Thermal analysis and FT-IR spectroscopy of synthetic clay mineral mixtures

2020 ◽  
Vol 142 (1) ◽  
pp. 507-518 ◽  
Author(s):  
E. Plevova ◽  
L. Vaculikova ◽  
V. Valovicova
Keyword(s):  
Thermal Analysis ◽  
Ir Spectroscopy ◽  
Clay Mineral ◽  
Ft Ir ◽  
Mineral Mixtures ◽  
Synthetic Clay ◽  
Ft Ir Spectroscopy

Synthesis, crystal structures and characterizations of three new copper(II) complexes including anti-inflammatory diclofenac

2019 ◽  
Vol 75 (4) ◽  
pp. 388-397 ◽  
Author(s):  
Sevim Hamamci Alisir ◽  
Necmi Dege ◽  
Recep Tapramaz
Keyword(s):  
Thermal Analysis ◽  
Ir Spectroscopy ◽  
Magnetic Data ◽  
X Ray Diffraction ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Ft Ir ◽  
Fourier Transform Ir ◽  
Electron Paramagnetic ◽  
Ft Ir Spectroscopy

Three new diclofenac-based copper(II) complexes, namely tetrakis{μ-2-[2-(2,6-dichloroanilino)phenyl]acetato-κ2 O:O′}bis(methanol-κO)copper(II), [Cu2(μ-dicl)4(CH3OH)2] (1), bis{2-[2-(2,6-dichloroanilino)phenyl]acetato-κ2 O,O′}bis(1-vinyl-1H-imidazole-κN 3)copper(II), [Cu(dicl)2(vim)2] (2), and bis{2-[2-(2,6-dichloroanilino)phenyl]acetato-κ2 O,O′}bis(1H-imidazole-κN 3)copper(II), [Cu(dicl)2(im)2] (3) [dicl is diclofenac (C14H10Cl2NO2), vim is 1-vinylimidazole (C5H6N2) and im is imidazole (C3H4N2)], have been synthesized and characterized by elemental analysis, FT–IR spectroscopy, thermal analysis and single-crystal X-ray diffraction. X-ray diffraction analysis shows that complex 1 consists of dimeric units in which the dicl ligand exhibits a bidentate syn,syn-μ2 coordination mode linking two copper(II) centres. Complexes 2 and 3 have mononuclear units with the general formula [Cu(dicl)2 L 2] (L is vim or im) in which the CuII ions are octahedrally coordinated by two L and two dicl chelating ligands. The L and dicl ligands both occupy the trans positions of the coordination octahedron. The different coordination modes of dicl in the title complexes were revealed by Fourier transform IR (FT–IR) spectroscopy. The spin matching between the copper(II) centres in the dimeric [Cu2(μ-dicl)4(CH3OH)2] units was also confirmed by magnetic data to be lower than the spin-only value and electron paramagnetic resonance (EPR) spectra. The thermal properties of the complexes were investigated by thermogravimetric (TG) and differential thermal analysis (DTA) techniques.

Characterisation of Ca– and Al–pectate gels by thermal analysis and FT-IR spectroscopy

2005 ◽  
Vol 340 (16) ◽  
pp. 2510-2519 ◽  
Author(s):  
Tanja Mimmo ◽  
Claudio Marzadori ◽  
Daniela Montecchio ◽  
Carlo Gessa
Keyword(s):  
Thermal Analysis ◽  
Ir Spectroscopy ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Characterization of laser-treated Opuntia using FT-IR spectroscopy and thermal analysis

2012 ◽  
Vol 112 (1) ◽  
pp. 221-224 ◽  
Author(s):  
K. D. Mejías Díaz ◽  
T. Flores Reyes ◽  
L. Ponce Cabrera ◽  
M. Domínguez Sánchez ◽  
M. Arronte García ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Ir Spectroscopy ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Residual Water Content and Water Saturation of Bazhenov Formation Cores

2021 ◽  
Author(s):  
Anton Vasilievich Glotov
Keyword(s):  
Thermal Analysis ◽  
Ir Spectroscopy ◽  
Water Content ◽  
Water Saturation ◽  
Core Material ◽  
Residual Water ◽  
Water Release ◽  
Residual Water Content ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

Abstract The article presents a new method of determining the residual water content and water saturation of the Bazhenov rocks formation (unconventional reservoir), which is contingent on the synchronous thermal analysis integrated with gas FT-IR spectroscopy and mass spectroscopy. The studies were executed on extensive factual core material. The combination of thermal and spectrometric methods for the identification of gases which are released during heating of core samples facilitated to analyze the dynamics of water release and proposed methods of its separation accordingly by the degrees of connectivity.

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