International Journal of Self-Propagating High-Temperature Synthesis最新文献_第4页

Features of Front Propagation during Combustion of a Thermite-Type Mixture FeO/TiO2/B2O3/Cr2O3/CaCrO4/Al/C under Gravity Forces 在重力作用下 FeO/TiO2/B2O3/Cr2O3/CaCrO4/Al/C 热亚铁型混合物燃烧过程中的前沿传播特征

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700043

S. L. Silyakov, N. Yu. Khomenko, A. E. Sytschev

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Study of the Adsorption Properties of Mesoporous Silica Modified with Silver and Doped with Cerium or Terbium Using Inverse Gas Chromatography 利用反相气相色谱法研究银修饰和掺杂铈或铽的介孔二氧化硅的吸附特性

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700079

A. A. Tokranov, E. O. Tokranova, D. V. Ovchinnikova, R. V. Shafigulin, A. V. Bulanova, M. V. Kuznetsov, A. V. Safonov, O. V. Belousova

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High-Temperature Synthesis of Cast Ceramic Material Al2O3–Cr2O3 + ZrO2 高温合成铸造陶瓷材料 Al2O3-Cr2O3 + ZrO2

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700055

P. A. Miloserdov, V. A. Gorshkov

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Solution Combustion Synthesis and Kinetic Measurements in Ni(NO3)2–C6H8O7 System. Preparation of Nickel Powder Ni(NO3)2-C6H8O7 体系中的溶液燃烧合成和动力学测量。制备镍粉

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-07-01 DOI: 10.3103/S1061386224700031

N. Amirkhanyan

{"title":"Solution Combustion Synthesis and Kinetic Measurements in Ni(NO3)2–C6H8O7 System. Preparation of Nickel Powder","authors":"N. Amirkhanyan","doi":"10.3103/S1061386224700031","DOIUrl":"10.3103/S1061386224700031","url":null,"abstract":"Solution combustion synthesis (SCS) is a widely used method to prepare nanomaterials tailored for specific applications, with a primary focus on understanding the influence of precursors on material properties and microstructure evolution. There is also a lack of systematic studies to understand the kinetics of SCS reactions. This work reports on the preparation of pure nickel by the combustion of Ni(NO3)2 + citric acid (C6H8O7) solution and the investigation of SCS reaction mechanism by thermal analysis technique. The lower and upper combustion limits were determined depending on the citric acid to Ni(NO3)2 ratio. The optimal composition of the initial mixture was revealed to prepare nickel powder without using an additional post–synthesis reduction of metal oxides. Ozawa’s method was employed to calculate the effective activation energy (∼101 ± 5 kJ mol–1) of the nickel formation reaction based on the TGA data. The magnetization of the nickel powder agglomerates with ∼80–200-nm nanoscale particles was measured to be 55.1 Am2 kg–1.","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 2","pages":"100 - 108"},"PeriodicalIF":0.5,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141531321","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}

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Rapidly Synthesizing Cu2Sb Phase of Tetragonal Structure by Electrothermal Explosion 通过电热爆炸快速合成四方结构的 Cu2Sb 相

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-03-14 DOI: 10.3103/S1061386224010035

A. Hafs, T. Hafs, D. Berdjane, L. Yandjah

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Impact of Magnesium on Structural and Morphological Study of Co–Zn Ferrites 镁对共锌铁氧体结构和形态研究的影响

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-03-14 DOI: 10.3103/S1061386224010047

R. Y. Kolekar, S. B. Kapatkar, Sushant S. Kakati, S. N. Mathad

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Synthesis, Characterization, and Optical Properties of Y3Al5O12:Ce,Nd Phosphor by Mixed Fuel Combustion Synthesis 混合燃料燃烧合成 Y3Al5O12:Ce,Nd 磷化物的合成、表征和光学特性

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-03-14 DOI: 10.3103/S1061386224010102

M. Upasani

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Combustion Synthesis of Cermets from Granular Mixtures Ti–C–NiCr for Protective Coatings 从用于保护涂层的 Ti-C-NiCr 粒状混合物燃烧合成金属陶瓷

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-03-14 DOI: 10.3103/S1061386224010072

B. S. Seplyarskii, R. A. Kochetkov, T. G. Lisina, N. I. Abzalov

{"title":"Combustion Synthesis of Cermets from Granular Mixtures Ti–C–NiCr for Protective Coatings","authors":"B. S. Seplyarskii, R. A. Kochetkov, T. G. Lisina, N. I. Abzalov","doi":"10.3103/S1061386224010072","DOIUrl":"10.3103/S1061386224010072","url":null,"abstract":"The combustion modes of granular mixtures (100 – X)(Ti + C) + XNiCr, X = 0–30%, were studied. The experimental setup provided filtration of impurity gases released during combustion, either in the direction of propagation of the combustion front, or through the side surface of the sample. The comparison of burning velocities in different gas filtration schemes indicates the influence of convective heat transfer on the combustion patterns of mixtures with X < 30%. A method was proposed for determining the composition of the mixture in which the transition to the convective combustion mode occurs. The content of impurity gases in mixtures of different compositions was estimated quantitively. The comparison of experimental data with calculations based on the theory of filtration combustion showed that there is a conductive combustion mode for all mixtures of 0.6-mm granules and a mixture of 1.7-mm granules with X = 30%. XRD analysis of the synthesis products revealed no intermetallic phases, regardless of the size of the granules.","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 1","pages":"80 - 86"},"PeriodicalIF":0.5,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140149666","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}

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Influence of Starting Reagents on the Formation of Ti3SiC2 Porous Skeleton by SHS in Air 起始试剂对在空气中通过 SHS 形成 Ti3SiC2 多孔骨架的影响

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-03-14 DOI: 10.3103/S1061386224010023

D. M. Davydov, E. R. Umerov, A. P. Amosov, E. I. Latukhin

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ORR Catalysts Based on Carbon Nanotubes and Metal Phthalocyanines Obtained by High-Temperature Synthesis 通过高温合成获得的基于碳纳米管和金属酞菁的 ORR 催化剂

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International Journal of Self-Propagating High-Temperature Synthesis Pub Date : 2024-03-14 DOI: 10.3103/S1061386224010084

R. V. Shafigulin, K. Yu. Vinogradov, A. V. Bulanova, M. V. Kuznetsov, Yu. G. Morozov, A. V. Safonov, V. V. Podlipnov

{"title":"ORR Catalysts Based on Carbon Nanotubes and Metal Phthalocyanines Obtained by High-Temperature Synthesis","authors":"R. V. Shafigulin, K. Yu. Vinogradov, A. V. Bulanova, M. V. Kuznetsov, Yu. G. Morozov, A. V. Safonov, V. V. Podlipnov","doi":"10.3103/S1061386224010084","DOIUrl":"10.3103/S1061386224010084","url":null,"abstract":"Bi- and trimetallic catalysts based on multi-walled carbon nanotubes (MWCNT) and metal (Me) phthalocyanines (Pc) (MePc) (MWCNT–CoPc–NiPc, MWCNT–CuPc–NiPc, MWCNT–CoPc–CuPc, and MWCNT–CoPc–CuPc–Pd) for electrochemical oxygen reduction reaction (ORR) were synthesized by high-temperature synthesis at 1000°C in an inert atmosphere. The obtained materials were characterized by scanning electron microscopy (SEM), low-temperature nitrogen absorption–desorption, and Raman spectroscopy. The change in textural characteristics and morphology of electrocatalysts during high-temperature synthesis was studied. It was shown that the nature of the metal significantly changes the physicochemical characteristics of electrocatalysts based on carbon nanotubes. The electrochemical experiment was carried out in the linear voltammetry algorithm using a three-electrode chamber with a rotating disk electrode. The main characteristics of the process of electroreduction of oxygen from an alkaline electrolyte—limiting diffusion current, potential half-waves, and initial reaction potential—were determined. MWCNT–CoPc–CuPc–Pd catalyst was found to exhibit the highest activity in the reaction of electrochemical oxygen reduction in an alkaline liquid, reaching high efficiency and corrosiveness as with platinum catalysts, with a decrease in activity after 1000 cycles of less than 7%.","PeriodicalId":595,"journal":{"name":"International Journal of Self-Propagating High-Temperature Synthesis","volume":"33 1","pages":"39 - 48"},"PeriodicalIF":0.5,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140149480","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