Article
Energy & Fuels
Vijayakumar Gunasekaran, Yuvakkumar Rathinam, Ravi Ganesan, Harichandran Gurusamy
Summary: Jet-fuel range hydrocarbons were selectively produced from biomass-derived cyclic ketones using vapor phase hydrodeoxygenation. The use of Ru-Ni2P/Al-(10)-KIT-6 catalyst under optimal reaction conditions resulted in the highest selectivity and conversion.
Article
Chemistry, Multidisciplinary
Xing Liu, Shaoqing Guo, Haitao Cui, Zhenrong Li, Zhenhui Liang, Xin Li, Jiantao Zhao, Lijing Yuan, Liangfu Zhao
Summary: In this study, a meso/microporous composite material KB was successfully synthesized by an in situ assembly method, and corresponding NiW/KB-3 catalysts were prepared for quinoline hydrodenitrification (HDN) reactions. The results showed that KB-3 displayed the highest HDN activity among all the catalysts, attributed to its open channel structure, excellent textural properties, suitable acidity, and good dispersion of active species, indicating the potential application of KB-3 in HDN reactions.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Energy & Fuels
Zegang Qiu, Shaobo Ma, Zenghui Zhang, Zhiqin Li, Liang Ding, Liangfu Zhao
Summary: NiW/USY-gamma-Al2O3 catalysts modified with P, Zr, and Mn were prepared. The addition of P and Mn enhanced the hydrocracking activity, while the addition of Zr decreased it.
INTERNATIONAL JOURNAL OF OIL GAS AND COAL TECHNOLOGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Chen Hao, Ren Shi-Biao, Zhang Ping, Wang Zhi-Cai, Lei Zhi-Ping, Kang Shi-Gang, Pang Chun-Xiu, Yan Jing-Chong, Li Zhan-Ku, Shui Heng-Fu
Summary: Ni/MCM-41 catalysts were prepared using a solvent-free mechanical grinding method, and Ni/MCM-41(CA) catalyst was also prepared by adding citric acid during the preparation process. The addition of citric acid greatly improved the dispersion of metallic nickel in the catalyst and enhanced the naphthalene hydrogenation performance. The mechanism behind this enhancement was attributed to the formation of nickel citrate during the preparation process.
CHINESE JOURNAL OF INORGANIC CHEMISTRY
(2021)
Article
Energy & Fuels
A. A. Botin, A. Mozhaev, R. E. Boldushevskii, Yu A. Khamzin, P. A. Nikulshin
Summary: This study demonstrates the advantages of the reactive adsorption process for ultra-deep desulfurization of gasoline from catalytic cracking and other hydrocarbon fractions. A series of Ni/ZnO-Al2O3 adsorption-catalytic systems with varying nickel contents were synthesized to investigate the effect of surface concentration of nickel on the activity and selectivity of the reactive adsorption process. The results show that the conversion of thiophene is increased with higher surface concentration of nickel, but the highest selectivity factor for hydrodesulfurization/hydrogenation is achieved at a lower surface concentration of nickel.
CHEMISTRY AND TECHNOLOGY OF FUELS AND OILS
(2022)
Article
Chemistry, Organic
A. A. Botin, A. V. Mozhaev, Yu. A. Khamzin, R. E. Boldushevskii, P. A. Nikulshin
Summary: Several adsorption-catalytic systems with different composition and support preparation methods have been synthesized and studied. It has been found that the Ni/ZnO@Al2O3 adsorption-catalytic system can achieve high desulfurization depth under specific conditions.
PETROLEUM CHEMISTRY
(2022)
Article
Chemistry, Physical
Igor Yu. Kaplin, Ekaterina S. Lokteva, Konstantin I. Maslakov, Artem V. Tikhonov, Andrey N. Kharlanov, Alexander V. Fionov, Alexey O. Kamaev, Oksana Ya. Isaikina, Sergey V. Maksimov, Elena V. Golubina
Summary: This study focused on the synthesis and characterization of mesoporous CeO2-SiO2 catalysts with different Ce:Si ratios, as well as the addition of copper for modification, to understand their effects on CO-PROX reactions. The catalyst with an equimolar Ce:Si ratio showed better catalytic performance, while CuOx/CeSiO (Ce:Si=4:1) exhibited superior low-temperature activity, CO2 selectivity, and stability due to its unique structure and properties.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Alexander N. Ulyanov, Evgeniya V. Suslova, Konstantin I. Maslakov, Pramod K. Singh, Serguei V. Savilov
Summary: This study investigated the local electronic structure of carbon nanotubes (CNTs) consolidated by spark plasma sintering and further oxidized by nitric acid. It was found that oxidation increased the oxygen content, perforated the CNTs, and increased the number of paramagnetic centers. The absorption EPR spectra showed two components with different g-factors, indicating different surroundings of the paramagnetic centers. These findings are important for understanding the oxidation mechanism of nanotubes and developing new materials.
FUNCTIONAL MATERIALS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Alexander N. Ulyanov, Konstantin I. Maslakov, Serguei Savilov, Hui Xia, Sergey M. Aldoshin
Summary: The chemical composition change of oxidized nitrogen-doped graphene nanoflakes (N-GNFox) due to aging, thermal and oxygen treatment is studied for the first time using electron paramagnetic resonance (EPR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The results show that aging increases oxygen content and decreases carbon content, affecting the dispersion of atoms around the centers.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Daria-Maria V. Ratova, Ivan V. Mikheev, Grigoryi R. Chermashentsev, Konstantin I. Maslakov, Sergei Yu. Kottsov, Dmitrii N. Stolbov, Sergey V. Maksimov, Madina M. Sozarukova, Elena V. Proskurnina, Mikhail A. Proskurnin
Summary: This paper proposes a fast method for preparing aqueous graphene oxide dispersions by electrochemical oxidation of a graphite anode without preliminary intercalation with oxidizing agents. Ultrasonic probing in the modulation mode of ultrasonic waves (work/rest) was used for more efficient graphite oxidation-exfoliation. It is shown that the 4/2 s mode of ultrasonic modulation is the most effective in terms of probe material's low corrosion, maintaining optimum synthesis temperature, and achieving the best characteristics of the resulting product.
Article
Chemistry, Physical
Tatiana N. Rostovshchikova, Marina I. Shilina, Konstantin I. Maslakov, Sergey A. Gurevich, Denis A. Yavsin, Grigory B. Veselov, Vladimir O. Stoyanovskii, Aleksey A. Vedyagin
Summary: In this study, Pd particles were deposited on the surface of ZSM-5 zeolite grains using laser electrodispersion to obtain Pd/ZSM-5 materials for low-temperature hydrocarbon trapping. It was found that the thermal stability was improved, and Pd underwent oxidation and migrated into the zeolite's channels during thermal aging, enhancing the trapping of hydrocarbons.
Article
Engineering, Marine
Renata Iuzmukhametova, Roman Boldushevskii, Olga Shmelkova, Yunir Khamzin, Artem Minaev, Pavel Nikulshin
Summary: Adsorptive treatment using granulated macroporous Al2O3-SiO2 adsorbent is proposed as a preliminary stage for residue pretreatment in refineries. The study evaluates the adsorptive treatment process and discusses the role of feed dilution, process temperature, and feed rate. The regenerated adsorbent has a smaller macropore size and volume but does not significantly impact demetallization. The pretreated residual product undergoes hydrotreatment to produce low-sulfur marine fuel.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Aleksei Iusovskii, Roman Boldushevskii, Aleksandr Mozhaev, Olga Shmelkova, Elizaveta Pavlycheva, Aleksandr Koklyukhin, Pavel Nikulshin
Summary: This article presents the prospect of using highly active NiMo catalysts for deep hydrodesulfurization and hydrodearomatization of secondary gas oils to obtain hydrocarbon bases for drilling fluids. The study shows that the impregnating solution concentration affects the composition and morphology of the catalyst, while the carrier's pore volume influences the physicochemical properties and catalytic activity of the NiMo/Al2O3 catalysts.
Article
Chemistry, Multidisciplinary
Yury A. Teterin, Andrei E. Putkov, Mikhail V. Ryzhkov, Konstantin I. Maslakov, Anton Yu. Teterin, Kirill E. Ivanov, Stepan N. Kalmykov, Vladimir G. Petrov
Summary: The density of electronic states and XPS spectrum of FmO2 valence electrons were calculated using the fully relativistic method. It was found that the electrons in the outer and inner valence molecular orbitals contribute to the complex structure of the XPS spectrum in different energy ranges. The MO diagram of FmO2 was constructed and the contribution of the electrons in the outer and inner valence MOs to the chemical bond was estimated.
MENDELEEV COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Andrey E. Vertepov, Anna A. Fedorova, Alexander M. Batkin, Alexander V. Knotko, Konstantin I. Maslakov, Vladimir D. Doljenko, Alexander V. Vasiliev, Gennadiy I. Kapustin, Tatyana B. Shatalova, Nadezhda M. Sorokina, Leonid M. Kustov, Igor V. Morozov, Alexander L. Kustov
Summary: In this study, copper (II)-zinc oxide catalysts were successfully synthesized using fi-cyclodextrin as a template. The addition of cerium at the gelation stage was found to enhance the performance of the catalyst in the conversion of carbon dioxide to methanol, achieving high selectivity and productivity.
Article
Chemistry, Multidisciplinary
Mikhail Y. Y. Lukianov, Anna A. A. Rubekina, Julia V. V. Bondareva, Andrey V. V. Sybachin, George D. D. Diudbin, Konstantin I. I. Maslakov, Dmitry G. G. Kvashnin, Olga G. G. Klimova-Korsmik, Evgeny A. A. Shirshin, Stanislav A. A. Evlashin
Summary: The extraordinary properties of two-dimensional materials make them attractive for various applications, especially in optics. In this study, the absorption and luminescent properties of MoS2 exfoliated in the presence of sodium cholate were investigated. The use of shear-assisted liquid-phase exfoliation and sodium cholate as a surfactant resulted in the highest quality MoS2 nanosheets. The photoluminescent properties of MoS2 nanosheets showed slight variations with changes in surfactant concentrations. This work is of practical importance for improving the photoluminescent properties of MoS2 through chemical functionalization.
Article
Chemistry, Organic
V. S. Dorokhov, O. L. Ovsienko, S. S. Chugunov, M. V. Rogozina, N. A. Anikeev, P. A. Nikulshin
Summary: This study demonstrates the potential of computer-aided engineering and additive manufacturing techniques for fabricating protective layer materials with novel filtration channel designs. By using computational fluid dynamics simulations, potential locations for capturing solid dust particles in ceramic filter pellets were identified. Ceramic filter pellets were fabricated using laser stereolithography, and the printed samples were subjected to a filtration test. The feasibility of CFD models for filter material design was demonstrated through CFD simulations of the pellet channels to identify potential filtration locations and a comparative assessment using post-test X-ray computed tomography scan of the 3D-printed pellets.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Organic
O. V. Repina, S. V. Tarazanov, P. A. Nikulshin
Summary: This study investigated the synthesis of polysulfones from individual alpha-olefins and identified the correlation between the specific electrical conductivity of diesel fuels (DF) and the structure of the initial alkene. The antistatic properties of the synthesized polymers were studied in relation to polymer molecular weight and dispersant content, as well as the low-temperature properties of DFs containing polysulfone as an ashless antistatic additive.
PETROLEUM CHEMISTRY
(2023)
Article
Chemistry, Applied
E. A. Arkhipova, A. S. Ivanov, S. K. Nikolenko, K. I. Maslakov, S. V. Savilov, S. M. Aldoshin
Summary: The effect of reductive treatment on the phase composition, morphology, and electrochemical parameters of delta-MnO2 was studied. Reductive treatment increased the specific capacitance and reduced diffusion limitations during cycling.
RUSSIAN JOURNAL OF APPLIED CHEMISTRY
(2023)
Article
Chemistry, Physical
Bolun Yu, Denan Li, Qianqian Zhu, Shufan Yao, Lifeng Zhang, Yanshuo Li, Zhenxin Zhang
Summary: This study successfully improved the catalytic activity of a zeolitic octahedral metal oxide by incorporating a single zinc species into its micropore. The zinc incorporation achieved a high ethane conversion rate and ethylene selectivity. Mechanism study showed that the isolated zinc site played a crucial role in activating oxygen and ethane, as well as stabilizing intermediates and transition states.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Ruoqi Liu, Hao Fei, Jian Wang, Ting Guo, Fangyang Liu, Zhuangzhi Wu, Dezhi Wang
Summary: This work successfully synthesized a high-performing S-enriched MoS2 catalyst for electrocatalytic nitrogen reduction reaction (NRR), demonstrating high activity and selectivity. The synergistic effect of the 1T phase and bridging S22- species was shown to play a positive role in NRR performances, and DFT calculations revealed the mechanism behind the improved performance.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Pan Xia, Lele Zhao, Xi Chen, Zhihong Ye, Zhihong Zheng, Qiang He, Ignasi Sires
Summary: This study presents a modified gas-diffusion electrode (GDE) for highly efficient and stable H2O2 electrosynthesis by using trace polymethylhydrosiloxane (PMHS). DFT calculations provide an in-depth understanding of the roles of PMHS functional groups.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Kwangchol Ri, Songsik Pak, Dunyu Sun, Qiang Zhong, Shaogui Yang, Songil Sin, Leliang Wu, Yue Sun, Hui Cao, Chunxiao Han, Chenmin Xu, Yazi Liu, Huan He, Shiyin Li, Cheng Sun
Summary: Different B-doped rGO catalysts were synthesized and their 2e- oxygen reduction reaction (ORR) performance was investigated. It was found that the 2e- ORR selectivity of B-doped rGO was influenced by the B content and oxygen mass transfer conditions. The synthesized catalyst exhibited high 2e- ORR selectivity and was capable of degrading organic pollutants continuously.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Li Lv, Lin Lei, Qi-Wen Chen, Cheng-Li Yin, Huiqing Fan, Jian-Ping Zhou
Summary: Monoclinic phase La2Ti2O7 and orthorhombic phase Bi4Ti3O12 are widely used in photocatalysis due to their layered crystal structure. The electronic structures of these phases play a crucial role in their photocatalytic activity. Heat treatment in a nitrogen atmosphere introduces more oxygen vacancies into the S-scheme heterojunction, leading to enhanced NO removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Choe Earn Choong, Minhee Kim, Jun Sup Lim, Young June Hong, Geon Joon Lee, Keun Hwa Chae, In Wook Nah, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: In this study, the synergistic effect between argon-plasma-system (AP) and catalysts in promoting the production of reactive species for water remediation was investigated. By altering the oxygen vacancies concentration of CeO2/Bi2O3 catalyst, the production of hydrated electrons was stimulated for PFOA removal. The results showed that the built-in electric field in the Bi/Ce0.43 interface enhanced electron migration and eaq- generation, leading to improved PFOA removal efficiency.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yushan Wu, Di Xu, Yanfei Xu, Xin Tian, Mingyue Ding
Summary: Efficient synthesis of primary amines from carbonyl compounds was achieved via reductive amination using Ru@NC-Al2O3 as a catalyst, exhibiting high activity and selectivity under mild conditions.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Yilan Jiang, Peifang Wang, Tingyue Chen, Keyi Gao, Yiran Xiong, Yin Lu, Dionysios D. Dionysiou, Dawei Wang
Summary: By controlling the content of Co and Ni in Co1-xNixFe2O4, the production of O-1(2) from H2O2 can be regulated. NiFe2O4, with the lowest lattice distortion degree, can efficiently produce O-1(2) as the dominant reactive oxygen species. The system also exhibits significant resistance to water matrix interference.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Shuai Feng, Donglian Li, Hao Dong, Song Xie, Yaping Miao, Xuming Zhang, Biao Gao, Paul K. Chu, Xiang Peng
Summary: In this study, MoO2/Mo2N heterostructures were prepared by regulating the coordination of Mo atoms. The electrocatalyst exhibits high current density and excellent stability for hydrogen evolution reaction.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Jia-Cheng E. Yang, Min -Ping Zhu, Daqin Guan, Baoling Yuan, Darren Delai Sun, Chenghua Sun, Ming-Lai Fu
Summary: This study successfully modulated the electron configuration and spin state of millimetric metal catalysts by adjusting the support curvature radius. The electronic structure-oriented spin catalysis was found to affect the degradation of pollutants, providing new insights for the design and production of highly active, reusable, and stable catalysts.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Tao Zhong, Su Tang, Wenbin Huang, Wei Liu, Huinan Zhao, Lingling Hu, Shuanghong Tian, Chun He
Summary: In this study, a highly efficient photocatalyst for the elimination of CH3SH was developed by engineering different crystal facets and coupling them with PHI. Cu (111)/PHI exhibited the highest elimination efficiency and showed good stability and reusability. The enhanced surface electron pump effect and effective adsorption mechanisms were revealed through comprehensive characterizations and DFT calculations.
APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY
(2024)
Article
Chemistry, Physical
Feifei Yang, Tianyu Zhang, Jiankang Zhao, Wei Zhou, Nicole J. Libretto, Jeffrey T. Miller
Summary: A Ni3Sn intermetallic nano particle was found to have geometrically isolated Ni sites that could selectively cleave C-O bonds in biomass derivatives. This nano particle showed high activity and selectivity towards 2-methylfuran, unlike Ni nanoparticles that produced other unwanted products derived from the aromatic rings.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Lulu Qiao, Di Liu, Anquan Zhu, Jinxian Feng, Pengfei Zhou, Chunfa Liu, Kar Wei Ng, Hui Pan
Summary: This study reveals that surface evolution plays a crucial role in enhancing the electrocatalytic performance of transition metal oxides for electrochemical nitrate reduction reaction (e-NO3RR). Incorporating nickel into Co3O4 can promote surface reconstruction and improve the adsorption of intermediates and reduce energy barriers, leading to enhanced catalytic performance. The reconstructed cobalt-nickel hydroxides (CoyNi1_y(OH)2) on the catalyst's surface serve as the active phase.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Physical
Yangzhuo He, Hong Qin, Ziwei Wang, Han Wang, Yuan Zhu, Chengyun Zhou, Ying Zeng, Yicheng Li, Piao Xu, Guangming Zeng
Summary: A dual-metal-organic framework (MOF) assisted strategy was proposed to construct a magnetic Fe-Mn oxycarbide anchored on N-doped carbon for peroxymonosulfate (PMS) activation. The FeMn@NC-800 catalyst exhibited superior activity with almost 100% degradation of sulfamethazine (SMZ) in 30 minutes. The study provided insights for the rational design of high-performance heterogeneous catalysts and proposed a novel nonradical-based catalytic oxidation for environmental cleaning.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)