Pub Date : 2020-05-30DOI: 10.18524/2304-0947.2020.2(74).204386
A. Chebotarev, E. M. Rakhlytskaya, D. Snigur, T. M. Scherbakova, K. Bevziuk, K. Snihur
In this paper, the ionization constants (pKa) of some nitrogen-containing organic bases (morfoline, piperidine and benzylamine) in water-ethanol and water-acetone media at various concentrations of organic solvent in the system has been determined by the potentiometric titration method. It was established that the value of pKa of nitrogen-containing organic bases in aqueous-organic media naturally decreases with increasing content of organic solvent in the system. It was shown that their nature (aromatic or heterocyclic) and the physico-chemical properties of the medium are significantly influenced by the nature and degree of change in the electron donor ability of the nitrogen-containing organic bases studied It should be noted that for the studied nitrogen-containing organic bases (morfoline, piperidine and benzylamine), when passing from an aqueous medium to an organic one (ethanol or acetone), the pKa values naturally decrease with an increase in the content of the organic solvent in the system. In general, in the transition from an aqueous medium to an organic one (ethanol or acetone), a change in pKa can reach 2.43 units. It was established that the dependence of the values of pKa of nitrogen-containing organic bases which were determinate via potentiometric titration method on the inverse of the dielectric constant of water-ethanol and water-acetone solutions tends to be linear, consistent with Izmailov’s theory. Thus, we can conclude that the change in the ratio of the mixed solvent components and, as a result, in general, dielectric permeability of the medium does not lead to a significant change in the solvation characteristics of the nitrogen-containing organic bases studied.
{"title":"IONIZATION OF SOME NITROGEN-CONTAINING ORGANIC BASES IN WATER-ETHANOL AND WATER-ACETONE MEDIA","authors":"A. Chebotarev, E. M. Rakhlytskaya, D. Snigur, T. M. Scherbakova, K. Bevziuk, K. Snihur","doi":"10.18524/2304-0947.2020.2(74).204386","DOIUrl":"https://doi.org/10.18524/2304-0947.2020.2(74).204386","url":null,"abstract":"In this paper, the ionization constants (pKa) of some nitrogen-containing organic bases (morfoline, piperidine and benzylamine) in water-ethanol and water-acetone media at various concentrations of organic solvent in the system has been determined by the potentiometric titration method. It was established that the value of pKa of nitrogen-containing organic bases in aqueous-organic media naturally decreases with increasing content of organic solvent in the system. It was shown that their nature (aromatic or heterocyclic) and the physico-chemical properties of the medium are significantly influenced by the nature and degree of change in the electron donor ability of the nitrogen-containing organic bases studied It should be noted that for the studied nitrogen-containing organic bases (morfoline, piperidine and benzylamine), when passing from an aqueous medium to an organic one (ethanol or acetone), the pKa values naturally decrease with an increase in the content of the organic solvent in the system. In general, in the transition from an aqueous medium to an organic one (ethanol or acetone), a change in pKa can reach 2.43 units. It was established that the dependence of the values of pKa of nitrogen-containing organic bases which were determinate via potentiometric titration method on the inverse of the dielectric constant of water-ethanol and water-acetone solutions tends to be linear, consistent with Izmailov’s theory. Thus, we can conclude that the change in the ratio of the mixed solvent components and, as a result, in general, dielectric permeability of the medium does not lead to a significant change in the solvation characteristics of the nitrogen-containing organic bases studied.","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90294511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-30DOI: 10.18524/2304-0947.2020.2(74).199553
S. Konovalova, A. Avdeenko
{"title":"RЕACTION OF O-ARYL(METHYL)SULFONATES OF 1,4-QUINONE MONOOXIMES WITH HYDRAZINES","authors":"S. Konovalova, A. Avdeenko","doi":"10.18524/2304-0947.2020.2(74).199553","DOIUrl":"https://doi.org/10.18524/2304-0947.2020.2(74).199553","url":null,"abstract":"","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77718291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-30DOI: 10.18524/2304-0947.2020.2(74).204381
V. Zinchenko, I. Magunov, G. Volchak, O. V. Mozkova, S. Kuleshov
A fundamentally new type of materials – composites based on the Germanium- metal oxide systems – for applying interference coatings of IR spectral optics has been developed. The formation of a pair of volatile substances (one of them being Germanium monoxide), and their recombination is characteristic of compounds of Germanium and some p-metals (In, Ge, Sn), which have different volatilities in the lower and higher oxidation states. The introduction of a stabilizing additive B 2 O 3 to systems Ge – In 2 O 3 (-GeO 2 , -SnO 2 ) is proposed. It has been shown that between B 2 O 3 , which has acidic properties and In 2 O 3 , mainly of a basic nature, an interaction occurs that results in the formation of a complex oxide compound, Indium orthoborate of the InBO3 composition. This fact is confirmed by X-ray phase analysis and IR transmission spectroscopy. It has been established that B 2 O 3 addition not only affects the phase composition of the samples, but also the position of the In 2 O 3 vibrational bands. In turn, the presence of elemental Germanium in the system results in an increase in InBO3 content, the reason for which remains unclear. At the same time, the formation of ternary compounds in Ge – GeO 2 (SnO 2 ) – B 2 O 3 systems has not been established. Most likely, glass formation takes place in the first of the systems, while in the system with SnO2, immiscibility in the liquid phase and the formation of phases of unknown composition are visually observed. Partial systems GeO 2 (SnO 2 ) – B 2 O 3 during evaporation in vacuum destroy the material of the evaporator due to very high temperatures of the processes. On the contrary, the Ge- In 2 O 3 – B 2 O 3 system was successfully evaporated and a fairly strong coating was obtained. Presumably the interaction between Germanium, metal oxide and B 2 O 3 results in the formation of complex oxides such as borates of metals in various oxidation states, which stabilizes the evaporation process in vacuum and condensation of the coating with the necessary optical and operational properties.
{"title":"COMPOSITES OF THE SYSTEMS GERMANIUM – METAL OXIDE – BORON OXIDE AS PROSPECTIVE MATERIALS FOR INTERFERENCE OPTICS OF AN IR SPECTRUM RANGE","authors":"V. Zinchenko, I. Magunov, G. Volchak, O. V. Mozkova, S. Kuleshov","doi":"10.18524/2304-0947.2020.2(74).204381","DOIUrl":"https://doi.org/10.18524/2304-0947.2020.2(74).204381","url":null,"abstract":"A fundamentally new type of materials – composites based on the Germanium- metal oxide systems – for applying interference coatings of IR spectral optics has been developed. The formation of a pair of volatile substances (one of them being Germanium monoxide), and their recombination is characteristic of compounds of Germanium and some p-metals (In, Ge, Sn), which have different volatilities in the lower and higher oxidation states. The introduction of a stabilizing additive B 2 O 3 to systems Ge – In 2 O 3 (-GeO 2 , -SnO 2 ) is proposed. It has been shown that between B 2 O 3 , which has acidic properties and In 2 O 3 , mainly of a basic nature, an interaction occurs that results in the formation of a complex oxide compound, Indium orthoborate of the InBO3 composition. This fact is confirmed by X-ray phase analysis and IR transmission spectroscopy. It has been established that B 2 O 3 addition not only affects the phase composition of the samples, but also the position of the In 2 O 3 vibrational bands. In turn, the presence of elemental Germanium in the system results in an increase in InBO3 content, the reason for which remains unclear. At the same time, the formation of ternary compounds in Ge – GeO 2 (SnO 2 ) – B 2 O 3 systems has not been established. Most likely, glass formation takes place in the first of the systems, while in the system with SnO2, immiscibility in the liquid phase and the formation of phases of unknown composition are visually observed. Partial systems GeO 2 (SnO 2 ) – B 2 O 3 during evaporation in vacuum destroy the material of the evaporator due to very high temperatures of the processes. On the contrary, the Ge- In 2 O 3 – B 2 O 3 system was successfully evaporated and a fairly strong coating was obtained. Presumably the interaction between Germanium, metal oxide and B 2 O 3 results in the formation of complex oxides such as borates of metals in various oxidation states, which stabilizes the evaporation process in vacuum and condensation of the coating with the necessary optical and operational properties.","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"123 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86429977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-30DOI: 10.18524/2304-0947.2020.2(74).204385
N. Fed’ko
The literary data concerning preparation methods and spectral properties of cyclocondensation products of 1,8-naphthalic anhydrides with aromatic and aliphatic 1,2-diamines and their use as luminescent materials have been summarized. The reaction of 1,8-naphthalic anhydrides with ortho -phenylenediamine results in the formation of 1,8-naphthoylene-1’,2’-benzimidazoles, which are widely used as materials for luminescent flaw detection, for synthesis of polymers with luminescent color, in organic light emitting diodes, as luminescent sensors for cations of various metals. Moreover, their cytotoxic activity is studied in relation to cells of various tumors. Acenaphthoquinone or 8-formyl-1-naphthoic acid can also be used as starting materials for synthesis of 1,8-naphthoylene-1’,2’-benzimidazoles. The spectral properties of 1,8-naphthoylene-1’,2’-benzimidazoles can be varied by the substituent introduction to naphthalene or/and phenyl moieties leading to luminescent materials with blue, green-yellow or red luminescence. Reaction of 4-substituted naphthalic anhydrides with o -phenylenediamine results in mixture of two constitutional isomers due to nonequivalence of two carbonyl groups in starting anhydride. The isomer ratio remains unchanged provided that syntheses are carried out under the same conditions, therefore the luminescent properties of such isomer mixtures are constant. 1,8-Naphthoylene-1’,2’-benzimidazoles with electron donating groups in positions 4 or 5 of naphthalene ring can be successfully obtained by nucleophilic aromatic substitution of halogen by amine or alcoholate. The introduction of electron donating substituents to positions 4 or 5 of naphthalene ring results in bathochromic shift of absorption and emission maxima compared to unsubstituted 1,8-naphthoylene-1’,2’-benzimidazole, corresponding shift is 10-20 nm larger for 5-isomer than for 4-isomer. There are few examples of applying amines other than o -phenylenediamine for cyclocondensation with naphthalic anhydrides, for instance naphthalene-2,3-diamine and ethylenediamine were used as starting materials.
{"title":"SYNTHETIC METHODS, PROPERTIES AND APPLICATION OF CONDENSATION PRODUCTS OF 1,8-NAPHTHALIC ANHYDRIDES WITH 1,2-DIAMINES (A REVIEW)","authors":"N. Fed’ko","doi":"10.18524/2304-0947.2020.2(74).204385","DOIUrl":"https://doi.org/10.18524/2304-0947.2020.2(74).204385","url":null,"abstract":"The literary data concerning preparation methods and spectral properties of cyclocondensation products of 1,8-naphthalic anhydrides with aromatic and aliphatic 1,2-diamines and their use as luminescent materials have been summarized. The reaction of 1,8-naphthalic anhydrides with ortho -phenylenediamine results in the formation of 1,8-naphthoylene-1’,2’-benzimidazoles, which are widely used as materials for luminescent flaw detection, for synthesis of polymers with luminescent color, in organic light emitting diodes, as luminescent sensors for cations of various metals. Moreover, their cytotoxic activity is studied in relation to cells of various tumors. Acenaphthoquinone or 8-formyl-1-naphthoic acid can also be used as starting materials for synthesis of 1,8-naphthoylene-1’,2’-benzimidazoles. The spectral properties of 1,8-naphthoylene-1’,2’-benzimidazoles can be varied by the substituent introduction to naphthalene or/and phenyl moieties leading to luminescent materials with blue, green-yellow or red luminescence. Reaction of 4-substituted naphthalic anhydrides with o -phenylenediamine results in mixture of two constitutional isomers due to nonequivalence of two carbonyl groups in starting anhydride. The isomer ratio remains unchanged provided that syntheses are carried out under the same conditions, therefore the luminescent properties of such isomer mixtures are constant. 1,8-Naphthoylene-1’,2’-benzimidazoles with electron donating groups in positions 4 or 5 of naphthalene ring can be successfully obtained by nucleophilic aromatic substitution of halogen by amine or alcoholate. The introduction of electron donating substituents to positions 4 or 5 of naphthalene ring results in bathochromic shift of absorption and emission maxima compared to unsubstituted 1,8-naphthoylene-1’,2’-benzimidazole, corresponding shift is 10-20 nm larger for 5-isomer than for 4-isomer. There are few examples of applying amines other than o -phenylenediamine for cyclocondensation with naphthalic anhydrides, for instance naphthalene-2,3-diamine and ethylenediamine were used as starting materials.","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"17 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91486590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-30DOI: 10.18524/2304-0947.2020.2(74).204380
T. L. Rakitskaya, L. Raskola
The known catalyst based on the inorganic support, MnCl2/SiО2, and used in personal respiratory protective devices showed its lack of prospects because of the very heavy load per a protective device and the short time of its protective action. As opposed to it, metal complex compositions based on activated carbons (AC) hold much promise. Since we intended to use activated carbons or compositions based on them in respirators protection against ozone, such an important parameter as the time of protective action was determined for activated carbons of different ranks and for the best one among MCl 2 /AC compositions (M is Cu, Co, or Mn, AC is activated carbon of KAD-iodnii rank) at initial ozone concentrations, СinО 3 , of 1,5 mg/m 3 and 10 mg/m 3 . For selection of the most effective MCl 2 /KAD-iodnii AC composition, the kinetics of ozone decomposition was investigated at СinО 3 = 500 mg/m3. The results of the latter testing showed that activity of the MCl2/KAD-iodnii AC compositions depended not only on the metal and anion nature but also on a degree of the activated carbon surface filling with metal ions. The maximum degree of ozone decomposition in a steady-state mode was demonstrated by MnCl 2 /KAD-iodnii AC. This fact can be explained by MnO 2 formation as a result of MnCl 2 oxidation with ozone. MnO 2 can be a secondary catalyst and stabilize the process of ozone decomposition. The time of protective action for activated carbons significantly depends on their chemical nature and specific micropore and mesopore volumes and increases in the order SKN-K < ART < KAD-iodnii < AG-3 < SKN-2M. MnCl2 anchoring on activated carbon of KAD-iodnii rank resulted in an essential increase in the time of protective action: an ozone outlet concentration was lower than MPCO 3 even in 48 hours. The protective properties of the catalyst for ozone microconcentration decomposition obtained by activated carbon of KADiodnii rank impregnation with MnCl2 are much better than those of the known domestic and foreign analogues and this composition can be used in the devices for protecting environment and human beings against ozone.
{"title":"OZONE DECOMPOSITION OVER ACTIVE COAL ANCHORED Cu(II), Co(II), OR Mn(II) CHLORIDES","authors":"T. L. Rakitskaya, L. Raskola","doi":"10.18524/2304-0947.2020.2(74).204380","DOIUrl":"https://doi.org/10.18524/2304-0947.2020.2(74).204380","url":null,"abstract":"The known catalyst based on the inorganic support, MnCl2/SiО2, and used in personal respiratory protective devices showed its lack of prospects because of the very heavy load per a protective device and the short time of its protective action. As opposed to it, metal complex compositions based on activated carbons (AC) hold much promise. Since we intended to use activated carbons or compositions based on them in respirators protection against ozone, such an important parameter as the time of protective action was determined for activated carbons of different ranks and for the best one among MCl 2 /AC compositions (M is Cu, Co, or Mn, AC is activated carbon of KAD-iodnii rank) at initial ozone concentrations, СinО 3 , of 1,5 mg/m 3 and 10 mg/m 3 . For selection of the most effective MCl 2 /KAD-iodnii AC composition, the kinetics of ozone decomposition was investigated at СinО 3 = 500 mg/m3. The results of the latter testing showed that activity of the MCl2/KAD-iodnii AC compositions depended not only on the metal and anion nature but also on a degree of the activated carbon surface filling with metal ions. The maximum degree of ozone decomposition in a steady-state mode was demonstrated by MnCl 2 /KAD-iodnii AC. This fact can be explained by MnO 2 formation as a result of MnCl 2 oxidation with ozone. MnO 2 can be a secondary catalyst and stabilize the process of ozone decomposition. The time of protective action for activated carbons significantly depends on their chemical nature and specific micropore and mesopore volumes and increases in the order SKN-K < ART < KAD-iodnii < AG-3 < SKN-2M. MnCl2 anchoring on activated carbon of KAD-iodnii rank resulted in an essential increase in the time of protective action: an ozone outlet concentration was lower than MPCO 3 even in 48 hours. The protective properties of the catalyst for ozone microconcentration decomposition obtained by activated carbon of KADiodnii rank impregnation with MnCl2 are much better than those of the known domestic and foreign analogues and this composition can be used in the devices for protecting environment and human beings against ozone.","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84867616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-30DOI: 10.18524/2304-0947.2020.2(74).204383
Т. А. Ostapyuk, I. Ivashchenko, I. D. Olekseyuk, O. Zmiy
{"title":"PHASE EQUILIBRIUM IN THE Cu2Se – CdSe – Sb2Se3 QUASITERNARY SYSTEM","authors":"Т. А. Ostapyuk, I. Ivashchenko, I. D. Olekseyuk, O. Zmiy","doi":"10.18524/2304-0947.2020.2(74).204383","DOIUrl":"https://doi.org/10.18524/2304-0947.2020.2(74).204383","url":null,"abstract":"","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"26 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76030268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-05-30DOI: 10.18524/2304-0947.2020.2(74).204382
A. Slipkan, D. Kytova, O. Shtemenko
The actual problem of creating a nanoscale delivery form of a combined system of rhenium(III) complex / cisplatin system with enhancing each other’s actions, which has pronounced antitumor properties and low toxicity, is revealed in the work. The need to create combination drugs for the treatment of cancer caused by the toxic effects of many substances that are already used in practice and are effective. As a result of this work, inorganic layered zirconium phosphate nanoparticles loaded with a combined system of rhenium(III) complex / cisplatin were obtained. The intercalation process was monitored by electron absorption spectroscopy. In addition to the interaction of the rhenium(III) compounds with the phosphate groups of the nanoparticles, the interaction with the cisplatin was also recorded. The X-ray powder diffraction method shows an increase in the interlayer space of zirconium phosphate after the reaction, which indicates the success of intercalation. The obtained diffraction peaks indicate the incorporation of rhenium(III) complexes, cisplatin and the interaction products of these compounds into the interlayer space of zirconium phosphate. It was also observed that the presence of cisplatin increases the interlayer space upon intercalation of the rhenium(III) compound. This peculiarity indicates that cisplatin serves as a preintercalator in the system under study. By quantitative analysis, the percentage of rhenium(III) in the nanoparticles obtained was determined on the Re-Re quadruple bond. The quantitative determination of the intercalated rhenium(III) compound is based on the reaction of the substitution of the carboxylate groups of the Re-Re cluster moiety with Cl- in concentrated hydrochloric acid. Depending on the structural type of compound used, the content of rhenium(III) in the nanoparticles was 40-42 %. As can be seen from previous studies, the incorporation of rhenium(III) in the obtained nanoparticles is higher than in the nanoparticles without cisplatin, which indicates a successful combination of rhenium(III) compounds with cisplatin. Obtained nanoparticles of combined action have prospects for use in medical practice for the treatment of tumor diseases.
{"title":"BASIC CHARACTERISTICS OF ZIRCONIUM PHOSPHATE NANOPARTICLES LOADED WITH RHENIUM(III) / CISPLATIN SYSTEM","authors":"A. Slipkan, D. Kytova, O. Shtemenko","doi":"10.18524/2304-0947.2020.2(74).204382","DOIUrl":"https://doi.org/10.18524/2304-0947.2020.2(74).204382","url":null,"abstract":"The actual problem of creating a nanoscale delivery form of a combined system of rhenium(III) complex / cisplatin system with enhancing each other’s actions, which has pronounced antitumor properties and low toxicity, is revealed in the work. The need to create combination drugs for the treatment of cancer caused by the toxic effects of many substances that are already used in practice and are effective. As a result of this work, inorganic layered zirconium phosphate nanoparticles loaded with a combined system of rhenium(III) complex / cisplatin were obtained. The intercalation process was monitored by electron absorption spectroscopy. In addition to the interaction of the rhenium(III) compounds with the phosphate groups of the nanoparticles, the interaction with the cisplatin was also recorded. The X-ray powder diffraction method shows an increase in the interlayer space of zirconium phosphate after the reaction, which indicates the success of intercalation. The obtained diffraction peaks indicate the incorporation of rhenium(III) complexes, cisplatin and the interaction products of these compounds into the interlayer space of zirconium phosphate. It was also observed that the presence of cisplatin increases the interlayer space upon intercalation of the rhenium(III) compound. This peculiarity indicates that cisplatin serves as a preintercalator in the system under study. By quantitative analysis, the percentage of rhenium(III) in the nanoparticles obtained was determined on the Re-Re quadruple bond. The quantitative determination of the intercalated rhenium(III) compound is based on the reaction of the substitution of the carboxylate groups of the Re-Re cluster moiety with Cl- in concentrated hydrochloric acid. Depending on the structural type of compound used, the content of rhenium(III) in the nanoparticles was 40-42 %. As can be seen from previous studies, the incorporation of rhenium(III) in the obtained nanoparticles is higher than in the nanoparticles without cisplatin, which indicates a successful combination of rhenium(III) compounds with cisplatin. Obtained nanoparticles of combined action have prospects for use in medical practice for the treatment of tumor diseases.","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82429433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-24DOI: 10.18524/2304-0947.2019.3(71).178924
M. A. Kozhemiak, O. Gurova
The patterns of sorption of lanthanum ions from model nitrate solutions by the natural sorbent clinoptilolite were investigated. It was shown that clinoptilolite is a rather effective sorbent of lanthanum ions. The kinetics of adsorption of lanthanum ions by clinoptilolite was studied. Based on the results obtained, it was established that the external and internal diffusion is the limiting stage of the process. Along with this, a certain contribution to the overall rate of the process is introduced and the stage of interaction of the adsorbed ions with the functional groups of clinoptilolite. According to Giles’s classification the isotherms of adsorption of lanthanum ions by clinoptilolite belong to L-type isotherms. To obtain quantitative characteristics of the sorption of lanthanum ions on clinoptilolite, the experimental results were processed using sorption models of Langmuir, Freindlich, and Dubinin – Radushkevich. It has been established that experimentally the isotherm of sorption of lanthanum from model nitrate solutions by the natural sorbent clinoptilolite is well described by all models in the same range of equilibrium concentrations. The obtained value ΔG 0sorb = -36.87 kJ/mol indicates a rather high affinity of the sorbent for the sorbate and the advisability of using clinoptilolite to extract lanthanum compounds from model nitrate solutions. Using the Dubinin-Radushkevich model, which indicates the nature of sorbate sorption on the sorbent, it was calculated average free energy of sorption. Calculations showed that the value of the free energy of sorption E = 12 kJ/mol indicates the chemical nature of the interaction of the sorbate with the sorbent. Thus, the process of sorption of lanthanum ions on the surface of clinoptilolite proceeds according to the ion-exchange mechanism, and the fixation of lanthanum ions has a chemical nature.
{"title":"SORPTION OF IONS LANTHANUM BY CLINOPTILITE","authors":"M. A. Kozhemiak, O. Gurova","doi":"10.18524/2304-0947.2019.3(71).178924","DOIUrl":"https://doi.org/10.18524/2304-0947.2019.3(71).178924","url":null,"abstract":"The patterns of sorption of lanthanum ions from model nitrate solutions by the natural sorbent clinoptilolite were investigated. It was shown that clinoptilolite is a rather effective sorbent of lanthanum ions. The kinetics of adsorption of lanthanum ions by clinoptilolite was studied. Based on the results obtained, it was established that the external and internal diffusion is the limiting stage of the process. Along with this, a certain contribution to the overall rate of the process is introduced and the stage of interaction of the adsorbed ions with the functional groups of clinoptilolite. According to Giles’s classification the isotherms of adsorption of lanthanum ions by clinoptilolite belong to L-type isotherms. To obtain quantitative characteristics of the sorption of lanthanum ions on clinoptilolite, the experimental results were processed using sorption models of Langmuir, Freindlich, and Dubinin – Radushkevich. It has been established that experimentally the isotherm of sorption of lanthanum from model nitrate solutions by the natural sorbent clinoptilolite is well described by all models in the same range of equilibrium concentrations. The obtained value ΔG 0sorb = -36.87 kJ/mol indicates a rather high affinity of the sorbent for the sorbate and the advisability of using clinoptilolite to extract lanthanum compounds from model nitrate solutions. Using the Dubinin-Radushkevich model, which indicates the nature of sorbate sorption on the sorbent, it was calculated average free energy of sorption. Calculations showed that the value of the free energy of sorption E = 12 kJ/mol indicates the chemical nature of the interaction of the sorbate with the sorbent. Thus, the process of sorption of lanthanum ions on the surface of clinoptilolite proceeds according to the ion-exchange mechanism, and the fixation of lanthanum ions has a chemical nature.","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"357 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76325283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-09DOI: 10.18524/2304-0947.2019.3(71).177735
А. М. Storchak, Т. Velikanova, L. Artyukh, М. А. Turchanin, P. Agraval, V. Petyukh
{"title":"LIQUIDUS SURFACE AND MELTING DIAGRAM OF THE TERNARY Ni–Ti–Zr SYSTEM IN RICH IN NICKEL AREA OF CONTENTS","authors":"А. М. Storchak, Т. Velikanova, L. Artyukh, М. А. Turchanin, P. Agraval, V. Petyukh","doi":"10.18524/2304-0947.2019.3(71).177735","DOIUrl":"https://doi.org/10.18524/2304-0947.2019.3(71).177735","url":null,"abstract":"","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85669854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-09-09DOI: 10.18524/2304-0947.2019.3(71).177737
O. Perlova, K. I. Tekmenzi, N. Perlova, A. Polikarpov
Some regularities of Uranium(VI) compounds sorption recovery from model sulfate solutions by fibrous ion exchangers FIBAN C-1 (strongly acidic cation exchanger with -SO3H groups), FIBAN AC-22V (polyampholyte with amino- and carboxyl groups) and FIBAN A-6 (anion exchanger with strongly basic and weakly basic aminogroups) under dynamic conditions were established. It was shown that effective recovery and concentration of Uranium(VI) are combined with a high rate of Uranium(VI) sorption. Quantitative characteristics of Uranium sorption under dynamic conditions such as dynamic exchange capacity, total dynamic exchange capacity, degree of Uranium recovery, Uranium content in the phase of the sorbent, sorption rate were calculated. It was established that the fibrous polyampholyte FIBAN АC-22V demonstrated the better indicators of Uranium(VI) sorption from sulfate solutions and concentration of these solutions (5.2 – 10.5 times) than other fibrous ion exchangers. It was shown that a 10-fold increase in the Uranium concentration in solutions leads to a considerable improvement of the sorption quantitative characteristics. It was found that the initial form of the fibrous ion exchangers can be completely restored by passing through the ion exchangers in Uranium form of a 0.5 M HCl or H2SO4 solutions. It was established that the fibrous polyampholyte FIBAN АC-22V advantageously be used for one cycle of Uranium(VI) sorption – desorption, and the fibrous cation exchanger FIBAN C-1 can be used during two cycles of Uranium(VI) sorption – desorption. The interaction mechanism of the Uranium(VI) compounds present in sulfate solutions (uranyl cations, neutral and negative sulfate complexes) with functional groups of studied sorbents was proposed.
{"title":"FIBROUS ION EXCHANGERS FIBAN AS SORBENTS OF URANIUM(VI) COMPOUNDS PRESENT IN SULFATE SOLUTIONS","authors":"O. Perlova, K. I. Tekmenzi, N. Perlova, A. Polikarpov","doi":"10.18524/2304-0947.2019.3(71).177737","DOIUrl":"https://doi.org/10.18524/2304-0947.2019.3(71).177737","url":null,"abstract":"Some regularities of Uranium(VI) compounds sorption recovery from model sulfate solutions by fibrous ion exchangers FIBAN C-1 (strongly acidic cation exchanger with -SO3H groups), FIBAN AC-22V (polyampholyte with amino- and carboxyl groups) and FIBAN A-6 (anion exchanger with strongly basic and weakly basic aminogroups) under dynamic conditions were established. It was shown that effective recovery and concentration of Uranium(VI) are combined with a high rate of Uranium(VI) sorption. Quantitative characteristics of Uranium sorption under dynamic conditions such as dynamic exchange capacity, total dynamic exchange capacity, degree of Uranium recovery, Uranium content in the phase of the sorbent, sorption rate were calculated. It was established that the fibrous polyampholyte FIBAN АC-22V demonstrated the better indicators of Uranium(VI) sorption from sulfate solutions and concentration of these solutions (5.2 – 10.5 times) than other fibrous ion exchangers. It was shown that a 10-fold increase in the Uranium concentration in solutions leads to a considerable improvement of the sorption quantitative characteristics. It was found that the initial form of the fibrous ion exchangers can be completely restored by passing through the ion exchangers in Uranium form of a 0.5 M HCl or H2SO4 solutions. It was established that the fibrous polyampholyte FIBAN АC-22V advantageously be used for one cycle of Uranium(VI) sorption – desorption, and the fibrous cation exchanger FIBAN C-1 can be used during two cycles of Uranium(VI) sorption – desorption. The interaction mechanism of the Uranium(VI) compounds present in sulfate solutions (uranyl cations, neutral and negative sulfate complexes) with functional groups of studied sorbents was proposed.","PeriodicalId":19451,"journal":{"name":"Odesa National University Herald. Chemistry","volume":"601 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77300263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：