Voprosy Khimii i Khimicheskoi Tekhnologii最新文献

Active substances of a solid corrosion inhibitor for the oil and gas industry 石油天然气工业固体缓蚀剂的活性物质

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-21-28

I.M. Kartun, B.F. Kochirko

{"title":"Active substances of a solid corrosion inhibitor for the oil and gas industry","authors":"I.M. Kartun, B.F. Kochirko","doi":"10.32434/0321-4095-2024-152-1-21-28","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-21-28","url":null,"abstract":"This paper reports the method of synthesis and the results of the investigation of the components of a solid corrosion inhibitor intended for the protection of equipment of gas-condensate and oil wells. 1-Amidohydroxystearate-diethyldiamine-2-hydroxystearylimidazoline was synthesized by the interaction of hydroxystearic acid with triethyltetramine. By chemical transformation of pork fat with triethyltetramine, amidoamines of fatty acids were synthesized. The passage of the relevant chemical reactions was confirmed by the methods of infrared spectroscopy and gas chromatographic analysis. The gravimetric method was used to investigate the inhibitory properties of the synthesized substances with respect to 08 ps steel in a simulated corrosive medium. The optimal ratio between 1-amidohydroxystearate-diethyldiamine-2-hydroxystearylimidazoline and amidoamines of fatty acids in the composition of the corrosion inhibitor in a new commercial form (solid) was established. It was shown that the use of amidoamines of fatty acids as part of a corrosion inhibitor helps to reduce its softening temperature and improve plasticity and solubility.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"129 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465720","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

Modeling of equilibria in acidified solutions of sodium orthotungstate in the presence of calcium(II) ions 钙离子（II）存在时正钨酸钠酸化溶液中的平衡模拟

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-37-47

O.M. Kordysh, I.A. Knyzhnyk, S. V. Radio, G. M. Rozantsev

{"title":"Modeling of equilibria in acidified solutions of sodium orthotungstate in the presence of calcium(II) ions","authors":"O.M. Kordysh, I.A. Knyzhnyk, S. V. Radio, G. M. Rozantsev","doi":"10.32434/0321-4095-2024-152-1-37-47","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-37-47","url":null,"abstract":"The interactions of the Ca2+–WO42––H+–H2O system initially acidified to the molar ratio (acidity) Z=(H+)/(WO42–)=1.00 were studied by the methods of pH-potentiometry, mathematical modeling and conductometry in the interval Z=0.60–2.00 at 2980.1 K with NaNO3 (I=0.05–0.30 moll–1) as the supporting electrolyte. The logarithms of the equilibrium concentration constants were calculated by the Newton's method, and previously unknown logarithms of the thermodynamic constants and Gibbs energy of the reactions of the formation of ion associates Ca2+,[W4O14(OH)2]4–; Ca2+,[W6O20(OH)2]6–; Ca2+,[W12O40(OH)2]10–; Ca2+,H[W12O40(OH)2]9–; Ca2+,H2[W12O40(OH)2]8–; Ca2+,H3[W12O40(OH)2]7–; [W12O38(OH)2]6–; and H[W12O38(OH)2]5– were calculated using the Pitzer method. The formation of particles with a ratio of Сa2+:[W12O40(OH)2]10–=1:1 and Сa2+:[W6O20(OH)2]6–=1:1 in the solutions was shown by the conductometric titration method. The crystals of calcium paratungstate B Ca5[W12O40(OH)2]30H2O were synthesized from Na2WO4 solution acidified to acidity Z = 1.00. By using ATR-FTIR and Raman spectroscopies, it was shown that the isopolyanion in the composition of the salt belongs to the structural type of paratungstate B. The structure of Ca5[W12O40(OH)2]30H2O was determined by single crystal X-ray diffraction: monoclinic, P21/n, a=15.3619(4) Å, b=11.7537(3) Å, c=18.1471(5) Å, =109.2950(10)0, V=3092.58(14) Å3, R1=0.0298, wR(F2)=0.1387.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"24 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465524","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

Solid-state exchange reactions during sintering of dispersed alumina 分散氧化铝烧结过程中的固态交换反应

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-48-54

S. Logvinkov, O. Borysenko, A. Ivashura, H. Shabanova, V.M. Shumejko, A. Korohodska, N. S. Tsapko

{"title":"Solid-state exchange reactions during sintering of dispersed alumina","authors":"S. Logvinkov, O. Borysenko, A. Ivashura, H. Shabanova, V.M. Shumejko, A. Korohodska, N. S. Tsapko","doi":"10.32434/0321-4095-2024-152-1-48-54","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-48-54","url":null,"abstract":"In this article, the mechanism of sintering of Al2O3 in the presence of small amounts of Na2O and CaO was investigated. Based on the results of the electron microscopy, the granulometry and morphological features of the particles of the studied alumina were established. The uniform nature of the distribution of sodium-containing phases was revealed, in contrast to silicon-containing ones, and the dislocation of submicron particles from calcium-containing phases was determined mainly on the basal planes of relatively large corundum particles. It was shown that such an arrangement of calcium-containing phases promotes the formation of a dense layered microstructure during sintering, especially in the presence of -alumina. The general pattern of the branched mechanism of the reaction phase formation during the sintering of the compositions in the Na2O–СаО–Al2O3 system was illustrated by a diagram explaining the trend of physicochemical processes and the feasibility of using specific types of dispersed alumina for technologies of corundum products and refractory concretes with different contents of aluminous cements.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"137 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465712","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

Intramolecular cyclization of the product of iodo-alkoxylation with 3,4-dihydro-2H-pyrano dimethylacetylene carbinol and with its Csp-substituted derivatives 碘烷氧基化产物与 3,4-二氢-2H-吡喃二甲基乙炔甲醇及其 Csp 取代衍生物的分子内环化反应

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-109-114

G. Talybov, F.V. Yusubov, Sh.M. Eyvazova, G. Mirzayeva

{"title":"Intramolecular cyclization of the product of iodo-alkoxylation with 3,4-dihydro-2H-pyrano dimethylacetylene carbinol and with its Csp-substituted derivatives","authors":"G. Talybov, F.V. Yusubov, Sh.M. Eyvazova, G. Mirzayeva","doi":"10.32434/0321-4095-2024-152-1-109-114","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-109-114","url":null,"abstract":"As a result of the research of the reaction of 3,4-dihydro-2H-pyrano-dimethylacetylene carbinol (also with its Csp-substituted derivatives) of iodo-alkylation on clinoptilolite in the presence of (NaK)4CaAl6Si30O72 and crystalline iodine, 3-iodine-2-[(2-methyl-4-organyl-but-3-in-2-yl)oxy]oxane was prepared. This method of preparation of heterocyclic compounds allows the reaction to be carried out in the absence of solvents, which reduces the amount of reagents and allows obtaining a product with high purity and high yield (67.5%). It was established that the latter under the conditions of the Kucherov reaction turn into heterocyclic compounds. Thus, effective regioselective methods for the synthesis of dioxin derivatives have been developed. This fact is probably related and is obviously explained by the intramolecular cyclization of the resulting intermediate-ketohydroxyester, i.e. tandem hydrolysis of C–I and hydration of CC bonds of the reaction products. The yield of 2-benzyl-3,3-dimethylhexahydro-4aH-piran[2,3-b][1,4]dioxin-2-ol is higher than that of structural analogues. It should also be noted that the synthesized compounds have an increased reactivity, and are rich in nucleophilic centers. Based on experimental data, it was established that the compounds obtained in this way are stable and do not undergo hydrolysis. Some physicochemical properties of the synthesized compounds were given, their composition and structure were confirmed by elemental analysis data, and all synthesized compounds were identified by IR and NMR spectroscopy.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"1513 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466735","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

Kinetic regularities of filtration drying of corn alcohol distillery stillage 玉米酒精蒸馏残渣过滤干燥的动力学规律

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-12-20

O. Ivashchuk, V. Atamanyuk, R. Chyzhovych, S.A. Barabakh

引用次数: 0

Synthesis and research of polyurethane urea with 2-(2-aminoethoxy)ethan-1-amine and 3-{2-[2-(3-aminopropoxy)ethoxy]ethoxy}propane-1-amine as macrochain extenders, and compositions with ifosphamide based on them 以 2-(2-氨基乙氧基)乙烷-1-胺和 3-{2-[2-(3-氨基丙氧基)乙氧基]乙氧基}丙烷-1-胺为大链延伸剂的聚氨酯脲的合成与研究，以及以它们为基础的含 ifosphamide 的组合物

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-70-80

S. Prymushko, N. Galatenko, R. Rozhnova, G. Kozlova, I. Gladyr, N.O. Danko

{"title":"Synthesis and research of polyurethane urea with 2-(2-aminoethoxy)ethan-1-amine and 3-{2-[2-(3-aminopropoxy)ethoxy]ethoxy}propane-1-amine as macrochain extenders, and compositions with ifosphamide based on them","authors":"S. Prymushko, N. Galatenko, R. Rozhnova, G. Kozlova, I. Gladyr, N.O. Danko","doi":"10.32434/0321-4095-2024-152-1-70-80","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-70-80","url":null,"abstract":"Polyurethane urea (PUU) was synthesized using macrochain extenders of 2-(2-aminoethoxy)ethan-1-amine (DA1) and 3-{2-[2-(3-aminopropoxy)ethoxy]ethoxy}propan-1-amine (DA3) at a molar ratio of 4,4'-diaminodiphenylmethane (DADP) to DA1 and DA3 as 30:70; 50:50; and 70:30. The tensile strength () of PUU is in the range of 0.74–2.21 MPa, and the relative elongation at break () is 27.4–1003%. According to the DSC method, the studied PUUs are single-phase systems. The glass transition temperature (Tg) of the PUU DA1 series is from 21.920C to –39.480C, and the glass transition temperature for the PUU DA3 is from –20.040C to –33.960C. Based on the synthesized PUUs, composite materials were prepared containing 1 wt.% of ifosfamide (IFO) (=0.74–2.21 MPa, and =31.8–276.3%). According to the results of thermophysical studies, the compositions with IFO are single-phase systems with Tg of –24.80C to –36.220C. Thus, the introduction of IFO into the composition leads to an increase in the packing density of the macrochain, a decrease in the size of the free volume and, consequently, a decrease in the mobility of the blocks in space and a decrease in Сp. Compositions with IFO are resistant to temperatures of ~2500C, which allows thermal sterilization before use. Using the HPLC-UV method, the dynamics of IFO release from samples of PUU compositions synthesized at a molar ratio of DADP:DA1 as 0.5:0.5 and DADP:DA3 as 0.7:0.3 was investigated. It was established that IFO is released within 60 days from compositions based on PUU DA3 in the amount of 29.6%, and from compositions based on PUU DA1 in the amount of 42% with respect to the total amount of IFO introduced. The resulting composites are promising materials for medicine as means of local prolonged therapeutic action.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"527 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469877","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

Calculations of solubility polytherms of phosphate salts in their mixtures with ammonium chloride and optimization of conditions for selective crystallization of ammonium orthophosphates 计算磷酸盐与氯化铵混合物的溶解度聚醚，优化正磷酸盐铵选择性结晶的条件

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-55-63

M.V. Nikolenko, K. Vasylenko, O.K. Grosu, I.M. Ryshchenko, O.I. Yurchenko

{"title":"Calculations of solubility polytherms of phosphate salts in their mixtures with ammonium chloride and optimization of conditions for selective crystallization of ammonium orthophosphates","authors":"M.V. Nikolenko, K. Vasylenko, O.K. Grosu, I.M. Ryshchenko, O.I. Yurchenko","doi":"10.32434/0321-4095-2024-152-1-55-63","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-55-63","url":null,"abstract":"The purpose of the work was to determine the optimal conditions for preparation of chemically pure salts of ammonium orthophosphates based on solutions formed after purification of extractable orthophosphoric acid from toxic impurities of d-metals, lead, arsenic and fluorine by their coprecipitation with calcium hydrogen phosphate. Based on the Sechenov's modified formula, a method for calculating the solubility polytherms of orthophosphate salts in their mixtures with ammonium chloride was proposed. For its experimental confirmation, studies were conducted to determine the concentrations of saturated solutions of a number of orthophosphate salts in their mixtures with ammonium chloride at temperatures of 14, 40 and 800C. The results of the calculations were well confirmed by experiments on selective crystallization. It was shown that the following chemically pure products can be obtained from solutions of mixtures of (NH4)2HPO4 and NH4Cl by the methods of isothermal-isohydric crystallization: (NH4)2HPO4 (with a yield of up to 79.5%) and NH4H2PO4 (with a yield of up to 52.4%). Measurements of the concentrations of Cd(II), As(III), Cu(II), Pb(II) and fluorine in the synthesized salts showed that they were at levels lower than the current requirements for maximum permissible concentrations. Therefore, these salts can be recommended for use as food additives.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"68 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463418","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

Extraction of soursop leaves (Annona Muricata L.) as a source of zinc corrosion inhibitor in sodium chloride medium 在氯化钠培养基中提取酸浆树叶（Annona Muricata L.）作为锌缓蚀剂的来源

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-4-11

Vikram Alexander, Rondang Tambun, Yamaniel Ginting, Bungaran Tambun

引用次数: 0

Degradation of diazine dye safranin T using potassium persulfate activated by ultrasonic treatment and MnFe2O4 spinel nanoparticles 利用超声波处理激活的过硫酸钾和 MnFe2O4 尖晶石纳米颗粒降解重氮染料黄花苷 T

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-99-108

Yu. Sukhatskiy, Tetiana Dmytrenko, M. Shepida, M. Sozanskyi, Zenovii Znak

{"title":"Degradation of diazine dye safranin T using potassium persulfate activated by ultrasonic treatment and MnFe2O4 spinel nanoparticles","authors":"Yu. Sukhatskiy, Tetiana Dmytrenko, M. Shepida, M. Sozanskyi, Zenovii Znak","doi":"10.32434/0321-4095-2024-152-1-99-108","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-99-108","url":null,"abstract":"An advanced oxidation process of ultrasound/MnFe2O4/K2S2O8 was developed for the degradation of diazine dye safranin T, according to which potassium persulfate was co-activated by ultrasonic (US) cavitation and MnFe2O4 spinel nanoparticles synthesized via co-precipitation in the ultrasonic field. A synthesis product annealed at a temperature of 4000C, with an average size of MnFe2O4 crystallites of about 7 nm, was used as a catalyst for the decomposition of potassium persulfate. Based on the results of experimental studies on the influence of various factors on the degree and rate constant of safranin T oxidative degradation, as well as considering energy and resource-saving principles, the rational conditions of oxidative degradation were determined as follows: the reaction medium temperature of 600C, the molar ratio of safranin T:K2S2O8=1:100, the catalyst loading of 0.1 g/l, and the specific power of the ultrasonic cavitation treatment of 51.0 W/l. It was established that under such conditions the oxidative degradation degree of safranin T was equal to 98.3%, and the rate constant was 1.510–3 s–1. The changes in the UV-Vis spectra of safranin T, namely a decrease in the intensity of absorption bands, both in the visible (at a wavelength of 520 nm) and in the UV (at a wavelength of 275 nm) regions of the spectrum, confirmed the degradation of safranin T. In addition, the absence of the appearance of new peaks in the visible and UV regions of the spectrum indicated mineralization of the dye.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"1509 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466739","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

Atomic absorption determination of copper and zinc in pharmaceutical preparations 原子吸收法测定药物制剂中的铜和锌

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2024-02-01 DOI: 10.32434/0321-4095-2024-152-1-115-121

O.I. Yurchenko, T. Chernozhuk, M.V. Nikolenko, O. Baklanov, O. A. Kravchenko

{"title":"Atomic absorption determination of copper and zinc in pharmaceutical preparations","authors":"O.I. Yurchenko, T. Chernozhuk, M.V. Nikolenko, O. Baklanov, O. A. Kravchenko","doi":"10.32434/0321-4095-2024-152-1-115-121","DOIUrl":"https://doi.org/10.32434/0321-4095-2024-152-1-115-121","url":null,"abstract":"The effect of Triton X-100 surface-active substance on the value of the analytical signal during the atomic absorption determination of copper and zinc was studied. It was shown that the maximum value of the analytical signal in the determination of analytes is achieved when Triton X-100 is used at a mass fraction of 5%. The sensitivity of the atomic absorption determination of copper increases by 1.74 times and that of zinc by 1.58 times. Sample preparation of pharmaceutical substances was carried out using ultrasound treatment. The most complete extraction of metals was achieved when the samples were treated with ultrasound for 25 minutes, and homogeneous solutions were obtained. The use of acetylacetonates of metals as standard samples of the composition increased the accuracy of copper and zinc determination due to the similarity of the calibration and analyzed solutions. The correctness of the result of the atomic absorption analysis was checked by the \"injected-found out\" method and by varying the weight of the sample. It was established that the systematic error is not significant. The limits of detection of copper (Cmin=0.002 g/ml, Ctheor=0.004 g/ml) and zinc (Cmin=0.003 g/ml, Ctheor=0.004 g/ml) were determined by the atomic absorption method, they are lower than those given in literature.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"763 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465806","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