Article
Chemistry, Multidisciplinary
Lifang Chen, Jin An Wang, Natali de la Fuente, Sinong Zhou, Peng Jiang, Yueqin Song, Xiaolong Zhou
Summary: This study focuses on the roles of structural defects, surface acidity, and catalytic properties of phosphotungstic acid grafted on Zr-doped MCM-41 catalysts in oxidative desulfurization, demonstrating the importance of these factors in improving catalytic activity for ultralow-sulfur fuel production.
NEW JOURNAL OF CHEMISTRY
(2022)
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
Chemistry, Applied
Lei Wang, Daxiang Xie, Yingying Ma, Meng Sun, Nchare Mominou, Weijie Jiang, Chen Shufeng, Chunyu Jing
Summary: This study prepared a photocatalyst with high desulfurization and denitrogenation activities by Er, W, and N co-doping modification of TiO2. Experimental results showed that the desulfurization and denitrogenation ratios were both 100% under suitable conditions. The co-doping of Er, W, and N extended the photo-absorption range and improved the hole-electron separation of TiO2.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Thermodynamics
Mahmut Uyar, Huseyin Aydin
Summary: In this study, a diesel-like fuel was produced from crude oil sludge using catalytic pyrolysis. The fuel went through two stages of desulfurization, resulting in a significant reduction in sulfur content. The obtained fuels were found to be suitable for use in diesel engines without requiring any engine modifications.
Article
Environmental Sciences
Shichun Lin, Sue-Faye Ng, Wee-Jun Ong
Summary: This study analyzed the environmental impacts of the oxidative desulfurization (ODS) process catalyzed by metal-free reduced graphene oxide (rGO) through life cycle assessment (LCA). The results showed that rGO production and ODS process had significant impacts on human health, ecosystem, and resources.
ENVIRONMENTAL POLLUTION
(2021)
Article
Energy & Fuels
Yan Gao, Hailong Li, NaNa Li, Xiaobo Hu, Linyan Feng, Aiping Yin, Jianshe Zhao
Summary: A magnetic hybrid material Fe2O3/C was prepared by pyrolysis of MIL-101 (Fe) in the presence of nitrogen flow and (Bu4N)3PWxMo4-x catalysts were encapsulated into it through impregnation method. The (Bu4N)3PW4@Fe2O3/C catalyst exhibited excellent catalytic activity for the desulfurization of model fuel, showing a DBT removal efficiency of 99.9% within 30 minutes. It also demonstrated good activity for other substrate sulfides and remained stable with a removal efficiency of>90% after 8 cycles.
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
Chemistry, Inorganic & Nuclear
Xiao-Xiao Xing, Hui -Li Guo, Tong Feng, Tian-Meng He, Wen-Shuai Zhu, Hua-Ming Li, Jing-Yu Pang, Yan Bai, Dong-Bin Dang
Summary: In this study, a series of catalysts [Cnmim]5VW12O40Br (CnVW12) with different alkyl chain lengths were used for the catalytic oxidation of dibenzothiophene (DBT) and its derivatives at room temperature. The impact of catalyst amount, oxidant, and temperature on the reaction process were investigated. Among them, C16VW12 exhibited higher catalytic performance, achieving 100% conversion and selectivity in 50 minutes with only 10 mg of catalyst. The mechanism study revealed that the hydroxyl radical played a crucial role in the reaction. Furthermore, the use of a polarity strategy resulted in the accumulation of sulfone products with a yield of approximately 84% and 100% purity after 23 cycles in the C16VW12 system.
INORGANIC CHEMISTRY
(2023)
Article
Engineering, Chemical
Lei Wang, Ning Zuo, Meng Sun, Yingying Ma, Nchare Mominou, Weijie Jiang, Shuzhen Li, Chunyu Jing
Summary: By doping N, CQDs, Ir, and Pr in TiO2, the prepared Ir/Pr-N-CQDs-TiO2 exhibited excellent desulfurization and denitrogenation activity, with much higher turnover frequencies compared to other catalysts, and desulfurization and denitrogenation ratios reaching very high levels.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
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
Green & Sustainable Science & Technology
Yulin Zhang, Guozhao Ji, Fahim Ullah, Aimin Li
Summary: The study focuses on the sulfur removal from tire pyrolysis oil (TPO) by distillation and oxidation desulfurization process (ODS). A fraction of TPO with boiling point range of 190-350 °C, designated as TPO190-350 °C, was obtained by distillation. The sulfides in TPO190-350 °C were mainly benzothiophene derivatives. A POM-based catalyst was used in the ODS process to remove sulfur compounds from the oil, and it showed excellent catalytic performance and recyclability. The desulfurization efficiency of TPO190-350 °C was achieved up to 91.28%, reducing the initial sulfur contents from 11033 ppm to 961 ppm.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Martha A. Arellano-Trevin, Teresa L. Alleman, Rebecca Brim, Anh T. To, Junqing Zhu, Charles S. McEnally, Cameron Hays, Jon Luecke, Lisa D. Pfefferle, Thomas D. Foust, Daniel A. Ruddy
Summary: Methyl-terminated polyoxymethylene ethers (MM-POMEs) are oxygenates with desirable diesel-like fuel properties. However, their low energy density and high water-solubility have limited their adoption. By synthesizing a mixture called B*POME1-6, which maintained the advantageous properties of MM-POMEs and had improved energy density and reduced water solubility, these concerns were addressed. The B*POME1-6 blend with a base diesel fuel showed improved oxidation stability, cetane number, sooting tendency, lubricity, and conductivity, while meeting other requirements. Evaluation of the component molecules of B*POME1-6 suggested that they have a greater tendency to partition into water but with a lower tendency to bioaccumulate compared to a common diesel surrogate.
Article
Thermodynamics
Jizhen Zhu, Jing Li, Sixu Wang, Mohsin Raza, Yong Qian, Yuan Feng, Liang Yu, Yebing Mao, Xingcai Lu
Summary: The study explores the ignition delay time measurements of methane/diesel mixtures with varying diesel substitution ratios, showing typical two-stage autoignition characteristics and a crossover of IDTs at high temperature. Diesel has a non-linear promoting effect on IDTs, while competition between methane and diesel for OH radicals inhibits the consumption of diesel and promotes the depletion of methane.
COMBUSTION AND FLAME
(2021)
Article
Biochemistry & Molecular Biology
Dora Lakk-Bogath, Patrik Torok, Flora Viktoria Csendes, Soma Keszei, Beatrix Gantner, Jozsef Kaizer
Summary: The study demonstrates that a nonheme diiron-peroxo complex exhibits catalase-like activity and displays properties related to iron redox states. By investigating nonheme structural and functional models, a potential catalytic cycle mechanism was proposed.
Article
Energy & Fuels
Guojia Yu, Xiaojia Wu, Lu Wei, Zhiyong Zhou, Wei Liu, Fan Zhang, Yixin Qu, Zhongqi Ren
Summary: Ionic liquids (ILs) are efficient green solvents for thiophene sulfides removal. In this study, several acidic ILs were synthesized and [NFM][TFA] showed excellent desulfurization efficiency. Through a proposed mechanism, [NFM][TFA] reacted with H2O2 to oxidize DBT in IL phase to corresponding sulfones.
Article
Chemistry, Physical
Ekaterina Y. Chernikova, Daria Berdnikova, Alexander S. Peregudov, Olga A. Fedorova, Yuri Fedorov
Article
Chemistry, Multidisciplinary
Maria A. Ustimova, Polina A. Chernikova, Nikolai E. Shepel, Yury V. Fedorov, Olga A. Fedorova
MENDELEEV COMMUNICATIONS
(2020)
Review
Chemistry, Multidisciplinary
Igor S. Antipin, Mikhail Alfimov, Vladimir V. Arslanov, Vladimir A. Burilov, Sergey Z. Vatsadze, Yan Z. Voloshin, Konstantin P. Volcho, Valery V. Gorbatchuk, Yulia G. Gorbunova, Sergey P. Gromov, Semyon Dudkin, Sergei Yu Zaitsev, Lucia Ya Zakharova, Marat A. Ziganshin, Anna Zolotukhina, Maria A. Kalinina, Eduard A. Karakhanov, Ruslan R. Kashapov, Oskar Koifman, Alexander Konovalov, Vladimir S. Korenev, Anton L. Maksimov, Nugzar Zh Mamardashvili, Galina MMamardashvili, Alexander G. Martynov, Asiya R. Mustafina, Ramil Nugmanov, Alexander S. Ovsyannikov, Pavel L. Padnya, Andrei S. Potapov, Sofiya L. Selektor, Maxim N. Sokolov, Svetlana E. Solovieva, Ivan I. Stoikov, Pavel A. Stuzhin, Evgenii Suslov, Evgeny N. Ushakov, Vladimir P. Fedin, Svetlana Fedorenko, Olga A. Fedorova, Yury Fedorov, Sergei N. Chvalun, Asian Yu Tsivadze, Sergei N. Shtykov, Dmitriy N. Shurpik, Maxim A. Shcherbina, Luidmila S. Yakimova
Summary: Interest in functional supramolecular systems is rapidly growing, with a need for systematization of structural trends and practical properties. Russian institutes and universities have actively explored topics related to these systems, with a bibliography of 1714 references.
RUSSIAN CHEMICAL REVIEWS
(2021)
Article
Chemistry, Inorganic & Nuclear
Bayirta V. Egorova, Taisia P. Kalmykova, Anastasia D. Zubenko, Anna A. Shchukina, Valentina A. Karnoukhova, Daria V. Likhosherstova, Anna B. Priselkova, Yuri V. Fedorov, Olga A. Fedorova, Stepan N. Kalmykov
Summary: The study synthesized and investigated relative acyclic and macrocyclic polyamines as potential chelators for copper radiopharmaceuticals, finding that linear chelators have higher stability constants compared to macrocyclic ones, and both types of ligands have multiple donor sites. Crystal structures showed that metal cations primarily coordinate with aminogroups and picolinates donor atoms, and the coordinating position of macrocyclic ligands is outside the macrocyclic cavity.
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Analytical
Abulkosim Nasriddinov, Sergey Tokarev, Olga Fedorova, Ivan Bozhev, Marina Rumyantseva
Summary: In this study, organic-inorganic hybrid materials based on nanocrystalline indium oxide and ruthenium (II) heteroleptic complexes were developed for room temperature light-activated NO2 detection. The microstructure of indium oxide was found to influence the sensor characteristics and the kinetics of photoconductivity of the hybrid materials. The use of a Ru (II) heteroleptic complex as a photosensitizer enabled the hybrids to have sensitivity in the low energy region of the spectrum and be activated by a low power LED.
Article
Materials Science, Multidisciplinary
A. V. Khoroshutin, D. A. Lypenko, A. A. Korlyukov, A. E. Aleksandrov, P. A. Buikin, A. A. Moiseeva, A. Botezatu, S. D. Tokarev, A. R. Tameev, O. A. Fedorova
Summary: A series of tricyclic naphthothiophenes - photocyclization products were studied and their HOMO and LUMO levels, as well as charge carrier mobility, were evaluated. The 8-methoxynaphtho[1,2b]thiophene showed high charge carrier mobility, which is believed to be associated with the ordering of the high conductivity axis of the microcrystals in the layers.
Article
Chemistry, Analytical
Pavel A. Panchenko, Anastasija Efremenko, Anna S. Polyakova, Alexey Feofanov, Maria A. Ustimova, Yuri Fedorov, Olga A. Fedorova
Summary: In this study, a Dyad compound NI-SP with 1,8-naphthalimide (NI) and styrylpyridine (SP) photoactive units was evaluated as a ratiometric fluorescent chemosensor for mercury (II) ions in living cells. The compound selectively responds to the presence of Hg2+ by enhancing the emission intensity of NI while the fluorescence of SP remains virtually unchanged. This allows for self-calibration of the optical response. The compound shows potential for the detection and quantitative analysis of intracellular Hg2+ ions.
Article
Chemistry, Inorganic & Nuclear
Sofia Khabirova, Gleb Aleshin, Evgeny Anokhin, Anna Shchukina, Anastasia Zubenko, Olga Fedorova, Aleksey Averin, Lev Trusov, Stepan Kalmykov
Summary: In this article, the first modification of nanoparticles with ligands for combined radiopharmaceuticals is reported. Nanoparticles with suitable magnetic properties can be used for both diagnostics and therapy, including magneto-mechanical therapy that is insufficiently studied. Strontium hexaferrite is a hard-magnetic material that can form stable biocompatible colloidal solutions. The nanoparticles were modified with a coupling agent and covalently linked to azacrown ether derivatives, and then radiolabeled with Bi-207. In vitro experiments showed that the complex is stable enough to be a potential theranostic radiopharmaceutical.
DALTON TRANSACTIONS
(2023)
Article
Spectroscopy
Polina S. Perevozchikova, Ekaterina Y. Chernikova, Nikolai E. Shepel, Olga A. Fedorova, Yuri V. Fedorov
Summary: Novel conjugates consisting of 4-styrylpyridinium dye and 2,2-diphenyl-2H-chromene moiety were synthesized and their interaction with double stranded DNA and cucurbit[7]uril was investigated. The compounds were found to form supramolecular assemblies with the macromolecules through suitable binding sites, which were confirmed by various spectroscopic and mass spectrometric techniques.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Ekaterina V. V. Matazova, Bayirta V. V. Egorova, Anastasia D. D. Zubenko, Anna V. V. Pashanova, Olga A. A. Fedorova, Stepan N. N. Kalmykov
Summary: This research determined the stability constants and kinetic properties of Bi3+ complexes with the benzoazacrown ligand H(4)BATA and H(4)DOTA ligand. The FISRE method was used to study the highly stable complexes at low pH values, allowing for the true equilibrium with the free cation forms in the solution. The H(4)BATA ligand showed high stability constants and is suitable for use in bismuth-based radiopharmaceuticals.
Article
Chemistry, Analytical
Marina A. Pavlova, Pavel A. Panchenko, Ekaterina A. Alekhina, Anastasia A. Ignatova, Anna D. Plyutinskaya, Andrey A. Pankratov, Dmitriy A. Pritmov, Mikhail A. Grin, Alexey V. Feofanov, Olga A. Fedorova
Summary: In this study, we report a new conjugate BChl-S-S-NI that can be cleaved into individual functional fragments by the intracellular enzyme glutathione (GSH). The conjugate exhibits efficient energy transfer and fluorescence recovery in solution. The photoinduced activity and imaging properties of the conjugate were investigated with promising results.
Article
Chemistry, Physical
Ekaterina Y. Y. Chernikova, Polina S. S. Perevozchikova, Nikolai E. E. Shepel, Olga A. A. Fedorova, Yuri V. V. Fedorov
Summary: A series of 2,2-diphenyl-2H-chromene derivatives with electron-donating groups on the benzopyran ring have been synthesized. The study found the significant effect of bromoalkoxy chain length and chromene concentration on the conversion of closed form into open form under UV irradiation. The proposed scheme of the ring-opening reaction was confirmed by NMR analysis, providing insights into the nature of photochromic reactions.
Article
Chemistry, Multidisciplinary
M. A. Pavlova, P. A. Panchenko, M. N. Vlasova, O. A. Fedorova
Summary: This article describes the synthesis and characterization of a previously unknown fluorescent sensor for zinc cations, which demonstrates fluorescence enhancement upon complexation with Zn2+ due to the formation of ligand-metal complexes with a composition of 1:1.
RUSSIAN CHEMICAL BULLETIN
(2023)
Article
Chemistry, Physical
Sergey Tokarev, Marina Rumyantseva, Abulkosim Nasriddinov, Alexander Gaskov, Anna Moiseeva, Yuri Fedorov, Olga Fedorova, Gediminas Jonusauskas
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Chemistry, Organic
Ekaterina Y. Chernikova, Anna Y. Ruleva, Vladimir B. Tsvetkov, Yuri Fedorov, Valentin V. Novikov, Tseimur M. Atiyeu, Alexander A. Pavlov, Nikolay E. Shepel, Olga A. Fedorova
ORGANIC & BIOMOLECULAR CHEMISTRY
(2020)
