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Sabitova, Z. К.

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XVIII Международная научно-практическая конференция имени профессора Л.П. Кулёва448effeCt Of SOlutION ultraVIOlet raDIatION ON the prOCeSS Of hYDrOgeN eleCtrOOxIDatION Of eleCtrOlYtIC reSIDue WIth pallaDIuMZ.К. SabitovaScientific supervisor – Doctor of Philosophy in Chemistry, professor N.А. KolpakovaLinguistic advisor – PHD in Philology, associate professor А.А. SyskinaTomsk Polytechnic University 634050, Russia, Tomsk, Lenin Avenue 30, zhamilya_sabitova@mail.ruSolid solution is a homogeneous system in which one component's atoms are arranged in a crystal lattice of another component. Hydrogen-pal-ladium solid solution is a specific system. It is con-nected with the ability of palladium to dissolve a huge amount of hydrogen (palladium is able to ab-sorb 734 times the volume of hydrogen at 30 °C) [1].UV radiation of solutions with a wavelength of 200–300 nm has been used for the voltamme-try methods of the analysis to deactivate oxygen in the solutions in the process of electrolytic process. The goal of this research was to study the effect of UV radiation on the process of electrooxidation of hydrogen absorbed by palladium in the process of electroconcentration of palladium and forming a solid solution with it.Fig. 1 shows the voltammetric curves of elec-trooxidation of hydrogen-palladium residue.This hydrogen-palladium residue is precipitat-ed out of 1 M HCl solution on the surface of the graphite electrode at a potential of electrolytic pro-cess of –0,8 V.In the field of potentials from –0,1 to –0,2 V electrooxidation of molecular hydrogen adsorbed on the palladium residues occurs; in the field of potentials from 0,3 to 0,4 V joint electrooxidation of palladium and hydrogen absorbed by palladium occurs [2].With increasing content of palladium in the electrolytic residue the current of anodic peak of molecular hydrogen electrooxidation adsorbed by palladium and the current of anodic peak of palla-dium electrooxidation and atomic hydrogen from electrolytic palladium-hydrogen residue increase. At the same time the potential of uniform elec-trooxidation peak of palladium and hydrogen from palladium-hydrogen solid solution is displaced to the cathodic area of the potentials. Absorption of hydrogen by palladium changes the peak of palladium electrooxidation and increas-es the error of palladium determination with the stripping voltammetry method. It has been established that in the process of ul-traviolet radiation of solution hydrogen leaves the palladium crystal lattice and goes into the solution and therefore it doesn't prevent determination of palladium. Inclusion of UV radiation in the process of pal-ladium electroconcentration allows decreasing the error of palladium determination in the standard samples of copper-nickel ores with the stripping voltammetry method from 30 % to 10 %.fig. 1.		The	voltammetric	curves	of	the	palladium-hydrogen	residue	electrooxidation	on	the	surface	of	carbon-containing	electrodeMedia 1 M HCl, Ee = –0.8 V, te = 60 s, V = 0.06 V/s, СPd: 1–0.4 mg/l, 2–0.6 mg/l, 3–0.8 mg/l, 4–1 mg/l Секция 7.  Химия и химическая технология на иностранном языке449references1.	 Zhukov	 I.I.	 Selected	 Works	 //	 M:	 Publish-ing	House	 of	 the	USSR	Academy	 of	 Sciences,	1952.–	484p.2.	 Mansurov	G.N.,	Peter	O.A.	Electrochemistry	of	thin	metal	 films	 //	Moscow	University	Physics	Bulletin,	2011.–	№4.–	P.131–137.reaCtIONS Of arOMatIC IODINe COMpOuNDS tOWarDS alKalI aND alKalINe earth Metal tetrafluOrOBrOMateSM.A. SamakbaevaScientific supervisors – Ph.D. in Organic Chemistry, Tomsk Polytechnic University, S.P. Zhuravkov; Doctor of Chemical Sciences, Professor of Tomsk Polytechnic University, M.S. Yusubov; National Research Tomsk Polytechnic University 634050, Russia, Tomsk, Lenin Avenue 30, madina.samakbaeva@yandex.ruIntoduction. According to sustainable devel-opment strategy, the main goal of investigators is to find, create and implement environmentally friendly processes and materials. The organic chemistry of hypervalent iodine compounds is a big possibility to make greener the processes in chemical technology. Hypervalent iodine reagents are used extensively in organic synthesis as efficient and environmentally benign oxidizing reagents whose chemical proper-ties in many aspects are similar to the derivatives of heavy metals [1]. In this paper we consider on (difluoroiodo)arenes. (Difluoroiodo)arenes, ArIF2, can be prepared by two general ap-proaches: • oxidative addition of fluorine to iodoarenes using powerful fluorinating re-agents • ligand exchange in iodine (III) compounds, such as ArIO or ArICl2, using HF or SF4 as a source of fluoride anions [2]. Various fluorinating reagents have been used for the fluorination of iodoarenes. A very clean and selective, although relatively expensive, procedure for the preparation of (difluoroiodo)arenes is based on the fluorination of iodoarenes with xenon diflu-oride in dichloromethane in the presence of anhy-drous hydrogen fluoride (Scheme 1) [3, 4]. This method works well for the fluorination of iodoarenes with electrondonating or electron-with-drawing substituents; the latter, however, require longer reaction times. (Difluoroiodo)arenes are hygroscopic and highly hydrolyzable compounds, which makes their separation and crystallization ex-tremely difficult [2]. The current work carries out the possibility of safer and more convenient fluorination method de-velopment, based on reactions of aromatic iodine compounds with alkali and alkaline earth metal tetrafluorobromates. Sobolev V.I, Filimonov V.D. and coworkers described chemical properties of known fluorobromates: KBrF4, CsBrF4, RbBrF4 and the recently described Ba(BrF4)2 in reactions with aromatic compounds and pyridine. They found out strong and selective bromination abilities towards aromatic compounds [5]. However, there is no sys-Scheme 1.		Fluorination	of	iodoarenes	with	xenon	difluoridetable 1. Reaction of Ba(BrF4)2 with hypervalent aro-matic compoundsEntry Substrate Product123456