Article
Engineering, Environmental
Jucai Wei, Du Yuan, Xu Wu
Summary: The direct electrosynthesis of hydrogen peroxide from the air is a promising alternative to the energy-intensive anthraquinone process. However, current methods suffer from low productivity and high energy consumption. In this study, a continuous flow sulfite/air fuel cell with a sulfite depolarized anode is proposed as a direct synthesis strategy. By optimizing catalysts and cell parameters, the prototype cell achieved high selectivity and productivity, with low energy consumption. The desulfurization solution from the flue gas desulfurization process is applied as the anolyte, further enhancing hydrogen peroxide synthesis and recovering sulfur as fertilizer.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Zachariah Steven Baird, Heino Rang, Vahur Oja
Summary: The review summarizes research on removing sulfur, nitrogen and oxygen from shale oil, highlighting the main obstacle of heteroatoms content and the most widely investigated method being hydrotreatment.
Article
Energy & Fuels
Y. Zhou, Z. G. Xu, Z. H. Wu
Summary: This study investigates the formation mechanism of hydrogen sulfide during the pyrolysis process of Chang 7 type-II oil shale kerogen. XPS spectra were obtained to analyze the forms of hybrid atoms, and the pyrolysis characteristics were studied using ReaxFF. The sulfur element in the kerogen was mainly in the form of organic sulfur, and the desulfurization rate increased with higher pyrolysis temperatures. Hydrogen sulfide production was influenced by various sulfur-containing functional groups.
Article
Chemistry, Physical
Hanxiang Chen, Shuting Hou, Haoyuan Cui, Chao Wang, Ming Zhang, Hongping Li, Hui Xu, Jiqing Wu, Wenshuai Zhu
Summary: The interfacial properties and active site distribution of catalysts have a significant impact on catalytic oxidative desulfurization activity, which has been a research focus in recent years. In this study, an amphiphilic and polyoxometalate poly(ionic liquids) were prepared through cross-linking copolymerization and ion exchange reaction for desulfurization in fuel. The resulting sample, p-C2VIM-DVB-2-PMo, exhibited enhanced desulfurization performance and good thermal stability, meeting the requirements for deep desulfurization. Density functional theory calculations were also utilized to investigate the adsorption strength and interaction nature between the cation and sulfide compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Asmaa A. Abdelrahman, Doaa I. Osman, Abdelrahman M. Rabie, Heba M. Salem
Summary: A novel BiVO4/FeMn layered double hydroxide (LDH) nanocomposite was fabricated and applied for green and efficient ultrasound-assisted oxidative desulfurization (UAODS) of real fuel. The physicochemical properties of the nanocomposite were characterized using various techniques. The results showed that the nanocomposite exhibited remarkable desulfurization performance under optimized reaction conditions, and the catalyst demonstrated high stability and reusability.
DALTON TRANSACTIONS
(2023)
Article
Engineering, Environmental
Wenshi Liu, Yu Liu, Ying Xiong, Xiao Xiao, Chunyan Liu, Bo Yuan, Xunchi Pu
Summary: The aim of this study was to find effective and environmentally friendly methods for removing organic matter from shale gas flowback water (SGFW). Fe(VI) was found to remove 57% of the chemical oxygen demand (COD) under optimal conditions. Hydroxyl radicals (center dot OH) were identified as the main reactive species responsible for oxidation.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Engineering, Chemical
Dinara Muktaly, Argam Akopyan, Zhannur Myltykbaeva, Yerzhan Imanbayev
Summary: This study presents the results of the oxidative desulfurization process, which demonstrates the possibility of obtaining a gasoline fraction with ultra-low sulfur content through oxidation and rectification of gas condensate. Optimum conditions for sulfur compound oxidation and subsequent gas condensate rectification have been determined.
Article
Materials Science, Multidisciplinary
Kunyue Leng, Zheng Han, Dingding Li, Xiaolin Li, Yi Wang, Hang Zhao
Summary: Ti-containing porous materials are extensively studied for liquid-phase oxidative desulfurization, showing excellent performance with organic oxidants but relatively poor affinity with H2O2. However, a Ti-MIL-101 catalyst was developed to improve efficiency in oxidative reactions with H2O2, reducing sulfur content and increasing TOF value.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Engineering, Chemical
Jiaxin Tian, Zifei Yan, Jian Deng, Guangsheng Luo
Summary: A novel homogeneous oxidation method utilizing hydrogen peroxide catalyzed by phosphotungstic acid has been developed for the synthesis of high-quality 2,2'-dibenzothiazole disulfide (MBTS). This method improves reaction efficiency and product quality, solves organic wastewater treatment issues, achieves high purity product synthesis, and successfully recycles the mother liquor containing catalyst.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Zhiguo Zhu, Hongying Lu, Ming Zhang, Hengquan Yang
Summary: This review focuses on the physicochemical properties of deep eutectic solvents (DESs) and their applications in desulfurization processes, with particular emphasis on recent advances in selective aerobic oxidation desulfurization (AODS) and the biomimetic approach coupling DESs with polyoxometallates (POMs). The strategy of combining DESs as multifunctional agents with POMs as electron transfer mediators offers a novel path for oxidation catalysis, overcoming challenges such as O-2 activation. The potential applications and future opportunities of DESs in catalysis science are also discussed.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Biotechnology & Applied Microbiology
Komal Desai, Swapnil Dharaskar, Jalaja Pandya, Satyam Shinde
Summary: A phosphonium-based ionic liquid was used as a catalyst/extractant for desulfurization of model oil and base oil, achieving a maximum sulfur removal rate of 98.67% under ultrasound-assisted oxidative desulfurization. The PIL was regenerated and recycled multiple times without significant efficiency decrease, demonstrating its potential for industrial application in the desulfurization process.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Energy & Fuels
Dong Yang, Lei Wang, Yangsheng Zhao, Zhiqin Kang
Summary: The technology of oil shale pyrolysis by water vapor injection uses high-temperature steam as a heat carrier to alter the generation characteristics of oil and gas products. Experimental results showed that the injection temperature and time significantly influenced the hydrogen content, gas components, and quality of shale oil products.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Environmental
Jasim I. Humadi, Saba A. Gheni, Safaa M. R. Ahmed, Ghassan H. Abdullah, Anh N. Phan, Adam P. Harvey
Summary: This study developed a highly efficient, rapid oxidative desulfurization (ODS) process for continuous removal of sulfur contaminants in diesel fuels. By optimizing the operating conditions, up to 94% of DBT could be removed in a short amount of time without the need for further extraction.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Geochemistry & Geophysics
J. Kameda, A. Okamoto
Summary: Mechanochemical reactions in crustal fault zones play a crucial role in controlling the chemical environment during seismic events. The production of H2O2 after a slip event may react with Fe-bearing minerals or Fe2+, leading to further oxidative reactions. These chemical processes could influence the interaction between neighboring seismic activities.
GEOCHEMICAL PERSPECTIVES LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Fahimeh Vafaee, Mansour Jahangiri, Masoud Salavati-Niasari
Summary: In this study, an effective nanocatalyst NiFe2O4-PEG was successfully synthesized and applied in ultrasound assisted oxidative desulfurization for the first time. The characterization of the nanocatalyst was conducted using various analytical techniques, and central composite design was utilized to evaluate the effective variables in the UAOD process.
Correction
Chemistry, Organic
D. N. Gorbunov, M. V. Nenasheva, R. P. Matsukevich, M. V. Terenina, Yu. S. Kardasheva, E. A. Karakhanov
PETROLEUM CHEMISTRY
(2021)
Article
Chemistry, Applied
Al. A. Pimerzin, A. V. Vutolkina, N. A. Vinogradov, V. A. Vinokurov, Yu. M. Lvov, A. P. Glotov
Summary: A nanoarchitectural strategy for designing highly active catalysts using CoMoS encased in 50-nm diameter aluminosilicate tubes as a natural support has been proposed. This encapsulation approach protects the active metal sulfides from aggregation, coking, and leaching. Experimental results indicate that the selective loading of molybdenum oxide inside the nanotubes using Mo-heteropolyacid anionic precursor complex leads to the formation of CoMoS particulate core inside the aluminosilicate shell, resulting in a mechanically strong mesoporous catalyst efficient for the hydro treatment of diesel petroleum fraction to clean fuels.
Review
Chemistry, Organic
D. N. Gorbunov, M. V. Nenasheva, M. V. Terenina, Yu. S. Kardasheva, S. V. Kardashev, E. R. Naranov, A. L. Bugaev, A. V. Soldatov, A. L. Maximov, E. A. Karakhanov
Summary: In recent years, there have been intensive research efforts in carbon dioxide reactions due to growing environmental concerns and the need for alternative raw materials in the chemical industry. This review examines previous studies on the production of commercially important compounds using homogeneous catalytic systems containing transition-metal complexes. It provides organized information on reactions of carbon dioxide with hydrogen to produce C-1 chemicals and interactions between carbon dioxide and organics to produce valuable chemical compounds.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Organic
A. V. Akopyan, A. O. Shlenova, P. D. Polikarpova, A. V. Vutolkina
Summary: A new heterogeneous catalyst with two types of active sites has been synthesized and shown to efficiently convert dibenzothiophene under specific conditions. The catalyst is stable under oxidation conditions and retains its activity after multiple cycles.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Organic
M. Terenina, Yu S. Kardasheva, L. A. Kulikov, N. A. Sinikova, E. A. Karakhanov
Summary: Heterogeneous catalysts consisting of rhodium nanoparticles immobilized in mesoporous aromatic frameworks were synthesized and exhibited high catalytic activity and reusability in the hydroformylation reaction.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Physical
A. V. Vutolkina, I. G. Baigildin, A. P. Glotov, Al. A. Pimerzin, A. V. Akopyan, A. L. Maximov, E. A. Karakhanov
Summary: Efficient hydrodeoxygenation of guaiacol via in situ hydrogen generated through Water Gas Shift (WGS) reaction over nanosized unsupported NiMoS catalysts with tunable selectivity toward cyclohexene was reported. The reaction offers a direct reaction route for oxygen-containing compounds from bio-oils depending on catalyst precursors and reaction conditions. The proposed reaction routes and mechanisms for hydrodeoxygenation of guaiacol were also discussed.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Energy & Fuels
Sergey P. Verevkin, Aleksey A. Pimerzin, Aleksandr P. Glotov, Anna V. Vutolkina
Summary: The study investigated the thermodynamic properties of fatty acid methyl esters as a renewable alternative fuel biodiesel, validated through experimental measurements and quantum chemical calculations, and developed group additivity contributions to predict the thermodynamic properties of esters.
Article
Chemistry, Physical
Yulia Kardasheva, Maria Terenina, Daniil Sokolov, Natalia Sinikova, Sergey Kardashev, Eduard Karakhanov
Summary: A new phosphorous-free rhodium catalyst supported on nitrogen-doped silica was developed for the hydroformylation of alkenes. The catalyst and obtained material were thoroughly characterized using various techniques. The catalyst exhibited excellent performance in the hydroformylation of octene-1, achieving high conversions and yields for aldehydes. It also showed good activity for styrene and cyclohexene, and could be used repeatedly without significant loss of activity.
Article
Chemistry, Organic
I. G. Baigildin, E. A. Izergina, M. Yu. Talanova, E. A. Karakhanov, A. L. Maximov, A. V. Vutolkina
Summary: This study investigated the hydrogenation of aromatics using unsupported NiMoS catalysts synthesized in situ. The catalyst was found to be active for the hydrogenation reactions of naphthalene and its derivatives, and the reaction was influenced by temperature, pressure, reaction time, and water gas shift reaction conditions.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Organic
E. A. Roldugina, M. P. Boronoev, I. I. Shakirov, Yu. S. Kardasheva, S. V. Kardashev, A. L. Maximov, E. A. Karakhanov
Summary: The paper investigates the performance of ruthenium and nickel catalysts supported on aluminum-modified SBA-15 mesoporous silicate in aqueous-phase furfural hydrogenation. Increasing the reaction temperature and hydrogen pressure enhances the selectivity towards methyltetrahydrofuran. The ruthenium catalyst shows higher activity than the nickel catalyst under 250°C and 5 MPa H2 conditions.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Physical
Gleb Zasypalov, Anna Vutolkina, Vladimir Klimovsky, Egor Abramov, Vladimir Vinokurov, Aleksandr Glotov
Summary: Halloysite nanotubes (HNTs) show promise as a support material for liquid-phase hydrodeoxygenation (HDO) catalysts. Acid etching can enhance their properties and increase catalytic activity and selectivity.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Organic
L. A. Kulikov, M. A. Bazhenova, Yu. S. Bolnykh, D. A. Makeeva, M. V. Terenina, Yu. S. Kardasheva, A. L. Maximov, E. A. Karakhanov
Summary: This paper investigates the alkylation of guaiacol with isopropanol and cyclohexanol over sulfonated porous aromatic frameworks. The results show that the composition of alkylate is sensitive to the reaction conditions and catalyst structure.
PETROLEUM CHEMISTRY
(2022)
Correction
Chemistry, Organic
A. V. Akopyan, A. O. Shlenova, P. D. Polikarpova, A. V. Vutolkina
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Applied
O. Golubev, H. Zhou, E. A. Karakhanov
Summary: The study found that adsorbents based on MCM-41 mesoporous material exhibit higher adsorption capacity in the reactive adsorption desulfurization of dibenzothiophene compared to alumina-based adsorbents under conditions of 350 degrees C, 2 MPa pressure, and a feed space velocity of 1 h(-1).
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
(2021)
