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Voltammetric Determination of Pd(II) Using 5-Hydroxyimino-4-imino-1,3-thiazolidin-2-one after a Thermal Activation of the Interaction 热活化作用后5-羟基亚胺-4-亚胺-1,3-噻唑烷-2-酮伏安法测定Pd(II
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.324
P. Rydchuk, O. Labyk, L. Oleksiv, O. Tymoshuk, T. Chaban
{"title":"Voltammetric Determination of Pd(II) Using 5-Hydroxyimino-4-imino-1,3-thiazolidin-2-one after a Thermal Activation of the Interaction","authors":"P. Rydchuk, O. Labyk, L. Oleksiv, O. Tymoshuk, T. Chaban","doi":"10.23939/chcht15.03.324","DOIUrl":"https://doi.org/10.23939/chcht15.03.324","url":null,"abstract":"The interaction of Pd(II) with 5-hydroxyimino-4-imino-1,3-thiazolidin-2-one (HITO) was investigated over the pH range of 1.0–10.0. Optimal conditions for the voltammetric determination of Pd(II) were established. A new voltammetric method of Pd(II) determination by the peak of complex using NaCl as a supporting electrolyte at pH 2.0 was developed with the limit of detection 2.0∙10-7 M. The study of the method’s selectivity was presented in the work. The correctness of the method was confirmed by the analysis of model solutions and the real sample (resistor SP5-35B).","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"68 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84591288","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
Investigation of Petroleum Bitumen Resistance to Aging 石油沥青耐老化性能的研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.438
O. Grynyshyn, M. Donchenko, Yurii Khlibyshyn, O. Poliak
{"title":"Investigation of Petroleum Bitumen Resistance to Aging","authors":"O. Grynyshyn, M. Donchenko, Yurii Khlibyshyn, O. Poliak","doi":"10.23939/chcht15.03.438","DOIUrl":"https://doi.org/10.23939/chcht15.03.438","url":null,"abstract":"Aging peculiarities of paving bitumen, which was obtained by different ways, have been studied. Oxidized and residual bitumen produced from oils of Ukrainian deposits were used and the changes in the main characteristics of bitumen after 5 and 10 h of aging in a thin film at the temperature of 436 K have been determined and the processes occurred during the aging have been studied. Using infrared spectroscopy, the changes in the structural composition of the binder during aging have been analyzed.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"26 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78718508","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: 5
The Influence of Sample pH on the Determination of Selected Carboxylic Acids by Isocratic Ion Chromatography 样品pH对等差离子色谱法测定所选羧酸的影响
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.319
Paulina Pecyna-Utylska, T. Konieczny, R. Michalski
{"title":"The Influence of Sample pH on the Determination of Selected Carboxylic Acids by Isocratic Ion Chromatography","authors":"Paulina Pecyna-Utylska, T. Konieczny, R. Michalski","doi":"10.23939/chcht15.03.319","DOIUrl":"https://doi.org/10.23939/chcht15.03.319","url":null,"abstract":"Validated isocratic ion chromatography method with suppressed conductivity detection has been developed for the simultaneously determination of common inorganic anions (F-, Cl-, NO3-, PO43-, SO42-), as well as formate and acetate. Liquid samples originate from absorption of gaseous by-products from coal combustion with and without the addition of medium-density fireboards. The influence of sample pH changes on carboxylic acids determination has been tested.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"69 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74166106","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
Kinetic Model for Dissolution of Cement Copper in Sulfuric Acid Solutions Containing Cupric Ions 水泥铜在含铜离子硫酸溶液中溶解动力学模型
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.395
N. Demirkıran, G. D. T. Özdemir
{"title":"Kinetic Model for Dissolution of Cement Copper in Sulfuric Acid Solutions Containing Cupric Ions","authors":"N. Demirkıran, G. D. T. Özdemir","doi":"10.23939/chcht15.03.395","DOIUrl":"https://doi.org/10.23939/chcht15.03.395","url":null,"abstract":"In this paper, the dissolution kinetics of cement copper powder in sulfuric acid solutions containing cupric ions was examined. It was observed that the dissolution rate of copper increased with increasing the acid concentration, temperature, and stirring speed. It was determined that the dissolution rate of copper enhanced with increasing the cupric ion concentration up to 0.025 M. It was found that the temperature and concentration of cupric ion had more considerable effects on the dissolution of copper powder. The kinetic analysis of the process was performed, and it was observed that it fits the first order pseudo-homogenous reaction model. The activation energy was calculated to be 31.1 kJ/mol.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"55 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75648150","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
Linear Hexane Isomerization Over Bimetallic Zeolite Catalysts 双金属沸石催化剂上的线性己烷异构化
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.330
L. Patrylak, O. Pertko, Y. Voloshyna, A. Yakovenko, V. Povazhnyi, O. Melnychuk, Kostyantyn Zlochevskyi
{"title":"Linear Hexane Isomerization Over Bimetallic Zeolite Catalysts","authors":"L. Patrylak, O. Pertko, Y. Voloshyna, A. Yakovenko, V. Povazhnyi, O. Melnychuk, Kostyantyn Zlochevskyi","doi":"10.23939/chcht15.03.330","DOIUrl":"https://doi.org/10.23939/chcht15.03.330","url":null,"abstract":"The aim of this study was to evaluate the activity and selectivity in isomerization of n-hexane of bimetallic zeolite catalysts containing a nickel transition metal in addition to palladium. Bimetallic bifunctional linear alkane isomerization catalysts based on the hydrogen form of MFI zeolite have been synthesized. The porous properties of the samples were investigated by means of low-temperature nitrogen adsorption/desorption, the size of the metal component – by TEM, and the catalytic properties – in the micro-pulse isomerization of n-hexane. Antisymbatic correlation between the temperature of the maximum yield of hexane isomers and the amount of nickel in the sample was found for a stable palladium content. The introduction of nickel allows to reduce the optimum process temperature from 598 to 523 K.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82579202","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
Establishment of the Regularities of the Concentrations Change of Microorganisms and Water-Soluble Compounds in Polluted Water after Ultrasound Treatment 超声处理后污水中微生物及水溶性化合物浓度变化规律的建立
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.408
V. Starchevskyy, N. Bernatska, I. Typilo, Lilianna Oliynyk, O. Strogan
{"title":"Establishment of the Regularities of the Concentrations Change of Microorganisms and Water-Soluble Compounds in Polluted Water after Ultrasound Treatment","authors":"V. Starchevskyy, N. Bernatska, I. Typilo, Lilianna Oliynyk, O. Strogan","doi":"10.23939/chcht15.03.408","DOIUrl":"https://doi.org/10.23939/chcht15.03.408","url":null,"abstract":"The regularities of the change of the concentration of microorganisms and water-soluble organic compounds in the polluted water in the conditions of cavitation treatment and the influence of the amount of biological water pollution on the value of the chemical oxygen consumption are investigated.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"14 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82200769","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
Influence of Amino Acids and Alcohols on Catalytic Oxidation of Cyclohexane 氨基酸和醇类对环己烷催化氧化的影响
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.352
Anatolij Ludyn, V. Reutskyy, V. Reutskyy, Y. Hrynchuk
{"title":"Influence of Amino Acids and Alcohols on Catalytic Oxidation of Cyclohexane","authors":"Anatolij Ludyn, V. Reutskyy, V. Reutskyy, Y. Hrynchuk","doi":"10.23939/chcht15.03.352","DOIUrl":"https://doi.org/10.23939/chcht15.03.352","url":null,"abstract":"Conducted experiments and collected data show that use of catalytic systems that contain individual amino acids and industrial catalyst – solution of cobalt naphtenate with cyclohexanone – have certain influence on the process of liquid-phase homogeneous oxidation of cyclohexane. The results of spectral studies of binary catalytic systems based on NC using additives of different nature (alcohols and nitrogen-containing modifiers) allow us to propose structural formulas of catalytic complexes.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"58 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80183800","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
Study on the Properties of Semi-Synthetic Motor Oil Castrol 10W-40 after Use in a Diesel Engine 嘉实多10W-40半合成机油在柴油机上使用后的性能研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.432
T. Chervinskyy, O. Grynyshyn, R. Prokop, P. Shapoval, B. Korchak
{"title":"Study on the Properties of Semi-Synthetic Motor Oil Castrol 10W-40 after Use in a Diesel Engine","authors":"T. Chervinskyy, O. Grynyshyn, R. Prokop, P. Shapoval, B. Korchak","doi":"10.23939/chcht15.03.432","DOIUrl":"https://doi.org/10.23939/chcht15.03.432","url":null,"abstract":"The changes in operational and physico-chemical properties of original and used semi-synthetic motor oil Castrol 10W-40 before and after its use in a diesel engine have been investigated. Derivatographic studies were carried out to examine a thermal stability; IR spectroscopy was used to confirm the presence of oil aging products. The composition of the inorganic part of the studied semi-synthetic oils was established by X-ray fluorescence analysis.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"193 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79690189","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
Study on Chemistry of Oxidative Desulfurization Process of High Sulfur Straight-Run Oil Fraction 高硫直馏油馏分氧化脱硫过程的化学研究
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.414
S. Pyshyev, B. Korchak, D. Miroshnichenko, Bemgba Bevan Nyakuma
{"title":"Study on Chemistry of Oxidative Desulfurization Process of High Sulfur Straight-Run Oil Fraction","authors":"S. Pyshyev, B. Korchak, D. Miroshnichenko, Bemgba Bevan Nyakuma","doi":"10.23939/chcht15.03.414","DOIUrl":"https://doi.org/10.23939/chcht15.03.414","url":null,"abstract":"In the article the chemistry of the noncatalytic oxidative desulfurization process of distillate oil fractions is analyzed. The study involves the characteristics of high-sulfur straight-run diesel fraction of narrow composition (593–623 K) before and after oxidation by air at 453–493 K and a pressure of 3.0 MPa. The composition of sulfur compounds in the raw material fraction was determined. It is shown that straight-run fractions of raw materials may also contain sulfoxides, which are products of oxidation of organosulfur compounds and are formed during storage of petroleum products. On the basis of IR spectroscopic studies of raw materials, oxidized products and model mixtures, the transformation depth of fr. 593–623 K sulfur compounds, which are distributed in the form of sulfones and sulfoxides in solid and liquid oxidation products, and partially remain in the purified fuel, was analyzed in the above-mentioned process.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"74 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80469193","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
Compositional Fibers Based on Coal Tar Mesophase Pitch Obtained by Electrospinning Method 静电纺丝法制备煤焦油中间相沥青复合纤维
IF 0.9
Chemistry & Chemical Technology Pub Date : 2021-08-15 DOI: 10.23939/chcht15.03.403
A. Imangazy, G. Smagulova, B. Kaidar, Z. Mansurov, A. Kerimkulova, K. Umbetkaliev, A. Zakhidov, P. Vorobyev, T. Jumadilov
{"title":"Compositional Fibers Based on Coal Tar Mesophase Pitch Obtained by Electrospinning Method","authors":"A. Imangazy, G. Smagulova, B. Kaidar, Z. Mansurov, A. Kerimkulova, K. Umbetkaliev, A. Zakhidov, P. Vorobyev, T. Jumadilov","doi":"10.23939/chcht15.03.403","DOIUrl":"https://doi.org/10.23939/chcht15.03.403","url":null,"abstract":"This research examines the use of coal-processing wastes of Shubarkol deposit (Kazakhstan) in obtaining useful materials such as carbon fibers. For our experiments, mesophase pitch was obtained by coal tar heat treatment at 773 K. Spinnable solution was prepared by crushing mesophase pitch into the pieces with adding poly(methylmethacrylate) as a fiber-forming material and 1,2-dichloroethane as a solvent. Elemental analysis revealed that the chemical composition of mesophase pitch (С – 91.48 %; О – 8.52 %; S – 0.00 %) showed that heat treatment up to 773 K leads to the complete removal of sulfur-containing components which affect the mesophase formation. Raman data of the obtained pitch revealed the appearance of D (1366 cm-1) and G (1605 cm-1) peaks, which are responsible for carbon materials; another peak at 2900 cm-1 shows the presence of C–H bonds. Carbon fibers with the diameter of 0.8–1.75 μm were obtained by electrospinning method in laboratory settings.","PeriodicalId":9793,"journal":{"name":"Chemistry & Chemical Technology","volume":"58 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80286447","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: 4
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