Voprosy Khimii i Khimicheskoi Tekhnologii最新文献_第9页

Research on aspects of the extraction kinetics of metabolites of Сarlina acaulis while mixing Сarlina黄芩混合过程中代谢物的提取动力学研究

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-03-01 DOI: 10.32434/0321-4095-2023-146-1-3-10

О. Fedoryshyn, R. Petrina, А.S. Кrvavych, К.S. Кniazieva, Z. Hubrii, V.М. Аtamanyuk

{"title":"Research on aspects of the extraction kinetics of metabolites of Сarlina acaulis while mixing","authors":"О. Fedoryshyn, R. Petrina, А.S. Кrvavych, К.S. Кniazieva, Z. Hubrii, V.М. Аtamanyuk","doi":"10.32434/0321-4095-2023-146-1-3-10","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-146-1-3-10","url":null,"abstract":"This study reports the features of the mass transfer kinetics during the extraction of phenolic compounds and flavonoids from the Carlina acaulis roots. The extraction process of target compounds was optimized and the mathematical model was selected, which implies that the mass transfer of target compounds occurs during the extraction of the solid phase (plant cells) into the liquid phase (extractant). The most effective hydrodynamic conditions for the production of phenolic compounds and flavonoids were determined. An experimental verification of the kinetic equation was carried out by extracting the target compounds from the studied object of various sizes in a vessel with a stirrer using 40% and 70% ethanol as an extractant. The results of the experiment indicated that the target compounds extraction process, namely phenolic compounds and flavonoids from the Carlina acaulis roots, proceeds more efficiently under stirring conditions when using particles with a diameter of 2 mm and 70% ethanol as an extractant. The experimental data are in good agreement with the theoretically calculated results, which confirms the appropriateness of using the selected mathematical model. Studies of the kinetics of Carlina acaulis roots extraction process will allow minimizing the losses of target compounds, and improving the extraction process and the quality of final product.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79348128","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

Catalytic oxidation of m-xylene by ozone in the liquid phase 臭氧在液相中催化氧化间二甲苯

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-03-01 DOI: 10.32434/0321-4095-2023-146-1-82-88

E. V. Potapenko, I. P. Isaenko

{"title":"Catalytic oxidation of m-xylene by ozone in the liquid phase","authors":"E. V. Potapenko, I. P. Isaenko","doi":"10.32434/0321-4095-2023-146-1-82-88","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-146-1-82-88","url":null,"abstract":"This work reports the selective oxidation of m-xylene by ozone in the liquid phase. It is established that the main direction of the reaction is the destruction of the aromatic system when ozone interacts with m-xylene. It is shown that the selective oxidation of m-xylene by ozone occurs at the temperature of 200С in the system Mn(II)–СН3СООН–Н2SO4 with the yield of 3-toluic acid equal to 75–78%. 3-toluyl alcohol and 3-toluyl aldehyde are formed as intermediate oxidation products. At the deeper stages of the reaction, after complete consumption of m-xylene, the following oxidation products of the second methyl group appear in the system: 3-carboxybenzaldehyde, 3-carboxybenzyl alcohol, and isophthalic acid. It is found that the intermediate products are more resistant to the destructive action of O3 than the original m-xylene. The yield of oxidation products with a preserved aromatic system depends on the nature of the functional group. The kinetics of the main stages of the catalytic oxidation of m-xylene and intermediate reaction products is studied. A mechanism of catalysis is proposed, according to which the role of ozone is to generate an oxidized form of the metal, and selective oxidation occurs when the substrate interacts with Mn(III). An increase in the reaction temperature contributes to an increase in the selectivity of the process. Still, it leads to an increase in the depth of oxidation and, accordingly, the concentration of isophthalic acid.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"189 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79487313","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

Microwave technology of thermal insulation materials based on liquid glass as an alternative to foam glass 微波技术的隔热材料以液态玻璃作为泡沫玻璃的替代品

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-03-01 DOI: 10.32434/0321-4095-2023-146-1-26-33

T. Rymar

{"title":"Microwave technology of thermal insulation materials based on liquid glass as an alternative to foam glass","authors":"T. Rymar","doi":"10.32434/0321-4095-2023-146-1-26-33","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-146-1-26-33","url":null,"abstract":"An energy-saving and environmentally friendly microwave technology is proposed for producing composite thermal insulation materials based on liquid glass, which are not inferior to foam glass in terms of their properties. It is shown that the use of microwave radiation allows fabricating volumetrically grouted materials by simultaneous porization of the granules and the binder. In such a way, a monolithic structure of products is formed, where the space between the granules is filled with the swollen binder limited by a denser surface layer. It has been proven that the use of microwave radiation allows achieving heating and softening of the entire mass of the liquid-glass composition due to the internal acceleration of the movement of water molecules, their friction, and release of thermal energy, and not due to high temperature from the outside. This has made it possible to carry out swelling at a lower temperature and during a much shorter heat treatment time than at the traditional convective heating, because the sample layer is heated almost instantly under microwave exposure and the liquid glass composition reaches a pyroplastic state in a few seconds. It has been determined that a part of the energy of electromagnetic radiation is transformed into heat, which contributes to intensive porization with the volumetric expansion of the liquid-glass composition. The other part of the energy is directed to structural changes in the material leading to the improvement of its properties, which is associated with the \"non-thermal\" microwave radiation action.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76132410","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

Comparative analysis of the impact of synthetic additives and phosphatide concentrate on the adhesive properties of road petroleum bitumen 合成添加剂与浓缩磷脂对公路石油沥青粘接性能影响的对比分析

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-03-01 DOI: 10.32434/0321-4095-2023-146-1-18-25

Inna O. Lavrova, I. M. Demidov, G. Cherkashina, V. Lebedev, N.A. Zabiyaka

引用次数: 0

Hydroamination of n-butanol on Cu-containing anion-modified catalysts 含cu阴离子改性催化剂上正丁醇的氨基化反应

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-03-01 DOI: 10.32434/0321-4095-2023-146-1-50-55

V.V. Bilov, V. Markov, V.V. Shipilo

{"title":"Hydroamination of n-butanol on Cu-containing anion-modified catalysts","authors":"V.V. Bilov, V. Markov, V.V. Shipilo","doi":"10.32434/0321-4095-2023-146-1-50-55","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-146-1-50-55","url":null,"abstract":"The purpose of the work is to establish the relationship between the composition of new Cu-containing anion-modified compositions and their catalytic potential in the synthesis of dibutylamine, which is an important intermediate for the production of such significant products as medicines, insecticides, vulcanization accelerators for rubber compounds, multifunctional corrosion inhibitors, etc. Composite materials were prepared by thermal decomposition of a copper-ammonia-carbonate solution in the presence of chromate, molybdate, aluminum tungstate, aluminum metahydroxide, and lanthanum carbonate salts. The active state of the new catalysts was formed under the conditions of low-temperature heat treatment (2500C) and reduction (2400C), which ensure incomplete removal of modifying OH– and СО32– anions. The study of the catalytic efficiency of new samples in the process of vapor-phase hydroamination of n-butanol was carried out in a flow reactor at the n-butanol:ammonia:hydrogen molar ratio equal to 1.0:2.0:6.0, an alcohol load of 0.4 h–1 and temperatures of 200–2400C. Among the catalysts tested, the sample whose precursor was a mixed \"compound\" salt hydroxocarbonate copper-aluminum chromate showed the highest performance as follows: alcohol conversion and selectivity to the target dibutylamine of 86.3% and 82.7%, respectively (at 2200C). The least active was the sample, the precursor of which was a mixed \"compound\" salt hydroxocarbonate copper-lanthanum carbonate. Factors that can affect the catalytic efficiency of new materials were analyzed.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86996371","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

Processing of heavy high-viscosity oil mixtures from the eastern region of Ukraine: technological aspects 乌克兰东部地区重质高粘度混合油的加工:技术方面

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-03-01 DOI: 10.32434/0321-4095-2023-146-1-40-49

T. Yarmola, P. Topilnytskyy, V.J. Skorokhoda, B. Korchak

{"title":"Processing of heavy high-viscosity oil mixtures from the eastern region of Ukraine: technological aspects","authors":"T. Yarmola, P. Topilnytskyy, V.J. Skorokhoda, B. Korchak","doi":"10.32434/0321-4095-2023-146-1-40-49","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-146-1-40-49","url":null,"abstract":"The article presents an analysis of reserves and processing of heavy high-viscosity crude oils in Ukraine and the world. A study of the physicochemical properties of heavy high-viscosity oils from the Yablunivske field, Poltava region of Ukraine, taken from various wells was conducted. For further research in order to develop a basic manufacturing scheme for the processing of heavy high-viscosity oils, a mixture of heavy high-viscosity oils from the Yablunivske field was used in certain ratios and its physicochemical properties were determined. As a result of the vacuum distillation of a mixture of heavy high-viscosity oils, the following products were obtained: broad gasoline fraction (fraction boiled up to 2000C), broad diesel fraction (fraction 200–3600C) and the rest of the process (fraction >3600C). An analysis of the physicochemical properties of the prepared fractions was also carried out. It was established that the products obtained from the mixture of heavy high-viscosity oils of the Yablunivske field can be used as raw materials for the production of commercial gasoline and diesel fuels. The rest of the process can serve as raw materials for the production of road bitumen. According to the analysis of the physicochemical properties of the products obtained by vacuum distillation of a mixture of heavy high-viscosity oils, the basics of the processing technology of a mixture of heavy high-viscosity oils of the Yablunivske field were developed. In particular, a manufacturing scheme and a flow chart of the process were proposed, and the material balance was calculated.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86542851","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

Study of the combined effect of magnetic field and the addition of new composition on the rheological parameters of high paraffin oil 磁场与新组分的加入对高石蜡油流变参数的联合影响研究

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2023-03-01 DOI: 10.32434/0321-4095-2023-146-1-11-17

H. Gurbanov, A. Gasimzade

{"title":"Study of the combined effect of magnetic field and the addition of new composition on the rheological parameters of high paraffin oil","authors":"H. Gurbanov, A. Gasimzade","doi":"10.32434/0321-4095-2023-146-1-11-17","DOIUrl":"https://doi.org/10.32434/0321-4095-2023-146-1-11-17","url":null,"abstract":"The article is dedicated to the study of separate and joint impact of the magnetic field and the addition of newly prepared composition on the rheological properties of high-paraffin emulsion oil. The new composition has been prepared in a 1:1 ratio of Difron-4201 to BAF-1 reagents under laboratory conditions. The sample taken from well number 208 of the SOCAR oil field has been used as high paraffin oil. Separate and joint impact of the magnetic field and composition on the freezing temperature, effective viscosity and amount of asphaltene-resin-paraffin deposits of high-paraffin oil has been studied. It has been determined that the joint impact of the magnetic field and the addition of composition on all three parameters is more effective that the use of a separate impact. Thus, the separate action of magnetic field and composition resulted in reducing the oil freezing temperature from +170С to +40C and +20C, respectively, while the freezing temperature of oil drops to –20C under the joint impact. The effective viscosity of oil under the impact of the magnetic field is 0.66 Pas; it is 0.44 Pas under the impact of the addition of composition; and it is equal to 0.003 Pas under the joint impact. The separate and combined impact of the magnetic field and the composition addition on the amount of paraffin deposits have been studied by \"coldfinger test\" method. It has been determined that the effect of the magnetic field on paraffin deposits accumulated on the surface of the coldfinger test is 52%, the effect of the composition addition is 74%, and the effect of the combined impact is 90%.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79504419","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

Comparative investigation of interaction of the dirhenium(III) cluster compound with different nucleotide content DNAs 不同核苷酸含量的dna与dihenium (III)簇化合物相互作用的比较研究

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2022-12-01 DOI: 10.32434/0321-4095-2022-145-6-115-120

N. Shtemenko, O. Holichenko, O. Shtemenko

{"title":"Comparative investigation of interaction of the dirhenium(III) cluster compound with different nucleotide content DNAs","authors":"N. Shtemenko, O. Holichenko, O. Shtemenko","doi":"10.32434/0321-4095-2022-145-6-115-120","DOIUrl":"https://doi.org/10.32434/0321-4095-2022-145-6-115-120","url":null,"abstract":"Comparative investigation of interaction of bis-dimethylsulfoxide-cis-tetrachlorodi--pivalatodirhenium(III) (I) with two eukaryotic DNAs with different nucleotide content was performed by the method of UV-titration. Eukariotic deoxyribonucleic acids from calf thymus (CT DNA, 40% GC) and from herring sperm (HS DNA, 44% GC) were the matter of investigation. We observed an increase in the absorption of both DNAs with increasing the concentration of added solutions of I. Electronic absorption spectra traces of both examples of DNA exhibited pronounced hyperchromism in the presence of increasing amounts of I. The calculated binding constants were KbCT DNA=2221 l/mol and KbHS DNA=3238 l/mol. Hyperchromicity of the complexes DNA-I was different for the investigated DNAs (14.413% and 81.943% for CT DNA and HS DNA, respectively). The conclusions was made that addition of I in low concentrations to DNA led to formation of complexes DNA-I with following unwinding or unfolding of the helix that did not reach 50% of unfolding. At high concentrations of I, the preferable interaction took place with guanine; interaction of I with guanine nucleotides led to significant (more than 50%) of unfolding of guanine rich sequences. I was sensitive to the nucleotide content of DNA in high concentrations and strongly reacted with guanine reach sequences with selective and mighty unfolding abilities.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79138909","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

Basics of waste-free processing of sludge waste from "Cherkasy Khimvolokno" chemical plant Cherkasy Khimvolokno化工厂污泥废物无害化处理的基础

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2022-12-01 DOI: 10.32434/0321-4095-2022-145-6-108-114

Yulia Shaforost, R. Galagan, Ya. D. Korol, O. Lut

{"title":"Basics of waste-free processing of sludge waste from \"Cherkasy Khimvolokno\" chemical plant","authors":"Yulia Shaforost, R. Galagan, Ya. D. Korol, O. Lut","doi":"10.32434/0321-4095-2022-145-6-108-114","DOIUrl":"https://doi.org/10.32434/0321-4095-2022-145-6-108-114","url":null,"abstract":"We have carried out the laboratory study of the properties of zinc-containing sludge obtained after the recycling of waste from viscose fiber production via the calcium hydroxide method. A waste-free process of complex recycling of such sludge was developed. Based on this method, we developed the design and construction of a semi-industrial sludge processing located in the sludge storage facilities of \"Cherkasy Khimvolokno\" chemical plant. A scheme of complex processing of zinc sludge produced by \"Cherkasy Khimvolokno\" was offered. To completely remove organic compounds, the initial sludge was calcined in a muffle furnace at the temperature of 9000С for 1 hour. The recycling scheme was based on the treatment of roasted sludge with concentrated nitric acid. With this treatment, all soluble calcium, as well as iron and zinc, were transferred to the solution. The residual precipitate, which was insoluble in nitric acid and consisted mainly of calcium sulfate, was filtered off. The formed filtrate was alkalized to pH 4.2 to separate iron from zinc in the form of Fe(OH)3. Control of products at each stage of the process was carried out by X-ray fluorescence spectroscopy, X-ray diffraction, and chemical methods. Conditions of each stage in the laboratory process were specified. We proved the impossibility of waste-free sludge processing without roasting of its organic constituents. It was shown that the final products of such processing were the following: the powder for salt-affected soils reclamation, gypsum, ferric oxide, zinc oxide, metallic zinc, chemically precipitated chalk, and sodium nitrate.","PeriodicalId":23684,"journal":{"name":"Voprosy Khimii i Khimicheskoi Tekhnologii","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84252622","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

The study of the interaction of 2-chloro- and 2,3-dichloro-5(8)-RO-1,4-naphtoquinones with CH-acids 2-氯和2,3-二氯-5(8)- ro- 1,4-萘醌与ch -酸相互作用的研究

Voprosy Khimii i Khimicheskoi Tekhnologii Pub Date : 2022-12-01 DOI: 10.32434/0321-4095-2022-145-6-12-18

L. Bolibrukh, I. Hubytska, A. Karkhut, R. Konechna, S. Polovkovych, V. Novikov

引用次数: 0