排序方式: 共有40条查询结果,搜索用时 15 毫秒
21.
T. A. Mastryukova O. I. Artyushin M. P. Pasechnik E. V. Sharova I. L. Odinets V. P. Morgalyuk I. G. Tananaev G. V. Myasoedova B. F. Myasoedov 《Russian Chemical Bulletin》2005,54(11):2540-2544
The composition of complexes formed upon the extraction of UVI and ThIV nitrates with O-n-nonyl(N,N-dibutylcarbamoylmethyl) methyl phosphinate (L) from solutions of nitric acid without additional solvent was determined by 31P NMR spectroscopy. The structures of the complexes formed were studied by IR spectroscopy. Uranium(VI) is extracted from 3 and 5 M solutions of HNO3 as the [UO2(L)2(NO3)2] complex, while thorium(IV) is extracted from 5 M HNO3 as the [Th(L)3(NO3)3]+·NO
3
−
complex. In both cases, ligand L has bidentate coordination. Ligand L contacts with 3 and 5 M nitric acid to form adducts L·HNO3 and L· (HNO3)2, respectively.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2460–2464, November, 2005. 相似文献
22.
V. V. Myasoedova L. R. Lyusova S. V. Kotova V. A. Optov A. N. Shchegolikhin 《Polymer Science Series D》2008,1(3):154-157
Results of comprehensive systematic physicochemical studies of the blends of ethyl cellulose and butadiene-acrylonitrile rubbers are reported. It is shown that the addition of butadiene-acrylonitrile rubbers to ethyl cellulose results in the formation of ethyl cellulose-butadiene-acrylonitrile rubber thermoelastoplastic complexes due to the elastification of the thermoplastic polymorphous structure of ethyl cellulose with enhanced impact strength and heat resistance. 相似文献
23.
O. B. Mokhodoeva G. V. Myasoedova I. V. Kubrakova A. V. Nikulin O. I. Artyushin I. L. Odinets 《Journal of Analytical Chemistry》2010,65(1):12-16
New solid extractants are synthesized with the use of imidazolium and phosphonium ionic liquids for preconcentrating noble
metals. Ionic liquids are selected and conditions for their immobilization on various solid matrices are found. The adsorption
properties of the synthesized solid extractants for platinum(IV) in hydrochloric acid solutions are studied. The solid extractants
obtained by binding 1-hexadecyl-3-methylimidazolium bromide and trihexyltetradecylphosphonium chloride to polymeric matrices
and multiwall carbon nanotubes possess good kinetic properties and selectivity in 1 M HCl, and can be used to preconcentrate
Pt(IV), Pd(II), and Au(III) in combined methods of their determination. 相似文献
24.
O. B. Mokhodoeva D. A. Malikov N. P. Molochnikova E. A. Zakharchenko S. A. Perevalov G. V. Myasoedova Yu. M. Kulyako A. G. Tkachev S. V. Mischenko B. F. Myasoedov 《Russian Journal of General Chemistry》2011,81(9):1972-1979
The review of literature data related to the preparation, properties, and application of carbon nanotubes for sorption recovery
of elements is given. Experimental data on the application of Taunit carbon nanofor radionuclide preconcentration from different
solutions, as well as of Taunit-based solid-phase extractants for recovery of actinides and rare-earth elements from nitric
acid solutions are presented. 相似文献
25.
Myasoedova Yu. V. Garifullina L. R. Nurieva E. R. Ishmuratov G. Yu. 《Russian Journal of Organic Chemistry》2019,55(11):1712-1715
Russian Journal of Organic Chemistry - The reaction of hydrazides of alicyclic capric and aromatic benzoic and p-hydroxybenzoic acids with the peroxide product of non-1-ene ozonolysis was studied.... 相似文献
26.
Ishmuratov G. Yu. Myasoedova Yu. V. Garifullina L. R. Nurieva E. R. Ishmuratova N. M. 《Russian Journal of Applied Chemistry》2019,92(2):244-247
Russian Journal of Applied Chemistry - An improved procedure for preparing 4Z-nonen-1-ol, a key intermediate in the synthesis of sex pheromones of cabbage moth and cotton bollworm, from the cyclic... 相似文献
27.
DS Zhulai SA Bugaychuk GV Klimusheva TA Mirnaya VN Asaula VI Handziuk 《Liquid crystals》2017,44(8):1269-1276
The class of thermotropic ionic liquid crystals (LCs) of the metal alkanoates possesses a number of unique properties, such as intrinsic ionic conductivity, high dissolving ability and ability to form time-stable mesomorphic glasses. These ionic LCs can be used as nanoreactors for the synthesis and stabilisation of different types of nanoparticles (NPs). Thus, some semiconductors, metals and core/shell NPs were chemically synthesised in the thermotropic ionic liquid crystalline phase (smectic A) of the cadmium octanoate (CdC8) and of the cobalt octanoate (CoC8). By applying the scanning electron microscopy, the cadmium and cobalt octanoate composites containing CdS, Au, Ag and core/shell Au/CdS NPs have been studied. NPs’ sizes and dispersion distribution of the NPs’ size in the nanocomposites have been obtained. 相似文献
28.
I. V. Kubrakova G. V. Myasoedova T. V. Shumskaya T. F. Kudinova E. A. Zakharchenko O. B. Mokhodoeva 《Journal of Analytical Chemistry》2005,60(5):475-479
An approach was proposed to analyzing platinum-containing materials. It involves the high-temperature dissolution of samples in acids under the action of microwave radiation, the sorption preconcentration of noble metals on complexing adsorbents, and their instrumental determination after the microwave dissolution of the concentrate.__________Translated from Zhurnal Analiticheskoi Khimii, Vol. 60, No. 5, 2005, pp. 536–541.Original Russian Text Copyright © 2005 by Kubrakova, Myasoedova, Shumskaya, Kudinova, Zakharchenko, Mokhodoeva. 相似文献
29.
O. A. Tyutyunnik G. M. Varshal I. Ya. Koshcheeva I. A. Roshchina G. V. Myasoedova N. I. Shcherbinina N. G. Milovzorov T. V. Shumskaya 《Journal of Analytical Chemistry》2000,55(4):350-353
Sorption of osmium(IV, VI) on complexing sorbents POLYORGS XXIV, POLYORGS 32 M, and POLYORGS 32 V and on the PVA-PGMA-PEPA
sorbent from alkaline and hydrochloric acid solutions is studied. It is demonstrated that equilibrium in systems under study
is attained within 40 min for the POLYORGS XXIV sorbent and within 2.5 h for the POLYORGS 32 V sorbent and that the sorbents
exhibit a sufficiently high sorptive capacity with respect to osmium: from 3.4 to 8 mg of Os(VI) in alkaline solutions and
2.2 mg of Os(IV) in acidic solutions. Optimal conditions of analysis of a concentrate on an EDX-771 energy-dispersive X-ray
fluorescence spectrometer are revealed and, on this basis, a sorption-X-ray fluorescence method that provides the determination
of osmium in a wide concentration range with the detection limit down to 10-6% is developed. 相似文献
30.
G. V. Myasoedova 《Fresenius' Journal of Analytical Chemistry》1991,341(10):586-591
Summary The main characteristics of the complexing sorbents POLYORGS are reviewed. These sorbents contain pyrazole, imidazole, amidoxime, 2-mercaptobenzothiazole, thioglycolanilide and arsenazo groups and exhibit high selectivity in respect to noble, rare-earth and heavy metals. The sorbents POLYORGS are applied for the preconcentration of these metals to be determined in ores, rocks, natural and waste waters, and industrial products. The metal determinations after preconcentration are carried out by means of different instrumental methods (e.g., AAS, XRFA, ICP-AES, NAA) either directly in the sorbent, after elution of the analytes or decomposition of the sorbent. 相似文献