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Alhassan M, Jalil AA, Owgi AHK, Hamid MYS, Bahari MB, Van Tran T, Nabgan W, Hatta AH, Khusnun NFB, Amusa AA, Nyakuma BB. Emerging trends in hydrogen and synfuel generation: a state-of-the-art review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:42640-42671. [PMID: 38902444 DOI: 10.1007/s11356-024-34021-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 06/13/2024] [Indexed: 06/22/2024]
Abstract
The current work investigated emerging fields for generating and consuming hydrogen and synthetic Fischer-Tropsch (FT) fuels, especially from detrimental greenhouse gases, CO2 and CH4. Technologies for syngas generation ranging from partial oxidation, auto-thermal, dry, photothermal and wet or steam reforming of methane were adequately reviewed alongside biomass valorisation for hydrogen generation, water electrolysis and climate challenges due to methane flaring, production, storage, transportation, challenges and opportunities in CO2 and CH4 utilisation. Under the same conditions, dry reforming produces more coke than steam reforming. However, combining the two techniques produces syngas with a high H2/CO ratio, which is suitable for producing long-chain hydrocarbons. Although the steam methane reforming (SMR) process has been industrialised, it is well known to consume significant energy. However, coke production via catalytic methane decomposition, the prime hindrance to large-scale implementation of these techniques for hydrogen production, could be addressed by coupling CO with CO2 conversion to alter the H2/CO ratio of syngas, increasing the reaction temperatures in dry reforming, or increasing the steam content fed in steam reforming. Optimised hydrogen production and generation of green fuels from CO2 and CH4 can be achieved by implementing these strategies.
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Affiliation(s)
- Mansur Alhassan
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
- Department of Chemistry, Sokoto State University, P. M. B 2134, Airport Road, Sokoto, Nigeria
| | - Aishah Abdul Jalil
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
- Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia.
| | | | - Muhamed Yusuf Shahul Hamid
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Mahadi Bin Bahari
- Faculty of Science, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Thuan Van Tran
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
- Institute of Applied Technology & Sustainable Development, Nguyen Tat Thanh University, 298-300A Nguyen Tat Thanh, District 4, HCMC, 755414, Viet Nam
| | - Walid Nabgan
- Departament d'Enginyeria Química, Universitat Rovira i Virgili, Av Països Catalans 26, 43007, Tarragona, Spain
| | - Abdul Hakim Hatta
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Nur Farahain Binti Khusnun
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Abiodun Abdulhameed Amusa
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
- Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia
| | - Bemgba Bevan Nyakuma
- Department of Chemical Sciences, Faculty of Science and Computing, Pen Resource University, P.M.B 0198, Gombe, Gombe State, Nigeria
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Markov AA, Merkulov OV, Suntsov AY. Development of Membrane Reactor Coupling Hydrogen and Syngas Production. MEMBRANES 2023; 13:626. [PMID: 37504992 PMCID: PMC10384818 DOI: 10.3390/membranes13070626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/23/2023] [Accepted: 06/24/2023] [Indexed: 07/29/2023]
Abstract
Simultaneous syngas and pure hydrogen production through partial oxidation of methane and water splitting, respectively, were demonstrated by using mixed ionic-electronic conductors. Tubular ceramic membranes prepared from La0.5Sr0.5FeO3 perovskite were successfully utilized in a 10 M lab scale reactor by applying a radial arrangement. The supply of methane to the middle area of the reaction zone was shown to provide a uniform distribution of the chemical load along the tubes' length. A steady flow of steam feeding the inner part of the membranes was used as oxidative media. A described configuration was found to be favorable to maintaining oxygen permeability values exceeding 1.1 mL∙cm-2∙min-1 and long-term stability of related functional characteristics. Methane's partial oxidation reaction assisted by 10%Ni@Al2O3 catalyst proceeded with selectivity values above 90% and conversion of almost 100%. The transition from a laboratory model of a reactor operating on one tubular membrane to a ten-tube one resulted in no losses in the specific performance. The optimized supply of gaseous fuel opens up the possibility of scaling up the reaction zone and creating a promising prototype of a multitubular reaction zone with a simplified sealing procedure.
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Affiliation(s)
- Alexey A Markov
- Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences (SB RAS), Novosibirsk 630090, Russia
| | - Oleg V Merkulov
- Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences (UB RAS), Yekaterinburg 620990, Russia
| | - Alexey Yu Suntsov
- Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences (UB RAS), Yekaterinburg 620990, Russia
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3
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Somchuea P, Sukprom T, Sringam S, Ampansang S, Witoon T, Chareonpanich M, Faungnawakij K, Rupprechter G, Seubsai A. Conversion of Methane to Value-Added Hydrocarbons via Modified Fischer–Tropsch Process Using Hybrid Catalysts. Top Catal 2023. [DOI: 10.1007/s11244-023-01808-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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4
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Harbin HJ, Unruh DK, Casadonte DJ, J. Khatib S. Sonochemically Prepared Ni-Based Perovskites as Active and Stable Catalysts for Production of CO x-Free Hydrogen and Structured Carbon. ACS Catal 2023. [DOI: 10.1021/acscatal.2c05672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Affiliation(s)
- Hannah J. Harbin
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Daniel K. Unruh
- MATFab Facility, The University of Iowa, Iowa City, Iowa 52242, United States
| | - Dominick J. Casadonte
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409, United States
| | - Sheima J. Khatib
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24060, United States
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Malyshev SA, Shlyakhtin OA, Loktev AS, Mazo GN, Timofeev GM, Mukhin IE, Svetogorov RD, Roslyakov IV, Dedov AG. Ni/(R 2O 3,CaO) Nanocomposites Produced by the Exsolution of R 1.5Ca 0.5NiO 4 Nickelates (R = Nd, Sm, Eu): Rare Earth Effect on the Catalytic Performance in the Dry Reforming and Partial Oxidation of Methane. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7265. [PMID: 36295329 PMCID: PMC9610205 DOI: 10.3390/ma15207265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/13/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
In order to clarify the role of R2O3 in the metal-oxide catalysts derived from complex oxide precursors, a series of R1.5Ca0.5NiO4 (R = Nd, Sm, Eu) complex oxides was obtained. A significant systematic increase in the orthorhombic distortion of the R1.5Ca0.5NiO4 structure (K2NiF4 type, Cmce) from Nd to Eu correlates with a corresponding decrease in their ionic radii. A reduction of R1.5Ca0.5NiO4 in the Ar/H2 gas mixture at 800 °C causes a formation of dense agglomerates of CaO and R2O3 coated with spherical 25-30 nm particles of Ni metal. The size of metal particles and oxide agglomerates is similar in all Ni/(R2O3,CaO) composites in the study. Their morphology is rather similar to the products of redox exsolution obtained by the partial reduction of complex oxides. All obtained composites demonstrated a significant catalytic activity in the dry reforming (DRM) and partial oxidation (POM) of methane at 700-800 °C. A systematic decrease in the DRM catalytic activity of composites from Nd to Eu could be attributed to the basicity reduction of R2O3 components of the composite catalysts. The maximum CH4 conversion in POM reaction was observed for Ni/(Sm2O3,CaO), while the maximum selectivity was demonstrated by Nd2O3-based composite. The possible reasons for the observed difference are discussed.
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Affiliation(s)
- Sergey A. Malyshev
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
- Department of Materials Sciences, Shenzhen MSU-BIT University, Shenzhen 518172, China
| | - Oleg A. Shlyakhtin
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Alexey S. Loktev
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia
- Department of General and Inorganic Chemistry, Gubkin Russian State University of Oil and Gas, 119991 Moscow, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Galina N. Mazo
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Grigoriy M. Timofeev
- Department of Chemistry, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Igor E. Mukhin
- Department of General and Inorganic Chemistry, Gubkin Russian State University of Oil and Gas, 119991 Moscow, Russia
| | | | - Ilya V. Roslyakov
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
- Department of Materials Sciences, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
| | - Alexey G. Dedov
- A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 119991 Moscow, Russia
- Department of General and Inorganic Chemistry, Gubkin Russian State University of Oil and Gas, 119991 Moscow, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
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Coupling water splitting and partial oxidation of methane (POM) in Ag modified La0.8Ca0.2Fe0.94O3-δ hollow fiber membrane reactors for co-production of H2 and syngas. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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Partial Oxidation of Methane over CaO Decorated TiO2 Nanocatalyst for Syngas Production in a Fixed Bed Reactor. Catalysts 2022. [DOI: 10.3390/catal12101089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Syngas is a valuable entity for downstream liquid fuel production and chemical industries. The efficient production of syngas via catalytic partial oxidation of methane (CPOM) is an important process. In this study, partial oxidation of methane (POM) was carried out using CaO decorated TiO2 catalysts. The catalysts were synthesized employing the sol-gel method, while the decoration of TiO2 with CaO was achieved in an aqueous solution by wetness impregnation method. The prepared catalysts were characterized by employing XRD, Raman, TG-DTG, and SEM-EDX for structural and morphological analysis. On testing for POM, at 750 °C the catalysts demonstrate excellent CH4 conversion of 83.6 and 79.5% for 2% and 3% CaO loaded TiO2, respectively. While the average H2/CO ratio for both 2% and 3% CaO loaded TiO2, 2.25 and 2.28, respectively, remained slightly above the theoretical value (H2/CO = 2.0) of POM. The improved POM performance is attributed to the optimally loaded CaO on the TiO2 surface that promotes the reaction where TiO2 support ensure less agglomerated particles, resulting into a fine distribution of the active catalytic sites.
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8
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Matus Е, Ismagilov I, Mikhaylova E, Ismagilov Z. Hydrogen Production from Coal Industry Methane. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2022. [DOI: 10.18321/ectj1320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Coal industry methane is a fossil raw material that can serve as an energy carrier for the production of heat and electricity, as well as a raw material for obtaining valuable products for the chemical industry. To ensure the safety of coal mining, rational environmental management and curbing global warming, it is important to develop and improve methods for capturing and utilizing methane from the coal industry. This review looks at the scientific basis and promising technologies for hydrogen production from coal industry methane and coal production. Technologies for catalytic conversion of all types of coal industry methane (Ventilation Air Methane – VAM, Coal Mine Methane – CMM, Abandoned Mine Methane – AMM, Coal-Bed Methane – CBM), differing in methane concentration and methane-to-air ratio, are discussed. The results of studies on the creation of a number of efficient catalysts for hydrogen production are presented. The great potential of hybrid methods of processing natural coal and coal industry methane has been demonstrated.
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Dedov AG, Loktev AS, Gavrikov AV, Bykov MA, Mukhin IE, Ilyukhin AB. A New Method to Prepare Ni/La2O3 Nanocomposites—Efficient Catalysts for the Partial Oxidation of Methane into Syngas. DOKLADY CHEMISTRY 2022. [DOI: 10.1134/s0012500822600328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Siang T, Jalil A, Liew S, Owgi A, Rahman A. A review on state-of-the-art catalysts for methane partial oxidation to syngas production. CATALYSIS REVIEWS 2022. [DOI: 10.1080/01614940.2022.2072450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- T.J. Siang
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - A.A. Jalil
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
- Centre of Hydrogen Energy, Institute of Future Energy, Universiti Teknologi Malaysia, Johor, Malaysia
| | - S.Y. Liew
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - A.H.K. Owgi
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
| | - A.F.A. Rahman
- School of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Johor, Malaysia
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11
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Sun Z, Liu Z, Cai C, Deng H, Yang F, Lu Y, Song X, An S, Zhao H. High performance oxygen permeation membrane: Sr and Ti co-doped BaFeO3-δ ceramics. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120742] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Naeem N, Khoja AH, Butt FA, Arfan M, Liaquat R, Hasnat AU. Partial oxidation of methane over biomass fly ash (BFA)-supported Ni/CaO catalyst for hydrogen-rich syngas production. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-022-04685-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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13
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LaParola V, Pantaleo G, Venezia A. Effect of active and inert oxide on catalytic partial oxidation (CPO) of methane over supported Ni catalysts. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2021.120710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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14
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Ren Y, Yang Y, Zhao YX, He SG. Conversion of Methane with Oxygen to Produce Hydrogen Catalyzed by Triatomic Rh 3 - Cluster Anion. JACS AU 2022; 2:197-203. [PMID: 35098236 PMCID: PMC8790732 DOI: 10.1021/jacsau.1c00469] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Indexed: 06/14/2023]
Abstract
Metal catalysts, especially noble metals, have frequently been prepared upon downsizing from nanoparticles to subnanoclusters to catalyze the important reaction of partial oxidation of methane (POM) in order to optimize the catalytic performance and conserve metal resources. Here, benefiting from mass spectrometric experiments in conjunction with photoelectron spectroscopy and quantum chemical calculations, we successfully determine that metal cluster anions composed of only three Rh atoms (Rh3 -) can catalyze the POM reaction with O2 to produce 2H2 + CO2 under thermal collision conditions (∼300 K). The interdependence between CH4 and O2 to protect Rh3 - from collapse and to promote conversion of CH4 → 2H2 has been clarified. This study not only provides a promising metal cluster displaying good catalytic behavior in POM reaction under mild conditions but also reveals a strictly molecular-level mechanism of direct partial oxidation for the production of hydrogen, a promising renewable energy source in the 21st century.
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Affiliation(s)
- Yi Ren
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yuan Yang
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Yan-Xia Zhao
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Beijing
National Laboratory for Molecular Sciences and CAS Research/Education
Centre of Excellence in Molecular Sciences, Beijing 100190, P. R. China
| | - Sheng-Gui He
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Beijing
National Laboratory for Molecular Sciences and CAS Research/Education
Centre of Excellence in Molecular Sciences, Beijing 100190, P. R. China
- University
of Chinese Academy of Sciences, Beijing 100049, P. R.
China
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15
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Tang Y, Li Y, Feng Tao F. Activation and catalytic transformation of methane under mild conditions. Chem Soc Rev 2021; 51:376-423. [PMID: 34904592 DOI: 10.1039/d1cs00783a] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the last few decades, worldwide scientists have been motivated by the promising production of chemicals from the widely existing methane (CH4) under mild conditions for both chemical synthesis with low energy consumption and climate remediation. To achieve this goal, a whole library of catalytic chemistries of transforming CH4 to various products under mild conditions is required to be developed. Worldwide scientists have made significant efforts to reach this goal. These significant efforts have demonstrated the feasibility of oxidation of CH4 to value-added intermediate compounds including but not limited to CH3OH, HCHO, HCOOH, and CH3COOH under mild conditions. The fundamental understanding of these chemical and catalytic transformations of CH4 under mild conditions have been achieved to some extent, although currently neither a catalyst nor a catalytic process can be used for chemical production under mild conditions at a large scale. In the academic community, over ten different reactions have been developed for converting CH4 to different types of oxygenates under mild conditions in terms of a relatively low activation or catalysis temperature. However, there is still a lack of a molecular-level understanding of the activation and catalysis processes performed in extremely complex reaction environments under mild conditions. This article reviewed the fundamental understanding of these activation and catalysis achieved so far. Different oxidative activations of CH4 or catalytic transformations toward chemical production under mild conditions were reviewed in parallel, by which the trend of developing catalysts for a specific reaction was identified and insights into the design of these catalysts were gained. As a whole, this review focused on discussing profound insights gained through endeavors of scientists in this field. It aimed to present a relatively complete picture for the activation and catalytic transformations of CH4 to chemicals under mild conditions. Finally, suggestions of potential explorations for the production of chemicals from CH4 under mild conditions were made. The facing challenges to achieve high yield of ideal products were highlighted and possible solutions to tackle them were briefly proposed.
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Affiliation(s)
- Yu Tang
- Institute of Molecular Catalysis and In situ/operando Studies, College of Chemistry, Fuzhou University, Fujian, 350000, China.
| | - Yuting Li
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
| | - Franklin Feng Tao
- Department of Chemical and Petroleum Engineering, University of Kansas, KS 66045, USA.
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Ohayon Dahan H, Landau MV, Vidruk Nehemya R, Edri E, Herskowitz M, Ruan C, Li F. Core-Shell Fe 2O 3@La 1-xSr xFeO 3-δ Material for Catalytic Oxidations: Coverage of Iron Oxide Core, Oxygen Storage Capacity and Reactivity of Surface Oxygens. MATERIALS (BASEL, SWITZERLAND) 2021; 14:7355. [PMID: 34885506 PMCID: PMC8658574 DOI: 10.3390/ma14237355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 11/24/2021] [Accepted: 11/26/2021] [Indexed: 11/17/2022]
Abstract
A series of Fe2O3@LSF (La0.8Sr0.2FeO3-δ perovskite) core-shell materials (CSM) was prepared by infiltration of LSF precursors gel containing various complexants and their mixtures to nanocrystalline aggregates of hematite followed by thermal treatment. The content of LSF phase and amount of carboxyl groups in complexant determine the percent coverage of iron oxide core with the LSF shell. The most conformal coating core-shell material was prepared with citric acid as the complexant, contained 60 wt% LSF with 98% core coverage. The morphology of the CSM was studied by HRTEM-EELS combined with SEM-FIB for particles cross-sections. The reactivity of surface oxygen species and their amounts were determined by H2-TPR, TGA-DTG, the oxidation state of surface oxygen ions by XPS. It was found that at complete core coverage with perovskite shell, the distribution of surface oxygen species according to redox reactivity in CSM resemble pure LSF, but its lattice oxygen storage capacity is 2-2.5 times higher. At partial coverage, the distribution of surface oxygen species according to redox reactivity resembles that in iron oxide.
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Affiliation(s)
- Hen Ohayon Dahan
- Chemical Engineering Department, Blechner Center for Industrial Catalysis and Process Development, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel; (H.O.D.); (R.V.N.); (E.E.); (M.H.)
| | - Miron V. Landau
- Chemical Engineering Department, Blechner Center for Industrial Catalysis and Process Development, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel; (H.O.D.); (R.V.N.); (E.E.); (M.H.)
| | - Roxana Vidruk Nehemya
- Chemical Engineering Department, Blechner Center for Industrial Catalysis and Process Development, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel; (H.O.D.); (R.V.N.); (E.E.); (M.H.)
| | - Eran Edri
- Chemical Engineering Department, Blechner Center for Industrial Catalysis and Process Development, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel; (H.O.D.); (R.V.N.); (E.E.); (M.H.)
| | - Moti Herskowitz
- Chemical Engineering Department, Blechner Center for Industrial Catalysis and Process Development, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel; (H.O.D.); (R.V.N.); (E.E.); (M.H.)
| | - Chongyan Ruan
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC 27695-7905, USA; (C.R.); (F.L.)
| | - Fanxing Li
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC 27695-7905, USA; (C.R.); (F.L.)
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17
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Steam reforming for syngas production over Ni and Ni-promoted catalysts. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04493-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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18
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Oscillatory Behaviour of Ni Supported on ZrO 2 in the Catalytic Partial Oxidation of Methane as Determined by Activation Procedure. MATERIALS 2021; 14:ma14102495. [PMID: 34065922 PMCID: PMC8150648 DOI: 10.3390/ma14102495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/04/2021] [Accepted: 05/06/2021] [Indexed: 11/17/2022]
Abstract
Ni/ZrO2 catalysts, active and selective for the catalytic partial oxidation of methane to syngas (CH4-CPO), were prepared by the dry impregnation of zirconium oxyhydroxide (Zhy) or monoclinic ZrO2 (Zm), calcination at 1173 K and activation by different procedures: oxidation-reduction (ox-red) or direct reduction (red). The characterization included XRD, FESEM, in situ FTIR and Raman spectroscopies, TPR, and specific surface area measurements. Catalytic activity experiments were carried out in a flow apparatus with a mixture of CH4:O2 = 2:1 in a short contact time. Compared to Zm, Zhy favoured the formation of smaller NiO particles, implying a higher number of Ni sites strongly interacting with the support. In all the activated Ni/ZrO2 catalysts, the Ni-ZrO2 interaction was strong enough to limit Ni aggregation during the catalytic runs. The catalytic activity depended on the activation procedures; the ox-red treatment yielded very active and stable catalysts, whereas the red treatment yielded catalysts with oscillating activity, ascribed to the formation of Niδ+ carbide-like species. The results suggested that Ni dispersion was not the main factor affecting the activity, and that active sites for CH4-CPO could be Ni species at the boundary of the metal particles in a specific configuration and nuclearity.
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19
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Luo P, Xu Z, Zheng Q, Tan J, Zhang Z, Liu Z, Zhang G, Jin W. Tailoring of a catalyst La 0.8Ce 0.1Ni 0.4Ti 0.6O 3−δ interlayer via in situ exsolution for a catalytic membrane reactor. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00103e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Tailored nickel nanoparticles on La0.8Ce0.1Ni0.4Ti0.6O3−δ surfaces were prepared by in situ exsolution and used in the Ba0.5Sr0.5Co0.8Fe0.2O3−δ catalytic membrane reactor for high-efficient partial oxidation of methane.
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Affiliation(s)
- Ping Luo
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
| | - Zhi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
| | - Qiankun Zheng
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
| | - Jinkun Tan
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
| | - Zhicheng Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
| | - Zhengkun Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
| | - Guangru Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
| | - Wanqin Jin
- State Key Laboratory of Materials-Oriented Chemical Engineering
- College of Chemical Engineering
- Nanjing Tech University
- Nanjing
- PR China
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