Article
Engineering, Chemical
Linfeng Lei, Arne Lindbrathen, Magne Hillestad, Xuezhong He
Summary: Asymmetric carbon molecular sieve (CMS) membranes prepared from cellulose hollow fiber precursors show excellent separation performance and high stability for H2/CO2 separation. A two-stage carbon membrane system is found to be technologically and economically feasible for producing high-purity H2. It is suggested that higher operating temperatures are needed to achieve higher purity hydrogen.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Review
Chemistry, Physical
Wan Nabilah Manan, Wan Nor Roslam Wan Isahak, Zahira Yaakob
Summary: This paper reviews the management of CO2 emissions and the recent developments in bimetallic catalysts utilizing cerium oxide in dry reforming methane and steam reforming methane from 2015 to 2021. The focus is on the identification of key trends in catalyst preparation using cerium oxide and the effectiveness of the formulated catalysts.
Article
Engineering, Chemical
Oscar Ovalle-Encinia, Han-Chun Wu, Tianjia Chen, Jerry Y. S. Lin
Summary: Experimental and simulation results demonstrate the feasibility of hydrogen production with simultaneous CO2 removal through steam reforming of methane in a CO2-perm-selective membrane reactor. The mathematical model accurately describes the process, showing that adjusting permeation number, Damkohler number, reaction pressure, and sweep side conditions can enhance H2 yield and CO2 recovery.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Engineering, Chemical
Mingming Wang, Xiaoyao Tan, Julius Motuzas, Jiaquan Li, Shaomin Liu
Summary: The study produced metallic nickel hollow fiber membranes with a dense skin layer and porous nickel substrate for hydrogen production from methane steam reforming. The membranes showed high efficiency and stability, making them a promising option for cost-effective hydrogen production at high temperatures.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
E. A. Smal, M. N. Simonov, N. V. Mezentseva, T. A. Krieger, T. V. Larina, A. A. Saraev, T. S. Glazneva, A. V. Ishchenko, V. A. Rogov, N. F. Eremeev, E. M. Sadovskaya, V. A. Sadykov
Summary: This study elucidates the fundamental factors determining the performance of manganese-chromium oxides catalysts in ethanol steam reforming, with a focus on metal-support interaction, lattice oxygen mobility, and the positive effect of Ni-Ru interaction on catalytic activity. The catalyst with the highest TOF is a (Ni + Ru)-loaded oxide support containing cubic spinel phase of MnCr2O4 composition, which exhibits high density of active sites, surface enrichment by Mn, and sufficient oxygen mobility providing coking stability, making it attractive for practical application.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Zahra Taherian, Vahid Shahed Gharahshiran, Alireza Khataee, Yasin Orooji
Summary: In this study, a surface defect-promoted Ni catalyst supported on Mg/Al hydrotalcite via a freeze-dried method was synthesized by adding samarium, leading to an increase in oxygen vacancies and high dispersion of active sites. The samarium-promoted NiMgAl catalyst showed superior catalytic activity and stability in dry and steam reforming of methane due to the scaffold structure with surface defects and oxygen vacancies, which inhibit sintering and enhance mass transportation.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Physical
Yaning Wang, Rongjun Zhang, Binhang Yan
Summary: In this study, Ni/Ce0.9Eu0.1O1.95 catalysts with better activity and enhanced stability were synthesized for dry reforming of methane. The catalysts exhibited stronger lattice oxygen mobility, higher oxygen storage capacity, and a strong metal-support interaction, which contributed to the reduction of carbon deposition and sintering. As a result, the catalyst achieved a balance between the rate of carbon generation and carbon consumption, leading to improved overall catalytic performance.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Chao Wang, Wei Liu, Mingzheng Liao, Jiahong Weng, Jian Shen, Ying Chen, Yanping Du
Summary: This paper reports the application of high entropy oxides (HEO) in ethanol steam reforming (ESR) and the characterization of a spinel-phase nano structure HEO. The results show that an abundance of oxygen vacancies were formed in the HEO and the metals spilled out as active species for hydrogen production during ESR. The HEO also exhibited a high thermal stability and achieved a high hydrogen yield and selectivity. This research offers possibilities for thermal catalytic hydrogen production under high temperature conditions.
Article
Energy & Fuels
Xia An, Caiqin Feng, Jia Ren, Kai Shi, Yali Du, Xianmei Xie, Xu Wu
Summary: In this study, high-performance Ethanol Steam Reforming (ESR) catalyst was prepared by adding copper and magnesium into NiAl Layered Double Hydroxides (NiAl-LDHs) using the coprecipitation method. The addition of Cu metal increased ethanol conversion rate and Mg helped neutralize acid sites, preventing the production of ethylene as a dehydration product. Through catalyst composition and structure optimization, the ethanol was completely converted and stable hydrogen production was achieved in a 19-hour test.
JOURNAL OF THE ENERGY INSTITUTE
(2021)
Article
Chemistry, Applied
Shiwei Ma, Fang Cheng, Junguang Meng, Huijun Ge, Ping Lu, Tao Song
Summary: The feasibility of using Ni-enhanced red mud in chemical looping steam methane reforming (CL-SMR) was evaluated. It was found that the Ni-enhanced red mud displayed desirable reactivity and cyclic stability, with CO selectivity reaching 94.1% and H-2/CO ratio of 2.01 at the most suitable temperature of 900 C. The Ni species effectively activated the C-H bond of methane and facilitated the transfer of lattice oxygen.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Yutichai Mueanngern, Cheng-Han Li, Meiling Spelic, Joshua Graham, Nathan Pimental, Yehia Khalifa, Joerg R. Jinschek, L. Robert Baker
Summary: Ni based catalysts with controlled sub-monolayer deposition of CeO2 nanocubes show significantly enhanced H-2 production for ethanol steam reforming. The active catalysts exhibit significant C deposition on the surface without deactivation, forming a Ni@CFIL active phase. Mesoscale morphology of CeO2 nanocubes plays a key role in templating the formation of the Ni@CFIL catalyst for stable H-2 production.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Applied
Srikar Bhattar, Md Ashraful Abedin, Swarom Kanitkar, James J. Spivey
Summary: Perovskite-derived catalysts in dry reforming of methane exhibit superior catalytic performance due to the synergistic effects of bimetallic addition at the B site and enhanced oxygen mobility through A site substitutions. The use of high surface area supports also greatly influences the physicochemical and catalytic behavior of perovskite-derived catalysts. The exsolution process involved in the reduction of perovskite catalysts produces smaller size metal particles which dictate the superior catalytic performance of these materials.
Article
Chemistry, Physical
Vladislav A. Sadykov, Nikita F. Eremeev, Yulia E. Fedorova, Alexey V. Krasnov, Ludmilla N. Bobrova, Yulia N. Bespalko, Anton I. Lukashevich, Pavel I. Skriabin, Oleg L. Smorygo, Andre C. Van Veen
Summary: The focus of the research was on designing supported membranes for oxygen and hydrogen separation using nanocomposites deposited on Ni-Al foam substrates. Oxygen separation membranes were tested in CH4 selective oxidation/oxy-dry reforming, while hydrogen separation membranes were tested in C2H5OH steam reforming, showing high oxygen/hydrogen fluxes.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Xinfei Chen, Luwen Wang, Yan Lin, Tao Zeng, Zhen Huang, Yongqi Zhang, Ya Xiong, Jun Li, Lisheng Deng, Hongyu Huang
Summary: Ca2Fe2O5/Zr0.5Ce0.5O2 exhibited excellent reactivity in chemical looping dry reforming of methane. The migration of lattice oxygen during redox process was explored, revealing the release of lattice oxygen, structural change, and crystalline phase transformation. The understanding of oxygen migration provides a reference for improving the cyclic stability of Ca2Fe2O5/Zr0.5Ce0.5O2.
FUEL PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zhifeng Hu, Zhenwu Miao, Jiawei Wu, Enchen Jiang
Summary: Ni/Fe modification of natural ores can improve the reactivity and stability of oxygen carrier for chemical looping steam methane reforming (CL-SMR), enhancing performance and inhibiting agglomeration, with the optimum steam to OC ratio being 0.05. The high ratio of iron to nickel may lead to sintering and decline in OC performance, while the optimal CH4 to OC ratio for highest performance is 0.04.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Serguei Tikhov, Tatiana Minyukova, Konstantin Valeev, Svetlana Cherepanova, Andrey Saraev, Vasily Kaichev, Egor Aidakov, Oleg Smorygo, Anastasia Vazhnova, Vitali Mikutski
Summary: Mechanochemical alloying and subsequent hydro-thermal treatment and calcination were used to synthesize ceramometal catalysts with Cu + Al and Cu + Fe + Al powders. CuAl + Cufoam and CuFeAl + Cufoam ceramometal catalysts reinforced with Cu foam were also synthesized. CuAl ceramometals showed higher activity in the water-gas shift reaction due to a higher concentration of active sites on their surface. The activity of ceramometal granules was enhanced by the integration with foam Cu, resulting in a higher thermal conductivity and improved catalytic properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Vladislav A. Sadykov, Nikita F. Eremeev, Ekaterina M. Sadovskaya, Anna Shlyakhtina, Elena Yu Pikalova, Denis A. Osinkin, Aleksey A. Yaremchenko
Summary: Advancements in material design for solid oxide fuel cells, oxygen and hydrogen separation membranes, and catalysts for biofuel conversion have led to the development of more efficient cathodes and anodes, highly permeable membranes, and structured catalysts with nanocompositeactive components, demonstrating improved performance and stability in biofuel reforming processes.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Oleg Smorygo, Anastasia Vazhnova, Vitali Mikutski, Aliaksandr Ilyushchanka, Serguei Tikhov, Konstantin Valeev, Svetlana Cherepanova
Summary: Metal foam reinforced cermet-matrix composites were synthesized using a low-temperature hydrothermal treatment, showing improved compressive strength and bi-porous structure. The metal foam skeleton increased thermal conductivity and prevented catastrophic destruction. The copper foam reinforced cermet catalyst exhibited higher activity in catalytic reactions.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
E. Pikalova, N. Eremeev, E. Sadovskaya, V Sadykov, V Tsvinkinberg, N. Pikalova, A. Kolchugin, A. Vylkov, I Baynov, E. Filonova
Summary: This study investigates the properties of La2NiO4+delta (LNO) substituted with rare earth elements and their effects on oxygen transport and electrochemical properties. The results show that substitution with rare earth elements can increase the oxygen over-stoichiometry and improve the oxygen transport properties of LNO, thus enhancing the electrochemical performance of the related electrodes.
SOLID STATE IONICS
(2022)
Article
Chemistry, Inorganic & Nuclear
Eugene V. V. Dokuchits, Tatyana Yu. Kardash, Tatyana V. V. Larina, Yuliya N. N. Bespalko, Tatyana P. P. Minyukova
Summary: Highly dispersed LaCo1-x-yCuxTiyO3/KIT-6 perovskites were synthesized with the addition of inert mesoporous KIT-6, and the KIT-6 matrix was removed to obtain highly dispersed perovskites. The dispersion of perovskites may vary depending on the largest cation and its content at the B position of the ABO(3) structure.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Valeria Fedorova, Yulia Bespalko, Marina Arapova, Ekaterina Smal, Konstantin Valeev, Igor Prosvirin, Vladislav Sadykov, Ksenia Parkhomenko, Anne-Cecile Roger, Mikhail Simonov
Summary: Mixed Ce-Zr oxides with a fluorite structure were prepared via solvothermal synthesis in supercritical isopropanol. These oxides were used as catalyst supports for Ni and bimetallic Ni+Co catalysts, which were tested in ethanol dry reforming. The catalytic activity was found to depend on the metal support interaction and the Ce/Zr ratio in the support, with the presence of nickel being essential for high activity. Cobalt addition did not enhance activity or stability, but reduced carbon deposition and formation rate.
Editorial Material
Energy & Fuels
Vladislav Sadykov
Article
Energy & Fuels
Marina Arapova, Ekaterina Smal, Yuliya Bespalko, Konstantin Valeev, Valeria Fedorova, Amir Hassan, Olga Bulavchenko, Vladislav Sadykov, Mikhail Simonov
Summary: This paper focuses on the exploration of active and stable nickel catalysts for methane dry reforming using Pr-doped ceria-zirconia obtained via the solvothermal continuous method. It is found that the introduction of Pr increases the amount of highly reactive oxygen in the oxide lattice, leading to significantly higher reactant conversions. The method of nickel introduction has a significant impact on the morphology of the particles, Ni-support interaction, catalytic activity, and coking stability.
Article
Biochemistry & Molecular Biology
Ekaterina Smal, Yulia Bespalko, Marina Arapova, Valeria Fedorova, Konstantin Valeev, Nikita Eremeev, Ekaterina Sadovskaya, Tamara Krieger, Tatiana Glazneva, Vladislav Sadykov, Mikhail Simonov
Summary: A series of 5%Ni/Ce1-xTixO2 catalysts were prepared using nickel impregnation of mixed Ce-Ti oxides obtained via synthesis in supercritical isopropanol. The addition of Ti into the cubic fluorite phase structure increased the total reducibility of the catalysts and improved the interaction of supported Ni with the oxide support. The incorporation of Ti also prevented the detachment and sintering of Ni particles during dry reforming of methane.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Yuliya Bespalko, Nikita Eremeev, Ekaterina Sadovskaya, Tamara Krieger, Olga Bulavchenko, Evgenii Suprun, Mikhail Mikhailenko, Mikhail Korobeynikov, Vladislav Sadykov
Summary: This study focuses on the synthesis and investigation of materials based on bismuth cerates and titanates. Different complex oxides were synthesized using different methods, and their structures were studied. The research also explores the oxygen diffusion mechanism in these materials.
Review
Biochemistry & Molecular Biology
Vladislav Sadykov, Elena Pikalova, Ekaterina Sadovskaya, Anna Shlyakhtina, Elena Filonova, Nikita Eremeev
Summary: Oxygen and hydrogen mobility are important characteristics for the operation of electrochemical devices, and this work focuses on studying the diffusion of mixed ionic-electronic conducting materials and its role in device performance. The main laws of bulk diffusion and surface exchange are highlighted, and isotope exchange techniques are used to study these processes in detail. Ionic transport properties of various conventional and state-of-the-art materials are reviewed.
Article
Chemistry, Inorganic & Nuclear
Vladislav A. A. Sadykov, Nikita F. F. Eremeev, Ekaterina Sadovskaya, Julia E. E. Fedorova, Marina V. V. Arapova, Ludmilla N. N. Bobrova, Arkady V. V. Ishchenko, Tamara A. A. Krieger, Maksim S. S. Melgunov, Tatyana S. S. Glazneva, Vasily V. V. Kaichev, Vladimir A. A. Rogov
Summary: The mesoporous MgAl2O4 support was doped with transition metal cations (Fe, Cr, Ti) to prevent the incorporation of Ni and rare-earth cations (Pr, Ce, Zr) and provide additional CO2 activation sites to prevent coking. The doped MgAl1.9Me0.1O4 (Me = Fe, Ti, Cr) mesoporous supports exhibited single-phase spinels with varying specific surface areas. Doped supports showed higher efficiency and coking stability in methane dry reforming and ethanol steam reforming compared to undoped supports and Ni-containing catalysts.
DALTON TRANSACTIONS
(2023)
