Russian Journal of Applied Chemistry最新文献_第3页

Influence of the Configuration of Feedstock Injection Nozzles on the Hydrodynamic Regime and Performance of the Catalytic Cracking Riser-Reactor for Production of Light Olefins Using CFD Modeling 基于CFD模型的进料喷嘴构型对轻烯烃催化裂化立管反应器水动力特性和性能的影响

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-06-24 DOI: 10.1134/S1070427225020053

Saba Foroutan Ghazvini, E. N. Ivashkina, V. A. Chuzlov

{"title":"Influence of the Configuration of Feedstock Injection Nozzles on the Hydrodynamic Regime and Performance of the Catalytic Cracking Riser-Reactor for Production of Light Olefins Using CFD Modeling","authors":"Saba Foroutan Ghazvini, E. N. Ivashkina, V. A. Chuzlov","doi":"10.1134/S1070427225020053","DOIUrl":"10.1134/S1070427225020053","url":null,"abstract":"The necessity of global market shift for production of light olefins influenced the catalytic cracking process in the direction of process optimization and construction modernization. This work investigated the influence of configuration (distribution) of feedstock injection nozzles on the hydrodynamic regime and performance of the riser-reactor for production of light gases (C1–C4). We considered eight feedstock injection nozzles in two cases. In case (a), eight nozzles are distributed in one plane around the riser-reactor, while in case (b), eight nozzles are distributed in two planes (four nozzles on each plane). Computational fluid dynamic modeling with four-lump reaction scheme with consideration of coke formation was used. Applied kinetic parameters were determined for an industrial riser-reactor with microspherical zeolite-containing catalyst. It was achieved that the distribution of solid-gas phases was enhanced for geometry (b). Mass fraction of light gases was obtained up to 0.5 (50 wt %). Moreover, the formation of coke was up to 14–15 and 9–10 wt % for geometry (a) and (b), respectively. It was observed that the main zone of chemical reactions is up to 10–15 m above the feedstock injection zone. Therefore, shortening the riser-reactor is recommended.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 2","pages":"91 - 107"},"PeriodicalIF":0.6,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169196","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

Synthesis and Electrochemical Properties of Aluminum-Doped Vanadium Oxide as a Cathode Material for Rechargeable Magnesium Batteries 可充电镁电池正极材料掺铝氧化钒的合成及其电化学性能

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-06-24 DOI: 10.1134/S107042722502003X

E. G. Tolstopyatova, M. A. Kamenskii, Y. D. Salnikova, V. V. Kondratiev

{"title":"Synthesis and Electrochemical Properties of Aluminum-Doped Vanadium Oxide as a Cathode Material for Rechargeable Magnesium Batteries","authors":"E. G. Tolstopyatova, M. A. Kamenskii, Y. D. Salnikova, V. V. Kondratiev","doi":"10.1134/S107042722502003X","DOIUrl":"10.1134/S107042722502003X","url":null,"abstract":"Rechargeable magnesium batteries (RMBs) have attracted attention as next-generation energy storage systems due to their high safety, large volumetric capacity, low redox potential of magnesium anode, and cost effectiveness. However, the development of highly reversible cathode materials for RMBs with fast intercalation kinetics is very challenging due to the slow diffusion of Mg2+ ions and the low reversible capacity, characteristic of divalent magnesium ions in the cathode material. This is a consequence of the strong electrostatic interaction between the Mg2+ ions and the cathode material, which makes the reversible intercalation difficult. In this work, a cathode material based on aluminum-doped vanadium oxide with an expanded interlayer space was synthesized. The structure of the material was studied by high-resolution X-ray diffraction. Its electrochemical properties in propylene carbonate magnesium-containing electrolytes have been studied by cyclic voltammetry. The initial values of the specific capacity of the AlxV2O5 cathode of about 136 mAh g–1 at a scan rate of 0.4 mV s–1 were obtained from the CVs by integrating the current under the cathodic curve. The analysis of chemical composition of the AlxV2O5 cathode after the discharge cycle showed a significant amount of intercalated magnesium ions.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 2","pages":"72 - 78"},"PeriodicalIF":0.6,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169198","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

Recycling of Iron Scrap Wastes into Cement Industry 废铁在水泥工业中的回收利用

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-06-24 DOI: 10.1134/S1070427224602158

N. M. Khalil, Yousif Algamal

{"title":"Recycling of Iron Scrap Wastes into Cement Industry","authors":"N. M. Khalil, Yousif Algamal","doi":"10.1134/S1070427224602158","DOIUrl":"10.1134/S1070427224602158","url":null,"abstract":"This work aims at the exploitation of huge quantities of iron scrap wasted during iron production via recycling iron wastes using an electric arc furnace as a partial replacement to ordinary Portland cement to increase the production capacity of Portland cement without further firing and hence decreasing the ecological problems associated with its production. Six mixes were prepared with different additives of iron scrap wastes up to 50 wt. % on the expense of the cement content. Physico-mechanical properties namely water of consistency, setting time, hydration behavior, sintering parameters (bulk density and apparent porosity) as well as mechanical properties (cold crushing strength) were tested according to the International Standard Specifications. X-ray diffraction technique was used to investigate the phase compositions of the hydrated cement samples. The results indicated a marked improvement in the physicomechanical properties of the prepared cement mixes as the content of iron scrap waste additives increased. The mix composed of 70 wt. % Portland cement with 30 % iron scrap waste additive was considered as the optimum mix due to its outstanding physical and cementing properties (setting time; initial:48 min., final: 160 min., combined water; 43.25 %, bulk density; 3.22 g/cm3, apparent porosity; 10.46 %, cold crushing strength; 530 kg/cm2) which satisfy the requirement of International standard of mixed cement.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 2","pages":"53 - 61"},"PeriodicalIF":0.6,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168417","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

Study on the Detection of Copper Ions in Water by Phycoerythrin-Nitrocellulose Test Paper 植红蛋白-硝化纤维素试纸检测水中铜离子的研究

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-05-13 DOI: 10.1134/S107042722501001X

Jionghua Xiang, Qinying Lai, Qiming Wu, Yucang Zhang, Haiqi Wang

引用次数: 0

Investigation of Adsorption Properties of Agro-Waste-Derived Activated Carbons Prepared via Various Physicochemical Activation Methods for Gasoline, Iodine, and Methylene Blue 不同理化活化法制备的农用废弃物活性炭对汽油、碘和亚甲基蓝的吸附性能研究

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-05-13 DOI: 10.1134/S1070427224605710

K. Subba Rao, L. Vijayalakshmi, M. V. Ramachandra Rao, R. Vijay, T. Kamakshi, M. Nagarjuna, M. Srinivasa Rao, Jiseok Lim, Mohammad Altaf

{"title":"Investigation of Adsorption Properties of Agro-Waste-Derived Activated Carbons Prepared via Various Physicochemical Activation Methods for Gasoline, Iodine, and Methylene Blue","authors":"K. Subba Rao, L. Vijayalakshmi, M. V. Ramachandra Rao, R. Vijay, T. Kamakshi, M. Nagarjuna, M. Srinivasa Rao, Jiseok Lim, Mohammad Altaf","doi":"10.1134/S1070427224605710","DOIUrl":"10.1134/S1070427224605710","url":null,"abstract":"Activated carbons (AC) have been effectively produced from rice husk using the following activation methods: i) physical activation; ii) chemical activation. We prepared ACs using CO2 gas as an activator under various activation temperatures for a time period of 1 hour. This study investigated the fabrication of activated carbon (AC) from rice husk using a chemical activation method that used H3PO4, KOH, and ZnCl2. This study looked at how to make activated carbon (AC) from rice husk utilizing a chemical activation technique that included H3PO4, KOH, and ZnCl2.The influence of several parameters, for instance carbonization temperature, carbonization duration and concentrations, on ACs BET surface area was investigated. Rice husk activated carbons (RHAC) were described by thermo-gravimetric investigation (TGA), Scanning Electron microscopy (SEM), Brunauer Emmett Teller (BET) surface and N2 adsorption. Both techniques of activating activated carbon have high adsorption characteristics. During this, adsorption parameters for utilizing the GC-MS method to analyze gasoline. The agricultural wastes employed in the study have been demonstrated to be possible precursors for the cost-effective on-site generation of activated carbon, thereby easing the problem of agricultural waste management.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 1","pages":"20 - 31"},"PeriodicalIF":0.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938622","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

Electrochemical Transformations of Lithium Polysulfides on Carbon Electrodes Fabricated by Low-Temperature Pyrolysis of Ethanol Vapors on Aluminum Foil 铝箔上乙醇蒸气低温热解制备的碳电极上多硫化物锂的电化学转化

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-05-13 DOI: 10.1134/S1070427225010057

A. G. Barkov, V. Yu. Mishinkin, E. V. Kuzmina, E. V. Karaseva, V. S. Kolosnitsyn

{"title":"Electrochemical Transformations of Lithium Polysulfides on Carbon Electrodes Fabricated by Low-Temperature Pyrolysis of Ethanol Vapors on Aluminum Foil","authors":"A. G. Barkov, V. Yu. Mishinkin, E. V. Kuzmina, E. V. Karaseva, V. S. Kolosnitsyn","doi":"10.1134/S1070427225010057","DOIUrl":"10.1134/S1070427225010057","url":null,"abstract":"The main regularities of electrochemical transformations of lithium octasulfide in a 1 M LiN(CF3SO2)2 solution in sulfolane on the surface of carbon nanomaterials synthesized by low-temperature pyrolysis of ethanol vapors in an argon atmosphere on aluminum foil in the presence of a nickel catalyst were studied. It was found that the depth of electrochemical transformations of sulfur and long-chain lithium polysulfides on the surface of the synthesized carbon nanomaterials is close to 100%. The carbon materials were characterized by Raman spectroscopy, scanning electron microscopy (SEM), and energy-dispersive X-ray spectroscopy (EDS). The Raman spectra of the synthesized carbon materials show characteristic D and G bands with maxima at 1323 and 1589 cm–1, respectively. The D/G intensity ratio is 0.7, indicating a significant proportion of sp3-hybridized carbon atoms. SEM micrographs reveal carbon fibrous structures with diameters of 25–35 nm. The synthesized carbon nanomaterials contain (%): carbon 96, oxygen 2.8, iron 0.3, and nickel 0.9.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 1","pages":"43 - 50"},"PeriodicalIF":0.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938270","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

Enhanced CO2 Hydrogenation to Methanol via Plasma-Treated Ni/Ga2O3 Catalysts 等离子体处理Ni/Ga2O3催化剂强化CO2加氢制甲醇

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-05-13 DOI: 10.1134/S107042722560018X

Ziyan Liu, Likang Wang, Zepu Jin, Zhao Wang

{"title":"Enhanced CO2 Hydrogenation to Methanol via Plasma-Treated Ni/Ga2O3 Catalysts","authors":"Ziyan Liu, Likang Wang, Zepu Jin, Zhao Wang","doi":"10.1134/S107042722560018X","DOIUrl":"10.1134/S107042722560018X","url":null,"abstract":"In this work, Ni/Ga2O3 catalysts were prepared via the cold plasma method. The Ni/Ga2O3 composite treated with plasma exhibited superior performance, achieving a CO2 conversion of 13.8% and a methanol selectivity of 56% at 300°C and 5 MPa. These values were notably greater than those obtained with catalysts prepared through calcination or chemical reduction. Compared with the calcination method, cold plasma treatment results in smaller particle sizes (4.12 nm) because of the low temperature of the plasma, which increases the number of active sites. Additionally, high-energy electron bombardment within the plasma field strengthens the interaction between Ni and the Ga2O3 support. This enhanced metal‒support interaction, which is stronger than that achieved via calcination or chemical reduction, plays a critical role in improving the catalytic activity for the CO2 hydrogenation reaction. The intricate mechanism of CO2 hydrogenation on the Ni/Ga2O3-plasma-H2 catalyst was elucidated via a combination of advanced characterization techniques and in situ DRIFTS analysis. Hydrogen dissociates on Ni nanoparticles and subsequently spills over onto the Ga2O3 support, whereas oxygen vacancies promote CO2 adsorption, resulting in the formation of bidentate carbonate species as key intermediates. These intermediates are then hydrogenated to produce methanol.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 1","pages":"32 - 42"},"PeriodicalIF":0.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938271","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

Synthesis and Thermal Transformations of Iron(III) Methacrylate—a Precursor of Iron-Containing Nanocomposites 含铁纳米复合材料前驱体——甲基丙烯酸铁的合成与热转化

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-05-13 DOI: 10.1134/S1070427224603541

A. V. Dymova, S. A. Semenov, A. S. Pronin, G. I. Dzhardimalieva, R. R. Saifutyarov, A. I. Ivanova, E. V. Fesik, K.V. Pokholok, A. O. Naumova, A. Yu. Gervald, R. V. Toms, V. I. Popenko

{"title":"Synthesis and Thermal Transformations of Iron(III) Methacrylate—a Precursor of Iron-Containing Nanocomposites","authors":"A. V. Dymova, S. A. Semenov, A. S. Pronin, G. I. Dzhardimalieva, R. R. Saifutyarov, A. I. Ivanova, E. V. Fesik, K.V. Pokholok, A. O. Naumova, A. Yu. Gervald, R. V. Toms, V. I. Popenko","doi":"10.1134/S1070427224603541","DOIUrl":"10.1134/S1070427224603541","url":null,"abstract":"Iron(III) methacrylate was synthesized and characterized by elemental analysis and IR spectroscopy. The mechanism of thermal decomposition of iron(III) methacrylate was studied using differential scanning calorimetry combined with a mass spectrometer in a nitrogen environment. Experimental and statistical mathematical models of the thermolysis of iron(III) methacrylate were obtained, relating a number of response functions (carbon and hydrogen concentrations in the nanocomposite, content of hematite phases, α-Fe, average diameter of nanoparticles (according to X-ray diffraction data), saturation magnetization, residual magnetization, coercivity) with temperature and time of the thermolysis process. Response surfaces were constructed to illustrate the dependence of the listed response functions on temperature and time of thermolysis. As a result of the analysis of the obtained response surfaces, the conditions for the synthesis of a nanocomposite with specified characteristics, in particular with a higher content of the ferromagnetic α-Fe phase, were determined.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"97 12","pages":"870 - 881"},"PeriodicalIF":0.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938319","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: New Schiff Base Clubbed Benzothiazole Derivatives: Design, Synthesis, Biological Evaluation, Molecular Docking and Pharmacokinetic Studies as Antibacterial and Antifungal Agents 新的希夫碱棒状苯并噻唑衍生物：设计、合成、生物学评价、分子对接和作为抗菌和抗真菌药物的药代动力学研究

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-05-13 DOI: 10.1134/S1070427225010045

Rahul Tailor, Jigisha Modi, Savan Patel, Rucha Wani, Merwyn Dcosta, Arvind Singh

引用次数: 0

Synthesis of Copper–Carbon Nanocomposites and Their Application as Electrocatalysts 纳米铜碳复合材料的合成及其电催化剂应用

IF 0.6 4区化学

Russian Journal of Applied Chemistry Pub Date : 2025-05-13 DOI: 10.1134/S1070427225010033

N. M. Ivanova, Ye. A. Soboleva, Ya. A. Vissurkhanova

{"title":"Synthesis of Copper–Carbon Nanocomposites and Their Application as Electrocatalysts","authors":"N. M. Ivanova, Ye. A. Soboleva, Ya. A. Vissurkhanova","doi":"10.1134/S1070427225010033","DOIUrl":"10.1134/S1070427225010033","url":null,"abstract":"The preparation of copper-carbon composites using functionalized multi-walled carbon nanotubes (MWCNTs), fullerene black (FB) and N-containing soot prepared by carbonization of aniline-formaldehyde polymer (AFS) is described. The composite structure was studied by X-ray diffraction analysis, Electron spectroscopy and Energy-dispersive spectroscopy microanalysis. The influence of the nature of the carbon materials on the formation of copper micro- and nanoparticles prepared by a chemical reduction in their presence has been established. The resulting copper-carbon composites were used as electrocatalysts in the electrohydrogenation of nitrobenzene. The MWCNTs and AFS composites with a ratio to copper of 1 : 1, as well as composites with a mixed carbon base, showed electrocatalytic activity with an increase in the rate of hydrogenation of nitrobenzene compared to its electrochemical reduction on a non-activated copper cathode. It is assumed that due to the strong interaction of copper particles with the FB, its electrocatalytic activity was depressed. The nitrobenzene hydrogenation on all composites is accompanied by the formation of the main product aniline, as would be expected when the process is carried out in an alkaline environment and high voltages in the system. According to chromatographic analyses, the aniline yields were 98-99%.","PeriodicalId":757,"journal":{"name":"Russian Journal of Applied Chemistry","volume":"98 1","pages":"10 - 19"},"PeriodicalIF":0.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938621","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