Valery I. Savchenko, Alexey V. Ozerskii, Emmanuel Busillo, Alexey V. Nikitin, Igor V. Sedov, Vladimir S. Arutyunov
{"title":"High-Pressure Non-Catalytic Partial Oxidation of Methane","authors":"Valery I. Savchenko, Alexey V. Ozerskii, Emmanuel Busillo, Alexey V. Nikitin, Igor V. Sedov, Vladimir S. Arutyunov","doi":"10.1134/S0965544125601292","DOIUrl":"10.1134/S0965544125601292","url":null,"abstract":"<p>This study presents the results of detailed kinetic modeling for the high-pressure, non-catalytic partial oxidation of natural gas. The findings demonstrate the critical importance of reaction kinetics in determining the actual product distribution, particularly given the extended time required for reach equilibrium under these conditions. The influence of kinetics was evaluated across a pressure range of 1 to 100 bar. Although near-complete O<sub>2</sub> conversion (>99.99%) is achieved very rapidly at high pressures, a significant amount of unreacted methane remains at this point. Attaining high methane conversion in the post-flame zone requires a time frame that is several orders of magnitude longer. This is attributed to the increasing impact of the partial pressure of H<sub>2</sub> produced in this zone, which shifts the equilibrium in the reaction system (2CH<sub>4</sub> ↔ C<sub>2</sub>H<sub>4</sub> + 2H<sub>2</sub> ↔ C<sub>2</sub>H<sub>2</sub> + 3H<sub>2</sub>) to the left. This shift, in turn, reduces both the acetylene content in the gas mixture and its consumption via reaction with OH<sup>•</sup> radicals. Furthermore, an increase in pressure promotes the influence of CO methanation, thereby limiting the maximum achievable CH<sub>4</sub> conversion.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"66 1","pages":"73 - 87"},"PeriodicalIF":1.1,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558837","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}
Lipei Qiu, Sha Wang, Bin Hu, Junyin Wang, Ziru Wang, Tingting Zhang, Cong Shi
{"title":"Study on the Hydrogen Production Characteristics of Sorption-Enhanced Steam Reforming of Shale Gas Using Calcium-Based Adsorbents","authors":"Lipei Qiu, Sha Wang, Bin Hu, Junyin Wang, Ziru Wang, Tingting Zhang, Cong Shi","doi":"10.1134/S0965544125600298","DOIUrl":"10.1134/S0965544125600298","url":null,"abstract":"<p>This study presents a thermodynamic analysis of hydrogen (H<sub>2</sub>) production via shale gas steam reforming (SG-SR) and shale gas sorption-enhanced steam reforming (SG-SESR). The analysis was performed using HSC Chemistry software based on the principle of Gibbs free energy minimization. First, the influence of key operating parameters, such as the steam-to-carbon molar ratio (S/C), temperature, and pressure, on the H<sub>2</sub> yield and concentration, carbon-containing gas concentration, and carbon deposition during the SG-SR process was investigated. The results showed that the optimal reaction conditions were 700°C, 0.10 MPa, and S/C = 4. Under these conditions, the H<sub>2</sub> yield and concentration (on a dry gas basis) were 4.04 mol/mol and 84.05%, respectively. Subsequently, the impact of the CaO-to-carbon molar ratio (CaO/C) on SG-SESR, as well as the synergistic effects of S/C and CaO/C, were explored. The results demonstrated that when the temperature was controlled within 500–600°C with S/C = 6 and CaO/C = 2, the H<sub>2</sub> yield reached 4.30 mol/mol, and the concentration peaked at 99.66%. This thermodynamic analysis of SG-SR and SG-SESR processes not only advances the comprehensive SG utilization and the development of novel clean hydrogen production technologies but also provides theoretical guidance for the practical application of shale gas reforming.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"66 1","pages":"88 - 101"},"PeriodicalIF":1.1,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147558838","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}
{"title":"Research on a Dual-Function DES [C4pyr]Cl/C2H2O4 as a Desulfurization Catalyst and Extractant","authors":"Hongyin Yu, Rongxiang Zhao, Xiuping Li, Liangpei Hou","doi":"10.1134/S0965544124601923","DOIUrl":"10.1134/S0965544124601923","url":null,"abstract":"<p>A deep eutectic solvents (DES) was synthesized by stirring mixture of 1-butyl-pyridinehydrochloride ([C<sub>4</sub>pyr]Cl) and oxalic acid (C<sub>2</sub>H<sub>2</sub>O<sub>4</sub>) at 100°C. The [C<sub>4</sub>pyr]Cl/C<sub>2</sub>H<sub>2</sub>O<sub>4</sub> DES was characterized by FT-IR and <sup>1</sup>H NMR spectroscopy. This DES is capable of extracting thiophene-type sulfides due to the similar polarity of 1-butyl-pyridine and DBT. The –COOH groups within the [C<sub>4</sub>pyr]Cl/C<sub>2</sub>H<sub>2</sub>O<sub>4</sub> DES are readily oxidized to ‒COOOH by H<sub>2</sub>O<sub>2</sub>, which susequently catalyzes the thiophene oxidation into sulfone in the model oil. The higher polarity of sulfone compared to that of thiophone enhances their solubility in the solvent. When the V(DES)/V(model oil) = 0.2, <i>T</i> = 50°C, and O/S = 6, the DBT removal rate reached 98.6% within 80 min. The catalytic activity of [C<sub>4</sub>pyr]Cl/C<sub>2</sub>H<sub>2</sub>O<sub>4</sub> exhibited only a slight decrease after nine regeneration cycles. The apparent activation energy for DBT removal using [C<sub>4</sub>pyr]Cl/C<sub>2</sub>H<sub>2</sub>O<sub>4</sub> was 33.3 kJ/mol. Experimental results indicate that the low apparent activation energy contributes to the high desulfurization efficiency.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"66 1","pages":"49 - 56"},"PeriodicalIF":1.1,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560860","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}
Anastasiia P. Dubtsova, Egor P. Andriako, Tatiana O. Bok, Olga A. Ponomareva, Irina I. Ivanova
{"title":"Seed-Assisted Synthesis of Mordenite and Its Physicochemical and Catalytic Properties in Toluene Disproportionation","authors":"Anastasiia P. Dubtsova, Egor P. Andriako, Tatiana O. Bok, Olga A. Ponomareva, Irina I. Ivanova","doi":"10.1134/S0965544125602054","DOIUrl":"10.1134/S0965544125602054","url":null,"abstract":"<p>A series of MOR-type zeolites with a Si/Al ratio of ~5 were synthesized via seed-assisted hydrothermal crystallization. Their physicochemical properties were characterized by low-temperature nitrogen adsorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray fluorescence spectrometry (XRF), and infrared spectroscopy of adsorbed pyridine (FTIR-Py). Their catalytic performance was tested in gas-phase toluene disproportionation. At a seed content of 10 wt % in the reaction mixture, the synthesized material exhibited the highest concentration of accessible Brønsted acid sites and the greatest catalytic activity.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"66 5","pages":"556 - 562"},"PeriodicalIF":1.1,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695181","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}
Alexey G. Dedov, Alexey S. Loktev, Malika N. Vagapova, Alexey A. Sadovnikov, Kirill A. Cherednichenko
{"title":"Novel Catalysts Based on Nanosized ZSM-5 and Silicon Carbide for Converting Rapeseed Oil to “Green” Hydrocarbons","authors":"Alexey G. Dedov, Alexey S. Loktev, Malika N. Vagapova, Alexey A. Sadovnikov, Kirill A. Cherednichenko","doi":"10.1134/S0965544125601486","DOIUrl":"10.1134/S0965544125601486","url":null,"abstract":"<p>A nanosized ZSM-5 zeolite and a novel material composed of ZSM-5 nanoparticles and silicon carbide were synthesized directly in the proton form via a microwave-assisted hydrothermal method and tested for the first time as catalysts for rapeseed oil conversion. Both catalysts achieved 100% conversion of rapeseed oil to C<sub>2</sub>–C<sub>4</sub> olefins and aromatic hydrocarbons, which are applicable as “green” components of fuels and intermediates for petrochemical synthesis. The results demonstrate that the composite of silicon carbide and nanosized ZSM-5 modifies the catalytic performance in rapeseed oil conversion.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"66 1","pages":"1 - 13"},"PeriodicalIF":1.1,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S0965544125601486.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147560404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexey G. Dedov, Maya V. Kulikova, Alexey S. Loktev, Alla Yu. Krylova, Albert B. Kulikov, Kristina O. Krysanova, Mark A. Manzhikov
{"title":"Novel Catalysts for Producing “Green” Intermediates for Petrochemical Synthesis from Wood Waste","authors":"Alexey G. Dedov, Maya V. Kulikova, Alexey S. Loktev, Alla Yu. Krylova, Albert B. Kulikov, Kristina O. Krysanova, Mark A. Manzhikov","doi":"10.1134/S0965544125601334","DOIUrl":"10.1134/S0965544125601334","url":null,"abstract":"<p>Co- and Ni-based catalysts derived from aluminum–magnesium hydrotalcites were investigated for the hydrogenation of carbon-rich (up to 66 wt %) biochars prepared by the hydrothermal carbonization of biomass. The biochar was liquefied at 375°C using molecular H<sub>2</sub> generated from tetralin and/or externally supplied molecular H<sub>2</sub> <i>in situ</i>. In all cases, feedstock conversion exceeded 90%. A liquid product yield of 77 wt % was achieved with the Co-based catalyst.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"66 1","pages":"65 - 72"},"PeriodicalIF":1.1,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559259","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}
Jasim I. Humadi, Qahtan A. Mahmood, Amer T. Nawaf, Mohamed A. Habila, Ali A. Hassan, Rajesh Haldhar
{"title":"Eco-Friendly Reduction of Graphene Oxide-Co3O4 from Waste Material for Rapid Oxidative Desulfurization of Sulfur Compounds Using a Digital Baffle Batch Reactor: Production of Clean Fuel","authors":"Jasim I. Humadi, Qahtan A. Mahmood, Amer T. Nawaf, Mohamed A. Habila, Ali A. Hassan, Rajesh Haldhar","doi":"10.1134/S0965544124602850","DOIUrl":"10.1134/S0965544124602850","url":null,"abstract":"<p>The primary objective of this study was reduction of waste materials and their convertation into valuable resources. The secondary objective was to utilize the produced materials for elimination air pollutants. Herein, a novel nanocatalyst, cobalt oxide (Co<sub>3</sub>O<sub>4</sub>) supported on reduced graphene oxide (rGO), was synthesized via an impregnation technology and employed for the oxidative desulfurization (ODS) of heavy naphtha in a Digital Baffle Batch Reactor (DBBR). The rGO nano-support was prepared from waste material through a catalytic reaction. The developed (Co<sub>3</sub>O<sub>4</sub>/rGO) nanocatalyst exhibited outstanding catalytic efficiency attributed to its effective impregnation, favorable pore size distribution, high activity, and large surface area, as confirmed by FESEM, EDX, XRD and BET analyses. The efficacy of the prepared nanocatalyst, combined with novel oxidant, performic acid, produced <i>in situ</i> from acetic acid and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>), was assessed in the DBBR under various ODS conditions, including reaction times (15, 25, and 35 min), impeller speeds (140, 200, and 260 rpm), and catalyst amounts (0.4, 0.8, and 1.2 g). The experimental results indicated that increasing the oxidation time, impeller speed, and catalyst amount enhanced desulfurization of the oil feedstock, yielding a cleaner fuel. Under optimal conditions (35 min reaction time, 260 rpm impeller speed, and 0.8 g of modified nanocatalyst), a sulfur conversion efficiency of 93.63% was achieved. The developed DBBR design demonstrated a high sulfur removal in only 35 min, a significant improvement compared to previous studies that required longer reaction times for similar or lower efficiencies.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"66 1","pages":"112 - 126"},"PeriodicalIF":1.1,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559246","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}
A. A. Chemes, G. B. Narochnyi, I. N. Zubkov, D. A. Ponomarev, M. A. Zubkova, A. P. Savost’yanov, R. E. Yakovenko
{"title":"Silica-Gel-Supported Cobalt Catalysts for the Selective Synthesis of Long-Chain Hydrocarbons (C19+)","authors":"A. A. Chemes, G. B. Narochnyi, I. N. Zubkov, D. A. Ponomarev, M. A. Zubkova, A. P. Savost’yanov, R. E. Yakovenko","doi":"10.1134/S0965544125600195","DOIUrl":"10.1134/S0965544125600195","url":null,"abstract":"<p>This study investigates a silica-gel-supported cobalt catalyst for synthesizing long-chain hydrocarbons (C<sub>19+</sub>) from CO and H<sub>2</sub>. The process conditions were varied within the following ranges: pressure, 1.5–3.5 MPa; gas hourly space velocity (GHSV), 300–830 h<sup>–1</sup>; H<sub>2</sub>/CO ratio, 2.0–2.3; and temperature, 187–213°C. Catalytic testing revealed a correlation between the catalyst deactivation rate and the content of C<sub>19+</sub> hydrocarbons in the products. When the C<sub>19+</sub> content increased from approximately 40 to 55 wt %, the deactivation rate increased more than tenfold. Under optimized conditions (H<sub>2</sub>/CO = 2.3, <i>P</i> = 2.0 MPa, <i>T</i> = 193°C), the C<sub>19+</sub> content reached ~46–50 wt %, and the deactivation rate was minimized. A long-term stability test over 500 h was used to project a catalyst cycle length, which was found to be at least 4000 h. The study results provide a foundation for optimizing Fischer–Tropsch process conditions to maximize catalyst lifetime and selectivity toward heavy hydrocarbons, supporting the recommendation of the proposed catalyst for industrial implementation.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 11","pages":"1305 - 1316"},"PeriodicalIF":1.1,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336557","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}
E. A. Grushevenko, M. V. Magomedova, T. N. Rokhmanka, A. D. Cherepanova, G. S. Golubev, G. I. Konstantinov, I. L. Borisov, K. I. Dement’ev
{"title":"Potential of Membrane-Based Separation Methods for Producing Low-Carbon Petrochemicals and Renewable Jet Fuels from ABE Fermentation Products (A Review)","authors":"E. A. Grushevenko, M. V. Magomedova, T. N. Rokhmanka, A. D. Cherepanova, G. S. Golubev, G. I. Konstantinov, I. L. Borisov, K. I. Dement’ev","doi":"10.1134/S0965544125601760","DOIUrl":"10.1134/S0965544125601760","url":null,"abstract":"<p>This review analyzes existing strategies for intensifying bioalcohol production <i>via</i> acetone–butanol–ethanol (ABE) fermentation focusing on the use of membrane concentration techniques. It also discusses the potential applications of the resulting concentrates as feedstocks for low-carbon fuels and petrochemicals. The review comprises three parts: (1) the current state of ABE fermentation technology, including its fundamental principles as they relate to biomass type; (2) membrane-based separation techniques for concentrating target fermentation products, with a primary focus on pervaporation and promising membrane types and materials; and (3) the downstream processing of ABE concentrates into high-value-added petrochemicals.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 11","pages":"1245 - 1279"},"PeriodicalIF":1.1,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336556","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}
V. I. Savchenko, A. V. Ozerskii, E. Busillo, A. V. Nikitin, I. V. Sedov, V. S. Arutyunov
{"title":"Effects of Pressure on the Non-Catalytic Thermal Conversion of Methane in Various Gases","authors":"V. I. Savchenko, A. V. Ozerskii, E. Busillo, A. V. Nikitin, I. V. Sedov, V. S. Arutyunov","doi":"10.1134/S0965544125601127","DOIUrl":"10.1134/S0965544125601127","url":null,"abstract":"<p>A detailed kinetic model based on the NUI Galway mechanism for light hydrocarbon oxidation was used to investigate the effects of pressure on the non-catalytic conversion of methane in various gas atmospheres (Ar, H<sub>2</sub>, CO, CO<sub>2</sub>, H<sub>2</sub>O). The study also evaluated the impact of H<sub>2</sub>O addition on the conversion of CH<sub>4</sub> in mixtures with H<sub>2</sub> and CO. For CH<sub>4</sub> mixed with Ar, CO, or H<sub>2</sub>, the methane pyrolysis rate exhibits a power-law dependence on pressure (<i>W</i> = <i>AP</i><sup><i>n</i></sup>), with the exponent <i>n</i> ranging from ~0.4 to ~0.65 in the 1400–1800 K temperature range. The achievable CH<sub>4</sub> conversion decreases significantly with rising pressure, particularly for CH<sub>4</sub>–H<sub>2</sub> mixtures. For the non-catalytic conversion of CH<sub>4</sub> in mixtures with H<sub>2</sub>O and CO<sub>2</sub>, the initial pyrolysis rate is similar to that in an argon atmosphere. At high pressures, however, the CH<sub>4</sub> concentration profile subsequently passes through a rising region. This is attributed to the interaction of C<sub>2</sub>H<sub>2</sub> and CO products with H<sub>2</sub>O, which generates additional H<sub>2</sub> and consequently shifts the equilibrium of the reaction system (2CH<sub>4</sub> ↔ C<sub>2</sub>H<sub>4</sub> + 2H<sub>2</sub> ↔ C<sub>2</sub>H<sub>2</sub> + H<sub>2</sub>) to the left.</p>","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"65 11","pages":"1317 - 1328"},"PeriodicalIF":1.1,"publicationDate":"2026-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340235","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}