Decomposition of Copper Compounds in X-Ray Photoelectron Spectrometers

1984 ◽  
Vol 38 (5) ◽  
pp. 729-734 ◽  
Author(s):  
Joseph C. Klein ◽  
Chung Ping Li ◽  
David M. Hercules ◽  
James F. Black
Keyword(s):  
Radiative Heating ◽  
Copper Salts ◽  
X Ray ◽  
Copper Compounds ◽  
Monochromatic Source

Six Cu compounds were analyzed in three different x-ray photoelectron spectrometers (AEI-ES200, LHS-10, and HP-5950A), each equipped with a different type of AI Kα x-ray source, to determine the cause of reduction of copper salts in photoelectron spectrometers The monochromatic source used in the HP 5950A spectrometer did not cause sample degradation Significant sample degradation was observed in the AEIES200, which was attributed to the radiative heating from the x-ray gun The LHS-10 spectrometer, which utilizes a water-cooled x-ray housing, afforded significantly less sample reduction than the AEI ES200 spectrometer

X-ray photoelectron spectroscopy of copper compounds

1972 ◽  
Vol 24 (4) ◽  
pp. 861-877 ◽  
Author(s):  
D.C. Frost ◽  
A. Ishitani ◽  
C.A. McDowell
Keyword(s):  
Photoelectron Spectroscopy ◽  
X Ray ◽  
Copper Compounds

Binuclear copper(II) complexes of the tetradentate ligand 1,4-di(2′-pyridyl)aminophthalazine: some novel five-coordinate derivatives

1969 ◽  
Vol 47 (22) ◽  
pp. 4141-4152 ◽  
Author(s):  
L. K. Thompson ◽  
V. T. Chacko ◽  
J. A. Elvidge ◽  
A. B. P. Lever ◽  
R. V. Parish
Keyword(s):  
Room Temperature ◽  
Principal Series ◽  
Magnetic Data ◽  
Binuclear Copper ◽  
Neutral Form ◽  
Deprotonated Form ◽  
Copper Salts ◽  
X Ray ◽  
Anionic Ligand ◽  
Aromatic Carboxylate

Reaction of the title ligand (L) with copper salts leads to the formation of three principal series of compounds, LCu2X3(OH)•H2O (X = Cl, Br), LCu2(RCO2)3, and LCu2(RCO2)4, where RCO2 represents various aliphatic and aromatic carboxylate species. Magnetic data, electronic spectroscopic data both at room temperature and at −196 °C, infrared spectra, and microanalytical data are correlated to reveal that these complexes contain a binuclear copper-copper system in which the copper atoms are 5-coordinate and square pyramidal. Brief details are presented of an X-ray structural analysis of the chloride complex confirming the structure proposed.The ligand forms complexes both in its neutral form and in an anionic deprotonated form. The ultraviolet spectra of the complexes distinguish these modes of bonding. The electronic spectra are discussed in terms of the 5-coordinate square pyramidal copper chromophore deemed to be present. In the complex L2Cu, the copper atom has a trigonally distorted 6-coordinate environment with tridentate anionic ligand.

A study of copper compounds by X-ray absorption spectroscopy

1980 ◽  
pp. 837 ◽  
Author(s):  
Thangamuthu Murugesan ◽  
Prabhakar R. Sarode ◽  
Jagannatha Gopalakrishnan ◽  
C. N. Ramachandra Rao
Keyword(s):  
Absorption Spectroscopy ◽  
X Ray ◽  
Copper Compounds ◽  
X Ray Absorption

X-Ray Resonant Raman Spectra of Several Copper Compounds

1994 ◽  
Vol 63 (5) ◽  
pp. 1713-1720 ◽  
Author(s):  
Yasuo Udagawa ◽  
Hisashi Hayashi ◽  
Kazuyuki Tohji ◽  
Takanori Mizushima
Keyword(s):  
Raman Spectra ◽  
X Ray ◽  
Copper Compounds ◽  
Resonant Raman

Cu Kβ2,5 X-ray emission spectroscopy as a tool for characterization of monovalent copper compounds

2012 ◽  
Vol 27 (11) ◽  
pp. 1882 ◽  
Author(s):  
J. R. Vegelius ◽  
K. O. Kvashnina ◽  
M. Klintenberg ◽  
I. L. Soroka ◽  
S. M. Butorin
Keyword(s):  
Emission Spectroscopy ◽  
X Ray ◽  
Copper Compounds

Characterization of Green Synthesized Copper Nanoparticles Stabilized by Ocimum Leaf Extract

2014 ◽  
Vol 1704 ◽  
Author(s):  
Sathiraju Annapurna ◽  
Yathapu Suresh ◽  
Bojja Sreedhar ◽  
Ganghishetti Bhikshamaiah ◽  
A.K. Singh
Keyword(s):  
Electron Microscopy ◽  
Copper Nanoparticles ◽  
Leaf Extract ◽  
Chemical Reduction ◽  
Ocimum Sanctum ◽  
X Ray Diffraction ◽  
Copper Salts ◽  
Visible Absorption ◽  
X Ray ◽  
Average Size

ABSTRACTCopper nanoparticles are synthesized successfully through chemical reduction of different copper salts stabilized by Ocimum Sanctum Leaf extract, a natural biopolymer. The resulting copper nanoparticles are characterized by using UV Visible Absorption Spectrometer, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Small Angle X-ray Scattering (SAXS) and Fourier Transform Infrared Spectroscopy (FTIR) experiments. Copper nanoparticles prepared display an absorption peak at around 558 nm. X-ray diffraction analysis shows that the particles are FCC crystalline. SEM and TEM display the formation of copper nanoparticles with an average size of 10 nm. The SAXS studies demonstrate the formation of spherical nanoparticles with bimodal size distribution. The FTIR spectrum analysis has confirmed the presence of functional groups of stabilizer Ocimum Sanctum leaf extract in capping the copper nanoparticles.

scholarly journals Determining patterns in the use of finishing formulations for trimming the Crust leather

2021 ◽  
Vol 1 (6 (109)) ◽  
pp. 57-63
Author(s):  
Tymofiі Lуpskyі ◽  
Nataliia Pervaia ◽  
Olena Okhmat ◽  
Olena Mokrousova ◽  
Аntonina Babych
Keyword(s):  
Raw Materials ◽  
Front Surface ◽  
Blue Color ◽  
Chromatography Method ◽  
X Ray ◽  
Copper Compounds ◽  
Wet Friction ◽  
Cobalt Compounds ◽  
Elementary Chemical ◽  
Iron Chromium

This paper has considered the possibility of using new finishing formulations to finish the Crust leather, manufactured from cattle raw materials aimed to finish shoes and leather garments.The quality indicators of finishing formulations and their elementary chemical composition have been investigated. It was found that the finishing formulations possess a high covering capacity due to the presence of mineral pigments in their composition. X-ray fluorescent analysis has proven that the presence of chromium pigments and copper compounds renders the green color to the composition; the compounds of cobalt, copper, iron, chromium ‒ blue color; cobalt compounds ‒ reddish-brown color.It has been established that the finishing formulations are resistant to the effect of electrolytes of different nature over a wide pH interval, from 2 to 11.When determining the uniformity of the composition by using a chromatography method involving fan-shaped paper, it was found that the composition of blue has a pronounced purple hue, of reddish-brown – red.The effectiveness of the use of finishing formulations to finish the Crust leather has been proven by determining the indicators of its quality. The finishing formulations give the Crust high resistance to dry (exceeding 500 rotations) and wet friction (exceeding 150 rotations), multiple bending (exceeding 50,000 rotations), the effect of water (2 to 5 points), and organic solvents (2 to 4 points). At the same time, the finishing formulations are characterized by rapid diffusion into the structure of the leather with a natural front surface with the simultaneous provision of specific properties to it. Specifically: water-repelling properties (hydrophobicity), shine, wax grain, matte, saturated homogeneous color. The leather with the introduced finishing formulations does not require fixing the resulting coating with water-based varnish.It is recommended to use the finishing formulations in the production of Crust leather shoe top by applying them onto the surface by spraying or using a brush to create the desired effect

Komplexbildung und Metallextraktion mit heterocyclischen β-Dicarbonylverbindungen im Vergleich. Struktur von 3-Phenyl-4-benzoyl-isoxazol-5-on / Complex Formation and Metal Extraction with Heterocyclic β-Dicarbonyl Compounds as Comparison. Structure of 3-Phenyl-4-benzoyl-5-isoxazolone

1995 ◽  
Vol 50 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Erhard Uhlemann ◽  
Alwin Friedrich ◽  
Gerald Hinsche ◽  
Wulfhard Mickler ◽  
Uwe Schilde
Keyword(s):  
Molecular Structure ◽  
Solid State ◽  
Complex Formation ◽  
Stability Constants ◽  
Metal Extraction ◽  
Crystal Data ◽  
Dicarbonyl Compounds ◽  
Space Group ◽  
X Ray ◽  
Copper Compounds

Acid constants and stability constants of nickel and zinc chelates with 2-thenoyltrifluoroacetone, dibenzoylmethane, 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone and 3-phenyl-4-benzoyl-5-isoxazolone were compared. The extraction of copper was studied. Thermoanalytic measurements were made using the ligands and their copper compounds in the solid state. The molecular structure of 3-phenyl-4-benzoyl-5-isoxazolone was determined by X-ray analysis. Crystal data: a = 874,7(2), b = 1959,2(7), c = 897,38(7) pm; β = 101,030(7)°; space group P 121/c 1; Z = 4; R = 0,043; 1920 observed, unique reflexions.

Deinking flexographic-printed papers: Destabilization of flexographic ink dispersions with copper compounds

TAPPI Journal ◽  
2013 ◽  
Vol 12 (11) ◽  
pp. 29-35 ◽  
Author(s):  
ERIC O. FERNANDEZ ◽  
KEVIN T. HODGSON
Keyword(s):  
Colloidal Dispersions ◽  
Cupric Chloride ◽  
Copper Salts ◽  
Critical Coagulation Concentration ◽  
Flocculation Mechanism ◽  
Ph Values ◽  
Copper Compounds ◽  
Printing Inks ◽  
Flexographic Printing ◽  
Extreme Stability

Flexographic printing inks form electrosterically stabilized colloidal dispersions in water that display extreme stability at the alkaline pH values of most wastepaper deinking systems. A significant amount of U.S. newspapers are now printed using water-based flexographic inks, and the residual inks from these sources are problematic to remove in deinking plants. A successful flocculant for flexographic ink particles used in deinking plant filtrate streams requires that both the electrostatic and steric components of colloidal stabilization be eliminated simultaneously. The present study shows the advantageous characteristics of cupric chloride in achieving rapid flocculation of flexographic inks. Flocculation experiments were performed with a model ink as well as a mixture of offset and flexographic inks from recycled newspapers. The critical coagulation concentration of cupric chloride has been compared to other chloride, nitrate, and copper salts. Copper(II) chloride has been found to be significantly more effective than other such salts in achieving destabilization and aggregation of flexographic ink particles. A possible flocculation mechanism of flexographic ink particles by cupric chloride is presented.

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