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Russian Journal of Physical Chemistry A最新文献

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The Features of Crystallization of Aluminum Phosphate Gels with Various Ratios of Di-n-propylamine/Al2O3 in the Micro-Mesoporous AlPO4-11 Molecular Sieve 二正丙胺/Al2O3不同配比的磷酸铝凝胶在微介孔AlPO4-11分子筛中的结晶特性
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702595
M. R. Agliullin, V. Yu. Guskov, R. Z. Kuvatova, V. V. Lazarev, B. I. Kutepov
{"title":"The Features of Crystallization of Aluminum Phosphate Gels with Various Ratios of Di-n-propylamine/Al2O3 in the Micro-Mesoporous AlPO4-11 Molecular Sieve","authors":"M. R. Agliullin,&nbsp;V. Yu. Guskov,&nbsp;R. Z. Kuvatova,&nbsp;V. V. Lazarev,&nbsp;B. I. Kutepov","doi":"10.1134/S0036024424702595","DOIUrl":"10.1134/S0036024424702595","url":null,"abstract":"<p><b>Abstract</b>—The crystallization of aluminophosphate gels prepared using aluminum isopropoxide with di‑<i>n</i>-propylamine/Al<sub>2</sub>O<sub>3</sub> was equal to 1.0, 1.4, and 1.8. It has been shown that changing the template/Al<sub>2</sub>O<sub>3</sub> ratio in reaction gels leads to the formation of various intermediate phases during crystallization into the AlPO<sub>4</sub>-11 molecular sieve. A method for controlling its secondary porous structure based on regulating the template/Al<sub>2</sub>O<sub>3</sub> ratio is proposed in reaction gels.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"58 - 66"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638441","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}
引用次数: 0
Photocatalytic Oxidation of Oxalic Acid with Oxygen and Ozone in an Aqueous Solution 水溶液中氧和臭氧光催化氧化草酸的研究
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702716
A. V. Levanov, A. V. Lapina, O. Ya. Isaikina
{"title":"Photocatalytic Oxidation of Oxalic Acid with Oxygen and Ozone in an Aqueous Solution","authors":"A. V. Levanov,&nbsp;A. V. Lapina,&nbsp;O. Ya. Isaikina","doi":"10.1134/S0036024424702716","DOIUrl":"10.1134/S0036024424702716","url":null,"abstract":"<p><b>Abstract</b>—An experimental study has been carried out on the mineralization of oxalic acid H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> and other oxidation-resistant organic compounds in aqueous solutions under the influence of oxygen, ozone, and ultraviolet radiation. It was found that in acidic solutions H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> does not oxidize under the influence of ozone or UV irradiation in the presence of oxygen; when exposed simultaneously to O<sub>3</sub> + UV it has a low rate of oxidation. The possibility of photocatalysis of the mineralization process by Mn<sup>2+</sup>, MnO<span>(_{4}^{ - })</span>, Fe<sup>3+</sup>, Co<sup>2+</sup>, BrO<span>(_{3}^{ - })</span>, or IO<span>(_{3}^{ - })</span> ions was studied The most effective photocatalysts are Fe<sup>3+</sup> ions: in their presence and under UV irradiation, a fairly rapid oxidation of oxalic acid to CO<sub>2</sub> occurs, as under the influence of O<sub>3</sub> and O<sub>2</sub>. The conditions for maximum ozone conversion during photomineralization of oxalic acid have been found. The possibility of oxidative destruction of a more oxidation-resistant substrate, acetic acid, is shown during ozonation and UV irradiation of solutions with Fe(III) and H<sub>2</sub>C<sub>2</sub>O<sub>4</sub> additives.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"111 - 119"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638145","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}
引用次数: 0
Introducing Catonization Agents in the Soft Ionization of Short-Chain Peptides: Laser Desorption and Electrospraying 介绍短链肽软电离中的阳离子化剂：激光解吸和电喷涂
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702686
E. S. Kuznetsova, I. S. Pytsky, A. K. Buryak
{"title":"Introducing Catonization Agents in the Soft Ionization of Short-Chain Peptides: Laser Desorption and Electrospraying","authors":"E. S. Kuznetsova,&nbsp;I. S. Pytsky,&nbsp;A. K. Buryak","doi":"10.1134/S0036024424702686","DOIUrl":"10.1134/S0036024424702686","url":null,"abstract":"<p>A mass spectrometric study is performed of the ionization of short peptides triglycine, alanyl glutamine and prolyl leucine via electrospray ionization (ESI) and surface-activated laser desorption/ionization (SALDI) using copper sulfate crystal hydrate. It is shown that having copper ions in a solution during ERI ionization initiates the aggregation of peptide molecules with the formation of large associates of up to 7–8 peptide molecules. The effect the nature of peptides has on that of ionization is studied. During SALDI ionization, there is competitive cationization of peptide molecules by copper ions, accompanied by the formation of ions M + Cu<sup>+</sup>. The fragmentation of peptides and the copper cationization of decarboxylation products are also characteristic.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"98 - 104"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638148","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}
引用次数: 0
Thermochemistry of the Dissolution of Tetra-4-carboxyphthalocyanine Hydroxyaluminum in Aqueous Solutions of KOH at 298.15 K 四-4-羧基酞菁羟铝在298.15 K KOH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 : 2025-03-17 DOI: 10.1134/S0036024424702479
P. D. Krutov, V. E. Maizlish, O. N. Krutova, T. R. Usacheva, M. I. Bazanov, M. V. Chislov, E. E. Kiptikova
{"title":"Thermochemistry of the Dissolution of Tetra-4-carboxyphthalocyanine Hydroxyaluminum in Aqueous Solutions of KOH at 298.15 K","authors":"P. D. Krutov,&nbsp;V. E. Maizlish,&nbsp;O. N. Krutova,&nbsp;T. R. Usacheva,&nbsp;M. I. Bazanov,&nbsp;M. V. Chislov,&nbsp;E. E. Kiptikova","doi":"10.1134/S0036024424702479","DOIUrl":"10.1134/S0036024424702479","url":null,"abstract":"<p>A study is performed of tetra-4-carboxyphthalocyanine hydroxyaluminum. The thermal effects of the dissolution of crystalline phthalocyanine in aqueous solutions with different concentrations of KOH are determined via direct calorimetry at a temperature of 298.15 K. The thermal effects of stepwise dissociation AlOHРс(4-COOH)<sub>4</sub> are calculated using the HEAT computer program. The enthalpies of combustion of the studied compound are determined with an IKA C6000 isoperibol calorimeter (bomb calorimetry) and used to calculate the standard enthalpies of formation of AlOHРс(4-COOH)<sub>4</sub> along with products of its dissociation in aqueous solutions.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"19 - 23"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638181","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}
引用次数: 0
Erratum to: Solid-Phase Equilibrium Diagram of the Bi2Te3-Rich Corner of MnTe–Bi2Te3–Te System and Thermodynamic Properties of the Intermediate Phases MnTe-Bi2Te3-Te体系富bi2te3角固相平衡图及中间相热力学性质勘误
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024425010017
Elnur N. Orujlu, Eldar I. Ahmadov, Najaf I. Orujov, Mahammad B. Babanly
{"title":"Erratum to: Solid-Phase Equilibrium Diagram of the Bi2Te3-Rich Corner of MnTe–Bi2Te3–Te System and Thermodynamic Properties of the Intermediate Phases","authors":"Elnur N. Orujlu,&nbsp;Eldar I. Ahmadov,&nbsp;Najaf I. Orujov,&nbsp;Mahammad B. Babanly","doi":"10.1134/S0036024425010017","DOIUrl":"10.1134/S0036024425010017","url":null,"abstract":"","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"130 - 130"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638146","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}
引用次数: 0
Towards Semiempirical Analysis of Exchange Interactions in Metalorganic Frameworks with Open d-Shell Ions 开放d壳层离子金属有机骨架中交换相互作用的半经验分析
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702601
A. L. Tchougreéff
{"title":"Towards Semiempirical Analysis of Exchange Interactions in Metalorganic Frameworks with Open d-Shell Ions","authors":"A. L. Tchougreéff","doi":"10.1134/S0036024424702601","DOIUrl":"10.1134/S0036024424702601","url":null,"abstract":"<p>The MagAîxTic program package, which is based on the theory of effective Hamiltonian for crystal field and is used to estimate the parameters of effective exchange between magnetic moments in the <i>d</i>‑shells, is augmented by the smaller ferromagnetic contributions to those parameters. The updated package is tested based on the example of the three-nuclear basic acetates of iron(III) and chromium(III) of the composition <span>(mu )</span><sup>3</sup>-O<i>M</i><sub>3</sub>(RCOO)<sub>6</sub>, as well as of their mixed analogs. It is shown that the developed/upgraded package is able to reproduce either orders of magnitude of the exchange parameters in the range of dozens cm<sup>–1</sup> or their trends upon transition from one metal to another.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"67 - 74"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638439","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}
引用次数: 0
Synchrotron Radiation in Solving Problems of Optimizing Properties of Aluminum Powders As Metallic Fuels and Raw Materials for Additive Technologies 同步辐射在解决铝粉金属燃料和增材工艺原料性能优化问题中的应用
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702455
D. A. Eselevich, V. G. Shevchenko, Z. S. Vinokurov, B. P. Tolochko
{"title":"Synchrotron Radiation in Solving Problems of Optimizing Properties of Aluminum Powders As Metallic Fuels and Raw Materials for Additive Technologies","authors":"D. A. Eselevich,&nbsp;V. G. Shevchenko,&nbsp;Z. S. Vinokurov,&nbsp;B. P. Tolochko","doi":"10.1134/S0036024424702455","DOIUrl":"10.1134/S0036024424702455","url":null,"abstract":"<p>Thermogravimetry (TG), differential scanning calorimetry (DSC), and the X-ray diffraction of synchrotron radiation are used to study the reactivity and formation of phases during the oxidation of aluminum-based powders in the course of programmed heating. It is shown that the combination of thermal and phase analysis using synchrotron radiation gives an idea of the mechanism of rapid oxidation in order to accelerate the selecting of modifiers to optimize the properties of dispersed systems based on aluminum, and the technological parameters of synthesizing materials with controlled properties.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"1 - 18"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638152","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}
引用次数: 0
Vapor–Liquid Equilibrium Measurement of Methanol–Chloroform–Tetrahydrofuran and Methanol–Chloroform–Tetrahydrofuran–Dimethyl Sulfoxide Mixtures at 101.32 kPa 101.32 kPa下甲醇-氯仿-四氢呋喃和甲醇-氯仿-四氢呋喃-二甲基亚砜混合物气液平衡测量
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702509
V. I. Zhuchkov, V. M. Raeva, D. A. Ryzhkin
{"title":"Vapor–Liquid Equilibrium Measurement of Methanol–Chloroform–Tetrahydrofuran and Methanol–Chloroform–Tetrahydrofuran–Dimethyl Sulfoxide Mixtures at 101.32 kPa","authors":"V. I. Zhuchkov,&nbsp;V. M. Raeva,&nbsp;D. A. Ryzhkin","doi":"10.1134/S0036024424702509","DOIUrl":"10.1134/S0036024424702509","url":null,"abstract":"<p><b>Abstract</b>—The vapor–liquid equilibrium of methanol–chloroform–tetrahydrofuran mixtures of various compositions and methanol–chloroform–tetrahydrofuran–dimethyl sulfoxide mixtures with different dimethyl sulfoxide contents at 101.32 kPa were studied experimentally. A comparison of experimental and calculated values of the relative volatility of substances in four-component mixtures was carried out. The results of extractive distillation of ternary mixtures are predicted based on experimental data and calculated data obtained using the NRTL model.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"29 - 37"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638182","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}
引用次数: 0
Shielding and Electromagnetic Radiation-Absorbing Properties of Shugnite-Containing Materials 含疏辉石材料的屏蔽和电磁吸收性能
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702649
Yu. V. Samukhina, A. K. Buryak
{"title":"Shielding and Electromagnetic Radiation-Absorbing Properties of Shugnite-Containing Materials","authors":"Yu. V. Samukhina,&nbsp;A. K. Buryak","doi":"10.1134/S0036024424702649","DOIUrl":"10.1134/S0036024424702649","url":null,"abstract":"<p>Finely dispersed shungite is studied as an effective filler for composite materials. Experimental data are obtained on the effect the concentration of the filler of a composite material has on its characteristics of absorbing and shielding from electromagnetic radiation in the radio and microwave ranges. The data can be used to produce effective radio-absorbing materials and electromagnetic screens for protecting information and against unwanted effects of electromagnetic radiation in radio engineering and the military.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"90 - 93"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638149","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}
引用次数: 0
Dechlorination of Chloride–Sulfate Solutions Using Ozone 利用臭氧对氯化物-硫酸盐溶液进行脱氯
IF 0.7 4区 化学
Russian Journal of Physical Chemistry A Pub Date : 2025-03-17 DOI: 10.1134/S0036024424702558
A. V. Levanov, A. O. Orujev, O. Ya. Isaikina
{"title":"Dechlorination of Chloride–Sulfate Solutions Using Ozone","authors":"A. V. Levanov,&nbsp;A. O. Orujev,&nbsp;O. Ya. Isaikina","doi":"10.1134/S0036024424702558","DOIUrl":"10.1134/S0036024424702558","url":null,"abstract":"<p>Kinetic characteristics are determined for the release of chlorine during the oxidation of chloride ion in solutions Na<sup>+</sup>–H<sup>+</sup>–HSO<span>(_{4}^{ - })</span>–Cl<sup>−</sup>, Mg<sup>2+</sup>–H<sup>+</sup>–HSO<span>(_{4}^{ - })</span>–Cl<sup>−</sup>, Zn<sup>2+</sup>–H<sup>+</sup>–HSO<span>(_{4}^{ - })</span>–Cl<sup>−</sup>, Cu<sup>2+</sup>–H<sup>+</sup>–HSO<span>(_{4}^{ - })</span>–Cl<sup>−</sup>, Fe<sup>3+</sup>–H<sup>+</sup>–HSO<span>(_{4}^{ - })</span>–Cl<sup>−</sup>, Mg<sup>2+</sup>–H<sup>+</sup>–Cl<sup>−</sup>, and Ca<sup>2+</sup>–H<sup>+</sup>–Cl<sup>−</sup>. With similar experimental parameters, the rate of the reaction acquires considerably different values, depending on the nature of the added salt. This is due to the possible catalysis of the reaction between O<sub>3</sub> and the Cl<sup>−</sup>(aq) cations of some metals; the formation of chloride and sulfate metal complexes, which alters the actual concentrations of reagents; and a change in the solubility of ozone. The solubility of ozone, the values of the Henry constant, and the Sechenov coefficient are found for aqueous solutions of zinc sulfate and magnesium sulfate with concentrations of 0–1 M at temperatures of 20 and 25°C.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"38 - 43"},"PeriodicalIF":0.7,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638184","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}
引用次数: 0
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