054,
aliuna307@126.com, bdurongjun2003@163.com, c1058582849@qq.com
Keywords: γ-Al2O3 nanorods, Supported ruthenium catalyst, Hydrogenation of CO2, Formic acid
Abstract.
These supports possess primarily nanorods structures with diameters of 20-30 nm and lengths of 100 nm.
Lv, CO2 Chemistry-actuality and expectation, Progress in chemistry 22 (2010) 1102-1115 [3] W.
Leitner, Complexes [(P2)Rh(hfacac)](P2= bidentate chelating phosphane, hfacac = hexafluoroacetylacetonate) as catalysts for CO2 hydrogenation: correlations between solid state structures, 103Rh NMR shifts and catalytic activities, Chem.
These supports possess primarily nanorods structures with diameters of 20-30 nm and lengths of 100 nm.
Lv, CO2 Chemistry-actuality and expectation, Progress in chemistry 22 (2010) 1102-1115 [3] W.
Leitner, Complexes [(P2)Rh(hfacac)](P2= bidentate chelating phosphane, hfacac = hexafluoroacetylacetonate) as catalysts for CO2 hydrogenation: correlations between solid state structures, 103Rh NMR shifts and catalytic activities, Chem.
Online since: January 2013
Authors: Qian Hua Zhu, Qiong Yang, Wei He, Shang Zhou, Xiao Yan Li, Ji Dong Yang, Xiao Hui Zhao
Discrimination and Simultaneous Determination of 6-BA and KT by Polarized Synchronous Light Scattering and Synchronous Light Scattering Spectrum
Xiaohui Zhao1, a, Qianhua Zhu1, Qiong Yang1, Wei He1,
Shang Zhou1, Xiaoyan Li 1 and Jidong Yang2, b
1 College of Chemistry and Chemical Engineering, Yangtze Normal University,
Chongqing, 408000, China
2Chong Qing Three Gorges University, Chongqing, 404000, China
aqiaohe626@163.com, b flyjd6400@sina.com
Keywords: Polarized synchronous light scattering, Synchronous light scattering, 6-benzylaminourine (6-BA), Kinetin (KT), Simultaneous determination
Abstract.
The structure of 6-BA and KT is very similar, all belong to the derivatives of adenine, using general chemical or physical methods are hard to carry on their separation, so their quantitative determination is very difficult.
Result showed that two natural cytokinins had different effects on the polarized light response signals at different angles because of their structure differences.
Yang: Chemistry Bulletin, Vol. 71(2008) No.7, p. 539(In Chinese)
Yang: Chinese Journal of Applied Chemistry, Vol. 29(2012) No.4, p.446 (In Chinese).
The structure of 6-BA and KT is very similar, all belong to the derivatives of adenine, using general chemical or physical methods are hard to carry on their separation, so their quantitative determination is very difficult.
Result showed that two natural cytokinins had different effects on the polarized light response signals at different angles because of their structure differences.
Yang: Chemistry Bulletin, Vol. 71(2008) No.7, p. 539(In Chinese)
Yang: Chinese Journal of Applied Chemistry, Vol. 29(2012) No.4, p.446 (In Chinese).
Online since: August 2013
Authors: Yu Jiao Wu, Chang Gui Liu, Chun Ping Yang, Hai Lin Liu, Ri Liang Meng
No matter which process, organic clay nano-distributions and nano-structures are important for flame retardation of composites[7].
It is barrier properties of nano-dispersion and intercalation structure leads to flame retardation improvement.
In addition, APP/PA6/OMMT constitutes a expanding intumescent flame retardant system, OMMT reacts with APP and comes out as aluminum phosphate and class ceramic structures, these structures can enhance the protection of expansion carbon layer.
Shang: Theories and Practices on Polymer/layered Silicate Nanocomposites (Chemistry Industry Press, China 2002), pp.1-5 [2] Y.
Jia: Flame Retardant nano-materials (Chemistry Industry Press, China, 2005)
It is barrier properties of nano-dispersion and intercalation structure leads to flame retardation improvement.
In addition, APP/PA6/OMMT constitutes a expanding intumescent flame retardant system, OMMT reacts with APP and comes out as aluminum phosphate and class ceramic structures, these structures can enhance the protection of expansion carbon layer.
Shang: Theories and Practices on Polymer/layered Silicate Nanocomposites (Chemistry Industry Press, China 2002), pp.1-5 [2] Y.
Jia: Flame Retardant nano-materials (Chemistry Industry Press, China, 2005)
Online since: February 2008
Authors: Ling Ke Zeng, Hui Wang
Preparation and Structure Characterization of Mullite Fiber Porous
Ceramic
Hui Wanga and Lingke Zeng
College of Materials science and Engineering, South China University of Technology, Guangzhou
510640, China
a
wanghui@scut.edu.cn
Keywords: Mullite fiber porous ceramic, Forced liquid displacement forming
Abstract.
A much simplier way is to achieve the porous structure through a conventional powder-processing route with the incorporation of some pore-forming agents such as sawdust, starch, graphite and organic particulates [7].
Ohji: Materials Chemistry and Physics.
A much simplier way is to achieve the porous structure through a conventional powder-processing route with the incorporation of some pore-forming agents such as sawdust, starch, graphite and organic particulates [7].
Ohji: Materials Chemistry and Physics.
Online since: February 2011
Authors: Chao Dong Liu, Guo Fei Gong, Sui Lian Luo
Dihydroxypropyl-terminated Polysiloxane Modified UV Cure Water-borne Polyurethane
Sui-lian Luo1, a, Chao-dong Liu1, b, and Guo-fei Gong1, c
1School of Chemistry and Environment, South China Normal University, Guangzhou, China
aluosuilian@163.com, bliuchaodong@163.com, cggf@163.com
Keywords: Water Borne, Polyurethane, UV Cure, PDMS
Abstract:In this paper three kind of water borne polyurethane are synthesized.
FTIR identify the structure of 2-hydroxypropyl acrylate terminated water borne polyurethane with block PDMS.
But the water-resistant is worse than solvent-based PU coatings’, because we introduced some hydrophilic groups such as -COOH,-OH to the molecular structure.
Results and Discussion As a first step, let us consider the structure of Si-WPUA, which was examined using FTIR spectroscopy and the structures of WPU and Si-WPU are showed in previous paper [4].In order to remove unreacted reactants, the sample is extracted 24 h by toluene.
The structure of the Si-WPUA was confirmed by FTIR spectroscopy is shown in Fig. 1.
FTIR identify the structure of 2-hydroxypropyl acrylate terminated water borne polyurethane with block PDMS.
But the water-resistant is worse than solvent-based PU coatings’, because we introduced some hydrophilic groups such as -COOH,-OH to the molecular structure.
Results and Discussion As a first step, let us consider the structure of Si-WPUA, which was examined using FTIR spectroscopy and the structures of WPU and Si-WPU are showed in previous paper [4].In order to remove unreacted reactants, the sample is extracted 24 h by toluene.
The structure of the Si-WPUA was confirmed by FTIR spectroscopy is shown in Fig. 1.
Online since: August 2008
Authors: Chris R. Bowen, Angkhana Jaroenworaluck, R. Stevens, D. Regonini
The pores are driven to into
alignment by the applied potential and link up to form the tubular structures.
TiO2 is commonly found in two forms anatase and rutile with a much less common intermediate structure, brookite.
TiO2 crystal structures: rutile (a), anatase (b) and brookite (c), showing the arrangement of the TiO62 octahedral in space.
The chemistry of the processes involved has been summarized in an excellent review by Grimes and his team who have made major contributions to understanding the phenomena [3].
The structure is thought to arise either by the dehyroxylation of the gel or by gas formation at the metal oxide interface.
TiO2 is commonly found in two forms anatase and rutile with a much less common intermediate structure, brookite.
TiO2 crystal structures: rutile (a), anatase (b) and brookite (c), showing the arrangement of the TiO62 octahedral in space.
The chemistry of the processes involved has been summarized in an excellent review by Grimes and his team who have made major contributions to understanding the phenomena [3].
The structure is thought to arise either by the dehyroxylation of the gel or by gas formation at the metal oxide interface.
Online since: December 2010
Authors: Hong Zhen Xie, Xing Li
Many interesting structures have been prepared, such as amorphous CC [12], helical CC [13], regular surface-relief structures [14], spheres structure [15], flowerlike agglomerates [16, 17] etc.
Results and Discussion Morphologies and Structures.
The CC assembly sphere chains had uniform structure.
Meldrum, Calcium carbonate in biomineralisation and biomimetic chemistry, Int.
Mann, The chemistry of form, Angew.
Results and Discussion Morphologies and Structures.
The CC assembly sphere chains had uniform structure.
Meldrum, Calcium carbonate in biomineralisation and biomimetic chemistry, Int.
Mann, The chemistry of form, Angew.
Online since: September 2011
Authors: Xin Hou Wang, Wan Li Han
To produce meltblown nonwoven fabrics with a uniform microfiber structure, the coat-hanger die must be well designed to distribute the polymer melt uniformly across its width.
Acknowledgments The authors are most grateful for the financial support provided by the Natural Science Foundation of China (50976091) References [1] V T Marla, R L Shambaugh: Industrial & Engineering Chemistry Research Vol. 42(2003), p. 6993
[3] B D Tate, R L Shambaugh: Industrial & Engineering Chemistry Research Vol. 43(2004), p. 5405
Acknowledgments The authors are most grateful for the financial support provided by the Natural Science Foundation of China (50976091) References [1] V T Marla, R L Shambaugh: Industrial & Engineering Chemistry Research Vol. 42(2003), p. 6993
[3] B D Tate, R L Shambaugh: Industrial & Engineering Chemistry Research Vol. 43(2004), p. 5405
Online since: October 2010
Authors: Bao Guo Ma, Jun Xiao, Hong Bo Tan
However, the most critical substituent is Na+, since it induces changes in the crystal structure as detailed in Table 3.The cubic C3A can be easily sintered without any need for stabilization.
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)
Jónsson, in: Theoretical Methods in Condencsed Phase Chemistry, edited by S.D.
Schwartz, volume 5 of Progress in Theoretical Chemistry and Physics, chapter, 10, Kluwer Academic Publishers (2000)