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Online since: October 2021
Authors: Chi Hui Tsou, Zheng Lu Ma, Jui Chin Chen, Yan Mei Wang, Xin Yuan Tian, Chen Gao
Attapulgite is a kind of water-rich magnesium-aluminum silicate mineral with a unique layered chain molecular structure [10-11].
Poor compatibility will cause the internal structure of the HDPE/ATT composite to be uneven, which will lead to the increase in the mechanical properties of the HDPE/ATT composite and then decrease.
Experiments show that adding ATT to HDPE will not change the original chemical structure and crystal form of HDPE.
The Journal of Physical Chemistry B, 2010, 114(7): 2390-2398
Materials Chemistry and Physics, 2017, 195: 40-48
Poor compatibility will cause the internal structure of the HDPE/ATT composite to be uneven, which will lead to the increase in the mechanical properties of the HDPE/ATT composite and then decrease.
Experiments show that adding ATT to HDPE will not change the original chemical structure and crystal form of HDPE.
The Journal of Physical Chemistry B, 2010, 114(7): 2390-2398
Materials Chemistry and Physics, 2017, 195: 40-48
Online since: January 2016
Authors: Hasan Zuhudi Abdullah, Maizlinda Izwana Idris, Kwok Joon Tan
As a matter of fact, sodium hydrogen titanate (Na2Ti3O7) and hydrogen titanate (H2Ti3O7) are two closely related structures.
According to Zhang et al. [9] and Zhu et al. [10], Ti-O skeleton of both Na2Ti3O7 and H2Ti3O7 is composed of TiO6 octahedrons which share edges and corners, resulting in a zigzag ribbon structure.
Takadama, Development of bioactive materials based on surface chemistry, J.
Zhao, Hydrogen titanate nanofibers covered with anatase nanocrystals: a delicate structure achieved by the wet chemistry reaction of the titanate nanofibers, J.
According to Zhang et al. [9] and Zhu et al. [10], Ti-O skeleton of both Na2Ti3O7 and H2Ti3O7 is composed of TiO6 octahedrons which share edges and corners, resulting in a zigzag ribbon structure.
Takadama, Development of bioactive materials based on surface chemistry, J.
Zhao, Hydrogen titanate nanofibers covered with anatase nanocrystals: a delicate structure achieved by the wet chemistry reaction of the titanate nanofibers, J.
Online since: May 2023
Authors: Bao Shuai Du, Xin Mei Li, Zhong Wen Zhang, Shuai Suo
This is probably attributed to the grain boundary segregation effect, which states that nanocrystalline structures can be in thermodynamic equilibrium due to energetics of alloying and selective distribution of alloying elements at grain boundaries.
Coating surfaces of the pure silver shows a globular structure typical of electroplated coatings and some pores can be observed.
EDS result of the micro-zone chemistry in the Ag-4.8Bi coating is shown in Fig. 3, which shows the presence of Bi element as well as C and O.
Stability of nanocrystalline metals: The role of grain-boundary chemistry and structure[J].
Coating surfaces of the pure silver shows a globular structure typical of electroplated coatings and some pores can be observed.
EDS result of the micro-zone chemistry in the Ag-4.8Bi coating is shown in Fig. 3, which shows the presence of Bi element as well as C and O.
Stability of nanocrystalline metals: The role of grain-boundary chemistry and structure[J].
Online since: May 2013
Authors: Raihan Othman, Mukhtaruddin Musa, Mohd Hanafi Ani
This blue black layer however has an open structure which does not provide a continuous barrier [13].
Figure 3: Schematic diagram of open structure of ferric tannate structure, as illustrated by Selwyn, L.
Saranya, “Allium Sativum (Garlic) Extract as nontoxic Corrosion Inhibitor”, Hindawi Publishing Corporation International Journal of Chemistry Volume 2013, page 1-4 [16] K.P.
E, “Adsorption and inhibitive properties of ethanol extracts of Musa sapientum peels as a green corrosion inhibitor for mild steel in H2SO4”, African Journal of Pure and Applied Chemistry Vol. 2 (6), pp. 046-054, June 2008 [25] Hollner, S., Mirambet, F., Rocca, E. and Steinmetz, J. (2007) “Environmentally- friendly treatments for the protection of iron artefacts of the cultural heritage against atmospheric corrosion” in C.
Figure 3: Schematic diagram of open structure of ferric tannate structure, as illustrated by Selwyn, L.
Saranya, “Allium Sativum (Garlic) Extract as nontoxic Corrosion Inhibitor”, Hindawi Publishing Corporation International Journal of Chemistry Volume 2013, page 1-4 [16] K.P.
E, “Adsorption and inhibitive properties of ethanol extracts of Musa sapientum peels as a green corrosion inhibitor for mild steel in H2SO4”, African Journal of Pure and Applied Chemistry Vol. 2 (6), pp. 046-054, June 2008 [25] Hollner, S., Mirambet, F., Rocca, E. and Steinmetz, J. (2007) “Environmentally- friendly treatments for the protection of iron artefacts of the cultural heritage against atmospheric corrosion” in C.
Online since: March 2008
Authors: Di Zhu, Ping Mei Ming, Yang Yang Hu, Yong Bin Zeng
Conclusions that
ultrasound use clearly affected deposit properties and coating mechanisms, such as catalyst specific
area, stirring dependence, surface energy evolution, dihydrogen desorption, and structure of coating,
were obtained in the document [3].
Although much research has been devoted to acoustical electrodeposition on flat surface and recessed features with smallest lateral dimensions above 1mm or depth down to 1µm like microelectronic interconnect vias, little work has been published on effect of high frequency ultrasound agitation on electroforming of detailed metal parts having typical structural height above 100µm and aspect ratios of free-standing individual structures and details above 5.
Negative patterns of the plastics structure with typical dimension of 100µm depth and 20~100µm width, were formed by UV LIGA technique on the brass substrate, measuring 50mm diameter ×0.4mm thickness, and then these recessed patterned resists were filled by microelectroforming of Ni with the irradiation of ultrasound of optimized acoustic power parameters obtained from the conventional electroforming results.
Robert: Chemistry in Britain, Vol.26 (1990) No.3, pp.251-254
Compton: Journal of Electroanalytical Chemistry, Vol.531 (2002) No.1, pp.19-24
Although much research has been devoted to acoustical electrodeposition on flat surface and recessed features with smallest lateral dimensions above 1mm or depth down to 1µm like microelectronic interconnect vias, little work has been published on effect of high frequency ultrasound agitation on electroforming of detailed metal parts having typical structural height above 100µm and aspect ratios of free-standing individual structures and details above 5.
Negative patterns of the plastics structure with typical dimension of 100µm depth and 20~100µm width, were formed by UV LIGA technique on the brass substrate, measuring 50mm diameter ×0.4mm thickness, and then these recessed patterned resists were filled by microelectroforming of Ni with the irradiation of ultrasound of optimized acoustic power parameters obtained from the conventional electroforming results.
Robert: Chemistry in Britain, Vol.26 (1990) No.3, pp.251-254
Compton: Journal of Electroanalytical Chemistry, Vol.531 (2002) No.1, pp.19-24
Online since: March 2021
Authors: Muhammad Fadhlullah Abd Shukur, Nurulain A. Adibah, S.N. Azella Zaine
Lee, "Nanofillers In The Electrolytes of Dye-sensitized solar Cells – A Short Review," Coordination Chemistry Reviews, vol. 353, pp. 58-112, 2017, doi: 10.1016/j.ccr.2017.09.026
Ramchiary, "Nano-Structured TiO2/ZnO Nanocomposite For Dye-sensitized Solar Cells Application: A Review," Renewable and Sustainable Energy Reviews, vol. 81, pp. 2264-2270, 2018, doi: 10.1016/j.rser.2017.06.035
Mattesini, "Chemical bonding and electronic-structure in MAX phases as viewed by X-ray spectroscopy and density functional theory," Thin Solid Films, vol. 621, pp. 108-130, 2017, doi: 10.1016/j.tsf.2016.11.005
Alhabeb et al., "Guidelines for Synthesis and Processing of Two-Dimensional Titanium Carbide (Ti3C2Tx MXene)," Chemistry of Materials, vol. 29, no. 18, pp. 7633-7644, 2017, doi: 10.1021/acs.chemmater.7b02847
Santos, "Synthesis, structure, properties and applications of MXenes: Current status and perspectives," Ceramics International, vol. 45, no. 15, pp. 18167-18188, 2019, doi: 10.1016/j.ceramint.2019.06.114
Ramchiary, "Nano-Structured TiO2/ZnO Nanocomposite For Dye-sensitized Solar Cells Application: A Review," Renewable and Sustainable Energy Reviews, vol. 81, pp. 2264-2270, 2018, doi: 10.1016/j.rser.2017.06.035
Mattesini, "Chemical bonding and electronic-structure in MAX phases as viewed by X-ray spectroscopy and density functional theory," Thin Solid Films, vol. 621, pp. 108-130, 2017, doi: 10.1016/j.tsf.2016.11.005
Alhabeb et al., "Guidelines for Synthesis and Processing of Two-Dimensional Titanium Carbide (Ti3C2Tx MXene)," Chemistry of Materials, vol. 29, no. 18, pp. 7633-7644, 2017, doi: 10.1021/acs.chemmater.7b02847
Santos, "Synthesis, structure, properties and applications of MXenes: Current status and perspectives," Ceramics International, vol. 45, no. 15, pp. 18167-18188, 2019, doi: 10.1016/j.ceramint.2019.06.114
Online since: February 2013
Authors: Shi Biao Zhou, An Guo Xiao, Ai Ping Hao, Yong Chen, Yuan Dao Chen, Xiao Bing Huang, Zhen Gan Chen
The Preparation and Performance of Gypsum-based Composites
Zhou Shibiao*, Xiao Anguo, Chen Yong, Chen zhengan, Hao Aiping,
Chen Yuandao, Huang Xiaobing
Chemistry,Department of Chemisty and Chemical Engineering,Hunan University of Arts and Science,Hunan Changde,415000
*To whom correspondence should be addressed, Fax:(86-736)7186115;
e-mail: zhsb1961@163.com
Keywords: Gypusm-based composites, Orthogonal experiment, PVA, Sawdust, White latex
Abstract.
Continuing hydration, crystallization and precipitation, the gypsum slurry with network structure is produced with releasing heat.
When the heated and dried, water evaporates from the internal materials and leads to porous structure to decrease the density of the composite materials.
Water evaporates from the internal materials to form porous structure, so, increasing the amount of water, on the one hand, increases the porosity of composite materials, on the other hand, induces the compactness and leads to damage the impact strength.
Acknowledgments This work was supported by the construct program of the key discipline in Hunan province(Applied Chemistry).
Continuing hydration, crystallization and precipitation, the gypsum slurry with network structure is produced with releasing heat.
When the heated and dried, water evaporates from the internal materials and leads to porous structure to decrease the density of the composite materials.
Water evaporates from the internal materials to form porous structure, so, increasing the amount of water, on the one hand, increases the porosity of composite materials, on the other hand, induces the compactness and leads to damage the impact strength.
Acknowledgments This work was supported by the construct program of the key discipline in Hunan province(Applied Chemistry).
Online since: November 2011
Authors: Yi Ping Gan, Guo Zhong Huang, Jiang Chang, Yang You, Ying Chen
The affect of soil pollution, soil structure and microbial community structure, as for irrigation, it may have toxic damage on vegetations and crops [1].
Ecology safety of landscape water requires a good water quality condition and stable aquatic ecological structure.
The risk transmission way of reclaimed water as the figure1: The toxic chemistry substances The harmful chemistry substances …… microorgan-ism The problem of reclaimed water quality The harmful of reclaimed water reused for landscape water water eutrophicat-ion Mutation of aquatic organisms …… Canceration of aquatic organisms Fig. 1 The risk transmission way of reclaimed water Constructing Evaluation Index System.
Ecology safety of landscape water requires a good water quality condition and stable aquatic ecological structure.
The risk transmission way of reclaimed water as the figure1: The toxic chemistry substances The harmful chemistry substances …… microorgan-ism The problem of reclaimed water quality The harmful of reclaimed water reused for landscape water water eutrophicat-ion Mutation of aquatic organisms …… Canceration of aquatic organisms Fig. 1 The risk transmission way of reclaimed water Constructing Evaluation Index System.
Online since: July 2012
Authors: Fu Sheng Hu, Zheng Ying Wei, Bo Lin Liu, Jun Du, Chao Tan, Zhi Hai Han
Those above can be measured experimentally but is time-consuming and expensive; what’s more due to sophisticated structure, high temperature and velocity, it is difficult to measure flow properties in the spraying gun’s chamber.
Internal powder injection structure is used in this simulation of plasma spraying.
,"Structure–property differences between supersonic and conventional atmospheric plasma sprayed zirconia thermal barrier coatings" Surface and Coatings Technology, 2011, pp. 3833-3839
,"Two-temperature transport coefficients in argon–hydrogen plasmas—i: Elastic processes and collision integrals" Plasma Chemistry and Plasma Processing, 2002, pp. 453-474
,"A new modified pseudoequilibrium calculation to determine the composition of hydrogen and nitrogen plasmas at atmospheric pressure" Plasma Chemistry and Plasma Processing, 2000, pp. 83-105
Internal powder injection structure is used in this simulation of plasma spraying.
,"Structure–property differences between supersonic and conventional atmospheric plasma sprayed zirconia thermal barrier coatings" Surface and Coatings Technology, 2011, pp. 3833-3839
,"Two-temperature transport coefficients in argon–hydrogen plasmas—i: Elastic processes and collision integrals" Plasma Chemistry and Plasma Processing, 2002, pp. 453-474
,"A new modified pseudoequilibrium calculation to determine the composition of hydrogen and nitrogen plasmas at atmospheric pressure" Plasma Chemistry and Plasma Processing, 2000, pp. 83-105
Online since: December 2014
Authors: Ju Pei Xia, Chao Qin Yang
CaO can effectively destroy the Si-A1-O network structure of potassium feldspar and form a eutectic material and reduce the melting point [5].
Results and discussion 3.1 Process analysis of system thermal response Related references [6-7] are consulted with in potash feldspar & phosphogypsum & coke system, possible reaction has the following seven reactions: 2KAlSi3O8 + 7CaSO4 + 3C = K2SO4 + 5CaSiO3 + Ca2Al2SiO7+3CO2+6SO2 (1) 2KAlSi3O8 +10CaSO4 +4.5C = K2SO4+3Ca3Si2O7+CaAl2O4 + 4.5CO2+ 9SO2 (2) 2KAlSi3O8+12CaSO4+5.5C=K2SO4+ 5Ca2SiO4+ Ca2Al2SiO7+5.5CO2+11SO2 (3) 2KAlSi3O8 +13CaSO4 +6C = K2SO4 +6Ca2SiO4 + CaAl2O4 + 6CO2+ 12SO2 (4) 2KAlSi3O8 +17CaSO4 +8C = K2SO4 +5Ca3SiO5 +Ca2Al2SiO7+8CO2 + 16SO2 (5) 4KAlSi3O8+19CaSO4+8.5C=2K2SO4+5Ca3Si2O7+2Ca2Al2SiO7+8.5CO2+17SO2 (6) 2KAlSi3O8 +19CaSO4 +9C = K2SO4 +6Ca3SiO5 + CaAl2O4 + 9CO2+ 18SO2 (7) According to the above seven reaction equation, Gibbs free energy of equation (1)-(7) is obtained by using the HSC Chemistry 5 thermodynamics analysis software at different temperatures, each respond relationship diagram between △G and T is drawn.
Fig.3 XRD graph of roasting products at n (KAlSi3O8 ):n(CaSO4 ):n(C)=2:7:3 Mineral phase structure in potassium feldspar is mainly microcline (KAlSi3O8), also contains a small amount of free α- silicon oxide.
It is clear from Δ G ─T relationship, three reactions can occur spontaneously, the structure of potash feldspar (KAlSi3O8) is decomposition to lose SiO2, gradually transformed into leucite (KAlSi2O6) and kaliophilite (KAlSiO4) when the temperature increases, equilibrium constant react with CaO and CaSO4 decreases multiples exponentially.
Inorganic solid state chemistry [M].
Results and discussion 3.1 Process analysis of system thermal response Related references [6-7] are consulted with in potash feldspar & phosphogypsum & coke system, possible reaction has the following seven reactions: 2KAlSi3O8 + 7CaSO4 + 3C = K2SO4 + 5CaSiO3 + Ca2Al2SiO7+3CO2+6SO2 (1) 2KAlSi3O8 +10CaSO4 +4.5C = K2SO4+3Ca3Si2O7+CaAl2O4 + 4.5CO2+ 9SO2 (2) 2KAlSi3O8+12CaSO4+5.5C=K2SO4+ 5Ca2SiO4+ Ca2Al2SiO7+5.5CO2+11SO2 (3) 2KAlSi3O8 +13CaSO4 +6C = K2SO4 +6Ca2SiO4 + CaAl2O4 + 6CO2+ 12SO2 (4) 2KAlSi3O8 +17CaSO4 +8C = K2SO4 +5Ca3SiO5 +Ca2Al2SiO7+8CO2 + 16SO2 (5) 4KAlSi3O8+19CaSO4+8.5C=2K2SO4+5Ca3Si2O7+2Ca2Al2SiO7+8.5CO2+17SO2 (6) 2KAlSi3O8 +19CaSO4 +9C = K2SO4 +6Ca3SiO5 + CaAl2O4 + 9CO2+ 18SO2 (7) According to the above seven reaction equation, Gibbs free energy of equation (1)-(7) is obtained by using the HSC Chemistry 5 thermodynamics analysis software at different temperatures, each respond relationship diagram between △G and T is drawn.
Fig.3 XRD graph of roasting products at n (KAlSi3O8 ):n(CaSO4 ):n(C)=2:7:3 Mineral phase structure in potassium feldspar is mainly microcline (KAlSi3O8), also contains a small amount of free α- silicon oxide.
It is clear from Δ G ─T relationship, three reactions can occur spontaneously, the structure of potash feldspar (KAlSi3O8) is decomposition to lose SiO2, gradually transformed into leucite (KAlSi2O6) and kaliophilite (KAlSiO4) when the temperature increases, equilibrium constant react with CaO and CaSO4 decreases multiples exponentially.
Inorganic solid state chemistry [M].