Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Enhancement of Absorption of Injected Gas in New Type Mechanical Stirring Injection Refine Equipment
Online since: January 2012
Authors: Sano Masamichi, Ji Cheng He, Ting An Zhang, Qiang Wang, Yan Liu
Intruction
Very small bubbles can be produced by applying mechanical stirring under proper conditions of impeller structure and rotation mode.
This paper is based on cold water model, determined the mass transfer coefficients in different condition using the system of CO2-NaOH-H2O, and determined the gas hold-up for calculated the value of the volumetric liquid mass transfer coefficient, AK, and utilization rate of CO2, The measurements were conducted with changing CO2 flow rate, rotation mode and speed, nozzle immersion depth, and impeller and nozzle structures.
Impellers of various structures and sizes were tested.
[3] P V Danckwerts, “Significance of liquid-film coefficients in gas absorption”, Industry & Engineering Chemistry, vol.43, no.6, pp.1460-1467, 1951
This paper is based on cold water model, determined the mass transfer coefficients in different condition using the system of CO2-NaOH-H2O, and determined the gas hold-up for calculated the value of the volumetric liquid mass transfer coefficient, AK, and utilization rate of CO2, The measurements were conducted with changing CO2 flow rate, rotation mode and speed, nozzle immersion depth, and impeller and nozzle structures.
Impellers of various structures and sizes were tested.
[3] P V Danckwerts, “Significance of liquid-film coefficients in gas absorption”, Industry & Engineering Chemistry, vol.43, no.6, pp.1460-1467, 1951
Online since: February 2012
Authors: Jing Wen Xue, Zhe Wang, Wen Xia Liu
Liquid mulching film can glue soil particles and generate granule structure[1].
Lignin film finally degraded into humic acid which could improve the granular structure of soil [3].
Zhu, Blends of vinylic copolymer with plasticized lignin:thermal and mechanical properties, J Appl Polym Sci, 81 (2001), p 861 [3]Tingda Jiang, Lignin, Chemical Industry Press,Beijing (2001) [4]Huiquan Chen, Yunhuai Gong, The Situation and Aspect of Application for Macromolecule I – Cellulose, Lignin and Starch, Yunnan Chemical Engineering, Vlo 11(1996), p 41 [5]Jianfa Li, Yonghong Zhou, Zhanjun Wang, Yunyou Zhong and Zhanqian Song, Study on Effects of Modified Sulfite Spent Liquor upon Sandy Soil Structure, Chemistry and Industry of Forest Products, Vol 23(2003) , p 1 [6]D.
Lignin film finally degraded into humic acid which could improve the granular structure of soil [3].
Zhu, Blends of vinylic copolymer with plasticized lignin:thermal and mechanical properties, J Appl Polym Sci, 81 (2001), p 861 [3]Tingda Jiang, Lignin, Chemical Industry Press,Beijing (2001) [4]Huiquan Chen, Yunhuai Gong, The Situation and Aspect of Application for Macromolecule I – Cellulose, Lignin and Starch, Yunnan Chemical Engineering, Vlo 11(1996), p 41 [5]Jianfa Li, Yonghong Zhou, Zhanjun Wang, Yunyou Zhong and Zhanqian Song, Study on Effects of Modified Sulfite Spent Liquor upon Sandy Soil Structure, Chemistry and Industry of Forest Products, Vol 23(2003) , p 1 [6]D.
Online since: February 2012
Authors: Jiang Nan Shen, Jie Yu, Yue Xia Chu, Yong Zhou, Wei Jun Chen
The chemical composition and structure of APAN/MMT was characterized by FTIR and XRD.
There is no diffraction peaks in spectrum after the PAN/MMT amidoximed, it shows that layered structure of APAN/MMT has been divested.
The structure of Na-MMT, Organ-MMT, PAN/MMT, APAN/MMT was characterized by FTIR and XRD, the results showed that AN, MMT achieved a successful intercalated polymerization and amidoxime functionality. 2.
Water Treatment(China) Vol. 35(2009), p.13 [3] Choi S H, Nho Y C: Radiation Physics and Chemistry Vol. 57(2000), p. 187 [4] Majdan M S, Pikus S,Gajowiak A, et al: Appl.
There is no diffraction peaks in spectrum after the PAN/MMT amidoximed, it shows that layered structure of APAN/MMT has been divested.
The structure of Na-MMT, Organ-MMT, PAN/MMT, APAN/MMT was characterized by FTIR and XRD, the results showed that AN, MMT achieved a successful intercalated polymerization and amidoxime functionality. 2.
Water Treatment(China) Vol. 35(2009), p.13 [3] Choi S H, Nho Y C: Radiation Physics and Chemistry Vol. 57(2000), p. 187 [4] Majdan M S, Pikus S,Gajowiak A, et al: Appl.
Online since: June 2010
Authors: Jian Meng, Wei Sun, Jing Huai Zhang, De Ping Zhang, Zheng Tian, Hua Yi Lu, Ding Xiang Tang
Development of Heat-Resistance and Creep-Resistance Magnesium
Alloy of Die-Casting Mg-4Al-4La and/or Ce
Jian Meng1,a
, Jinghuai Zhang2,b, Deping Zhang1,c, Zheng Tian
1,d, Wei Sun
1,e,
Huayi Lu1,f, Dingxiang Tang1,g
1
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry,
Chinese Academy of Sciences, Changchun 130022, China
2
Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin
Engineering University, Harbin 150001, China
a
jmeng@ciac.jl.cn, bzhangjinghuai@hrbeu.edu.cn, czdeping@ciac.jl.cn, dtztxhhgo@ciac.jl.cn,
e
swyx@ciac.jl.cn, fhylu@ciac.jl.cn, gdxtang@ciac.jl.cn
Keywords: Mg-Al-RE alloy; Heat-resistance Mg alloy; Creep-resistance Mg alloy; La/Ce
mischmetal.
The phase composition, structure and morphologywere characterized by X-ray diffraction (XRD) and TEM.
SAED analyses further confirm that both rod-like and petal-like particles are Al11RE3 phase, which belongs to body-centered orthorhombic structure, and polygonal particles are Al2RE phase which belongs to face-centered cubic structure.
The phase composition, structure and morphologywere characterized by X-ray diffraction (XRD) and TEM.
SAED analyses further confirm that both rod-like and petal-like particles are Al11RE3 phase, which belongs to body-centered orthorhombic structure, and polygonal particles are Al2RE phase which belongs to face-centered cubic structure.
Online since: May 2011
Authors: Wei Fan Chen, Hui Quan Li, Yong Xiu Li
One step synthesis of europia nanoparticles via thermal decomposition of europium propionate crystals
Weifan Chen 1, 2,a, Yongxiu Li 2,b and Huiquan Li 3,c
1 School of Materials Science & Engineering, Nanchang University, Nanchang 330031, China
2 Research Center of Rare Earths & Micro/Nano Functiontal Materials, Nanchang University, Nanchang 330031, China 3 Chemistry Department , Fuyang Normal College , Fuyang 236041, China
a weifan-chen@163.com, b yxli@ncu.edu.cn, c huiquanli@126.com
Keywords: Europia nanoparticles, Thermal decomposition, Europium propionate crystals.
Most of these useful functions depend strongly on their composition and structures.
As shown in Fig.2a, the as-obtained crystals from the propionate solution present stacks of large-sized flakes, which are prone to come off in flat and thin pieces When the calcination temperature increases to 600oC, the as-calcined products display a stacklike structure composed of tightly-agglomerated nanoparticles and still remain samdwich morphology of the precursor.
Higher calcination temperature promotes the breakup of three-dimension structures and dispersion of nanoparticles.
Most of these useful functions depend strongly on their composition and structures.
As shown in Fig.2a, the as-obtained crystals from the propionate solution present stacks of large-sized flakes, which are prone to come off in flat and thin pieces When the calcination temperature increases to 600oC, the as-calcined products display a stacklike structure composed of tightly-agglomerated nanoparticles and still remain samdwich morphology of the precursor.
Higher calcination temperature promotes the breakup of three-dimension structures and dispersion of nanoparticles.
Online since: September 2010
Authors: Ismail Manal, Zahira Yaakob, Hakim Lukman, Wan Ramli Wan Daud
HAP
has potential to be develop as catalyst or catalyst support because this biomaterial has a mesopores
structure and particle size of 5 - 40 nm (Atir et al, 2006; Marques et al, 2006).
Mesopores structure have particle size 2-50 nm, has high surface area and high porosity (Prelot et al, 2005), as a result, HAP is an excellent high surface area support to make catalysts.
Molecule structure of Ca5(PO4)3(OH) consists of PO43 tetrahedra, O-H group and calcium.
Journal of Solid State Chemistry 177:134-138
Mesopores structure have particle size 2-50 nm, has high surface area and high porosity (Prelot et al, 2005), as a result, HAP is an excellent high surface area support to make catalysts.
Molecule structure of Ca5(PO4)3(OH) consists of PO43 tetrahedra, O-H group and calcium.
Journal of Solid State Chemistry 177:134-138
Online since: July 2012
Authors: Yu Jie Chi, Wei Xu, Lei Lv, Cui Yu, Chen Chen, Qiang Sun
Fig .7 showed that M-WEP foams showed strong structure, small bubble size.
It appears that when solubility of M-WEP is high, this will lead to a higher viscosity and better physical structure, which then will bere flected in better foaming properties.
Conclusion The experiment proved that Maillard reaction can effectively improve foam structure and foaming properties of WEP.The best optimum reaction conditions were as follows: reaction temperature was 50˚C, reaction time was 120min, the weight ratio of maltodextrin:protein was 8‰.
Food Chemistry.
It appears that when solubility of M-WEP is high, this will lead to a higher viscosity and better physical structure, which then will bere flected in better foaming properties.
Conclusion The experiment proved that Maillard reaction can effectively improve foam structure and foaming properties of WEP.The best optimum reaction conditions were as follows: reaction temperature was 50˚C, reaction time was 120min, the weight ratio of maltodextrin:protein was 8‰.
Food Chemistry.
Online since: June 2013
Authors: Ming Gui Xia, Xiong Yi Peng
Synthesis and Microstructure Study of Polycarboxylated Superplasticizer with Different Carboxylic Group Content
Xiongyi Peng1,a, Minggui Xia1,b
1 School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan, 430073,China
ahappyyi888@163.com b2465881223@qq.com
Keywords:Polycarboxylate-type superplasticizer, aggregation, microstructure, self-assembly
Abstract.
In general, the chemical structures of PC have two necessary parts, one is carboxylic groups, and another is PEO side chains.
The molecular structures of PCs can be seen in Figure 1.
Table 1 Monomer ratio and structural characteristics of PC with different carboxylic groups PCs n (MAA) n (MPEOM,n=45) Mn Mw Mw /Mn DP PC-a 1.2 1 23600 40100 1.7 10.8 PC-b 7.2 1 27240 49030 1.8 10.1 Fig.1 Molecular structures of PC with different carboxylic group content GPC measurement.
In general, the chemical structures of PC have two necessary parts, one is carboxylic groups, and another is PEO side chains.
The molecular structures of PCs can be seen in Figure 1.
Table 1 Monomer ratio and structural characteristics of PC with different carboxylic groups PCs n (MAA) n (MPEOM,n=45) Mn Mw Mw /Mn DP PC-a 1.2 1 23600 40100 1.7 10.8 PC-b 7.2 1 27240 49030 1.8 10.1 Fig.1 Molecular structures of PC with different carboxylic group content GPC measurement.
Online since: November 2013
Authors: Mohd Nor Asiah, Saifollah Abdullah, Mohd Husairi Fadzilah Suhaimi, C.H. Rosmani, Mohamad Rusop, A.Z. Zainurul
The images presented show phosphate particles starts getting sintered on annealing with formation near-spherical to rod-like structure at higher temperature.
The structures deposited on glass substrate were composed of rod like and near-spherical nanostructure with length below 12 nm.
The peaks were divided into two because of the symmetry of phosphate structure.
FunamotoSynthesis and Fluorescence Properties of Europium-Substituted Lanthanum Orthophosphate and Condensed Phosphates, Advances in Materials Physics and Chemistry 2 (2012)
The structures deposited on glass substrate were composed of rod like and near-spherical nanostructure with length below 12 nm.
The peaks were divided into two because of the symmetry of phosphate structure.
FunamotoSynthesis and Fluorescence Properties of Europium-Substituted Lanthanum Orthophosphate and Condensed Phosphates, Advances in Materials Physics and Chemistry 2 (2012)
Online since: February 2020
Authors: Wen Yi Wang, Chi Wai Kan, Rattanaphol Mongkholrattanasit, Kwok Tung Hui, Maturod Viengsima, Nittaya Wansopa, Kamol Promlawan, Wirat Wongphakdee
Examining the Water Vapour Transmission of Socks
Wenyi Wang1,a, Kwok-Tung Hui1,b, Chi-Wai Kan1,c*,
Maturod Viengsima2,d, Nittaya Wansopa2,e, Kamol Promlawan2,f,
Wirat Wongphakdee3,g and Rattanaphol Mongkholrattanasit2,h*
1Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom,
Hong Kong, China.
2Faculty of Industrial Textiles and Fashion Design,
Rajamangala University of Technology Phra Nakhon, Bangkok, Thailand
3Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand
awangwenyi1111@gmail.com, btung.hui@connect.polyu.hk, ctccwk@polyu.edu.hk, dmatured.v@rmutp.ac.th, enittaya.w@rmutp.ac.th, fkamol.p@rmutp.ac.th, gwirat@g.swu.ac.th, hrattanaphol.m@rmutp.ac.th
Keywords: Water vapour, Transmission, Socks, Comfort of textile
Abstract.
In An introduction to fibre structure, physical properties of textile fi- bres; The Textile Institute, Heinemann: London, 1975, Chap. 1.
In An introduction to fibre structure, physical properties of textile fi- bres; The Textile Institute, Heinemann: London, 1975, Chap. 1.
In An introduction to fibre structure, physical properties of textile fi- bres; The Textile Institute, Heinemann: London, 1975, Chap. 1.
In An introduction to fibre structure, physical properties of textile fi- bres; The Textile Institute, Heinemann: London, 1975, Chap. 1.
In An introduction to fibre structure, physical properties of textile fi- bres; The Textile Institute, Heinemann: London, 1975, Chap. 1.
In An introduction to fibre structure, physical properties of textile fi- bres; The Textile Institute, Heinemann: London, 1975, Chap. 1.