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Online since: May 2011
Authors: Wan Lin Wang, Jian Gong Shi
Application Study of AlCl3/Al Catalyst in Fridel-crafts Acylation Reaction
Wang Wanlin1,a, Shi Jiangong2,b
1The Institute of Application Chemistry, Hebei North College,
Zhangjiakou, 075000, Hebei, China
2Beijing Yanshan Branch Company of SCC, Beijing 102400, China
awangwl8341@126.com
bshijiangong@126.com
Keywords: Fridel-Crafts acylation; Aluminum chloride; Benzene; Benzoyl chloride; Diphenyl ketone
Abstract: The traditional AlCl3 catalyst was substituted by a new-type solid acidic catalyst AlCl3/Al for the synthetic reaction of Fridel-Craft acylation from benzene and benzoyl chloride to diphenyl ketone.
Advanced organic chemistry: reactions ,mechanisms and structures. 4th Ed.
Industrial Chemistry library.
Computers and Applied Chemistry (Chinese), 2007, 24(10): 1393-1396 [4] T.
Organic Chemistry Experiment(Chinese).Beijing: Higher Education Press.(1985). p. 124-130
Advanced organic chemistry: reactions ,mechanisms and structures. 4th Ed.
Industrial Chemistry library.
Computers and Applied Chemistry (Chinese), 2007, 24(10): 1393-1396 [4] T.
Organic Chemistry Experiment(Chinese).Beijing: Higher Education Press.(1985). p. 124-130
Online since: March 2012
Authors: Idalia Gómez, Israel López, Alejandro Vázquez
Besides, when the structures are growing other forces can act on them (e.g. electroosmotic flow, gravity, nanostructure-electrode, inter-nanostructural and intra-nanostructural interactions) resulting in a tangled conformation.
Pickett, Nanocrystalline Semiconductors: Synthesis, Properties and Perspectives, Chemistry of Materials. 13 (2001) 3843-3858
Bai, Size-selective Synthesis of Zinc Sulfide Hierarchical Structures and Their Photocatalytic Activity, Crystal Growth & Design. 7 (2007) 153-158
Strouse, Microwave Synthetic Route for Highly Emissive TOP/TOP-S Passivated CdS Quantum Dots, Chemistry of Materials. 21 (2009) 3586-3592
Ganguli, P. a Ramakrishnan, Synthesis of Inorganic Solids Using Microwaves, Chemistry of Materials. 11 (1999) 882-895
Pickett, Nanocrystalline Semiconductors: Synthesis, Properties and Perspectives, Chemistry of Materials. 13 (2001) 3843-3858
Bai, Size-selective Synthesis of Zinc Sulfide Hierarchical Structures and Their Photocatalytic Activity, Crystal Growth & Design. 7 (2007) 153-158
Strouse, Microwave Synthetic Route for Highly Emissive TOP/TOP-S Passivated CdS Quantum Dots, Chemistry of Materials. 21 (2009) 3586-3592
Ganguli, P. a Ramakrishnan, Synthesis of Inorganic Solids Using Microwaves, Chemistry of Materials. 11 (1999) 882-895
Online since: June 2011
Authors: Di Wang, Shuang Ying Wei, Li Jiang Hu, Peng Zhu
Influence of Molecular Structure of POSS on Gas-molecule DiffusionCoefficients using Molecular Dynamic Simulation
Di Wang1, 2, a, Peng Zhu2, Shuangying Wei1 and Lijiang Hu2, b
1Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
2 Chemistry Department, Harbin Institute of Technology, Harbin 150001, China
adiwang1030@126.com, bhulijiang2008@126.com
Keywords: POSS; molecular dynamics simulations; gas self-diffusion coefficient; polymorphic structure.
The porous structure facilitates channels for water/small gas molecules to diffuse into the film surface where corrosion occurs.
The reason for the self-diffusion coefficients of small gas molecules in POSS cells increasing is that the fully close cage structure of POSS transform to the ladder structure, which means the structure of POSS transform from 4 Si-O ring in T8 to 6 Si-O ring in T8 (OH)2, even to lamellar structure of T8 (OH)4.
Division of Polymer Chemistry, Inc.
Division of Polymer Chemistry, Inc.
The porous structure facilitates channels for water/small gas molecules to diffuse into the film surface where corrosion occurs.
The reason for the self-diffusion coefficients of small gas molecules in POSS cells increasing is that the fully close cage structure of POSS transform to the ladder structure, which means the structure of POSS transform from 4 Si-O ring in T8 to 6 Si-O ring in T8 (OH)2, even to lamellar structure of T8 (OH)4.
Division of Polymer Chemistry, Inc.
Division of Polymer Chemistry, Inc.
Online since: June 2020
Authors: Libor Topolář, Michaela Hoduláková, Barbara Kucharczyková
The results show that the time of „critical changes" in the internal structure of the material can be determined.
Taşdemir: Nondestructive testing of materials and structures.
Liska (ed.): Lea's chemistry of cement and concrete.
Cement and concrete chemistry.
Lea's Chemistry of Cement and Concrete: 157. (2019)
Taşdemir: Nondestructive testing of materials and structures.
Liska (ed.): Lea's chemistry of cement and concrete.
Cement and concrete chemistry.
Lea's Chemistry of Cement and Concrete: 157. (2019)
Online since: March 2016
Authors: Benedict I. Ita, Emeka E.J. Iweala, Joseph A. Adekoya, Kehinde O. Ogunniran, Tolutope O. Siyanbola, Cyril O. Ehi-Eromosele
The XRD patterns indicate that the crystalline structure is single cubic spinel phase and the spinel structure is retained after silica coating.
The nanoparticles after silica coatings retained the faceted structure of uncoated samples but had a fairly lesser regular near-spherical structure compared with the bare sample.
Iida, Synthesis of Magnetic Nanoparticles and their Application to Bioassays, Analytical and Bioanalytical Chemistry 384 (2006) 593-600
Zhang, Effects of surface coordination chemistry on the magnetic properties of MnFe2O4 spinel ferrite nanoparticles, J.
Pawar, Formation, Microstructure and Magnetic Properties of Nanocrystalline MgFe2O4, Materials Chemistry and Physics 132 (2012) 782–787
The nanoparticles after silica coatings retained the faceted structure of uncoated samples but had a fairly lesser regular near-spherical structure compared with the bare sample.
Iida, Synthesis of Magnetic Nanoparticles and their Application to Bioassays, Analytical and Bioanalytical Chemistry 384 (2006) 593-600
Zhang, Effects of surface coordination chemistry on the magnetic properties of MnFe2O4 spinel ferrite nanoparticles, J.
Pawar, Formation, Microstructure and Magnetic Properties of Nanocrystalline MgFe2O4, Materials Chemistry and Physics 132 (2012) 782–787
Online since: August 2012
Authors: Lei Du, Fa Rong Huang, Hui Min Qi, Yan Zou, Mei Ling Xu
Hb-PDEBS displayed a strong absorption due to π-π* transition and exhibited the most intensity structured emission with a maximum around 500 nm.
Hb-PDEBS shows a good intensity structured emission and has a great potential to be used as light-emitting organic materials.
Webster, Hyperbranched Polyphenylenes, ACS Division of Polymer Chemistry meeting. vol. 29 (1988) 310-311
Interrante, Synthesis and structure of a highly branched polycarbosilane derived from (chloromethyl) trichlorosilane, Organometallics. vol. 10 (1991) 1336-1344
Kim, Hyperbranched polymers 10 years after, Journal of Polymer Science Part A: Polymer Chemistry. vol. 36 (1998) 1685-1698
Hb-PDEBS shows a good intensity structured emission and has a great potential to be used as light-emitting organic materials.
Webster, Hyperbranched Polyphenylenes, ACS Division of Polymer Chemistry meeting. vol. 29 (1988) 310-311
Interrante, Synthesis and structure of a highly branched polycarbosilane derived from (chloromethyl) trichlorosilane, Organometallics. vol. 10 (1991) 1336-1344
Kim, Hyperbranched polymers 10 years after, Journal of Polymer Science Part A: Polymer Chemistry. vol. 36 (1998) 1685-1698
Online since: June 2025
Authors: Nandang Mufti, Sunaryono Sunaryono, Ahmad Taufiq, Markus Diantoro, I. Gusti Ayu Isnaini Fatha Ramadhani, Tahta Amrillah, Graeme R. Blake
It crystallizes into the rhombohedral structure derivative K4CdCl6 with space group R-3c.
(a) Top view of the crystal structure of Ca3NiMnO6.
Inami, “Synthesis, Structure, and Magnetic Properties of Ca3BMnO6 (B=Ni, Zn) and Ca3ZnCoO6 Crystallizing in the K4CdCl6 Structure,” Journal of Solid State Chemistry, vol. 145, no. 1, pp. 302–308, 1999, doi: https://doi.org/10.1006/jssc.1999.8270
Matsushita, “Magnetic behavior of spin-chain compounds, Sr3ZnRhO6 and Ca3NiMnO6, from heat capacity and AC susceptibility studies,” Journal of Solid State Chemistry, vol. 177, no. 10, pp. 3270–3273, 2004, doi: https://doi.org/10.1016/j.jssc.2004.05.050
Kosuge, “Synthesis and Magnetic Properties of New Series of One-Dimensional Oxides Ca3Co1+xB1−xO6(B=Ir, Ru),” Journal of Solid State Chemistry, vol. 140, no. 1, pp. 14–19, 1998, doi: https://doi.org/10.1006/jssc.1998.7798
(a) Top view of the crystal structure of Ca3NiMnO6.
Inami, “Synthesis, Structure, and Magnetic Properties of Ca3BMnO6 (B=Ni, Zn) and Ca3ZnCoO6 Crystallizing in the K4CdCl6 Structure,” Journal of Solid State Chemistry, vol. 145, no. 1, pp. 302–308, 1999, doi: https://doi.org/10.1006/jssc.1999.8270
Matsushita, “Magnetic behavior of spin-chain compounds, Sr3ZnRhO6 and Ca3NiMnO6, from heat capacity and AC susceptibility studies,” Journal of Solid State Chemistry, vol. 177, no. 10, pp. 3270–3273, 2004, doi: https://doi.org/10.1016/j.jssc.2004.05.050
Kosuge, “Synthesis and Magnetic Properties of New Series of One-Dimensional Oxides Ca3Co1+xB1−xO6(B=Ir, Ru),” Journal of Solid State Chemistry, vol. 140, no. 1, pp. 14–19, 1998, doi: https://doi.org/10.1006/jssc.1998.7798
Online since: February 2014
Authors: Hiroyuki Takeno, Yuta Kuribayashi
Structures of a turbid gel and a nearly transparent gel were compared in this study.
The optical microscopy observation showed that a spherulite structure was formed for the turbid gel, but for the transparent gel no distinct structure was seen in the scale of optical microscopy.
Introduction Low-molecular weight organogelators (LMWOGs) and their organogels have attracted much interest because of applications in the field such as petroleous chemistry, cosmetics and food chemistry.
In the initial stage (t < 10 sec), no structures were observed.
Such spherulite structures have also been observed for other low-molecular weight organogels [5,6].
The optical microscopy observation showed that a spherulite structure was formed for the turbid gel, but for the transparent gel no distinct structure was seen in the scale of optical microscopy.
Introduction Low-molecular weight organogelators (LMWOGs) and their organogels have attracted much interest because of applications in the field such as petroleous chemistry, cosmetics and food chemistry.
In the initial stage (t < 10 sec), no structures were observed.
Such spherulite structures have also been observed for other low-molecular weight organogels [5,6].
Online since: December 2012
Authors: Zulkifli Ahmad, A. Rashid Azura, Y.S. Nurfatihah, A.B.B. Alwi
The porous structure can be tailored easily by varying latex beads [10].
The porous structure prepared using shaker do not show any agglomeration or loss structure of porous silica from agglomeration of silica or latex.
Bunning: submitted to Journal of Material Chemistry (2009)
Haile: submitted to Journal of Material Chemistry (2010)
Lenhoff: submitted to Journal of Material Chemistry (1998)
The porous structure prepared using shaker do not show any agglomeration or loss structure of porous silica from agglomeration of silica or latex.
Bunning: submitted to Journal of Material Chemistry (2009)
Haile: submitted to Journal of Material Chemistry (2010)
Lenhoff: submitted to Journal of Material Chemistry (1998)
Online since: June 2010
Authors: Han Xing Liu, Li Ling Guo, Xian Wu
The X-ray diffraction
patterns and scanning electron microscopy images of the products demonstrate that they crystallize
well with the typical layered structures.
The X-ray diffraction patterns (Figure 1) give reliable experimental evidence of the layered structures of the hybrids.
The X-ray diffraction patterns show that no layered structure forms.
The spectra of the hybrids are quite different from that of MCl2·6H2O, which demonstrates that new band structures construct in the hybrids and that the colors are related not only to the 3d electron structure of M2+ but also to the whole structures.
Solids, Vol.68(9) (2007), p.1663 [5] Zhou Gongdu, Duan Lianyun: The fundamental structural chemistry (third edition, in Chinese), Beijing University Press (2002) [6] Xu Guzhi: Modern Coordination chemistry(in Chinese), Chemical Industry Press, Beijing (1987,) [7] Dai Yadong: Master's thesis, Wuhan University of Technology (2005).
The X-ray diffraction patterns (Figure 1) give reliable experimental evidence of the layered structures of the hybrids.
The X-ray diffraction patterns show that no layered structure forms.
The spectra of the hybrids are quite different from that of MCl2·6H2O, which demonstrates that new band structures construct in the hybrids and that the colors are related not only to the 3d electron structure of M2+ but also to the whole structures.
Solids, Vol.68(9) (2007), p.1663 [5] Zhou Gongdu, Duan Lianyun: The fundamental structural chemistry (third edition, in Chinese), Beijing University Press (2002) [6] Xu Guzhi: Modern Coordination chemistry(in Chinese), Chemical Industry Press, Beijing (1987,) [7] Dai Yadong: Master's thesis, Wuhan University of Technology (2005).