DETERMINATION OF CONCENTRATION AND EXTRACTION OF VANADYLPORPHYRIN COMPLEXES FROM OIL OF OIL-AND-GAS REGION «NORTH BUZACHI»

2021 ◽  
Vol 22 (10) ◽  
pp. 465-471
Author(s):  
Zhannur Myltykbaeva ◽  
◽  
Alexander Anisimov ◽  
Anar Seisembekova ◽  
Madi Smaiyl ◽  
...  
Keyword(s):  
Calculation Method ◽  
Oil And Gas ◽  
Visible Region ◽  
Absorption Bands ◽  
Absorption Area ◽  
Ft Ir ◽  
Intense Absorption ◽  
Strong Deformation ◽  
Gas Bearing

For the extraction of vanadylporphyrin complexes from oils of the oil-and-gas bearing region «North Buzachi» at 20 °C, N-N-Dimethylformamide (DMF) was used as an extractant, which shows a good isolating ability of porphyrin complexes into fractions with increasing the polarity. In the visible region the electronic spectra of metalporphyrin concentrates isolated from oil differ slightly and have two intense absorption bands at 573 nm and 534 nm, corresponding to vanadylporphyrin complexes, and at 550 nm, related to nickel porphyrins. According to the calculation method of graphical extrapolation, using the Lambert-Ber formula, content of nickel porphyrins in the extract is 11 times less than vanadylporphyrins. In the FT-IR spectra of porphyrinates, strong deformation vibrations of C-H-pyrrole fragments were detected in the absorption area 809.27 and 3024.79 cm-1, which indicate the presence of vanadium (IV) porphyrinate in the isolated fraction.

scholarly journals The IR Spectra, Molar Absorptivity, and Integrated Molar Absorptivity of the C76-D2and C84-D2:22 Isomers

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Tamara Jovanović ◽  
Đuro Koruga ◽  
Branimir Jovančićević
Keyword(s):  
Ir Spectra ◽  
Excellent Agreement ◽  
Field Effect Transistors ◽  
Molar Absorptivity ◽  
Ir Absorption ◽  
Organic Field Effect Transistors ◽  
Absorption Bands ◽  
Optical Limiters ◽  
Ft Ir

The FT-IR spectra of the stable C76and C84isomers of D2symmetry, isolated by the new, advanced extraction and chromatographic methods and processes, were recorded by the KBr technique, over the relevant region from 400 to 2000 cm−1, at room temperature. All the observed infrared bands are in excellent agreement with the semiempirical QCFF/PI, DFT, and TB potential calculations for these fullerenes, which is presented in this article, as the evidence of their validity. The molar absorptivityεand the integrated molar absorptivityψof their IR absorption bands were determined and reported together with the relative intensities. Excellent agreement is found between the relative intensities of the main and characteristic absorption maxima calculated fromελand from theψλvalues in adequate integration ranges. These results are significant for the identification and quantitative determination of the C76-D2and C84-D2:22 fullerenes, either in natural resources on Earth and in space or in artificially synthesized and biomaterials, electronic, optical, and biomedical devices, sensors, polymers, optical limiters, solar cells, organic field effect transistors, special lenses, diagnostic and therapeutic agents, pharmaceutical substances in biomedical engineering, and so forth.

Innovative technologies of the prospecting for mineral deposits based on data of fluid inclusions research

2021 ◽  
Vol 3-4 (185-186) ◽  
pp. 92-108
Author(s):  
Ihor Naumko ◽  
Yosyp Svoren
Keyword(s):  
Fluid Inclusions ◽  
Oil And Gas ◽  
New Technologies ◽  
Local Area ◽  
Mineral Deposits ◽  
Natural Phenomenon ◽  
Hydrocarbon Gases ◽  
Local Structures ◽  
Gas Bearing

The innovative approach to the development of prospective technologies (methods) was substantiated on crystallogenic and physicochemical principles of the knowledge of mineral forming environments (fluids) (thermobarogeochemistry – mineralofluidology – fluid inclusions) as a new branch of geological knowledge within the framework of the new scientific direction in the geology – «thermobarometry and geochemistry of gases of veinlet-impregnated mineralization in deposits of oil- and gas-bearing areas and metallogenic provinces» as a natural phenomenon of the Earth’s lithosphere. According to him, the creation of radically new technologies and realization of prospecting for mineral deposits (first of all hydrocarbons and gold) simultaneously with the elucidation of the problem of genesis and synthesis of hydrocarbons at the atomic-molecular level fixed by such defects in the mineral crystals as fluid inclusions. Developed technologies, namely: determination of genesis of hydrocarbon gases; determination of prospects of oil and gas presence of a local area; local forecast of enriched areas of gold ore fields; express determination of potassium ions in inclusions for identification of gold-enriched and barren veinlet formations, – belong to the branch of the exploration geology and geochemistry and are used to ascertain genetic guestions, to solve tasks of the mineralogical-geochemical prediction and prospecting for mineral deposits in the local structures of oil- and gas-bearing areas and metallogenic provinces. The comparison of fluid inclusions of veinlets and host rocks based on the sections of a number of wells has shown the considerable possibilities of the developed technologies and prospects of the usage of thermobarogeochemical-mineralofluidological indicators in the complex with the geochemical and geophysical (petrophysical) methods, data of geological survey, deep-seated drilling while predicting hydrocarbon deposits in the local structures of the sedimentary strata promising for oil and gas and making necessary amendments in the directions of the following geological-prospecting works.

Determination of the Presence of Composite Ions in Catalysts and Composite Ionic Liquids-Catalyzed Isobutane Alkylation

2011 ◽  
Vol 287-290 ◽  
pp. 1666-1670 ◽  
Author(s):  
Ying Nan Cong ◽  
Ying Liu ◽  
Rui Sheng Hu
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ir Spectroscopy ◽  
Catalytic Performance ◽  
Ir Absorption ◽  
Absorption Bands ◽  
Alkyl Groups ◽  
Ft Ir ◽  
Ft Ir Spectroscopy

A novel and efficient method was established to investigate isobutane/2-butene alkylation. In this method FT-IR spectroscopy was used to determine the presence of the composite ion (AlCuCl5-) in the composite ionic liquid (CIL). The trimethylpentane selectivity of the composite ionic liquid for isobutane/2-butene alkylation was also estimated by monitoring the shift of IR absorption bands in the range 1636–1685 cm-1. A detailed study of the alkylation of isobutane /2-butene in CIL media has been conducted using 1-alkyl-3-methylimidazolium halide/X aluminum chloride-y cuprous (I) chloride ([CnMIM]Cl/xAlCl3-yCuCl) encompassing various alkyl groups (n=4:B, butyl-, n=6:H, hexyl-, and n=8: O, octyl-)respectively. The ionic liquids showed higher selectivities of C8 as well as the TMP/DMH ratios in alkylates. The better catalytic performance of CIL can be attributed to the presence of the composite ion in it, and the catalytic performance of the chloroaluminate ionic liquid can be indicated by the 1685 cm-1band of FT-IR spectroscopy.

scholarly journals Phenoxo complexes of copper(II)

1969 ◽  
Vol 47 (4) ◽  
pp. 637-645 ◽  
Author(s):  
J. F. Harrod
Keyword(s):  
Thermal Stability ◽  
Visible Region ◽  
Decomposition Reaction ◽  
Charge Transfer Process ◽  
Absorption Bands ◽  
Ligand Charge Transfer ◽  
Oxidizing Power ◽  
Amine Ligands ◽  
Intense Absorption ◽  
Thermal Stability Of

A series of phenoxo complexes of copper(II) containing a variety of halophenoxo ligands and a variety of amine ligands has been prepared. The thermal stability of the complexes with regard to the decomposition reaction:[Formula: see text]was found to be lower with those ligands, L, which increase the oxidizing power of the copper(II) and vice versa.The intense absorption bands in the visible region exhibited by these complexes have been assigned to a metal-to-ligand charge transfer process.

FT-IR Transmission Spectroscopy for Quantitation of Ammonium Bisulfate in Fine-Particulate Matter Collected on Teflon® Filters

1994 ◽  
Vol 48 (6) ◽  
pp. 702-705 ◽  
Author(s):  
K. J. Krost ◽  
W. A. McClenny
Keyword(s):  
Limit Of Detection ◽  
Fine Particulate Matter ◽  
Ambient Air ◽  
Absorption Bands ◽  
Chemical Measurements ◽  
Before And After ◽  
Ir Transmission ◽  
Ft Ir ◽  
Ammonium Bisulfate

A quantitative measurement method for the determination of fine-particle bisulfate in ammonium bisulfate collected from the ambient air onto Teflon® filters is described. Infrared absorbance measurements of the Teflon® filters are made before and after particle collection. Subtraction of the two spectra reveals the absorbance spectrum of the particles. The presence of bisulfate is identified by characteristic and unique spectral features including prominent absorption bands at 1050 and 870 cm−1. The integrated band absorbance at 870 cm−1 is used for quantitation. Wet chemical measurements of sulfate and hydrogen ion in synthetically generated ammonium bisulfate standards are used in calibration. The lower limit of detection for the bisulfate ion is 150 nanomoles. This amount corresponds to the ammonium bisulfate which would be collected from an air volume containing 1.2-microgram/m3 samples for 24 hours at 10.0 L/min. This method provides a specific, nondestructive, direct measurement of ammonium bisulfate. As such, the method has distinct advantages over indirect methods for the determination of bisulfate ion.

DETERMINATION OF MOBILE WATER IN RESERVOIRS OF ACHIMOV THICKNESS

2020 ◽  
pp. 34-39
Author(s):  
S.V. Mukhidinov ◽  
E.O. Belyakov
Keyword(s):  
Lower Cretaceous ◽  
Oil And Gas ◽  
Geological Structure ◽  
Geological Exploration ◽  
Mobile Water ◽  
Complex Geological Structure ◽  
Gas Bearing ◽  
Low Porosity

The rocks of the Achimov deposits are known for low porosity, permeability and poor connectivity of the pores. They belong to the Lower Cretaceous complex and have a complex geological structure. Oil and gas-bearing objects in the Achimov deposits belong to the non-anticlinal type of traps and are confined to clinoforms. The question of studying the volume of mobile water in the rocks of the Achimov is important, but is still open. The success of geological exploration and the risks of production drilling depend on the effectiveness of solving this problem.

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