Russian Journal of Inorganic Chemistry最新文献_第6页

Application of Vanadyl Alkoxoacetylacetonate in Formation of V2O5 Electrochromic Films 烷氧基乙酰丙酮酸钒酯在形成 V2O5 电致变色薄膜中的应用

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-31 DOI: 10.1134/s0036023624600904

P. Yu. Gorobtsov, A. S. Mokrushin, N. P. Simonenko, E. P. Simonenko, N. T. Kuznetsov

引用次数: 0

Transformation of the Surface of HfB2–SiC–C(graphene) Ultrahigh-Temperature Ceramics in a High-Velocity Flow of Dissociated Nitrogen HfB2-SiC-C (石墨烯) 超高温陶瓷表面在高速离解氮流中的转变

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-31 DOI: 10.1134/s0036023624600825

E. P. Simonenko, A. F. Kolesnikov, A. V. Chaplygin, A. S. Lysenkov, I. A. Nagornov, I. V. Lukomskii, S. S. Galkin, A. S. Mokrushin, N. P. Simonenko, N. T. Kuznetsov

{"title":"Transformation of the Surface of HfB2–SiC–C(graphene) Ultrahigh-Temperature Ceramics in a High-Velocity Flow of Dissociated Nitrogen","authors":"E. P. Simonenko, A. F. Kolesnikov, A. V. Chaplygin, A. S. Lysenkov, I. A. Nagornov, I. V. Lukomskii, S. S. Galkin, A. S. Mokrushin, N. P. Simonenko, N. T. Kuznetsov","doi":"10.1134/s0036023624600825","DOIUrl":"https://doi.org/10.1134/s0036023624600825","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The effect of a high-velocity flow of dissociated nitrogen on a sample of HfB2–30 vol % SiC ultrahigh-temperature ceramic materials modified with low amounts of reduced graphene oxide was studied to evaluate the potential of these materials in creating aerospace equipment intended for use in N2-based atmospheres. It was determined that, under the selected treatment conditions during a stepwise increase in the anode supply power of the plasma torch and, accordingly, in the acting heat flux at certain process parameters, the surface temperature of the sample sharply increases from ~1750 to 2000–2100°C. A further increase in the heat flux does not have an obvious and proportional effect on the surface temperature of the sample, which may indicate its high catalyticity with respect to surface recombination reactions of atomic nitrogen. It was shown that the surface layers of the material undergo a chemical transformation (removal of silicon-containing substances and formation of a new phase based on HfN), which is accompanied by a significant change in the microstructure (formation of dendrite-like structures), affecting the optical and catalytic characteristics of the surface.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"48 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141863658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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Spectral Properties of Tolane and Its Supramolecular Complexes in Solution and Silicate Hydrogel 溶液和硅酸盐水凝胶中的托兰及其超分子复合物的光谱特性

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-31 DOI: 10.1134/s0036023624600291

G. O. Novitskii, A. A. Medvedeva, A. V. Koshkin, A. I. Vedernikov, N. A. Lobova

引用次数: 0

Directed Hydrothermal Synthesis of Aluminosilicates of Various Structural Types and Prospects for Their Use in Medicine 各种结构类型铝硅酸盐的定向水热合成及其在医学中的应用前景

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-17 DOI: 10.1134/s0036023623603380

O. Yu. Golubeva, Yu. A. Alikina, E. Yu. Brazovskaya, N. Yu. Ul’yanova

{"title":"Directed Hydrothermal Synthesis of Aluminosilicates of Various Structural Types and Prospects for Their Use in Medicine","authors":"O. Yu. Golubeva, Yu. A. Alikina, E. Yu. Brazovskaya, N. Yu. Ul’yanova","doi":"10.1134/s0036023623603380","DOIUrl":"https://doi.org/10.1134/s0036023623603380","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The results of analysis and experimental studies of the possibilities of using synthetic aluminosilicates (montmorillonites, kaolinites, and zeolites) in medicine are presented. In particular, the following application fields are discussed: the field of enterosorption and hemosorption, the development of targeted drug delivery systems with prolonged and pH-controlled release of the active substance in various environments, as well as components of wound dressings. Montmorillonites, aluminosilicates of the kaolinite subgroup with different particle morphologies and zeolites of structural types Beta, Rho, and Y have been obtained under hydrothermal conditions and characterized by physicochemical methods. The results of studying the adsorption and desorption of model drugs (thiamine hydrochloride, and 5-fluorouracil) from porous aluminosilicate matrices of various chemical compositions in various media simulating body environments, adsorption of markers of endogenous intoxication (methylene blue), the ability of aluminosilicates to biodegrade in body environments, and studies of biological activity, in particular cytotoxicity and hemolytic activity of synthetic aluminosilicates, are presented. The results obtained show significant prospects for the use of synthetic aluminosilicates to obtain non-toxic, highly effective sorbents for medical use and drug carriers.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"20 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

High-Temperature Mass Spectrometric Study of the Vaporization of Oxycarbide MAX Phase Ceramics 氧碳化物 MAX 相陶瓷蒸发的高温质谱研究

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-17 DOI: 10.1134/s0036023623603045

V. A. Vorozhtcov, V. L. Stolyarova, S. I. Lopatin, A. L. Shilov

{"title":"High-Temperature Mass Spectrometric Study of the Vaporization of Oxycarbide MAX Phase Ceramics","authors":"V. A. Vorozhtcov, V. L. Stolyarova, S. I. Lopatin, A. L. Shilov","doi":"10.1134/s0036023623603045","DOIUrl":"https://doi.org/10.1134/s0036023623603045","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The vaporization of the carbide materials with the chemical compositions Ti2SiC, Ti3SiC2, Ti2AlC, Ti3AlC2, Zr2AlC, and Zr3AlC2 containing MAX phases and of oxycarbide systems based on these materials with hafnia additives was examined by Knudsen effusion mass spectrometry at temperatures up to 2200 K. Atomic aluminum was identified as the major vapor species over the Ti2AlC, Ti3AlC2, Zr2AlC, and Zr3AlC2 samples at 1500 K. The silicon-containing samples were less volatile than the aluminum-containing carbide materials; they vaporized observably at temperatures above 1900 K to form Si, Si2, SiC2, and Si2C vapor species. The addition of hafnia to the carbides under study led to the formation of oxygen-containing vapor species, particularly Al2O and SiO, and to a decrease in total vapor pressure over the systems formed. The least volatile materials were samples of the Ti2SiC–HfO2 oxycarbide system, and among the aluminum-containing oxycarbide systems, samples of the Zr2AlC–HfO2 system containing up to 10 mol % hafnia and samples of the Ti2AlC–HfO2 system with a higher HfO2 content.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"24 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141742300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Aleskovskii’s Leading Scientific School “Chemistry of Highly Organized Substances:” from Fundamental Research to Widespread Practical Implementation 阿列克斯科夫斯基的主要科学流派 "高有机物化学："从基础研究到广泛的实际应用

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-17 DOI: 10.1134/s0036023623603379

A. A. Malygin, A. A. Malkov, E. A. Sosnov

引用次数: 0

Elastic Energy Relaxation in the Chemical Reaction of CO with Single-Crystalline Silicon during Coordinated Substitution of Atoms 原子配位置换过程中 CO 与单晶硅化学反应的弹性能量松弛

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-17 DOI: 10.1134/s0036023623603227

S. A. Kukushkin, A. V. Osipov

引用次数: 0

Synthesis and Physicochemical Characterization of Solid Oxide Electrolyte and Electrode Materials for Medium-Temperature Fuel Cells 中温燃料电池用固体氧化物电解质和电极材料的合成与物理化学特性分析

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-17 DOI: 10.1134/s0036023623603173

M. V. Kalinina, I. G. Polyakova, S. V. Myakin, T. V. Khamova, L. N. Efimova, I. Yu. Kruchinina

{"title":"Synthesis and Physicochemical Characterization of Solid Oxide Electrolyte and Electrode Materials for Medium-Temperature Fuel Cells","authors":"M. V. Kalinina, I. G. Polyakova, S. V. Myakin, T. V. Khamova, L. N. Efimova, I. Yu. Kruchinina","doi":"10.1134/s0036023623603173","DOIUrl":"https://doi.org/10.1134/s0036023623603173","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Xerogels and finely dispersed СeO2–Nd2O3 and Gd2O3–La2O3–SrO–Ni(Co)2O3–δ mesoporous powders are synthesized by cocrystallization of the corresponding nitrate solutions with ultrasonic treatment, and used to prepare nanoceramic materials with a fluorite-like and orthorhombic perovskite crystal structures, respectively, with CSRs of ca. 55–90 nm (1300°C). The physicochemical characterization of the prepared ceramic materials revealed an open porosity of 7–11% for СeO2–Nd2O3 ceramics and 17–42% for Gd2O3–La2O3–SrO–Ni(Co)2O3–δ ceramics. Cerium oxide-based materials possess a predominantly ionic electrical conductivity with σ700°С = 0.31 × 10–2 S/cm (the ion transference number ti = 0.71–0.89 in the temperature range 300–700°C) due to the formation of mobile oxygen vacancies upon heterovalent substitution of Nd3+ for Се4+. Solid solutions based on gadolinium nickelate and gadolinium cobaltite feature a mixed electronic–ionic conductivity (σ700°С = 0.59 × 10–1 S/cm) with the electron and ion transference numbers te = 0.92–0.99 and ti = 0.08–0.01. The prepared ceramic materials are shown to be promising as solid oxide electrolytes and electrodes for medium-temperature fuel cells.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"32 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Modeling of Phase Equilibria in the La2O3–SrO–ZrO2 System Using the NUCLEA Database 利用 NUCLEA 数据库建立 La2O3-SrO-ZrO2 系统中的相平衡模型

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-17 DOI: 10.1134/s0036023623602957

V. A. Vorozhtcov, V. I. Almjashev, V. L. Stolyarova

{"title":"Modeling of Phase Equilibria in the La2O3–SrO–ZrO2 System Using the NUCLEA Database","authors":"V. A. Vorozhtcov, V. I. Almjashev, V. L. Stolyarova","doi":"10.1134/s0036023623602957","DOIUrl":"https://doi.org/10.1134/s0036023623602957","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The goal of this work was to study phase equilibria in the La2O3–SrO–ZrO2 system, which is a promising base for high-temperature ceramics and materials with unique optical, electrochemical, and catalytic properties. Thermodynamic modeling of phase equilibria in this system was carried out using the NUCLEA database and GEMINI2 (Gibbs Energy Minimizer) software. One polythermal and thirteen isothermal sections of the La2O3–SrO–ZrO2 phase diagram were calculated in the temperature range 600–3023 K. The obtained data on La2O3–SrO–ZrO2 phase equilibria were discussed with reference to information available on the corresponding binary systems. The modeled phase relations in the ternary system under study correlate completely with the phases existing in the corresponding binary systems. The temperature evolution of the phase relations and boundaries of single-phase, two-phase, and three-phase areas in the system were considered. Four ternary eutectic points were identified at 2039, 2105, 2120, and 2351 K.","PeriodicalId":762,"journal":{"name":"Russian Journal of Inorganic Chemistry","volume":"27 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141720030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Few-Layer Graphene Produced by the Self-Propagating High-Temperature Process from Biopolymers: Synthesis, Properties, and Application (a Review) 利用生物聚合物自蔓延高温工艺制备的少层石墨烯：合成、特性和应用（综述）

IF 2.1 3区化学

Russian Journal of Inorganic Chemistry Pub Date : 2024-07-17 DOI: 10.1134/s0036023623603185

A. P. Voznyakovskii, A. A. Vozniakovskii, S. V. Kidalov

引用次数: 0