Russian Journal of Physical Chemistry A最新文献_第9页

Vapor Pressures and Enthalpies of Vaporization of Malic Acid Esters 苹果酸酯的蒸汽压和汽化焓

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S003602442470225X

Yu. F. Yamshchikova, S. V. Portnova, E. L. Krasnykh

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Colloid-Chemical and Rheological Properties of Interfacial Adsorption Layers Formed by Water-Soluble and Poorly Soluble Block Copolymers of Ethylene Oxide and Propylene Oxide 环氧乙烷和环氧丙烷水溶性和难溶嵌段共聚物界面吸附层的胶体化学和流变性能

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S003602442470242X

I. A. Gritskova, I. D. Kovtun, G. A. Romanenko, A. M. Shulgin, S. M. Levachev, A. E. Kharlov, S. N. Chvalun

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Intercalation Effect of 1-(Hydroxyethyl)-3-methylimidazolium Chloride Ionic Liquid in Na-Montmorillonite: Structural Analysis, Thermal, Dielectric Behavior, and Molecular Dynamics Simulations 1-（羟乙基）-3-甲基咪唑氯离子液体在na -蒙脱土中的插层效应：结构分析、热、介电行为和分子动力学模拟

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702364

Ameur Akermi, Mohamed Belhocine, Fayçal Dergal, Riadh Bourzami, Mohammed Kebir, Abdelkader Ammari, Ahmed Haouzi, Somia Bouktab

{"title":"Intercalation Effect of 1-(Hydroxyethyl)-3-methylimidazolium Chloride Ionic Liquid in Na-Montmorillonite: Structural Analysis, Thermal, Dielectric Behavior, and Molecular Dynamics Simulations","authors":"Ameur Akermi, Mohamed Belhocine, Fayçal Dergal, Riadh Bourzami, Mohammed Kebir, Abdelkader Ammari, Ahmed Haouzi, Somia Bouktab","doi":"10.1134/S0036024424702364","DOIUrl":"10.1134/S0036024424702364","url":null,"abstract":"The present study reports on the synthesis of an ionic liquid-based nanocomposite and its characterization via structural, thermal and electrical analysis. The compound (M-EtOHmim) was prepared using green chemistry, where the organic cations exchange was achieved through the intercalation of 1‑(hydroxyethyl)-3-methylimidazolium chloride. The results showed that the molecules were successfully immobilized in the matrix yielding a good thermal stability up to 260°C. The DFT computation optimization was carried out to identify the adsorption mechanism. On the other hand, the electrical conductivity analysis revealed that charge transport is strongly related to structural defects and thermal energy. Accordingly, the corresponding electrical parameters were determined. It is evident that the modifications of montmorillonite with ionic liquid significantly changes the physicochemical properties of M-EtOHmim nanocomposite, which can be used in various fields.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 13","pages":"3116 - 3133"},"PeriodicalIF":0.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Inhibitory Protection of Low-Carbon Steel in a Flow of Sulfuric Acid Solution Containing Iron(III) Sulfate 低碳钢在含硫酸铁（III）硫酸溶液流动中的抑制保护作用

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702273

Ya. G. Avdeev, A. V. Panova, T. E. Andreeva

{"title":"Inhibitory Protection of Low-Carbon Steel in a Flow of Sulfuric Acid Solution Containing Iron(III) Sulfate","authors":"Ya. G. Avdeev, A. V. Panova, T. E. Andreeva","doi":"10.1134/S0036024424702273","DOIUrl":"10.1134/S0036024424702273","url":null,"abstract":"Corrosion of low-carbon steel in a flow of H2SO4 solutions containing Fe2(SO4)3 was studied, including media with additions of corrosion inhibitors—catamine AB (a mixture of quaternary ammonium salts) and IFKhAN-92 (3-substituted derivative of 1,2,4-triazole). In these media, partial reactions of anodic ionization of iron and cathodic reduction of H+ and Fe(III) cations occur on steel. The former two reactions are kinetically controlled, while the latter is diffusion-controlled. The accelerating effect of Fe2(SO4)3 on steel corrosion in an H2SO4 solution is primarily due to the reduction of Fe(III). In contrast, in the inhibited acid, the accelerating effect of Fe(III) cations affects all partial reactions of steel. Data on corrosion of low-carbon steel in the flow of the given media, obtained from the mass loss of the metal samples, are in satisfactory agreement with the results of the study of partial electrode reactions. Steel corrosion in a flow of H2SO4 solutions, including in the presence of inhibitors, is accelerated by Fe2(SO4)3. In these solutions, steel corrosion is determined by the convective factor, which is characteristic of diffusion-controlled processes. The IFKhAN-92 inhibitor, unlike catamine AB, significantly slows down steel corrosion in the flow of H2SO4 solution containing Fe2(SO4)3. The reason for the higher inhibitory effects shown by IFKhAN-92 for steel in these solutions compared to catamine AB is the more significant slowdown of the partial electrode reactions of the metal.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 13","pages":"3017 - 3026"},"PeriodicalIF":0.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Thermochemistry of Dissolution of Cobalt Tetra-4-carboxymetallophthalocyanine in Aqueous Solutions of Potassium Hydroxide at 298.15 K 四羧基金属酞菁钴在298.15 K氢氧化钾水溶液中溶解的热化学性质

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702339

P. D. Krutov, V. E. Maizlish, O. N. Krutova, M. I. Bazanov, V. V. Chernikov, A. V. Volkov, E. E. Kiptikova

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Micellar Effect on the Oxidation of L-sorbose by Imidazolium Fluorochromate in the Presence of Sodium Dodecyl Sulfate in a 50% (v/v) Aqueous Acetic Acid Medium—a Kinetic and Mechanistic Study 十二烷基硫酸钠存在下咪唑氟铬酸盐在50% （v/v）醋酸水溶液中氧化l -山梨糖的胶束效应——动力学和机理研究

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702315

Ashish Tomar, Unik Arora, Jai Veer Singh

{"title":"Micellar Effect on the Oxidation of L-sorbose by Imidazolium Fluorochromate in the Presence of Sodium Dodecyl Sulfate in a 50% (v/v) Aqueous Acetic Acid Medium—a Kinetic and Mechanistic Study","authors":"Ashish Tomar, Unik Arora, Jai Veer Singh","doi":"10.1134/S0036024424702315","DOIUrl":"10.1134/S0036024424702315","url":null,"abstract":"The present work examined the micellar effect of sodium dodecyl sulfate (SDS) on the kinetics of L-sorbose by imidazolium fluorochromate (IFC) oxidant in a 50% (v/v) aqueous acetic acid (AcOH) medium with a consistent ionic strength under the conditions [L-sorbose] ( gg ) [IFC] at 303 K. Perchloric acid was used as the reaction mixture’s primary source of hydrogen ions. The reaction depicted a unit-order dependence on [IFC], [L-sorbose], and [HClO4]. The effect of sodium perchlorate salt and acrylonitrile were also studied. The oxidation rates decreased with an increase in the dielectric value (D) of the reaction medium, and the outcomes were in accordance with the Amis ((log {{k}_{1}}) and 1/D) and Kirkwood plots ((log {{k}_{1}}) and (D – 1)/(2D + 1)). The reaction showed significant catalysis even before reaching the critical micelle concentration (CMC). However, the observed rate constants stabilized at higher SDS concentrations exceeding the CMC. Piszkiewicz’s cooperativity model was employed to describe the surfactant catalysis. The binding constant (KD), rate constants, cooperativity index (n), and various thermodynamic parameters in the presence of SDS were evaluated. The products were identified as the lactone of C5-aldonic acid and formaldehyde. Based on the observed findings, a theoretical mechanistic pathway was suggested.","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"98 13","pages":"3078 - 3087"},"PeriodicalIF":0.7,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Isobaric (Vapor + Liquid) Equilibria for 2-Methylthiophene with 1-Octene, Cyclohexene, 2,3-Dimethyl-1-butene, and 2,3-Dimethyl-2-butene at 90.00 kPa 2-甲基噻吩与1-辛烯、环己烯、2,3-二甲基-1-丁烯和2,3-二甲基-2-丁烯在90.00 kPa下的等压平衡（蒸气+液体）

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702534

Zhe Wang, Junzhi Li, Wei Zhao, Xiao Liang Li

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Heterogeneous Catalytic Hydrogenation-Dehydrogenation of Aromatic Compounds As a Basis of Accumulation, Storage, and Production of Chemically Pure Hydrogen 芳香族化合物的多相催化加氢-脱氢作为化学纯氢积累、储存和生产的基础

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702285

A. N. Kalenchuk, V. I. Bogdan, L. M. Kustov, Teng He

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Physicochemical Properties and Functioning of Negative Electrodes with Lead-Based Coatings as Parts of Reserve Chemical Power Sources 备用化学电源用铅基涂料负极的物理化学性质及功能研究

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702704

P. A. Shcheglov, D. A. Samsonov, A. B. Pavlenkov, T. L. Kulova, A. Yu. Rychagov, A. M. Skundin, E. Yu. Postnova

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Detection of Magnetocaloric Effects in BaFe11TiO19 Both Directly and Inversely BaFe11TiO19的正、反磁热效应检测

IF 0.7 4区化学

Russian Journal of Physical Chemistry A Pub Date : 2025-01-17 DOI: 10.1134/S0036024424702728

Mahmoud A. Hamad, Hatem R. Alamri

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