Petroleum Chemistry最新文献

Properties of PdAg/Al2O3 Egg–Shell Single-Atom Catalysts in Front-End Hydrogenation of Acetylene PdAg/Al2O3 蛋壳单原子催化剂在乙炔前端加氢反应中的特性

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-09-17 DOI: 10.1134/s0965544124050165

I. S. Mashkovsky, P. V. Markov, G. N. Baeva, N. S. Smirnova, A. E. Vaulina, D. P. Mel’nikov, A. Yu. Stakheev

{"title":"Properties of PdAg/Al2O3 Egg–Shell Single-Atom Catalysts in Front-End Hydrogenation of Acetylene","authors":"I. S. Mashkovsky, P. V. Markov, G. N. Baeva, N. S. Smirnova, A. E. Vaulina, D. P. Mel’nikov, A. Yu. Stakheev","doi":"10.1134/s0965544124050165","DOIUrl":"https://doi.org/10.1134/s0965544124050165","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Two samples of PdAg/Al2O3 egg–shell single-atom catalysts, with Ag/Pd ratios of 1 : 1 and 3 : 1, were synthesized and characterized by TEM, XPS, and DRIFTS-CO methods. The formation of bimetallic PdAg alloy nanoparticles with single-atom Pd1 active sites was demonstrated. Furthermore, a physicochemical characterization showed a egg–shell distribution of the active component. The catalytic performance of the samples was tested in front-end selective hydrogenation of acetylene. The H2/C2H2 ratio in the model mixture was varied from 20 to 60. Under front-end acetylene hydrogenation conditions, the highest ethylene selectivity (about 87 at 90% acetylene conversion) was achieved in the presence of the Pd1Ag3/Al2O3 catalyst at H2/C2H2 = 20. Finally, it was shown that, unlike the monometallic Pd catalyst, the Ag-promoted catalysts were completely free of any local thermal runaway effect.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252995","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

By-Products of Arabian Light Crude Oil Refining: Profiling Properties for Bitumen Production 阿拉伯轻质原油提炼副产品：沥青生产的特性分析

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-09-17 DOI: 10.1134/s0965544124050177

Catarina Varanda, Miguel P. Almeida, Inês Portugal, Jorge Ribeiro, Carlos M. Silva, Artur M. S. Silva

{"title":"By-Products of Arabian Light Crude Oil Refining: Profiling Properties for Bitumen Production","authors":"Catarina Varanda, Miguel P. Almeida, Inês Portugal, Jorge Ribeiro, Carlos M. Silva, Artur M. S. Silva","doi":"10.1134/s0965544124050177","DOIUrl":"https://doi.org/10.1134/s0965544124050177","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Understanding the value of refinery by-products is crucial for assessing their potential in bitumen production. To achieve this task, the asphaltic residue, vacuum residue, and three different aromatic extracts obtained as by-products in the refining process of base oils have been characterized using various methods, including standard methods for bitumen grading (penetration, softening point, Fraass breaking point, and ageing stability), SARA analysis, proton nuclear magnetic resonance spectroscopy (1H NMR), and high-performance gel permeation chromatography (HP-GPC). Additionally, the penetration index and three significant colloidal indices based on SARA fractions have been calculated. The results show that the by-products possess distinct properties and chemical compositions. The most striking fact is that the asphaltic residue lacks saturates, while the three aromatic extracts lack asphaltenes. Due to different processing conditions, the two solvent-neutral (SN) type extracts were found to be similar, though distinct from the bright stock (BS) extract, which had a higher content of saturates and a lower content of aromatics. The comprehensive characterization of these by-products (residues and extracts) is essential for understanding their structure and planning their valorization in oil refineries, for example in the production of bitumens with specific properties. When combined with statistical and phenomenological modeling, the systematic analytical procedure presented here is useful for guiding the repurposing of oil refinery by-products.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142252996","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

Modification of Zeolites with Tin to Synthesize Pt–Sn/MFI Catalysts for Propane Dehydrogenation 用锡改性沸石以合成用于丙烷脱氢的 Pt-Sn/MFI 催化剂

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-09-16 DOI: 10.1134/s096554412404008x

A. B. Ponomaryov, A. V. Smirnov, M. V. Shostakovsky, E. V. Pisarenko, A. G. Popov, M. A. Kashkina

引用次数: 0

Investigation of the Dependence of the Rate of Cyclohexene Alkoxycarbonylation with Cyclohexanol and CO on the p-Toluenesulfonic Acid Monohydrate Concentration and Temperature 研究环己醇与 CO 发生环己烯烷氧基羰基化的速率与对甲苯磺酸一水合物浓度和温度的关系

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-09-11 DOI: 10.1134/s0965544124040042

N. T. Sevostyanova, S. A. Batashev

{"title":"Investigation of the Dependence of the Rate of Cyclohexene Alkoxycarbonylation with Cyclohexanol and CO on the p-Toluenesulfonic Acid Monohydrate Concentration and Temperature","authors":"N. T. Sevostyanova, S. A. Batashev","doi":"10.1134/s0965544124040042","DOIUrl":"https://doi.org/10.1134/s0965544124040042","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The effects of the p-toluenesulfonic acid monohydrate (TsOH∙H2O) concentration on the alkoxycarbonylation of cyclohexene over a Pd(PPh3)2Cl2–PPh3–TsOH∙H2O catalytic system were quantified at 363–383 K. Within this temperature range, the correlation between the cyclohexyl cyclohexanecarboxylate production rate and the TsOH∙H2O concentration was found to be similar to an S-shaped curve. Based on these data, as well as previous findings with regard to the effects of water and TsOH∙H2O concentrations on the cyclohexene methoxycarbonylation rate, the hydride mechanism for the alkoxycarbonylation process was updated by adding relevant ligand exchange reactions between ballast palladium complexes, specifically reactions that produce a palladium aqua complex. The accordingly-modified kinetic equation for cyclohexene alkoxycarbonylation with cyclohexanol and CO was found to be consistent with the experimental data. Effective constants were evaluated for the modified kinetic equation over the studied temperature range. A number of relevant parameters—namely, the effective activation energy and the changes in enthalpy, entropy, and Gibbs free energy during the ligand exchange between the complexes Pd(PPh3)2(C6H11OH)2 and Pd(PPh3)2(H2O)2—were further evaluated in light of the activated complex theory. This reaction was found to be nearly equilibrium at 373 K.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186405","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}

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Direct Electric Heating in Chemical Processes (A Review) 化学工艺中的直接电加热（综述）

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-08-30 DOI: 10.1134/s0965544124040030

P. S. Kuznetsov, K. I. Dement’ev, T. A. Palankoev, A. L. Maximov

引用次数: 0

An EPR Study of the Effect of Thermochemical Processes on the Transformations of the Organic Matter and Mineral Matrix of a Bituminous Rock 热化学过程对沥青岩有机物和矿物基质转化影响的 EPR 研究

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-08-30 DOI: 10.1134/s0965544124040078

G. P. Kayukova, N. M. Khasanova, A. N. Mikhailova, Z. R. Nasyrova, A. V. Vakhin

{"title":"An EPR Study of the Effect of Thermochemical Processes on the Transformations of the Organic Matter and Mineral Matrix of a Bituminous Rock","authors":"G. P. Kayukova, N. M. Khasanova, A. N. Mikhailova, Z. R. Nasyrova, A. V. Vakhin","doi":"10.1134/s0965544124040078","DOIUrl":"https://doi.org/10.1134/s0965544124040078","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>Thermochemical transformations of the organic matter and mineral matrix of the bituminous oil-containing rock from the productive stratum of Permian heavy crude deposits (Ashal’cha oilfield) at 350 and 600°С in a hydrogen medium were studied by electron paramagnetic resonance (EPR) spectroscopy. A rock sample taken from a depth of 117.5–118.5 m was studied before and after hydrothermal treatment at 300°С in the presence of an aqueous phase. Comparison of the EPR spectra shows that, as compared to the initial rock, an increase in the temperature to the “oil window” level, 350°С, leads to a fourfold increase in the intensity of the signal from free organic radicals (С350), and after hydrothermal treatment its intensity increases by a factor of 5. This fact characterizes the oil-generation potential of the rock with the formation of liquid and gaseous hydrocarbons. On reaching the “oil and gas window” temperature (600°С), organic carbon radicals (С600) were not detected. This fact suggests that the rock from productive deposits of the Permian age virtually completely realizes its oil-generation potential at 350°C. The amount of Mn2+ ions in calcite after the hydrothermal treatment gradually decreases with an increase in the pyrolysis temperature. Iron oxides and hydroxides were detected as concomitant compounds. They can exhibit catalytic properties in hydrothermal and pyrolytic processes. The presence of minerals of iron and manganese in different oxidation states suggests nonequilibrium conditions of the rock alteration. Thus, EPR can serve as a nondestructive method for simultaneous monitoring of the mineral composition and organic matter of rocks.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186407","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

Binary Mixtures (AlknAlCl3–n + Alk2Mg) as Catalyst Components for Ethylene Polymerization and the Role of Titanium Oxidation State in Their Catalytic Activity 作为乙烯聚合催化剂组分的二元混合物（AlknAlCl3-n + Alk2Mg）及其催化活性中钛氧化态的作用

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-08-30 DOI: 10.1134/s0965544124040054

V. A. Tuskaev, D. A. Kurmaev, S. Ch. Gagieva, M. D. Evseeva, M. I. Buzin, E. K. Golubev, B. M. Bulychev

{"title":"Binary Mixtures (AlknAlCl3–n + Alk2Mg) as Catalyst Components for Ethylene Polymerization and the Role of Titanium Oxidation State in Their Catalytic Activity","authors":"V. A. Tuskaev, D. A. Kurmaev, S. Ch. Gagieva, M. D. Evseeva, M. I. Buzin, E. K. Golubev, B. M. Bulychev","doi":"10.1134/s0965544124040054","DOIUrl":"https://doi.org/10.1134/s0965544124040054","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>It was shown by EPR spectroscopy that Ti(IV) was gradually reduced to Ti(III) when a titanium(IV) dichloride complex with a saligenin ligand was used as a model pre-catalyst in the presence of (EtnAlCl3–n + Bu2Mg) as an activator. Pre-activation of this complex (by stirring in an inert atmosphere with a half-load of the Al/Mg activator before being introduced into the reactor) significantly (about twofold) enhanced its catalytic activity, up to 4100 kgPE molTi–1 h–1 atm–1. All the synthesized polyethylene samples were linear ultrahigh-molecular-weight polymers (UHMWPEs) with Mv = 1.0–3.5×106 g/mol. This pre-activation technique was further employed to test a series of Al/Mg activators that differed in the nature of their organometallic compounds and in their Al/Mg molar ratio. The test data suggest that the catalytic system under study had active sites with titanium being present mainly in the oxidation state of +3. Most samples of UHMWPE produced with the pre-activated complex proved suitable for solvent-free processing into high-strength oriented films.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186408","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

Generation of Hydrocarbon Gases in Stepwise Pyrolysis of Artificially Matured Domanik Oil Shale Kerogen 人工成熟的多马尼克油页岩岩浆逐步热解过程中产生的碳氢化合物气体

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-08-13 DOI: 10.1134/s0965544124040029

N. S. Burdelnaya, D. A. Bushnev, A. A. Ilchenko

{"title":"Generation of Hydrocarbon Gases in Stepwise Pyrolysis of Artificially Matured Domanik Oil Shale Kerogen","authors":"N. S. Burdelnaya, D. A. Bushnev, A. A. Ilchenko","doi":"10.1134/s0965544124040029","DOIUrl":"https://doi.org/10.1134/s0965544124040029","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>A series of kerogen samples were isolated from Domanik oil shale before and after hydrothermal treatment in an autoclave (at 250–375°C, for 24 h). Than composition of the C1–C5 hydrocarbon gases generated in stepwise (300–800°C) pyrolysis of these kerogens was characterized by gas chromatography. According to the calculated EASY %Ro and Rock-Eval pyrolysis data, the highest maturity level of the organic matter reached by the hydrothermal treatment corresponded to the MC4 stage. As the hydrothermal treatment temperature of the oil shale was elevated up to 325°C, the dry pyrolysis of residual kerogen led to the predominant generation of wet gases in which C2+ prevailed over methane; at temperatures above 325°C, methane was predominant. Based on the pattern of the generation curves plotted individually for C1, C2, C3, C2–C5, and C4–C5 gases, methane was found to have additional sources in the kerogen structure, compared to C2+ gases. Ethane and ethylene are generated simultaneously via the free-radical decomposition of alkyl structures; moreover, at high pyrolysis temperatures, ethane and ethylene have some precursors other than those of C3+ gases.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186409","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

Effect of Wave Treatment on the Antioxidant Activity of Resins and Asphaltenes of Heavy High-Viscosity Crude Oil 波浪处理对重质高粘度原油树脂和沥青质抗氧化活性的影响

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-08-13 DOI: 10.1134/s0965544124040017

Yu. V. Loskutova, N. V. Sizova, N. V. Yudina

{"title":"Effect of Wave Treatment on the Antioxidant Activity of Resins and Asphaltenes of Heavy High-Viscosity Crude Oil","authors":"Yu. V. Loskutova, N. V. Sizova, N. V. Yudina","doi":"10.1134/s0965544124040017","DOIUrl":"https://doi.org/10.1134/s0965544124040017","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>The effect of low-frequency acoustic treatment and of constant and alternating electromagnetic fields on the reactivity of crude oil and resin–asphaltene components was studied. Irrespective of the kind of the wave treatment, the amount of asphaltenes and resins separated from the treated oil decreases owing the breakdown of aggregates of complex structural units with the release of hydrocarbons of various structures, occluded in the molecular complexes, into the liquid phase. The treatment involves cleavage of weak hydrogen bonds with the formation of additional reaction sites in paramagnetic asphaltenes and diamagnetic resins. The reactivity of both crude oil and the separated resin and asphaltene fractions significantly changes owing to the formation of new reactive structures in the physical fields. These structures differ not only in the size and structure but also in the antioxidant properties. The data obtained allow more detailed evaluation of the effect exerted by various kinds of wave treatment on the composition and structure of asphaltenes and resins of heavy high-viscosity crude.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186444","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

Prediction of Flash Points of Petroleum Middle Distillates Using an Artificial Neural Network Model 利用人工神经网络模型预测石油中间馏分的闪点

IF 1.4 4区工程技术

Petroleum Chemistry Pub Date : 2024-08-13 DOI: 10.1134/s0965544124040066

Kahina Bedda

{"title":"Prediction of Flash Points of Petroleum Middle Distillates Using an Artificial Neural Network Model","authors":"Kahina Bedda","doi":"10.1134/s0965544124040066","DOIUrl":"https://doi.org/10.1134/s0965544124040066","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3>An artificial neural network (ANN) model of a multilayer perceptron-type was developed to predict flash points of petroleum middle distillates. The ANN model was designed using 252 experimental data points taken from the literature. The properties of the distillates, namely, specific gravity and distillation temperatures, were the input parameters of the model. The training of the network was carried out using the Levenberg– Marquardt backpropagation algorithm and the early stopping technique. A comparison of the statistical parameters of different networks made it possible to determine the optimal number of neurons in the hidden layer with the best weight and bias values. The network containing nine hidden neurons was selected as the best predictive model. The ANN model as well as the Alqaheem–Riazi’s model was evaluated for the prediction of flash points by a statistical analysis based on the calculation of the mean square error, Pearson correlation coefficient, coefficient of determination, absolute percentage errors, and the mean absolute percentage error. The ANN model provided higher prediction accuracy over a wide distillation range than the Alqaheem–Riazi’s model. The developed ANN model is a reliable and fast tool for the low-cost estimation of flash points of petroleum middle distillates.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":null,"pages":null},"PeriodicalIF":1.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142186410","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