Improved Synthesis and Characterization of 2-(Dinitromethylene)-1- nitro-1,3-diazacyclopentane

2014 ◽  
Vol 69 (1) ◽  
pp. 77-82 ◽  
Author(s):  
Xu Zhibin ◽  
Cui Kejian ◽  
Wang Peng ◽  
Lin Zhihui ◽  
Meng Zihui ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Crystal Morphology ◽  
Synthesis And Characterization ◽  
Scanning Calorimetry ◽  
New Approach ◽  
Explosive Performance ◽  
Crystal Density ◽  
Scanning Electron

A new approach is described to synthesize 2-(dinitromethylene)-l-nitro-1,3-diazacyclopentane (4). 2-(Dinitromethylene)-1,3-diazacyclopentane (1) was synthesized first by the nucleophilic substitution of ethylenediamine and 1,1-diamino-2,2-dinitroethylene (FOX-7) catalyzed by Mg(OAc)2, then 1 was transformed to 4 through nitration, reduction and hydrolysis. The crystal morphology of 4 was investigated by scanning electron microscopy (SEM). Compound 4 was also characterized by IR, NMR, MS and elemental analysis, and by thermogravimetry (TG) and differential scanning calorimetry (DSC), which revealed that 4 decomposes at 126 °C. The explosive performance of 4 was calculated using the VLW equation. The crystal density of 4 was determined as 1.79 g ·cm-3. The experimental results indicate that 4 is sensitive towards impact and spark stimuli, but insensitive to friction.

Hydrothermal Synthesis and Characterization of BiFeO3 Polyhedral Crystallites

2012 ◽  
Vol 174-177 ◽  
pp. 508-511
Author(s):  
Lin Lin Yang ◽  
Yong Gang Wang ◽  
Yu Jiang Wang ◽  
Xiao Feng Wang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Transmission Electron ◽  
Scanning Electron

BiFeO3 polyhedrons had been successfully synthesized via a hydrothermal method. The as-prepared products were characterized by power X-ray diffraction (XRD) pattern, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The possible mechanisms for the formation of BiFeO3 polyhedrons were discussed. Though comparison experiments, it was found that the kind of precursor played a key role on the morphology control of BiFeO3 crystals.

Synthesis and Characterization of Gold Nanoparticles Synthesized in Gel and Paper by Electrolysis

2019 ◽  
Vol 824 ◽  
pp. 163-167
Author(s):  
Pema Dechen ◽  
Ekasith Somsook
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Gold Nanoparticles ◽  
Room Temperature ◽  
Synthesis And Characterization ◽  
Visible Spectroscopy ◽  
Gold Leaf ◽  
Uv Visible ◽  
Scanning Electron

In this report, synthesis and characterization of gold nanoparticles (AuNPs) from gold leaf by electrolysis in two different media (gel and paper) in presence of sodium chloride (NaCl), glucose (C6H12O6) and polyvinyl pyrrolidone (PVP) at room temperature were investigated. Graphite was used as two electrodes, NaCl was used as an electrolyte, C6H12O6 was used as reducing agent and PVP was used as stabilizer to control the aggregation of the nanoparticles. UV-Visible spectroscopy (UV-Vis) and scanning electron microscopy (SEM) were used to confirm the characteristics and morphologies of the synthesized AuNPs.

Synthesis and Characterization of Al2O3 by Using a Combustion Synthesis Method

2012 ◽  
Vol 545 ◽  
pp. 169-171 ◽  
Author(s):  
Mawar Hazwani Jasimin ◽  
Nurhanna Badar ◽  
Rusdi Roshidah ◽  
Norlida Kamarulzaman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Metal Oxides ◽  
Annealing Temperature ◽  
Synthesis Method ◽  
Combustion Method ◽  
Synthesis And Characterization ◽  
Size And Morphology ◽  
Scanning Electron

Aluminium oxide is one of the metal oxides that can exist in many phases such as α, θ, η etc. All the phases obtained are affected by annealing temperature and synthesis route. In this research the Al2O3 powders were synthesized by the combustion method using triethanolamine as fuels. A pure η phase as well as a mixed α and η phases were obtained. The size and morphology of Al2O3 particles were studied using scanning electron microscopy (SEM).

Sol-Gel Synthesis and Characterization of BiFeO3-PbTiO3 Thin Films

2007 ◽  
Vol 997 ◽  
Author(s):  
Ashish Garg ◽  
Soumya Kar ◽  
Anju Dixit ◽  
D C Agrawal
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Scanning Electron Microscopy ◽  
Sol Gel ◽  
Grazing Incidence ◽  
Synthesis And Characterization ◽  
Sol Gel Synthesis ◽  
Polycrystalline Form ◽  
Scanning Electron

AbstractIn this work, we report on the synthesis and characterization of thin films of (BiFeO3)1−x (PbTiO3)x (BFPT) solid solutions of compositions around morphotropic phase boundary (MPB) grown on platinized silicon (111) Pt/TiO2/SiO2/Si substrate by sol-gel based spin coating technique. The films were post-annealed at 700 and 750°C for 1 h in air. Morphological analysis of the films was carried out by scanning electron microscopy. Grazing incidence X-ray diffractometry revealed the perovskite structure of the films and peaks suggested the presence of rhombohedral structured pure BFPT phase in polycrystalline form. Scanning electron microscopy suggested that films annealed at 750degC had a denser microstructure as compared to those at 700°C. The room temperature dielectric constant of the films with composition of BF:PT :: 75:25 was measured to be ∼1200 at a frequency of 100 kHz.

Darstellung und Charakterisierung des Silber(I,II,III)-oxidclathrates Ag7O8HCO3 / Synthesis and Characterization of the Silver(I,II,III) Oxide Clathrate Ag7O8HCO3

2000 ◽  
Vol 55 (9) ◽  
pp. 882-886 ◽  
Author(s):  
Martin Jansen ◽  
Sascha Vensky
Keyword(s):  
Electron Microscopy ◽  
Thermal Analysis ◽  
Scanning Electron Microscopy ◽  
Magnetic Susceptibility ◽  
Solid State Nmr ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Scanning Electron

The silver(I,II,III) oxide clathrate Ag7O8HCO3 was synthesized by anodic oxidation of silver(I) in a suspension of Ag2CO3 in an aqueous AgF solution. The title compound was characterized by single crystal X-ray diffraction (cubic, Fm3̄m, a = 9.8085(3) Å, Z = 4), scanning electron microscopy, thermal analysis, IR spectroscopy, 1H-solid state-NMR and measurement of the magnetic susceptibility

Synthesis and Characterization of Andalusite/Polyaniline Composites

2011 ◽  
Vol 675-677 ◽  
pp. 295-298
Author(s):  
Liang Shao ◽  
Jian Hui Qiu ◽  
Ming Zhu Liu ◽  
Hui Xia Feng ◽  
Guo Hong Zhang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Scanning Electron Microscopy ◽  
Synthesis And Characterization ◽  
Conducting Phase ◽  
Polyaniline Composites ◽  
Inorganic Substrate ◽  
Thermal Stability Of ◽  
Scanning Electron

New types of conducting composites using andalusite as an inorganic substrate and polyaniline as the conducting phase were prepared. The composites exhibited conductivities in the 0.14-2.08 S/cm range, depending on the amount of polyaniline. The thermal stability of andalusite/polyaniline composites were studied by thermogravimetric analysis. The resulting composites were also characterized by using FTIR spectroscopy and scanning electron microscopy.

scholarly journals Synthesis and characterization of four new lanthanide complexes coordinate with β-diketone ligands and 1,10-phenanthroline or 2,2-dipyridine

2020 ◽  
Vol 9 (11) ◽  
pp. e45791110207
Author(s):  
Yuri Johann Vilar de Brito ◽  
Crislene Rodrigues da Silva Morais ◽  
Yohanna Jamilla Vilar de Brito ◽  
Daniella Cibele Bezerra
Keyword(s):  
Electron Microscopy ◽  
Lanthanide Complexes ◽  
Synthesis And Characterization ◽  
Direct Reaction ◽  
Scanning Calorimetry ◽  
Solubility Test ◽  
Microscope Images ◽  
Scanning Electron

In this work the complexes Ln(β-dik)3L (where Ln= Nd+3 e Er+3, β-dik= 4,4,4-trifluoro-1-phenyl-1,3-butanedione (Btfa) and L= 1,10-Phenanthroline (Phen) or 2,2’-Bipyridyl (Bipy)), were synthesized from the direct reaction of LnCl3 with β-diketone and the ligands. The purpose was to create new lanthanide complexes with perspectives of use in markers. After the syntheses, the complexes were characterized by Solubility Test, Scanning Electron Microscopy (SEM) and the thermal properties of compounds were studied using Thermogravimetry Analisys (TGA), Differential Scanning Calorimetry (DSC) and Determination of Melting/Decomposition Intervals. Based on the verified properties, the solubility test found that the complexes are not soluble in chloroform and water. The microscope images showed an excellent crystallization of the complexes. The complexes are stable up to 120°C, after this temperature they show a peak in the DSC referring to the fusion and the beginning of decomposition. The values of activation energy suggests the following decreasing order of stability: Er(Btfa)3Phen>Nd(Btfa)3Phen>Er(Btfa)3Bipy>Nd(Btfa)3Bipy.

Synthesis and Characterization of NiO Doped SnO2 Nano-Flowers

2013 ◽  
Vol 575-576 ◽  
pp. 58-60
Author(s):  
Wei Ping Tang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Infrared Spectrum ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Hydrothermal Route ◽  
X Ray ◽  
Scanning Electron

In this present work, a new method for preparing NiO doped SnO2 nanoflowers by hydrothermal route is suggested. The composition and microstructure of samples were characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and Fourier transform infrared spectrum (FTIR). Moreover, a possible formation mechanism was discussed.

Synthesis and characterization of conducting copolymer of (N 1,N 3-bis(thiophene-3-ylmethylene)benzene-1,3-diamine-co-3,4-ethylenedioxythiophene)

2010 ◽  
Vol 64 (1) ◽  
Author(s):  
Altuğ Kümbül ◽  
Ersen Turaç ◽  
Tuğba Dursun ◽  
Ertuğrul Şahmetlioğlu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Nuclear Magnetic Resonance ◽  
Cyclic Voltammetry ◽  
Chemical Structure ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
Electrochemical Copolymerization ◽  
Scanning Electron

AbstractElectrochemical copolymerization of N 1,N 3-bis(thiophene-3-ylmethylene)benzene-1,3-diamine (TMBA) with 3,4-ethylenedioxythiophene (EDOT) was carried out in a CH3CN/LiClO4 (0.1 M) solvent-electrolyte via potentiodynamic electrolysis. Chemical structure of the monomer was determined by nuclear magnetic resonance (1H NMR) and Fourier transform infrared (FTIR) spectroscopy. The resulting copolymer was characterized by cyclic voltammetry (CV), FTIR, scanning electron microscopy (SEM), and thermogravimetry analyses (TGA). Conductivity measurements of the copolymer and PEDOT (poly(3,4-ethylenedioxythiophene)) were carried out by the four-probe technique.

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