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Valizadeh S, Khani Y, Farooq A, Kumar G, Show PL, Chen WH, Lee SH, Park YK. Microalgae gasification over Ni loaded perovskites for enhanced biohydrogen generation. BIORESOURCE TECHNOLOGY 2023; 372:128638. [PMID: 36669624 DOI: 10.1016/j.biortech.2023.128638] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/12/2023] [Accepted: 01/15/2023] [Indexed: 06/17/2023]
Abstract
Steam gasification of microalgae upon perovskite oxide-supported nickel (Ni) catalysts was carried out for H2-rich gas production. Ni-perovskite oxide catalysts with partial substitution of B in perovskite structures (Ni/CaZrO3, Ni/Ca(Zr0.8Ti0.2)O3, and Ni/Ca(Zr0.6Ti0.4)O3) were synthesized and compared with those of the Ni/Al2O3 catalyst. The perovskite oxide supports improved Ni dispersion by reducing the particle size and strengthening the Ni-support interaction. Higher gas yields and H2 selectivity were obtained using Ni-perovskite oxide catalysts rather than Ni/Al2O3. In particular, Ni/Ca(Zr0.8Ti0.2)O3 showed the highest activity and selectivity for H2 production because of the synergetic effect of metallic Ni and elements present in the perovskite structures caused by high catalytic activity coupled with enhanced oxygen mobility. Moreover, increasing the temperature promoted the yield of gas and H2 content. Overall, considering the outstanding advantages of perovskite oxides as supports for Ni catalysts is a promising prospect for H2 production via gasification technology.
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Affiliation(s)
- Soheil Valizadeh
- School of Environmental Engineering, University of Seoul, Republic of Korea
| | - Yasin Khani
- School of Environmental Engineering, University of Seoul, Republic of Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, Republic of Korea
| | - Gopalakrishnan Kumar
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Pau Loke Show
- Department of Chemical Engineering, Khalifa University, Shakhbout Bin Sultan St, Zone 1, Abu Dhabi, United Arab Emirates; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan
| | - See Hoon Lee
- Department of Mineral Resources and Energy Engineering, Jeonbuk National University, 54896 Jeonju, Republic of Korea; Department of Environment and Energy, Jeonbuk National University, 567 Jeonju, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, Republic of Korea.
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Valizadeh S, Khani Y, Yim H, Chai S, Chang D, Farooq A, Show PL, Jeon BH, Khan MA, Jung SC, Park YK. H 2 generation from steam gasification of swine manure over nickel-loaded perovskite oxides catalysts. ENVIRONMENTAL RESEARCH 2023; 219:115070. [PMID: 36549497 DOI: 10.1016/j.envres.2022.115070] [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: 10/15/2022] [Revised: 12/11/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
In this study, nickel-loaded perovskite oxides catalysts were synthesized via the impregnation of 10%Ni on XTiO3 (X = Ce, Sr, La, Ba, Ca, and Fe) supports and employed in the catalytic steam gasification of swine manure to produce H2-rich syngas for the first time. The synthesized catalysts were characterized using BET, H2-TPR, XRD, HR-TEM, and EDX analysis. Briefly, using perovskite supports resulted in the production of ultrafine catalyst nanoparticles with a uniform dispersion of Ni particles. According to the catalytic activity test, the gas yield showed the increment as 10% Ni/LaTiO3 < 10% Ni/FeTiO3 < 10% Ni/CeTiO3 < 10% Ni/BaTiO3 < 10% Ni/SrTiO3 < 10% Ni/CaTiO3. Meanwhile, zero coke formation was achieved due to the oxygen mobility of prepared catalysts. Also, the increase in the H2 production for the applied catalysts was in the sequence as 10% Ni/CeTiO3 < 10% Ni/FeTiO3 < 10% Ni/LaTiO3 < 10% Ni/BaTiO3 < 10% Ni/SrTiO3 < 10% Ni/CaTiO3. The maximum H2 selectivity (∼48 vol%) obtained by10% Ni/CaTiO3 was probably due to the synergistic effect of Ni and Ti on enhancing the water-gas shift reaction, and Ca on creating the maximum oxygen mobility compared to other alkaline earth metals doped at the A place of perovskite. Overall, this study provides a suitable solution for enhanced H2 production through steam gasification of swine manure along with suggesting the appropriate supports to prevent Ni deactivation by lowering coke formation at the same time.
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Affiliation(s)
- Soheil Valizadeh
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Yasin Khani
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Hoesuk Yim
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Suhyeong Chai
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Dongwon Chang
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Abid Farooq
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea
| | - Pau-Loke Show
- Department of Chemical and Environmental Engineering, Faculty Science and Engineering, University of Nottingham, Malaysia, 43500 Semenyih, Selangor Darul Ehsan, Malaysia; Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India
| | - Byong-Hun Jeon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Moonis Ali Khan
- Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sang-Chul Jung
- Department of Environmental Engineering, Sunchon National University, 255 Jungang-ro, Sunchon, Jeonnam 57922, Republic of Korea
| | - Young-Kwon Park
- School of Environmental Engineering, University of Seoul, 02504, Republic of Korea.
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Heveling J. La-Doped Alumina, Lanthanum Aluminate, Lanthanum Hexaaluminate, and Related Compounds: A Review Covering Synthesis, Structure, and Practical Importance. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Josef Heveling
- Department of Chemistry, Tshwane University of Technology, Pretoria 0001, South Africa
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4
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Wang J, Cai L, Cao Z, Zhu X, Yang W. Perovskite catalysts for oxidative coupling of methane improved by Y‐doping. ASIA-PAC J CHEM ENG 2022. [DOI: 10.1002/apj.2863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jingyi Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- University of Chinese Academy of Sciences Beijing China
| | - Lili Cai
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
| | - Zhongwei Cao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
| | - Xuefeng Zhu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- University of Chinese Academy of Sciences Beijing China
| | - Weishen Yang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian China
- University of Chinese Academy of Sciences Beijing China
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Metal Ions (Li, Mg, Zn, Ce) Doped into La2O3 Nanorod for Boosting Catalytic Oxidative Coupling of Methane. Catalysts 2022. [DOI: 10.3390/catal12070713] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
A series of La2O3 nanorod catalysts with doping of active metal ions (Li, Mg, Zn and Ce) were synthesized successfully by the hydrothermal method. The La2O3 nanorods show a uniform size with the length of 50–200 nm and the width of 5–20 nm, and the {110} crystal facet is a preferentially exposed surface. The active metal ions (Li, Mg, Zn and Ce) doped into the lattice of La2O3 nanorods enhance the selectivity of the desired products during oxidative coupling of methane (OCM) and decrease the reaction temperature. Among these catalysts, the Mg-La2O3 catalyst exhibits the best catalytic performance during the OCM reaction, i.e., its selectivity and yield of C2 products at 780 °C is 73% and 21%, respectively. The effect of doped metal ions on catalytic activity for OCM was systematically investigated. Insight into the fabrication strategy and promoting factors of the OCM reaction indicates the potential to further design a high-efficient catalyst in the future.
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Progress and Recent Strategies in the Synthesis and Catalytic Applications of Perovskites Based on Lanthanum and Aluminum. MATERIALS 2022; 15:ma15093288. [PMID: 35591622 PMCID: PMC9100353 DOI: 10.3390/ma15093288] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 04/29/2022] [Accepted: 04/29/2022] [Indexed: 11/17/2022]
Abstract
Lanthanum aluminate-based perovskite (LaAlO3) has excellent stability at high temperatures, low toxicity, and high chemical resistance and also offers wide versatility to the substitution of La3+ and Al3+, thus, allowing it to be applied as a catalyst, nano-adsorbent, sensor, and microwave dielectric resonator, amongst other equally important uses. As such, LaAlO3 perovskites have gained importance in recent years. This review considers the extensive literature of the past 10 years on the synthesis and catalytic applications of perovskites based on lanthanum and aluminum (LaAlO3). The aim is, first, to provide an overview of the structure, properties, and classification of perovskites. Secondly, the most recent advances in synthetic methods, such as solid-state methods, solution-mediated methods (co-precipitation, sol–gel, and Pechini synthesis), thermal treatments (combustion, microwave, and freeze drying), and hydrothermal and solvothermal methods, are also discussed. The most recent energetic catalytic applications (the dry and steam reforming of methane; steam reforming of toluene, glycerol, and ethanol; and oxidative coupling of methane, amongst others) using these functional materials are also addressed. Finally, the synthetic challenges, advantages, and limitations associated with the preparation methods and catalytic applications are discussed.
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Nakano N, Torimoto M, Sampei H, Yamashita R, Yamano R, Saegusa K, Motomura A, Nagakawa K, Tsuneki H, Ogo S, Sekine Y. Elucidation of the reaction mechanism on dry reforming of methane in an electric field by in situ DRIFTs. RSC Adv 2022; 12:9036-9043. [PMID: 35424901 PMCID: PMC8985195 DOI: 10.1039/d2ra00402j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 03/14/2022] [Indexed: 01/17/2023] Open
Abstract
With increasing expectations for carbon neutrality, dry reforming is anticipated for direct conversion of methane and carbon dioxide: the main components of biogas. We have found that dry reforming of methane in an electric field using a Pt/CeO2 catalyst proceeds with sufficient rapidity even at a low temperature of about 473 K. The effect of the electric field (EF) on dry reforming was investigated using kinetic analysis, in situ DRIFTs, XPS, and DFT calculation. In situ DRIFTs and XPS measurements indicated that the amount of carbonate, which is an adsorbed species of CO2, increased with the application of EF. XPS measurements also confirmed the reduction of CeO2 by the reaction of surface oxygen and CH4. The reaction between CH4 molecules and surface oxygen was promoted at the interface between Pt and CeO2. In the dry reforming of methane in an electric field, the reaction between CH4 molecules and surface oxygen was promoted at the interface between Pt and CeO2.![]()
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Affiliation(s)
- Naoya Nakano
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Maki Torimoto
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Hiroshi Sampei
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Reiji Yamashita
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Ryota Yamano
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Koki Saegusa
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Ayaka Motomura
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kaho Nagakawa
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Hideaki Tsuneki
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Shuhei Ogo
- Department of Marine Resources Science, Faculty of Agriculture and Marine Science, Kochi University Nankoku 783-8502 Japan.,Center for Advanced Marine Core Research, Kochi University Nankoku 783-8502 Japan
| | - Yasushi Sekine
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
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8
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Oxidative Coupling of Methane for Ethylene Production: Reviewing Kinetic Modelling Approaches, Thermodynamics and Catalysts. Processes (Basel) 2021. [DOI: 10.3390/pr9122196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Ethylene production via oxidative coupling of methane (OCM) represents an interesting route for natural gas upscaling, being the focus of intensive research worldwide. Here, OCM developments are analysed in terms of kinetic mechanisms and respective applications in chemical reactor models, discussing current challenges and directions for further developments. Furthermore, some thermodynamic aspects of the OCM reactions are also revised, providing achievable olefins yields in a wide range of operational reaction conditions. Finally, OCM catalysts are reviewed in terms of respective catalytic performances and thermal stability, providing an executive summary for future studies on OCM economic feasibility.
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9
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Tanaka Y, Murakami K, Doi S, Ito K, Saegusa K, Mizutani Y, Hayashi S, Higo T, Tsuneki H, Nakai H, Sekine Y. Effects of A-site composition of perovskite (Sr 1-x Ba x ZrO 3) oxides on H atom adsorption, migration, and reaction. RSC Adv 2021; 11:7621-7626. [PMID: 35423258 PMCID: PMC8694951 DOI: 10.1039/d1ra00180a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Accepted: 02/08/2021] [Indexed: 11/24/2022] Open
Abstract
Hydrogen (H) atomic migration over a metal oxide is an important surface process in various catalytic reactions. Control of the interaction between H atoms and the oxide surfaces is therefore important for better catalytic performance. For this investigation, we evaluated the adsorption energies of the H atoms over perovskite-type oxides (Sr1-x Ba x ZrO3; 0.00 ≤ x ≤ 0.50) using DFT (Density Functional Theory) calculations, then clarified the effects of cation-substitution in the A-site of perovskite oxides on H atom adsorption, migration, and reaction. Results indicated local distortion at the oxide surface as a key factor governing H atom adsorption. Subtle Ba2+ substitution for Sr2+ sites provoked local distortion at the Sr1-x Ba x ZrO3 oxide surface, which led to a decrement in the H atom adsorption energy. Furthermore, the effect of Sr2+/Ba2+ ratio on the H atoms' reactivities was examined experimentally using a catalytic reaction, which was promoted by activated surface H atoms. Results show that the surface H atoms activated by the substitution of Sr2+ sites with a small amount of Ba2+ (x = 0.125) contributed to enhancement of ammonia synthesis rate in an electric field, which showed good agreement with predictions made using DFT calculations.
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Affiliation(s)
- Yuta Tanaka
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kota Murakami
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Sae Doi
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Kazuharu Ito
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Koki Saegusa
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Yuta Mizutani
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Sasuga Hayashi
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Takuma Higo
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Hideaki Tsuneki
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Hiromi Nakai
- Department of Chemistry and Biochemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Yasushi Sekine
- Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
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10
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Electric heating of the Mo–V–Fe–Nb–O catalyst bed in oxidative dehydrogenation of ethane. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Low-temperature oxidative coupling of methane using alkaline earth metal oxide-supported perovskites. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.11.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Hisai Y, Murakami K, Kamite Y, Ma Q, Vøllestad E, Manabe R, Matsuda T, Ogo S, Norby T, Sekine Y. First observation of surface protonics on SrZrO3 perovskite under a H2 atmosphere. Chem Commun (Camb) 2020; 56:2699-2702. [DOI: 10.1039/c9cc08757e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
This is the first direct observation that surface proton hopping occurs on SrZrO3 perovskite even under a H2 (i.e. dry) atmosphere.
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Affiliation(s)
- Yudai Hisai
- Department of Applied Chemistry
- Waseda University
- Tokyo
- Japan
| | - Kota Murakami
- Department of Applied Chemistry
- Waseda University
- Tokyo
- Japan
| | - Yukiko Kamite
- Department of Applied Chemistry
- Waseda University
- Tokyo
- Japan
| | - Quanbao Ma
- Department of Chemistry
- University of Oslo
- FERMiO
- NO-0349 Oslo
- Norway
| | - Einar Vøllestad
- Department of Chemistry
- University of Oslo
- FERMiO
- NO-0349 Oslo
- Norway
| | - Ryo Manabe
- Department of Applied Chemistry
- Waseda University
- Tokyo
- Japan
| | - Taku Matsuda
- Department of Applied Chemistry
- Waseda University
- Tokyo
- Japan
| | - Shuhei Ogo
- Department of Applied Chemistry
- Waseda University
- Tokyo
- Japan
| | - Truls Norby
- Department of Chemistry
- University of Oslo
- FERMiO
- NO-0349 Oslo
- Norway
| | - Yasushi Sekine
- Department of Applied Chemistry
- Waseda University
- Tokyo
- Japan
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13
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Torimoto M, Murakami K, Sekine Y. Low-Temperature Heterogeneous Catalytic Reaction by Surface Protonics. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190194] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Maki Torimoto
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Kota Murakami
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
| | - Yasushi Sekine
- Department of Applied Chemistry, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
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14
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Han Q, Tanaka A, Matsumoto M, Endo A, Kubota Y, Inagaki S. Conversion of methane to C2 and C3 hydrocarbons over TiO2/ZSM-5 core–shell particles in an electric field. RSC Adv 2019; 9:34793-34803. [PMID: 35530691 PMCID: PMC9073859 DOI: 10.1039/c9ra06927e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Accepted: 10/17/2019] [Indexed: 11/30/2022] Open
Abstract
Catalytic conversion of methane (CH4) to light olefins is motivated by increasing recoverable reserves of methane resources, abundantly available in natural gas, shale gas, and gas hydrates. The development of effective processes for conversion of CH4 to light olefins is still a great challenge. The interface of ZSM-5 zeolite and TiO2 nanoparticles is successfully constructed in their core–shell particles via mechanochemical treatment with high shear stress. The oxidative coupling of methane at a low temperature under application of an electric field may be induced by the O2 activation via electrons running through the surface of TiO2 located at the interface of TiO2 and zeolite particles. Moreover, C3H6 was also produced by the ethylene to propylene (ETP) reaction catalyzed by Brønsted acid sites in the ZSM-5 zeolite within core–shell particles. A TiO2/ZSM-5 composite catalyst efficiently works for the oxidative coupling of methane and the subsequent ethylene-to-propylene reactions in an electric field.![]()
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Affiliation(s)
- Qiao Han
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Atsuhiro Tanaka
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Masayuki Matsumoto
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Akira Endo
- National Institute of Advanced Industrial Science and Technology (AIST)
- Tsukuba
- Japan
| | - Yoshihiro Kubota
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
| | - Satoshi Inagaki
- Division of Materials Science and Chemical Engineering
- Yokohama National University
- Yokohama 240-8501
- Japan
- PRESTO
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