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Chemical grafting of sulfo groups onto carbon fibers 碳纤维上亚砜基团的化学接枝
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p40-51
L. Grishchenko, T. Bezugla, A. Vakaliuk, A. Zaderko, Оleksandr Mischanchuk, T. Zakharova, O. Boldyrieva, V. Diyuk
{"title":"Chemical grafting of sulfo groups onto carbon fibers","authors":"L. Grishchenko, T. Bezugla, A. Vakaliuk, A. Zaderko, Оleksandr Mischanchuk, T. Zakharova, O. Boldyrieva, V. Diyuk","doi":"10.17721/fujcv7i2p40-51","DOIUrl":"https://doi.org/10.17721/fujcv7i2p40-51","url":null,"abstract":"We proposed the brominated carbon cloth that made of polyacrylonitrile-based activated carbon fibers (PAN-ACFs) as a precursor to chemically and uniformly graft SO3H groups to prepare the solid acid catalyst. The thermal and catalytic properties of the sulfonated PAN-ACFs were examined by IR controlled catalytic measurements and thermal analysis. The catalytic test results showed that the sulfonated surface remarkably improved the operating efficiency in isopropanol dehydration by decreasing the reaction temperature. All PAN-ACFs with grafted SO3H groups prepared through brominated precursors can converse 100% of isopropanol into propylene at moderate temperature. They showed the highest catalytic activity compared to PAN-ACFs sulfonated with oleum and chlorosulfonic acid, which conversed only 40% and 70% of isopropanol into propylene and deactivated at the higher temperatures in the reaction medium.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47159156","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}
引用次数: 0
Thermochemical properties and glass forming tendency modeling for the ternary Ge–Mn–Gd melts 三元Ge-Mn-Gd熔体的热化学性质及玻璃化倾向模拟
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p68-79
N. Kotova, Natalia Usenko, N. Golovata
{"title":"Thermochemical properties and glass forming tendency modeling for the ternary Ge–Mn–Gd melts","authors":"N. Kotova, Natalia Usenko, N. Golovata","doi":"10.17721/fujcv7i2p68-79","DOIUrl":"https://doi.org/10.17721/fujcv7i2p68-79","url":null,"abstract":"Information on the thermochemical properties may be useful for predicting of the concentration regions of easy glass formation in multicomponent alloys. In present investigation the integral enthalpies of mixing for the Ge–Mn–Gd melts were determined for the entire concentration interval at 1830 K using the Redlich-Kister-Muggianu method. GFT values for binary and ternary alloys of this system were calculated. Size mismatch entropy was estimated within the frameworks of hard spheres model. On the basis of performed calculations the concentration regions in which the melts of the Ge–Mn–Gd system can demonstrate considerable tendency to easy glass formation were suggested.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48432705","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}
引用次数: 1
Studies of the Association of Dyes with Surfactants in Aqueous Solutions: Spectrophotometry and Computer Simulation 染料与表面活性剂在水溶液中缔合的研究：分光光度法和计算机模拟
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/FUJCV7I2P9-19
S. Shapovalov, V. Ponomariov, Oryna V. Mosharenkova, Sophia V. Butenko
{"title":"Studies of the Association of Dyes with Surfactants in Aqueous Solutions: Spectrophotometry and Computer Simulation","authors":"S. Shapovalov, V. Ponomariov, Oryna V. Mosharenkova, Sophia V. Butenko","doi":"10.17721/FUJCV7I2P9-19","DOIUrl":"https://doi.org/10.17721/FUJCV7I2P9-19","url":null,"abstract":"The association of cationic dye (pinacyanol, PC) with anionic dyes (ethyleosin, EE, or rhodamine 200 C, R200C), and also the interaction “dye+surfactant” has been investigated in aqueous solutions by visible spectroscopy and computer simulation. Cetylpyridinium bromide (CPB), sodium dodecylsulfate (SDS) and triton X-100 (TX) were used as cationic, anionic and non-ionic surfactants respectively. The formation of “dye+surfactant” associates takes place at low dye concentrations (≥10‑6 M) and concentrations of surfactant, which are much smaller than the critical micelle concentrations (CMC). In contrast, similar concentrations (10‑6 – 10‑4 M) of small cations of tetramethylammonium or tetraethylammonium have no noticeable effect on the absorption spectra of the dye in the “dye+tetraalkylammonium salt” systems; it indicates the absence of formation of new compound between the dye and salt. The standard enthalpy of formation of “dye+dye” or “dye+surfactant” associates has been determined by AM1 and PM3 semiempirical methods. The computer simulation confirms that the formation of these associates is energetically beneficial.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43406372","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}
引用次数: 2
The quantitative determination of Perphenazine in tablets by the spectrophotometric method as its sulfoxide obtained with diperoxyazelaic acid 用分光光度法定量测定片中奋那嗪的含量
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p96-103
M. Blazheyevskiy, Myhailo Kucher, O. Shpychak
{"title":"The quantitative determination of Perphenazine in tablets by the spectrophotometric method as its sulfoxide obtained with diperoxyazelaic acid","authors":"M. Blazheyevskiy, Myhailo Kucher, O. Shpychak","doi":"10.17721/fujcv7i2p96-103","DOIUrl":"https://doi.org/10.17721/fujcv7i2p96-103","url":null,"abstract":"The oxidative derivatization method using diperoxyazelaic acid for the indirect spectrophotometric determination of Perphenazine dihydrochloride is presented. Diperoxyazelaic acid is introduced as a derivatizing agent for Perphenazine, yielding sulfoxides. This reaction product was successfully employed for the spectrophotometric determination of Perphenazine dihydrochloride. The UV spectroscopic detection of sulfoxide has been proven to be the more robust and selective. The method developed allowed determination of Perphenazine dihydrochloride in the concentration range of 1–40 µg/mL. The limits of quantification (LOQ=10S) is 3.3 µg·ml-1. A new spectrophotometric method has been developed, and the possibility of the quantitative determination of Perphenazine dihydrochloride in Perphenazine Tablets has been demonstrated. The present method is precise, accurate and other inactive excipients of the drug do not interfere. RSD = 2.00%; δ=( -µ) 100%/µ = – 0.85 %).","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47872120","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}
引用次数: 0
Sorption properties of saponite clay, in situ modified by poly(4-vinylpyridine-co-styrene), towards Cu(II), Cd(II), Pb(II), Mn(ІІ) and Fe(III) ions 聚（4-乙烯基吡啶-共苯乙烯）原位改性皂石粘土对Cu（II）、Cd（II），Pb（II）和Mn（I）及Fe（III）离子的吸附性能
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p145-152
E. Yanovska, O. Nikolaeva, O. Kondratenko, L. Vretik
{"title":"Sorption properties of saponite clay, in situ modified by poly(4-vinylpyridine-co-styrene), towards Cu(II), Cd(II), Pb(II), Mn(ІІ) and Fe(III) ions","authors":"E. Yanovska, O. Nikolaeva, O. Kondratenko, L. Vretik","doi":"10.17721/fujcv7i2p145-152","DOIUrl":"https://doi.org/10.17721/fujcv7i2p145-152","url":null,"abstract":"In situ modification with copolymer of 4-vinylpyridine and styrene (molar ratio 3:1) of natural mineral saponite from deposit Tashkivske(Ukraine) by radical polymerization was carried out. Anchorage of organic polymer 4-vinylpyridine-co- styrene on the mineral surface was proved by IR spectroscopy, mass spectrometry and scanning electron microscopy. The amount of immobilized copolymer in the synthesized composite material according to the thermogravimetric analysis is 8.5 wt.%. The recorded adsorption capacity of the composite with respect to Cu(II), Pb(II) and Fe(III) ions was increased in comparison with native mineral saponite.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48029960","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}
引用次数: 2
Recognition and Binding of Aliphatic Dicarboxylic Acids C4 – C10 by Diiminocalix[4]arene 二亚氨基羧酸[4]芳烃对脂肪族二羧酸C4 - C10的识别与结合
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p61-67
O. Kalchenko, A. Solovyov, V. Kalchenko
{"title":"Recognition and Binding of Aliphatic Dicarboxylic Acids C4 – C10 by Diiminocalix[4]arene","authors":"O. Kalchenko, A. Solovyov, V. Kalchenko","doi":"10.17721/fujcv7i2p61-67","DOIUrl":"https://doi.org/10.17721/fujcv7i2p61-67","url":null,"abstract":"Host-Guest complexation of 5,17-bis-(N-tolyliminomethyl)-25,27-dipropoxycalix[4]arenewithaliphatic dicarboxylicacidsC4 – C10 hasbeenstudiedin water-organic solution by the RP HPLC and molecular modeling methods. The stability constants (log KA =2.56– 3.05) of the supramolecular complexes are depended on structure, pKa and log Pvalues of the acids. The complexation is determined by the hydrogen bonds of the COOH group of the dicarboxylic acids with nitrogen atoms at the upper rim or oxygen atoms at the lower rim of the calixarene.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43805045","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}
引用次数: 0
A new oxidative derivatization method for spectrophotometric determination of Periciazine in pharmaceutical preparations 氧化衍生化分光光度法测定药物制剂中哌嗪的含量
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p52-60
M. Blazheyevskiy, V. Moroz
{"title":"A new oxidative derivatization method for spectrophotometric determination of Periciazine in pharmaceutical preparations","authors":"M. Blazheyevskiy, V. Moroz","doi":"10.17721/fujcv7i2p52-60","DOIUrl":"https://doi.org/10.17721/fujcv7i2p52-60","url":null,"abstract":"A new the oxidative derivatization method by means of peroxoacid for the indirect spectrophotometric determination of Periciazine is presented. A potassium hydrogenperoxymonosulfateas a derivatizing agent for Periciazine, yielding the absorbative Periciazine sulfoxide at λmaх=362 nm is proposed. This reaction product was successfully employed for spectrophotometric determination of the Periciazine. The UV spectrophotometric determination of the Periciazine as its sulfoxide proved to be the more simple and selective method. Limit of quantification (LOQ=10S) is 2.8 µg·mL-1. The common excipients employed do not interfere in the determination of phenothiazine drug. Results of analysis of the drug dosage forms by the proposed method are in good agreement with those of the official method. RSD=1.76 % (δ","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67433634","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}
引用次数: 1
Selecting a k-ε turbulence model for investigating n-decane combustion in a diesel engine combustion chamber 选择k-ε湍流模型研究柴油机燃烧室内正癸烷的燃烧
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p80-87
A. Avramenko
{"title":"Selecting a k-ε turbulence model for investigating n-decane combustion in a diesel engine combustion chamber","authors":"A. Avramenko","doi":"10.17721/fujcv7i2p80-87","DOIUrl":"https://doi.org/10.17721/fujcv7i2p80-87","url":null,"abstract":"The results of a comparative numerical simulation of combustion and formation of toxic substances in a diesel engine combustion chamber are given. Experimental findings were used to identify the mathematical models. The impact of the standard, RNG and realizable k-ε turbulence models on the accuracy of numerical simulation of combustion and the formation of toxic substances was studied. The realizable k-ε turbulence model was shown to provide a closer agreement of computational and experimental data during simulation of the diesel engine process when turbulent flows are described.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46869688","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}
引用次数: 0
Investigation of aspects of the interaction of the indicators of lipid exchange, trombocitarian block of hemostasis, total body reactivity and their influence on the psychosomatic harmonization of the man in chronic inflammatory processes 慢性炎症过程中脂质交换、血小板阻滞止血、全身反应性等指标相互作用及其对人体心身协调影响的研究
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p120-137
I. Sokolovskaya, A. Kutsak, V. Zarytska, Valentina Nechiporenko, Natalia Gordiyenko, Yuliia Siliavina, K. Horash, Oleg Plakhotnik
{"title":"Investigation of aspects of the interaction of the indicators of lipid exchange, trombocitarian block of hemostasis, total body reactivity and their influence on the psychosomatic harmonization of the man in chronic inflammatory processes","authors":"I. Sokolovskaya, A. Kutsak, V. Zarytska, Valentina Nechiporenko, Natalia Gordiyenko, Yuliia Siliavina, K. Horash, Oleg Plakhotnik","doi":"10.17721/fujcv7i2p120-137","DOIUrl":"https://doi.org/10.17721/fujcv7i2p120-137","url":null,"abstract":"For the first time on the basis of clinical and laboratory researches were revealed the correlation of indicators of lipid metabolism, platelet level of hemostasis and general reactivity in patients with chronic inflammatory processes of the genital system. The new pathogenetic aspects of the course of inflammatory diseases have been established. It has been shown that chronic inflammatory process is accompanied by disorders of lipid metabolism. The degree of severity of these changes depends on the severity of the inflammatory process, the reduction of phagocytic activity of polymorphonuclear leukocytes and the activation of macrophage and specific cellular mechanisms, accompanied by auto-intoxication. It is established that the frequency of atherogenic dyslipoproteinemias, as well as the intensity of lipid peroxidation increases in accordance with the increase age of the examined patients. Most atherogenic dyslipoproteinemias are found in patients with viral and chlamydial infections. The summarized data of the correlation analysis allow us to establish that the growth of atherogenic properties of blood plasma of patients with chronic inflammatory processes of the reproductive system occurs in accordance with the increase of adhesive-aggregation properties of platelets and damage of the vascular endothelium. These shifts occur in parallel with the predominance of the monocyte-macrophage linkage of phagocytosis against the background of reduced activity of neutrophils and cellular mechanisms of development of immunopathological reactions.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42686984","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}
引用次数: 0
Thermodynamic properties of methyl 4-(4-methoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate in organic solutions 4-（4-甲氧基苯基）-6-甲基-2-氧代-1,2,3,4-四氢嘧啶-5-羧酸甲酯在有机溶液中的热力学性质
IF 0.2
French-Ukrainian Journal of Chemistry Pub Date : 2019-12-24 DOI: 10.17721/fujcv7i2p1-8
O. Ridka, V. Matiychuk, I. Sobechko, N. Tyshchenko, M. Novyk, V. Sergeev, L. Goshko
{"title":"Thermodynamic properties of methyl 4-(4-methoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate in organic solutions","authors":"O. Ridka, V. Matiychuk, I. Sobechko, N. Tyshchenko, M. Novyk, V. Sergeev, L. Goshko","doi":"10.17721/fujcv7i2p1-8","DOIUrl":"https://doi.org/10.17721/fujcv7i2p1-8","url":null,"abstract":"The enthalpy and the entropy of dissolution of methyl 4-(4-methoxyphenyl)-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate in 2-propanol, ethyl acetate, acetonitrile, 2-propanone and benzene were determined from the temperature dependence of its solubility.The enthalpies and the entropies of mixing at 298 K were calculated taking into account the enthalpy of melting of the compound, determined via differential thermal analysis.The influence of the solvent on the solubility of the compound and on the corresponding enthalpy and entropy of mixing values was shown.","PeriodicalId":42056,"journal":{"name":"French-Ukrainian Journal of Chemistry","volume":" ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2019-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46166088","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}
引用次数: 1
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