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Online since: October 2022
Authors: Bambang Kismono Hadi, Lia Amelia Tresna Wulan Asri, Nina Djustiana, Veni Takarini
Technical Surfactant Effect on Precipitation Method of Glutinous Rice Flour Filler Size Reduction
Veni Takarini1,3a*, Lia Amelia Tresna Wulan Asri2,b, Nina Djustiana3,c*, Bambang Kismono Hadi4,d
1Doctoral Program of Materials Science and Engineering, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesha 10 Bandung, 40132, Indonesia
2Materials Science and Engineering Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesha 10 Bandung, 40132, Indonesia
3Dental Materials and Technology Department, Faculty of Dentistry, Universitas Padjadjaran, Sekeloa Selatan 1 Bandung, 40132, Indonesia
4Lightweight Structures Research Group, Faculty of Mechanical and Aerospace Engineering, Institut Teknologi Bandung, Ganesha 10 Bandung, 40132, Indonesia
a*veni.takarini@fkg.unpad.ac.id, blia.asri@material.itb.ac.id, c*nina.djustiana@fkg.unpad.ac.id, dbkhadi@ae.itb.ac.id
Keywords: Technical surfactant, glutinous rice flour, filler
These different phenomena could be explained by the structure of amylose that is used in the Dong experiment, and glutinous rice flour amylopectin from this research.
Fennema, Food Chemistry, third ed., Marcel Dekker, Inc., New York, 1996
Zhou, Effects of surfactants on size and structure of amylose nanoparticles prepared by precipitation, Bull.
Whistler, Starch: Chemistry and technology, third ed., Elsevier, USA, 2009
These different phenomena could be explained by the structure of amylose that is used in the Dong experiment, and glutinous rice flour amylopectin from this research.
Fennema, Food Chemistry, third ed., Marcel Dekker, Inc., New York, 1996
Zhou, Effects of surfactants on size and structure of amylose nanoparticles prepared by precipitation, Bull.
Whistler, Starch: Chemistry and technology, third ed., Elsevier, USA, 2009
Online since: October 2011
Authors: Yu Han Sun, Ya Chun Liu, Hai Tao Wu, Li Tao Jia, Zai Hui Fu, Jian Gang Chen, De Bao Li, Du Lin Yin
Effect of the Calcination Temperature on the Catalyst Performance of ZrO2-Supported Cobalt for Fischer-Tropsch Synthesis
Yachun Liu 1, a, Haitao Wu 1,b , Litao Jia2, Zaihui Fu1, Jiangang Chen2, Debao Li2, Dulin Yin1, and Yuhan Sun 2,c
1 Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research (Ministry o f Education), Key Lab of Resources Fine-Processing and Advanced Materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, Hunan,China
2 State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001,Shanxi,China
ahyachunliu@yahoo.com.cn, byacl315@163.com, cyhsun@sxicc.ac.cn
Keywords: zirconia, cobalt catalyst, Fischer-Tropsch synthesis, calcination temperature
Abstract.
Table 1 Physico-chemical properties of supports and their corresponding Co catalysts Sample BET surface area (m2/g) Pore volume (cm3/g) Pore size (nm) Co3O4 size by XRD (nm) Reducibility by TG (%) <400 °C PMZ-14 45.1 0.17 14.3 CPMZ-14-200 48.0 0.15 14.8 9.0 65.7 CPMZ-14-250 46.5 0.15 14.8 10.5 78.9 CPMZ-14-400 41.9 0.15 15.0 12.3 88.6 CPMZ-14-650 39.3 0.15 14.8 15.9 99.2 Effect of the calcination temperature on phase structure.
This observation illustrates that the effects of the catalyst calcination temperature on the support’s crystalline-phase structure are negligible.
Khodakov et al. [5,6] also noticed a similar phenomenon during their study on the effects of the calcination temperature on the structure of a SiO2-supported Co catalyst and on the Fischer-Tropsch synthesis catalytic performance.
Table 1 Physico-chemical properties of supports and their corresponding Co catalysts Sample BET surface area (m2/g) Pore volume (cm3/g) Pore size (nm) Co3O4 size by XRD (nm) Reducibility by TG (%) <400 °C PMZ-14 45.1 0.17 14.3 CPMZ-14-200 48.0 0.15 14.8 9.0 65.7 CPMZ-14-250 46.5 0.15 14.8 10.5 78.9 CPMZ-14-400 41.9 0.15 15.0 12.3 88.6 CPMZ-14-650 39.3 0.15 14.8 15.9 99.2 Effect of the calcination temperature on phase structure.
This observation illustrates that the effects of the catalyst calcination temperature on the support’s crystalline-phase structure are negligible.
Khodakov et al. [5,6] also noticed a similar phenomenon during their study on the effects of the calcination temperature on the structure of a SiO2-supported Co catalyst and on the Fischer-Tropsch synthesis catalytic performance.
Online since: January 2012
Authors: Jian Xin Luo, Li Yan Liang, Man Geng Lu, Chao Long Yang
Synthesis and Luminescence Properties of Three Europium Complexes with Phenanthroline Derivatives and β-Diketonates
Chaolong Yang1, Jianxin Luo1, Liyan Liang2 and Mangeng Lu2*
1Guangzhou Institute of Chemistry, Chinese Academy of
Science, 368 Xingke Road, Guangzhou, China
Graduate School of the Chinese Academy of Sciences, Beijing100039, China
yclzjun@yahoo.com.cn, luojianxin392@163.com
2Guangzhou Institute of Chemistry, Chinese Academy of
Science, 368 Xingke Road, Guangzhou, China
lyliang@gic.ac.cn, mglu@gic.ac.cn
Abstract.
The structures of Eu-complexes were confirmed by FT-IR, 1H NMR and element analysis (EA).
Scheme 1 Structures of Eu-complex and synthesis procedure of Eu-complexes Synthesis and characterization Synthesis The structures of ligands and Eu-complexes were shown in Scheme 1.
The structures of Eu-complexes were confirmed by FT-IR, 1H NMR and element analysis (EA).
Scheme 1 Structures of Eu-complex and synthesis procedure of Eu-complexes Synthesis and characterization Synthesis The structures of ligands and Eu-complexes were shown in Scheme 1.
Online since: June 2018
Authors: Ivo Kusák, Pavel Rovnaník, Patrik Bayer, Maria Míková
It is related to the microstructure of the cement matrix, its pore structure, porosity, and pore size distribution.
Development of multifunctional materials is in the scope of many researchers in order to fulfil the demand for smart structures.
Böhni: Electrical Resistivity and Dielectric Properties of Hardened Cement and Mortar (Institute of Materials Chemistry and Corrosion, Swiss Federal Institute of Technology, ETH Hönggerber, Switzerland 1996)
Ou: Self-Sensing Concrete in Smart Structures (Butterworth Heinemann, UK 2014)
Adamson: Textbook of Physical Chemistry (Academic Press inc., London, UK 1973).
Development of multifunctional materials is in the scope of many researchers in order to fulfil the demand for smart structures.
Böhni: Electrical Resistivity and Dielectric Properties of Hardened Cement and Mortar (Institute of Materials Chemistry and Corrosion, Swiss Federal Institute of Technology, ETH Hönggerber, Switzerland 1996)
Ou: Self-Sensing Concrete in Smart Structures (Butterworth Heinemann, UK 2014)
Adamson: Textbook of Physical Chemistry (Academic Press inc., London, UK 1973).
Online since: July 2020
Authors: Budhy Kurniawan, Djati Handoko, Dhawud Sabilur Razaq, Dicky Rezky Munazat, Qoimatul Mustaghfiroh, Dwi Nanto, Amilita Medisa Dharmayanti
From XRD result, it is found that all the sample under investigated show orthorhombic structure indicating that A site substitution does not modify structure.
Refinement results shows that the Nd1-xSrxMnO3 (x = 0; 0.5; 1) materials has an orthorhombic structure.
The structure of this material shown by Figure 2.
Indeed, it successfully influenced the morphology structure of the sample.
Rojo, Journal of Solid State Chemistry, vol. 174, no. 1, pp. 52–59, Aug. 2003
Refinement results shows that the Nd1-xSrxMnO3 (x = 0; 0.5; 1) materials has an orthorhombic structure.
The structure of this material shown by Figure 2.
Indeed, it successfully influenced the morphology structure of the sample.
Rojo, Journal of Solid State Chemistry, vol. 174, no. 1, pp. 52–59, Aug. 2003
Online since: May 2004
Authors: Keizo Uematsu, Nozomu Uchida, Satoshi Tanaka, Kiminori Sato
Uematsu
Department of Chemistry, Nagaoka University of Technology, 1603-1 Kamiomioka
Nagaoka, Niigata, 940-2188, Japan
Keywords: Large defect, grain growth, alumina, sintering
Abstract.
Their internal structures were examined with an optical microscope in the transmission mode.
However detailed structures of the large defects have not been clarified even in these studies.
Advanced technique must be developed to characterize the detailed structure of the defects.
Structure of large defect was characterized in detail with the method.
Their internal structures were examined with an optical microscope in the transmission mode.
However detailed structures of the large defects have not been clarified even in these studies.
Advanced technique must be developed to characterize the detailed structure of the defects.
Structure of large defect was characterized in detail with the method.
Online since: July 2015
Authors: Yan Liu, Wen Yan Luo
Large ion Y3+ softened hydrotalcite porous structure, but did not change its layered crystal structure.
Moreover, its performance could be controlled by modifying the precursor particles structure, which makes it as a new alkaline catalytic material with good application prospect[7-8].
Its strength size reflects the integrity of the crystal structure [10].
With the increase of Y3+, the diffraction peak intensity of MgO declines, which indicates that crystal structure of MgO would be effected when Y3+ doping amount increased to a certain degree.
According to the classification of adsorption isotherm curve proposed by International Union of Pure and Applied Chemistry(IUPAC), all curves belongs to the Ⅳcategory.
Moreover, its performance could be controlled by modifying the precursor particles structure, which makes it as a new alkaline catalytic material with good application prospect[7-8].
Its strength size reflects the integrity of the crystal structure [10].
With the increase of Y3+, the diffraction peak intensity of MgO declines, which indicates that crystal structure of MgO would be effected when Y3+ doping amount increased to a certain degree.
According to the classification of adsorption isotherm curve proposed by International Union of Pure and Applied Chemistry(IUPAC), all curves belongs to the Ⅳcategory.
Online since: September 2013
Authors: Xiao Yan Song, Sheng Zhi Zhou, Bo Wen Cheng
The structure of octavinyl POSS
Before blending, PAN and POSS were dried at 50˚C under vacuum for 24 h.
Results and discussion Structure and morphology The FESEM images of PAN/POSS nanofibers are illustrated in Figure 2.
Cao: Industrial & Engineering Chemistry Research.
Results and discussion Structure and morphology The FESEM images of PAN/POSS nanofibers are illustrated in Figure 2.
Cao: Industrial & Engineering Chemistry Research.
Online since: August 2013
Authors: Jeremy Zheng Li
The increased element Cr composition in nanocoating can well control molecular diffusion in internal material phase boundary and the intensified grain boundary in nanocoating structure can compensate the oxide loss to keep nanocoating material more durable and reliable in corrosive prevention.
Both results show close results and superior performance in nanocoating than in regular coating because of strong corrosive-resistant in nanocoated material structure.
Aw, K Itoh, Solar-driven self-cleaning coating for a painted surface, Journal of Chemistry, 9 (2006) 829-835.
Both results show close results and superior performance in nanocoating than in regular coating because of strong corrosive-resistant in nanocoated material structure.
Aw, K Itoh, Solar-driven self-cleaning coating for a painted surface, Journal of Chemistry, 9 (2006) 829-835.
Online since: May 1998
Zannela (I nstitute of Chemistry, Inorganic Technologies and Advanced
Materials, Padua, Italy), Prof.
Today, especially attracti ve fields are direct breakthrough into the world of atoms and their arrangements via high resolution methods and nanostructure designs; models applicati ons and computer simulation at a large scale to predict the structure and properties of materi als; and use of principles of self-organization of livi ng organisms for synthesis and tailoring of materials structure at the molecular level (biomimicric materials).
Today, especially attracti ve fields are direct breakthrough into the world of atoms and their arrangements via high resolution methods and nanostructure designs; models applicati ons and computer simulation at a large scale to predict the structure and properties of materi als; and use of principles of self-organization of livi ng organisms for synthesis and tailoring of materials structure at the molecular level (biomimicric materials).