Petroleum Chemistry最新文献

筛选
英文 中文
Effects of Synthesis Conditions on the Physicochemical Properties and Hemolytic Activity of Beta Zeolites 合成条件对β沸石理化性质及溶血活性的影响
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-23 DOI: 10.1134/S0965544125600973
E. Yu. Brazovskaya, Yu. A. Alikina, A. Yu. Artamonov, O. V. Shamova, O. Yu. Golubeva
{"title":"Effects of Synthesis Conditions on the Physicochemical Properties and Hemolytic Activity of Beta Zeolites","authors":"E. Yu. Brazovskaya,&nbsp;Yu. A. Alikina,&nbsp;A. Yu. Artamonov,&nbsp;O. V. Shamova,&nbsp;O. Yu. Golubeva","doi":"10.1134/S0965544125600973","DOIUrl":"10.1134/S0965544125600973","url":null,"abstract":"<p>The study investigates the effects of synthesis conditions on the physicochemical properties and biological activity of Beta zeolites. Specifically, it addresses the effects of the tetraethylammonium hydroxide (TEAOH) content in the reaction mixture on the crystallinity, particle size and morphology, textural properties, acidity, and hemolytic activity of the zeolites synthesized. Reducing the TEAOH content by factors of 2, 4, and 6 compared to the reference composition was found to lower the zeolite crystallinity, increase the mean particle size (from 240 to 515 nm), change the particle morphology, and reduce the concentration of acid sites (from 822 to 638 µmol/g). Hemolytic activity tests demonstrated that the zeolite toxicity for human erythrocytes increased with a reduction in the TEAOH content.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 4","pages":"496 - 505"},"PeriodicalIF":1.1,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168457","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
Enhancing Drilling Efficiency: A Comprehensive Review of Bit Hydraulic Optimization in Rotary Drilling Operations 提高钻井效率:旋转钻井中钻头水力优化的综合综述
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-22 DOI: 10.1134/S0965544125040097
Dena Mahmood, Akhmal Sidek, Kenny Anak Ganie, Nada S. Al-Zubaidi
{"title":"Enhancing Drilling Efficiency: A Comprehensive Review of Bit Hydraulic Optimization in Rotary Drilling Operations","authors":"Dena Mahmood,&nbsp;Akhmal Sidek,&nbsp;Kenny Anak Ganie,&nbsp;Nada S. Al-Zubaidi","doi":"10.1134/S0965544125040097","DOIUrl":"10.1134/S0965544125040097","url":null,"abstract":"<p>The hydraulic system plays a role in drilling operations significantly impacting drilling efficiency and costs. This study extensively reviews the literature on optimizing bit hydraulics from 2012 to the present. Employing a systematic review approach, the study identifies and synthesizes key trends and findings in bit hydraulic optimization. Getting the most out of your drilling operation starts with a well-tuned system, especially when drilling through tough rocks like shale. By carefully designing and maintaining your hydraulics and paying close attention to things like nozzle size, weight applied to the drill bit, and how fast it spins, you can significantly improve your drilling speed and keep your costs down. The review addresses a primary challenge: “balling,” where cuttings accumulate on the bit face, impeding the drilling process. A well-optimized bit hydraulic design prevents balling and enhances the bottom-hole cleaning, mitigating disruptions in drilling activities. This paper contributes to a nuanced understanding of the importance of bit hydraulic optimization in drilling operations, presenting a detailed overview of relevant research papers. The inclusion of diverse perspectives and methodologies enriches the discourse surrounding hydraulic optimization. The exploration of concepts such as Bit Hydraulic Horsepower, Bit Hydraulic Optimization, Bit Impact Force, Hydraulic Optimization, and Nozzle Velocity further illuminates the multifaceted nature of bit hydraulic optimization and its broader implications for advancing the efficiency and cost-effectiveness of rotary drilling operations.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 5","pages":"550 - 557"},"PeriodicalIF":1.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122342","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
Using Gaviscon Expired Drug as Corrosion Inhibitor in Acidic Solution to Reduce Corrosion in Carbon Steel 用加夫iscon过期药物作为酸性溶液中的缓蚀剂减少碳钢的腐蚀
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-22 DOI: 10.1134/S0965544125040103
Shaimaa A. Naser, Aya A. Shahir, Diyar Abdul Kareem, Hadeer M. Aljoubory, Haneen A. Basim, Rejwan Kh. Ibrahim
{"title":"Using Gaviscon Expired Drug as Corrosion Inhibitor in Acidic Solution to Reduce Corrosion in Carbon Steel","authors":"Shaimaa A. Naser,&nbsp;Aya A. Shahir,&nbsp;Diyar Abdul Kareem,&nbsp;Hadeer M. Aljoubory,&nbsp;Haneen A. Basim,&nbsp;Rejwan Kh. Ibrahim","doi":"10.1134/S0965544125040103","DOIUrl":"10.1134/S0965544125040103","url":null,"abstract":"<p>The use of Gaviscon expired drug as the corrosion inhibitor on the carbon steel was studied in the 0.1 M HCl solution at 303, 313, 323 and 333 K by electrochemical method. Gaviscon was demonstrated to be an effective inhibitor for carbon steel, the efficiency reached 80.7% at concentration of inhibitor 24 mL/L at 303 K, 91.973% for 48 mL/L at 313 K, 89.42% for 48 mL/L at 323 K and 97.81% for 24 mL/L at 333 K. The polarization resistance of Gaviscon was revealed, and the highest value was 121.758 for 24 mL/L at 333 K. The surface morphology of the carbon steel was analyzed using scanning electron microscopy (SEM) to show the film randomly distributed throughout the entire carbon steel surface. The antibacterial activity of the inhibitor was also tested by agar well diffusion which exhibit that no inhibition zone was observed, indicating that the Gaviscon drug was reactivity against <i>E. coli.</i> and <i>S. aureus</i> bacterial. Fourier-transform infrared spectroscopy (FTIR) for the Gaviscon drug confirmed the inhibitory role of inhibition efficiency.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 5","pages":"600 - 608"},"PeriodicalIF":1.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122343","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
Jet Impingement Heat Transfer on Heated Block by Using Different Nozzle Arrangements 不同喷嘴布置对受热块射流冲击传热的影响
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-18 DOI: 10.1134/S0965544125040073
Rafid Abdulrazaq Jabr, Kadhum Audaa Jehhef, Salah H. Abid Aun
{"title":"Jet Impingement Heat Transfer on Heated Block by Using Different Nozzle Arrangements","authors":"Rafid Abdulrazaq Jabr,&nbsp;Kadhum Audaa Jehhef,&nbsp;Salah H. Abid Aun","doi":"10.1134/S0965544125040073","DOIUrl":"10.1134/S0965544125040073","url":null,"abstract":"<p>The current paper presents to study effect of consuming a direct slot jet inside a square channel to increase the heat transfer convection in a channel prepared with a heated block and slot jet with different nozzle arrangements. In numerical solution, to construct a two-dimensional domain for simulation, the SOLIDWORKS 2018 software was used, and the numerical tool (ANSYS Fluent Workbench 2020 R2) is employed. The study included the effects of the following parameters such as slot Nozzle opening <i>d</i> = 3, 4, and 5 mm, slot Nozzle distance to opening ratio <i>x/d</i> = 2, 4 and 8, slot Nozzle velocity <i>v</i><sub><i>j</i></sub> = 1, 2, 4 m/s, Heat flux <i>q</i>′′ = 1000 W/m<sup>2</sup>, Duct inlet velocity <i>u</i> = 1 m/s, slot Nozzle hit <i>h</i> = 3.5 cm and slot nozzle types flat, converge, diverges. The present numerical study uses a computational domain of a square duct with a length of 90 cm and a side dimension of 20 cm, which is used for air passage. The main airflow from the surroundings entered the channel inlet to achieve a fully developed flow is about 42.5 cm. The results showed that using the convergent nozzle, which increased in <i>Nu</i> by 73% compared to that of the divergent nozzle, and the enhancement of <i>Nu</i> is 77% associated with that of the flat nozzle when using the convergent Nozzle at <i>x</i><sub><i>j</i></sub> = 6 mm and <i>d</i><sub><i>j</i></sub> = 3 mm.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 5","pages":"609 - 623"},"PeriodicalIF":1.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122141","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
Experimental Investigation of Heat Transfer Behavior in Spouted Bed Reactors under Different Operating Conditions 不同工况下喷淋床反应器传热特性的实验研究
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-18 DOI: 10.1134/S0965544125040085
Hasan A. Abdulwahab, Abbas J. Sultan, Amer A. Abdulrahman, Hasan Sh. Majdi, Haydar A. S. Aljaafari, Zahraa W. Hasan, Laith S. Sabri, Bashar J. Kadhim, Jamal M. Ali, Muthanna H. Al-Dahhan
{"title":"Experimental Investigation of Heat Transfer Behavior in Spouted Bed Reactors under Different Operating Conditions","authors":"Hasan A. Abdulwahab,&nbsp;Abbas J. Sultan,&nbsp;Amer A. Abdulrahman,&nbsp;Hasan Sh. Majdi,&nbsp;Haydar A. S. Aljaafari,&nbsp;Zahraa W. Hasan,&nbsp;Laith S. Sabri,&nbsp;Bashar J. Kadhim,&nbsp;Jamal M. Ali,&nbsp;Muthanna H. Al-Dahhan","doi":"10.1134/S0965544125040085","DOIUrl":"10.1134/S0965544125040085","url":null,"abstract":"<p>Spouted bed reactors (SBRs) are highly valued for their effectiveness in chemical and biochemical processes due to their mixing and heat transfer capabilities. Understanding the heat transfer mechanisms in these reactors is necessary. This research delves into the heat transfer behavior of SBRs, which plays a role in enhancing their performance under operational conditions. The study conducted experiments to measure the heat transfer coefficient (HTC) at varying gas velocities (ranging from 0.32 to 0.74 m/s) at radial positions (r/R = 0, ±0.28, ±0.56, and ±0.85) and axial levels (H/D = 0.8, 2.1, and 3.5) within the spouted bed (SB) column using a technique, for the assessment of local heat transfer coefficients (LHTCs). The results we obtained revealed the velocity of the gas, its radial position in the reactor, and its axial height. For instance, higher gas speeds led to heat transfer efficiency and variations in radial positions highlighted how the reactor’s shape influences heat transfer dynamics. It’s worth noting that increasing the gas speed from the lowest to the level tested resulted in a 25% increase in heat transfer coefficients. These discoveries provide insights for improving the design and performance of SBRs with ranging applications in industries that rely on effective heat transfer processes.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 5","pages":"576 - 588"},"PeriodicalIF":1.1,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145122121","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
Synthesis and Investigation of Catalysts Supported on Micro–Mesoporous MFI Zeolites in Hydroisodewaxing of Diesel Fuels 微介孔MFI分子筛负载型柴油加氢脱蜡催化剂的合成与研究
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-16 DOI: 10.1134/S0965544125600936
M. I. Rubtsova, L. D. Zatsepina, Y. Aljajan, E. M. Smirnova, A. M. Kozlov, N. A. Vinogradov, A. I. Guseva, A. A. Pimerzin, A. P. Glotov
{"title":"Synthesis and Investigation of Catalysts Supported on Micro–Mesoporous MFI Zeolites in Hydroisodewaxing of Diesel Fuels","authors":"M. I. Rubtsova,&nbsp;L. D. Zatsepina,&nbsp;Y. Aljajan,&nbsp;E. M. Smirnova,&nbsp;A. M. Kozlov,&nbsp;N. A. Vinogradov,&nbsp;A. I. Guseva,&nbsp;A. A. Pimerzin,&nbsp;A. P. Glotov","doi":"10.1134/S0965544125600936","DOIUrl":"10.1134/S0965544125600936","url":null,"abstract":"<p>A series of micro–mesoporous ZSM-5 zeolites with SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> molar ratios ranging from 40 to 280 were synthesized hydrothermally using natural aluminosilicate halloysite nanotubes (HNTs) as a precursor for silica and alumina and as a co-template for the generation of mesopores. The physicochemical properties of the synthesized materials were characterized by energy dispersive X-ray fluorescence, X-ray diffraction, scanning and transmission electron microscopy, low-temperature nitrogen adsorption–desorption, and temperature-programmed ammonia desorption. Using the zeolite sample with an optimal combination of physicochemical properties, a Pt catalyst was prepared and tested in hydroisodewaxing of a hydrotreated diesel fuel (DF) feedstock. The catalyst supported on the HNT-based zeolite exhibited high performance in the isodewaxing of middle distillates, thus producing arctic diesel fuels at lower temperatures than those recorded for the catalyst supported on a commercial zeolite with a similar SiO<sub>2</sub>/Al<sub>2</sub>O<sub>3</sub> ratio.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 4","pages":"378 - 388"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166118","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
Recent Advances in the Development of Zeolite Catalysts for Propane Dehydrogenation: I. Zeolite-Supported Platinum Catalysts (A Review) 丙烷脱氢用沸石催化剂的研究进展:ⅰ。沸石载铂催化剂(综述)
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-16 DOI: 10.1134/S0965544125600857
D. V. Bruter, S. V. Konnov
{"title":"Recent Advances in the Development of Zeolite Catalysts for Propane Dehydrogenation: I. Zeolite-Supported Platinum Catalysts (A Review)","authors":"D. V. Bruter,&nbsp;S. V. Konnov","doi":"10.1134/S0965544125600857","DOIUrl":"10.1134/S0965544125600857","url":null,"abstract":"<p>This review provides an analysis of the advances in the development of zeolite catalysts for propane dehydrogenation reported over the past two decades. It discusses the main distinctive features of the industrially important reaction of propane dehydrogenation to propylene, including its capabilities, limitations, mechanism, and the actually achieved catalytic performance parameters such as feed conversion degree and propylene selectivity. Particular emphasis is placed on the stability of the catalytic parameters in time on stream and in reaction-regeneration cycles. An overview of the existing strategies for the synthesis of metal-based and oxide-based catalysts supported on molecular sieves is provided. To ensure a better understanding of the current research trends, the advanced approaches developed in recent years are discussed in a separate section. For each catalyst class, their catalytic performance is compared with that of the oxide-based catalysts commonly applied for this process. Particular attention is paid to research on “structure–catalytic performance” and “synthesis conditions–structure” correlations for active sites. Finally, conclusions are made regarding the most promising strategies that may be of use for the development of a new generation of industrial catalysts.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 4","pages":"331 - 368"},"PeriodicalIF":1.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166269","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
Zinc Removal from Wastewater by Emulsion Liquid Membrane Technique: Utilizing Response Surface Methodology to Improve Optimization and Analyze Data 乳状液膜法除锌废水:利用响应面法改进优化及数据分析
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-11 DOI: 10.1134/S096554412504005X
Ahmed Salah Al-Shati, Hussein Hantoosh Alaydamee, Abbas J. Sultan, Zahraa W. Hasan, Bashar J. Kadhim, Laith S. Sabri, Hasan Sh. Majdi
{"title":"Zinc Removal from Wastewater by Emulsion Liquid Membrane Technique: Utilizing Response Surface Methodology to Improve Optimization and Analyze Data","authors":"Ahmed Salah Al-Shati,&nbsp;Hussein Hantoosh Alaydamee,&nbsp;Abbas J. Sultan,&nbsp;Zahraa W. Hasan,&nbsp;Bashar J. Kadhim,&nbsp;Laith S. Sabri,&nbsp;Hasan Sh. Majdi","doi":"10.1134/S096554412504005X","DOIUrl":"10.1134/S096554412504005X","url":null,"abstract":"<p>Metals’ potential hazards have drawn greater attention to the influence of metal pollution on water, making it a crucial subject of study in recent environmental research. This research aligns with the Sustainable Development Goals (SDGs), that aim to protect the world by addressing environmental concerns. As a consequence, understanding the impact of metal pollution on water is an essential aspect of the SDGs’ efforts to improve environmental preservation. This study provides insight into the removal of zinc ions from industrial wastewater using emulsion liquid membrane (ELM) technology. A study was conducted to investigate the use of ELM technology for removing zinc ions from industrial wastewater. Previous studies have shown that ELM can easily remove metals in their ionic form, but the presence of other organic or inorganic compounds like sulfates, phosphates, and carbonates in industrial wastewater increases their solubility and complexity of the removal. To develop the liquid membrane, a surfactant called Sorbitan monooleate (Span 80), an extractant called bis-2-ethylhexyl phosphoric acid (D2EHPA), hydrogen chloride as a reagent, and kerosene as a diluent were used. The study investigated the impact of surfactant concentration, homogenizer speed, extractant concentration, and external phase pH on zinc ion removal using a Box-Behnken design based on Response Surface Methodology (RSM). The results showed that surfactant concentration and pH had the greatest impact on removal efficiency, while homogenizer speed and surfactant extractant had a lower impact on zinc removal. The investigation adjusted numerous parameters to achieve a zinc recovery rate of more than 93% from the bioleaching solution. The most beneficial conditions were a stirring speed of 250 rpm for 10 min, 4.75% v/v Span 80, a homogenizer speed of 11 212 rpm for 8 min, a feed phase pH of 5 or 4.9, and 6% v/v D2EHPA in kerosene.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 5","pages":"589 - 599"},"PeriodicalIF":1.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145121794","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
Formation of Titanium Dioxide by Hydrolysis Catalyst: Effect of Calcination Temperature on Microstructure Characteristics of Polymeric Nanocomposites 水解催化剂制备二氧化钛:煅烧温度对聚合纳米复合材料微观结构特征的影响
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-11 DOI: 10.1134/S0965544125040061
Rasheed Lateef Jawad, Raghad Subhi Abbas
{"title":"Formation of Titanium Dioxide by Hydrolysis Catalyst: Effect of Calcination Temperature on Microstructure Characteristics of Polymeric Nanocomposites","authors":"Rasheed Lateef Jawad,&nbsp;Raghad Subhi Abbas","doi":"10.1134/S0965544125040061","DOIUrl":"10.1134/S0965544125040061","url":null,"abstract":"<p> In this study, titanium dioxide (TiO<sub>2</sub>) nanoparticles were prepared hydrolysis and condensation process. To obtain the anatase and rutile phases, the prepared product was subjected to a calcination process at a temperature of 400 and 700°C. Nanocomposites were adjusted from polymer blend of polyvinyl alcohol (PVA), polyethylene glycol (PEG), and polyvinylpyrrolidone (PVP) as a matrix with specific percentages (PVA 60, PEG 10, and PVP 5 wt %), and different concentrations (0 and 25 wt %) of TiO<sub>2</sub> NPs in the anatase and rutile phases. Several description techniques like X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), and energy dispersive spectroscopy (EDS) are utilized to investigate the impact of temperature on the crystalline size, crystalline phase, and shape of produced TiO<sub>2</sub> nanoparticles. XRD patterns show the presence of sharp peaks which proved that it had high degree of crystallization. The anatase phase formation occurs at 400°C, while the transition to rutile phase occurred at 700°C as a result of calcination process. The crystallite size was determined using the Scherer and Williamson‒Hall (W‒H) equations, micro-strain, degree of crystallinity, volume of the unit cell, and dislocation. An increase in calcination temperature leads to increase in both crystalline size and degree of crystallinity. FE-SEM micrographs reveal that increasing the temperature led to rise the size of TiO<sub>2</sub> nanoparticles. In the anatase phase, the particles exhibit a spherical shape, while in the rutile phase they often have a prismatic shape. The calcination at 700°C is considered more desirable and applicable, because of the incorporation of rutile with anatase—the heterophase—into the crystal structure. It leads to synergistic effects between the two crystal structures due to increased thermodynamic stability, which makes it effective in photodegradation of various pollutants in the environment.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 5","pages":"566 - 575"},"PeriodicalIF":1.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145121793","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
Dual-Zeolite Catalysts for Synthesis of Liquid Hydrocarbon Fuels 合成液态烃燃料的双沸石催化剂
IF 1.1 4区 工程技术
Petroleum Chemistry Pub Date : 2025-07-04 DOI: 10.1134/S0965544125600791
M. A. Zubkova, S. I. Sulima, A. A. Chemes, I. N. Zubkov, D. A. Ponomarev, R. E. Yakovenko
{"title":"Dual-Zeolite Catalysts for Synthesis of Liquid Hydrocarbon Fuels","authors":"M. A. Zubkova,&nbsp;S. I. Sulima,&nbsp;A. A. Chemes,&nbsp;I. N. Zubkov,&nbsp;D. A. Ponomarev,&nbsp;R. E. Yakovenko","doi":"10.1134/S0965544125600791","DOIUrl":"10.1134/S0965544125600791","url":null,"abstract":"<p>A series of bifunctional cobalt composite catalysts supported on mixed zeolites were synthesized to enhance the selectivity towards liquid fuels rich in branched hydrocarbons. Given that the catalysts were prepared with an alumina binder and that the mixed zeolites consisted of two molecular sieves, the finished samples were generally formulated as Co–Al<sub>2</sub>O<sub>3</sub>/SiO<sub>2</sub> + [ZSM-5 + (ZSM-23, Beta, SAPO-11)] + Al<sub>2</sub>O<sub>3</sub>. The catalysts were tested in Fischer–Tropsch synthesis at 240°C, 2.0 MPa, an H<sub>2</sub>/CO ratio of 2 : 1, and a syngas hourly space velocity (GHSV) of 1000 h<sup>–1</sup>. The catalyst supported on ZSM-5+Beta exhibited the highest selectivity towards C<sub>5</sub>–C<sub>10</sub> hydrocarbons. The ZSM-5+ZSM-23-supported catalyst turned out to be the most selective towards branched hydrocarbons, which, in turn, favored the production of a diesel fraction with optimal low-temperature properties.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 4","pages":"389 - 396"},"PeriodicalIF":1.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145162006","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
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信