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Production and Analysis of Mesophase Pitch: A Review 中间相沥青的产生与分析综述
IF 0.5
Coke and Chemistry Pub Date : 2025-07-21 DOI: 10.3103/S1068364X25600496
R. Yu. Kovalev, A. P. Nikitin
{"title":"Production and Analysis of Mesophase Pitch: A Review","authors":"R. Yu. Kovalev,&nbsp;A. P. Nikitin","doi":"10.3103/S1068364X25600496","DOIUrl":"10.3103/S1068364X25600496","url":null,"abstract":"<div><p>Applications of mesophase or anisotropic pitch include the production of anisotropic carbon fibers, needle coke, and construction materials. Research on the production of mesophase pitch is reviewed in the present work. Its production by heat treatment of coal tar pitch, synthetic pitch, and petroleum pitch is outlined. Physicochemical methods of identifying and investigating the mesophase structure of pitch are considered.</p></div>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 4","pages":"348 - 355"},"PeriodicalIF":0.5,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166966","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
Structural Characterization of Biotar and Biochar Products Obtained by Carbonization of Rhododendron ponticum L. 杜鹃花炭化制备生物焦油和生物炭的结构表征
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600290
Hale Sütcü
{"title":"Structural Characterization of Biotar and Biochar Products Obtained by Carbonization of Rhododendron ponticum L.","authors":"Hale Sütcü","doi":"10.3103/S1068364X25600290","DOIUrl":"10.3103/S1068364X25600290","url":null,"abstract":"<p><i>Rhododendron ponticum</i> L. is a woody biomass commonly found in the Western Black Sea region of Turkey. This study aims to investigate the feasibility of <i>Rhododendron ponticum</i> L. in the energy field. For this purpose, <i>Rhododendron ponticum</i> L. was carbonized in a semi pilot Jenkner carbonization system at a heating rate of 3°C/min at temperatures of 350 and 550°C for 1 h. Structural characterization of the obtained liquid (biotar) and solid (biochar) products was investigated. The chemical characterization of biotar was carried out with elemental and proximate analyses, FTIR and <sup>1</sup>H NMR spectroscopies. The structural characterization of biochar was also investigated by elemental analysis, proximate analysis, FTIR spectroscopy and SEM images.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"321 - 326"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161909","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
Influence of Thermal Reactions with α-Methylstyrene and Nitrobenzene on the Composition and Characteristics of the Anthracene Oil in Coal Tar α-甲基苯乙烯和硝基苯热反应对煤焦油中蒽油组成及特性的影响
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X2560037X
A. P. Krasikova, E. I. Andreikov, D. O. Antonov, M. G. Pervova, E. F. Zhilina, K. A. Chistyakov
{"title":"Influence of Thermal Reactions with α-Methylstyrene and Nitrobenzene on the Composition and Characteristics of the Anthracene Oil in Coal Tar","authors":"A. P. Krasikova,&nbsp;E. I. Andreikov,&nbsp;D. O. Antonov,&nbsp;M. G. Pervova,&nbsp;E. F. Zhilina,&nbsp;K. A. Chistyakov","doi":"10.3103/S1068364X2560037X","DOIUrl":"10.3103/S1068364X2560037X","url":null,"abstract":"<p>The change in composition and characteristics of anthracene oil from coal tar on reacting with hydrogen acceptors (α-methylstyrene and nitrobenzene) at 360°C is studied. Besides the formation of cumene and aniline by the transfer of hydrogen from the anthracene oil, α-methylstyrene and nitrobenzene react with components in the anthracene oil to form products that cannot be determined by chromatography. In addition, polymerization of the components in the anthracene oil is observed. The anthracene oil is analyzed after reaction with α-methylstyrene and nitrobenzene by means of gas–liquid chromatography, elemental analysis, thermogravimetric analysis, gel permeation chromatography, NMR <sup>1</sup>H spectroscopy, IR spectroscopy, and UV fluorescent spectroscopy.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"212 - 220"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161913","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
Determining the Optimal Coking Temperature on the Basis of Raman Spectroscopy 基于拉曼光谱的最佳焦化温度的确定
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600368
M. V. Shishanov, M. S. Luchkin, A. A. Morozov, O. N. Volkova, M. I. Gilmkhanova
{"title":"Determining the Optimal Coking Temperature on the Basis of Raman Spectroscopy","authors":"M. V. Shishanov,&nbsp;M. S. Luchkin,&nbsp;A. A. Morozov,&nbsp;O. N. Volkova,&nbsp;M. I. Gilmkhanova","doi":"10.3103/S1068364X25600368","DOIUrl":"10.3103/S1068364X25600368","url":null,"abstract":"<p>Currently, Raman spectroscopy is the primary method of investigating carbon materials. In the present work, coke samples produced from the same batch but with different final temperatures are studied. On the basis of correlations between the spectral characteristics and the hot properties of the coke, the coking temperature corresponding to the best coke quality is determined. The potential of Raman spectroscopy for express tests of coke is demonstrated.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"206 - 211"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161518","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
Plastic Parameters of Coal Batch 煤粉的塑性参数
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600356
A. N. Smirnov, S. S. Zinchenko, S. A. Krylova
{"title":"Plastic Parameters of Coal Batch","authors":"A. N. Smirnov,&nbsp;S. S. Zinchenko,&nbsp;S. A. Krylova","doi":"10.3103/S1068364X25600356","DOIUrl":"10.3103/S1068364X25600356","url":null,"abstract":"<p>An additive model is used to calculate the main plastometric index: the plastic layer thickness <i>Y</i> for coal batch with 3–5 components. Calculated and experimental values of <i>Y</i> are compared. In the practical range of batch compositions, the additive approach permits determination of <i>Y</i> at a 95% confidence level. The results are verified for the batch components in the coke plant at Magnitorsk Iron and Steel Works (MMK).</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"202 - 205"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161912","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
Electrode Nanocomposites of Supercapacitors Based on Functionalized Activated Charcoal Filled with Gold Nanoparticles 基于功能化活性炭填充金纳米粒子的超级电容器电极纳米复合材料
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600381
G. Y. Simenyuk, N. S. Zakharov, A. N. Popova, V. M. Pugachev, V. G. Dodonov, V. I. Krasheninin
{"title":"Electrode Nanocomposites of Supercapacitors Based on Functionalized Activated Charcoal Filled with Gold Nanoparticles","authors":"G. Y. Simenyuk,&nbsp;N. S. Zakharov,&nbsp;A. N. Popova,&nbsp;V. M. Pugachev,&nbsp;V. G. Dodonov,&nbsp;V. I. Krasheninin","doi":"10.3103/S1068364X25600381","DOIUrl":"10.3103/S1068364X25600381","url":null,"abstract":"<p>The use of activated charcoal in electrodes for supercapacitors seems very promising. When activated charcoal is treated with aqueous hydrogen peroxide solution, oxygen-bearing functional groups are formed—primarily carbonyl groups. (This process is known as functionalization.) That results in approximately 40% increase in the electrical capacitance. If filler—2 wt % gold nanoparticles—is introduced in the resulting material, its pore structure is not blocked. By this means, the electrical capacitance may be increased by a further ~10%. The electrical capacitance of this nanostructured electrode material proves very stable (~86%) in repeated cycling of the potential (up to 500 cycles).</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"221 - 227"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161519","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
Optimization of Random Pore Model Parameters of Metallurgical Coke Nonisothermal Gasification via Genetic Algorithm and Least Squares 基于遗传算法和最小二乘法的冶金焦非等温气化随机孔隙模型参数优化
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600307
Hanlu Song,  Zhongsuo Liu
{"title":"Optimization of Random Pore Model Parameters of Metallurgical Coke Nonisothermal Gasification via Genetic Algorithm and Least Squares","authors":"Hanlu Song,&nbsp; Zhongsuo Liu","doi":"10.3103/S1068364X25600307","DOIUrl":"10.3103/S1068364X25600307","url":null,"abstract":"<p>This paper kinetically studied the metallurgical coke nonisothermal gasification by thermogravimetry. The random pore model (RPM) was made use of to describe gasification kinetic behavior. The RPM parameters were optimized using two methods, viz. the method using genetic algorithm alone and the method combining genetic algorithm and least squares. By comparison with the former method, the latter yielded more accurate parameters. Theoretical curves obtained from the method combining genetic algorithm and least squares matched experimental ones well.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"308 - 312"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161516","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
Influence of Pressure and Activator Composition on Crystallization and Performance of Alkali-Activated Fly Ash Geopolymers for Sustainable Construction 压力和活化剂组成对碱活性粉煤灰地聚合物结晶和性能的影响
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600320
Sanaboina Nagaraju, Rajendran Sudha, Raghavan Jino
{"title":"Influence of Pressure and Activator Composition on Crystallization and Performance of Alkali-Activated Fly Ash Geopolymers for Sustainable Construction","authors":"Sanaboina Nagaraju,&nbsp;Rajendran Sudha,&nbsp;Raghavan Jino","doi":"10.3103/S1068364X25600320","DOIUrl":"10.3103/S1068364X25600320","url":null,"abstract":"<p>This research explores the geopolymerization mechanism in alkali-activated fly ash under high-pressure conditions to better understand the development of binder gels. Fly ash was activated using either sodium hydroxide alone or a mixture of sodium silicate solution and sodium hydroxide, followed by curing at 120°C under 0.22 MPa pressure for the initial 24 h. The impact of pressure on the formation and transformation of the binder gel was examined using advanced analytical methods, such as synchrotron X-ray diffraction and solid-state Si and Al MAS NMR spectroscopy. The results reveal that the reactivity of raw fly ash and the formation of zeolite phases were notably increased in samples activated with sodium hydroxide alone. In contrast, the effects of elevated pressure were less significant in samples activated with the sodium silicate solution. These findings are crucial for optimizing geopolymer binder design, as the extent of crystallization plays a key role in determining the long-term performance and durability of geopolymer materials.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"298 - 307"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161515","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
Efficiency of Frozen Coal Discharge from Rail Cars 轨道车辆冷冻煤排放效率研究
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600344
G. L. Kozenkova, R. Yu. Israilov, A. Yu. Kashurkin
{"title":"Efficiency of Frozen Coal Discharge from Rail Cars","authors":"G. L. Kozenkova,&nbsp;R. Yu. Israilov,&nbsp;A. Yu. Kashurkin","doi":"10.3103/S1068364X25600344","DOIUrl":"10.3103/S1068364X25600344","url":null,"abstract":"<p>The freezing of coal in railroad cars hinders coal discharge and interferes with efficient power station operation. In particular, Urtuyskoye coal is characterized by high moisture content and hence is very susceptible to freezing. This problem may be addressed by modernizing the discharge system and preliminary treatment of the rail cars. Various methods of unloading frozen coal are considered, such as heating, mechanical action, and the use of antifreeze. The proposed method includes thawing of the cargo by means of infrared heaters to prevent obstructions in the bunkers of the boiler shop and treatment of the car’s interior surfaces with Niogrin oil-based dust-binding agent. Calculations show that introducing these measures reduce the working moisture content of the coal to 22% and the ash content to 14%, with 30% increase in the calorific value. That lowers the annual fuel consumption by 23%, with considerable economic benefit.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"197 - 201"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161512","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
Insight into the Interaction of Coal Particle Size Distribution and Blending Ratio on Coke Quality 煤粉粒度分布和配煤比对焦炭质量影响的研究
IF 0.5
Coke and Chemistry Pub Date : 2025-07-04 DOI: 10.3103/S1068364X25600289
Mohammad Reza Ameri Siahuei, Mohammad Ataei, Farhang Sereshki
{"title":"Insight into the Interaction of Coal Particle Size Distribution and Blending Ratio on Coke Quality","authors":"Mohammad Reza Ameri Siahuei,&nbsp;Mohammad Ataei,&nbsp;Farhang Sereshki","doi":"10.3103/S1068364X25600289","DOIUrl":"10.3103/S1068364X25600289","url":null,"abstract":"<p>Coke is the fuel and main support for creating permeability in the blast furnace in the steel industry. It is produced by blending various types of coal. Therefore, studying the relationships between the intrinsic properties and preparation parameters of coal with the quality of the resulting coke is essential. Coke texture and mean size are the critical structural indicators of cokin, which also influence the reactive properties and Strength of the produced coke. In this study, the relationship between coke texture indices, the intrinsic properties of coal, and coal preparation parameters was evaluated for three types of Iranian coal. Regression analysis and Design Expert software were utilized for this purpose. To better understand the relationships between coal’s intrinsic properties and its reactive characteristics. FTIR, XRF, and SEM analyses were conducted. Regression analysis revealed correlations between four intrinsic properties of coal (ash content. volatile matter, fixed carbon content, and maceral composition) and two key coke texture indicators (pore count and coke porosity). The highest coefficient of determination (<i>R</i><sup>2</sup>) values were observed in the relationships between liptinite content and pore count (0.94) and between liptinite content and porosity percentage (0.87). Additionally, the study on coal blending ratios demonstrated that coal with a higher inertinite content exerted greater control over the number of pores and the porosity percentage of the produced coke when present in finer particle sizes.</p>","PeriodicalId":519,"journal":{"name":"Coke and Chemistry","volume":"68 3","pages":"263 - 282"},"PeriodicalIF":0.5,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161509","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
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