Solid Fuel Chemistry最新文献_第3页

Structure of Macroporous Carbon-Carbon Composite Obtained by Deposition of Pyrolytic Carbon on a Carbon Black Matrix 热解碳在炭黑基体上沉积制备的大孔碳-碳复合材料的结构

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-09-09 DOI: 10.3103/S0361521925700247

O. A. Knyazheva, A. V. Lavrenov, M. V. Trenikhin, O. V. Gorbunova, O. A. Kokhanovskaya, O. N. Baklanova, T. I. Gulyaeva, I. V. Muromtsev, R. M. Mironenko, A. B. Arbuzov

{"title":"Structure of Macroporous Carbon-Carbon Composite Obtained by Deposition of Pyrolytic Carbon on a Carbon Black Matrix","authors":"O. A. Knyazheva, A. V. Lavrenov, M. V. Trenikhin, O. V. Gorbunova, O. A. Kokhanovskaya, O. N. Baklanova, T. I. Gulyaeva, I. V. Muromtsev, R. M. Mironenko, A. B. Arbuzov","doi":"10.3103/S0361521925700247","DOIUrl":"10.3103/S0361521925700247","url":null,"abstract":"Macroporous carbon materials (macro-PCMs) were obtained using a matrix synthesis approach which consists in the deposition of pyrolytic carbon (PC) on a matrix of P803 carbon black (CB) during its high-temperature treatment in hydrocarbon medium. The microstructure, morphology, and porous structure of synthesized macro-PCMs were studied using a set of methods, such as transmission and scanning electron microscopy, X-ray diffraction, Raman spectroscopy, low-temperature nitrogen adsorption, mercury porosimetry, and helium pycnometry. It was shown that PC is deposited on the CB matrix surface both in the form of ordered graphene layers and as wedge-shaped particles. Two stages of the macro-PCM formation can be distinguished. At the first stage (α < 0.66 g of PC per g of CB), the most accessible macropores with sizes of >100 nm are predominantly filled with PC and then, at the second stage (α > 0.66 g of PC per g of CB), pores with sizes of <100 nm are also filled. A decrease in the specific pore volume V>100 from 0.48 to 0.26 cm3/gCB occurs with volumetric filling of large macropores (>100 nm) between aggregates, while the PC deposition at α > 0.66 g/g leads to a decrease in V<100 to 0.077 cm3/gCB and to an almost constant value for V>100.","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"59 5","pages":"345 - 354"},"PeriodicalIF":0.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 CH4 Characteristics of CO2 Displacement Coal under Thermomechanical Coupling 热力耦合作用下CO2置换煤CH4特性研究

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-09-09 DOI: 10.3103/S0361521925700260

Haoyu Xu

{"title":"Study on CH4 Characteristics of CO2 Displacement Coal under Thermomechanical Coupling","authors":"Haoyu Xu","doi":"10.3103/S0361521925700260","DOIUrl":"10.3103/S0361521925700260","url":null,"abstract":"When coal resources enter deep mining, the coal body is exposed to a complex geological condition characterized by “high ground stress”, “high osmotic pressure” and “high temperature”. Under such geological conditions, the permeability evolution law of the coal body is determined by the coexistence of multi-phase and multi-field coupling. Moreover, the permeability of the coal body directly impacts the safety of coal mining operations. Thermodynamic coupling tests were conducted on coking coal samples. The scanning electron microscope and high-pressure adsorption instrument were employed to characterize the pore structure and adsorption capacity on the coal surface. Subsequently, the changes in the coal pore structure and gas displacement efficiency before and after the thermodynamic coupling treatment were compared and analyzed. The results demonstrated that, under thermodynamic coupling, the adsorption of CH4 in the coal rises with the increase in pressure. However, as the temperature increases, the adsorption of CH4 in the coal exhibits an opposite tendency. With the growth of injection pressure, the replacement ratio of CH4 decreases linearly. Likewise, with the elevation of temperature, the CH4 replacement ratio also diminishes. After the thermodynamic coupling, the pore structure of the coal sample is well-developed and the porosity is enhanced. The research findings can offer a theoretical foundation and technical guidance for the study of multi-field coupled gas migration and coal seam gas treatment.","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"59 5","pages":"377 - 381"},"PeriodicalIF":0.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of Treatment of Fusainized Coal with Gaseous Media on the Initial Stages of Oxidation in an Air Environment 气体介质处理Fusainized煤对空气环境中氧化初始阶段的影响

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-09-09 DOI: 10.3103/S0361521925700302

S. A. Semenova, Yu. F. Patrakov, A. V. Yarkova, N. S. Zakharov, S. Yu. Lyrshchikov

{"title":"The Effect of Treatment of Fusainized Coal with Gaseous Media on the Initial Stages of Oxidation in an Air Environment","authors":"S. A. Semenova, Yu. F. Patrakov, A. V. Yarkova, N. S. Zakharov, S. Yu. Lyrshchikov","doi":"10.3103/S0361521925700302","DOIUrl":"10.3103/S0361521925700302","url":null,"abstract":"The peculiarities of changes in the composition of SS grade coal prone to spontaneous combustion after its treatment in gas environments of various chemical activities (nitrogen, air, and carbon dioxide) were investigated. The effect of gases on changes in the chemical composition of the coal surface and the adsorption capacity to oxygen during low-temperature oxidation of coal in the air was established. The EPR-spectroscopic data indicated the recombination of free radicals at the initial stages of coal oxidation followed by an intensification of their formation when coal samples were exposed to air. An analysis of changes in the rate of oxygen absorption and the composition of the gas phase indicated the highest sorption activity to oxygen of a coal sample treated in an inert nitrogen environment. The crushing of coal in an atmosphere of air led to the primary oxidation of the native outer surface and a decrease in the sorption capacity to oxygen at the initial stage of its determination. The adsorption of carbon dioxide on an accessible coal surface was accompanied by a transformation of its functional composition and, thereby, a slowdown at the initial stages of oxidation.","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"59 5","pages":"337 - 344"},"PeriodicalIF":0.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable Degradation of Commercial Coal Pitch by Aqueous Sodium Hypochlorite under Mild Conditions 次氯酸钠在温和条件下可持续降解商品煤沥青的研究

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-09-09 DOI: 10.3103/S0361521925700272

Yaoling Wang, Mingjie Ding, Meng Zhang

{"title":"Sustainable Degradation of Commercial Coal Pitch by Aqueous Sodium Hypochlorite under Mild Conditions","authors":"Yaoling Wang, Mingjie Ding, Meng Zhang","doi":"10.3103/S0361521925700272","DOIUrl":"10.3103/S0361521925700272","url":null,"abstract":"To develop a sustainable approach for coal pitch utilization, oxidation of commercial coal pitch in aqueous NaOCl solution was investigated. Effects of feeding methods, reaction temperature and time on coal pitch oxidation conversion rate were investigated. The maximum oxidation conversion rate was 17.4% at the optimized conditions of 50°C and 6 h, with multi-stage feeding method using 75–25–25 mL NaOCl solution. A mathematical regression model is developed to predict the oxidation conversion rate of coal pitch, which can accurately capture the reaction behavior observed in the experimental data (R2 = 0.976). The oxidized pitch residue was characterized by FTIR, and the extracted products were analyzed by GC-MS. The results suggest that NaOCl oxidation is an effective treatment under mild conditions, obtaining value-added organic chemicals. Hydroxyls and carbonyls were introduced into the structure of the oxidized coal-pitch; 33 organic-compound products were detected, including value-added chemicals, i.e. naphthalene, phenanthrene, and anthraquinone. Thus, the aqueous NaOCl treatment exhibits a good potential to improve the economy of commercial coal pitch application.","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"59 5","pages":"382 - 390"},"PeriodicalIF":0.9,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Features of Rhenium Distribution in Dictyonema Shales of the Baltic Basin (within the Leningrad Oblast) 波罗的海盆地（列宁格勒州内）Dictyonema页岩铼分布特征

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-07-22 DOI: 10.3103/S036152192570017X

V. I. Vyalov, T. A. Dyu, E. P. Shishov, A. V. Nastavkin

引用次数: 0

Hydrogenation Kinetics of Coal and Its Heavy Liquefied Products 煤及其重质液化产物的加氢动力学

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-07-22 DOI: 10.3103/S0361521925700235

Shigang Kang, Xinting Zhou, Songtao Liang, Hengfu Shui, Zhicai Wang, Zhiping Lei, Shibiao Ren, Jingchong Yan, Zhanku Li, Chunxiu Pan, Honglei Yan, Weidong Zhang

引用次数: 0

Isolation of Fulvic Acids by Extraction with n-Butanol 正丁醇萃取分离黄腐酸

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-07-22 DOI: 10.3103/S0361521925700181

S. I. Zherebtsov, K. M. Shpakodraev, K. S. Votolin, N. V. Malyshenko

引用次数: 0

Effect of Moisture on the Characteristics of Co-Incineration of Pulp and Paper Sludge and Municipal Waste 水分对纸浆、造纸污泥和城市垃圾共烧特性的影响

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-07-22 DOI: 10.3103/S0361521925700211

P. A. Maryandyshev, A. Brillard, A. P. Terekhin

引用次数: 0

Effect of Mine Water on Coal Physicochemical Properties and Spontaneous Combustion Characteristics 矿井水对煤理化性质及自燃特性的影响

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-07-22 DOI: 10.3103/S0361521925700223

Runzhi Li, Ensi Xue

{"title":"Effect of Mine Water on Coal Physicochemical Properties and Spontaneous Combustion Characteristics","authors":"Runzhi Li, Ensi Xue","doi":"10.3103/S0361521925700223","DOIUrl":"10.3103/S0361521925700223","url":null,"abstract":"To explore the impact of mine water composition on the spontaneous combustion properties of coal samples, the physicochemical characteristics of untreated raw coal (RC) and coal samples soaked in mine water (SC) were comparatively analyzed. The findings indicate that the chemical components of mine water significantly influence the spontaneous combustion behavior of coal. Electron microscopy experiments demonstrated noticeable changes in the surface morphology and pore structures of SC, leading to an increased oxidation rate and a heightened risk of spontaneous combustion. Energy dispersive spectroscopy (EDS) analysis revealed a decrease in carbon content alongside an increase in oxygen and sulfur concentrations on the SC surface, further facilitating the spontaneous combustion process. Simultaneous thermal analysis experiments indicated that characteristic temperatures, such as pyrolysis and ignition points of SC, were generally lower than those of RC, suggesting a stronger propensity for spontaneous combustion. 13C NMR results showed a higher content of oxygen-containing functional groups in SC compared to RC, although the aromatic carbon content remained similar. A comprehensive evaluation suggests that SC exhibits an enhanced tendency towards spontaneous combustion. Additionally, programmed temperature experiments revealed that temperatures at which SC generated spontaneous combustion indicator gases were consistently lower than those observed for RC, reinforcing the conclusion that SC possesses a higher spontaneous combustion tendency. In summary, soaking coal samples in mine water substantially increases their spontaneous combustion risk by modifying their physicochemical properties.","PeriodicalId":779,"journal":{"name":"Solid Fuel Chemistry","volume":"59 4","pages":"319 - 327"},"PeriodicalIF":0.9,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168545","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Relationship of Structural-Group Composition and Biological Activity of Humic Substances from Unoxidized and Oxidized Coals at Different Stages of Coalficiation 不同炭化阶段未氧化和氧化煤腐殖质结构-基团组成与生物活性的关系

IF 0.9 4区工程技术

Solid Fuel Chemistry Pub Date : 2025-07-22 DOI: 10.3103/S0361521925700168

K. S. Votolin, S. I. Zherebtsov, K. M. Shpakodraev

引用次数: 0