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Cordero-Lanzac T, Capel Berdiell I, Airi A, Chung SH, Mancuso JL, Redekop EA, Fabris C, Figueroa-Quintero L, Navarro de Miguel JC, Narciso J, Ramos-Fernandez EV, Svelle S, Van Speybroeck V, Ruiz-Martínez J, Bordiga S, Olsbye U. Transitioning from Methanol to Olefins (MTO) toward a Tandem CO 2 Hydrogenation Process: On the Role and Fate of Heteroatoms (Mg, Si) in MAPO-18 Zeotypes. JACS AU 2024; 4:744-759. [PMID: 38425934 PMCID: PMC10900493 DOI: 10.1021/jacsau.3c00768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/26/2024] [Accepted: 01/26/2024] [Indexed: 03/02/2024]
Abstract
The tandem CO2 hydrogenation to hydrocarbons over mixed metal oxide/zeolite catalysts (OXZEO) is an efficient way of producing value-added hydrocarbons (platform chemicals and fuels) directly from CO2via methanol intermediate in a single reactor. In this contribution, two MAPO-18 zeotypes (M = Mg, Si) were tested and their performance was compared under methanol-to-olefins (MTO) conditions (350 °C, PCH3OH = 0.04 bar, 6.5 gCH3OH h-1 g-1), methanol/CO/H2 cofeed conditions (350 °C, PCH3OH/PCO/PH2 = 1:7.3:21.7 bar, 2.5 gCH3OH h-1 g-1), and tandem CO2 hydrogenation-to-olefin conditions (350 °C, PCO2/PH2 = 7.5:22.5 bar, 1.4-12.0 gMAPO-18 h molCO2-1). In the latter case, the zeotypes were mixed with a fixed amount of ZnO:ZrO2 catalyst, well-known for the conversion of CO2/H2 to methanol. Focus was set on the methanol conversion activity, product selectivity, and performance stability with time-on-stream. In situ and ex situ Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), solid-state nuclear magnetic resonance (NMR), sorption experiments, and ab initio molecular dynamics (AIMD) calculations were performed to correlate material performance with material characteristics. The catalytic tests demonstrated the better performance of MgAPO-18 versus SAPO-18 at MTO conditions, the much superior performance of MgAPO-18 under methanol/CO/H2 cofeeds, and yet the increasingly similar performance of the two materials under tandem conditions upon increasing the zeotype-to-oxide ratio in the tandem catalyst bed. In situ FT-IR measurements coupled with AIMD calculations revealed differences in the MTO initiation mechanism between the two materials. SAPO-18 promoted initial CO2 formation, indicative of a formaldehyde-based decarboxylation mechanism, while CO and ketene were the main constituents of the initiation pool in MgAPO-18, suggesting a decarbonylation mechanism. Under tandem CO2 hydrogenation conditions, the presence of high water concentrations and low methanol partial pressure in the reaction medium led to lower, and increasingly similar, methanol turnover frequencies for the zeotypes. Despite both MAPO-18 zeotypes showing signs of activity loss upon storage due to the interaction of the sites with ambient humidity, they presented a remarkable stability after reaching steady state under tandem reaction conditions and after steaming and regeneration cycles at high temperatures. Water adsorption experiments at room temperature confirmed this observation. The faster activity loss observed in the Mg version is assigned to its harder Mg2+-ion character and the higher concentration of CHA defects in the AEI structure, identified by solid-state NMR and XRD. The low stability of a MgAPO-34 zeotype (CHA structure) upon storage corroborated the relationship between CHA defects and instability.
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Affiliation(s)
- Tomás Cordero-Lanzac
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Izar Capel Berdiell
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Alessia Airi
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Sang-Ho Chung
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Jenna L. Mancuso
- Center
for Molecular Modeling, Ghent University, Technologiepark 46, B-9052 Zwijnaarde, Belgium
| | - Evgeniy A. Redekop
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Claudia Fabris
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | - Leidy Figueroa-Quintero
- Inorganic
Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University
of Alicante, Apartado 99, Alicante 03080, Spain
| | - Juan C. Navarro de Miguel
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Javier Narciso
- Inorganic
Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University
of Alicante, Apartado 99, Alicante 03080, Spain
| | - Enrique V. Ramos-Fernandez
- Inorganic
Chemistry Department, Laboratory of Advanced Materials, University Materials Institute of Alicante, University
of Alicante, Apartado 99, Alicante 03080, Spain
| | - Stian Svelle
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
| | | | - Javier Ruiz-Martínez
- KAUST
Catalysis Center (KCC), King Abdullah University
of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Silvia Bordiga
- Department
of Chemistry, NIS Center and INSTM Reference Center, University of Turin, Turin 10125, Italy
| | - Unni Olsbye
- Department
of Chemistry, SMN Centre for Materials Science and Nanotechnology, University of Oslo, 0371 Oslo, Norway
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Xie J, Olsbye U. The Oxygenate-Mediated Conversion of CO x to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis. Chem Rev 2023; 123:11775-11816. [PMID: 37769023 PMCID: PMC10603784 DOI: 10.1021/acs.chemrev.3c00058] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Indexed: 09/30/2023]
Abstract
Decentralized chemical plants close to circular carbon sources will play an important role in shaping the postfossil society. This scenario calls for carbon technologies which valorize CO2 and CO with renewable H2 and utilize process intensification approaches. The single-reactor tandem reaction approach to convert COx to hydrocarbons via oxygenate intermediates offers clear benefits in terms of improved thermodynamics and energy efficiency. Simultaneously, challenges and complexity in terms of catalyst material and mechanism, reactor, and process gaps have to be addressed. While the separate processes, namely methanol synthesis and methanol to hydrocarbons, are commercialized and extensively discussed, this review focuses on the zeolite/zeotype function in the oxygenate-mediated conversion of COx to hydrocarbons. Use of shape-selective zeolite/zeotype catalysts enables the selective production of fuel components as well as key intermediates for the chemical industry, such as BTX, gasoline, light olefins, and C3+ alkanes. In contrast to the separate processes which use methanol as a platform, this review examines the potential of methanol, dimethyl ether, and ketene as possible oxygenate intermediates in separate chapters. We explore the connection between literature on the individual reactions for converting oxygenates and the tandem reaction, so as to identify transferable knowledge from the individual processes which could drive progress in the intensification of the tandem process. This encompasses a multiscale approach, from molecule (mechanism, oxygenate molecule), to catalyst, to reactor configuration, and finally to process level. Finally, we present our perspectives on related emerging technologies, outstanding challenges, and potential directions for future research.
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Affiliation(s)
- Jingxiu Xie
- SMN
Centre for Materials Science and Nanotechnology, Department of Chemistry, University of Oslo, Sem Sælands vei 26, 0315 Oslo, Norway
- Green
Chemical Reaction Engineering, Engineering and Technology Institute
Groningen, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Yang L, Wang C, Zhang L, Dai W, Chu Y, Xu J, Wu G, Gao M, Liu W, Xu Z, Wang P, Guan N, Dyballa M, Ye M, Deng F, Fan W, Li L. Stabilizing the framework of SAPO-34 zeolite toward long-term methanol-to-olefins conversion. Nat Commun 2021; 12:4661. [PMID: 34341350 PMCID: PMC8329068 DOI: 10.1038/s41467-021-24403-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 06/15/2021] [Indexed: 11/20/2022] Open
Abstract
As a commercial MTO catalyst, SAPO-34 zeolite exhibits excellent recyclability probably due to its intrinsic good hydrothermal stability. However, the structural dynamic changes of SAPO-34 catalyst induced by hydrocarbon pool (HP) species and the water formed during the MTO conversion as well as its long-term stability after continuous regenerations are rarely investigated and poorly understood. Herein, the dynamic changes of SAPO-34 framework during the MTO conversion were identified by 1D 27Al, 31P MAS NMR, and 2D 31P-27Al HETCOR NMR spectroscopy. The breakage of T-O-T bonds in SAPO-34 catalyst during long-term continuous regenerations in the MTO conversion could be efficiently suppressed by pre-coking. The combination of catalyst pre-coking and water co-feeding is established to be an efficient strategy to promote the catalytic efficiency and long-term stability of SAPO-34 catalysts in the commercial MTO processes, also sheds light on the development of other high stable zeolite catalyst in the commercial catalysis. Stability of zeolite catalysts is a highly desirable property for commercial methanol to olefins conversion but extremely challenging to achieve. Here, the authors combine the catalyst pre-coking and water co-feeding to develop an efficient strategy to enhance the long-term stability of SAPO-34 catalyst.
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Affiliation(s)
- Liu Yang
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tianjin, P.R. China
| | - Chang Wang
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tianjin, P.R. China
| | - Lina Zhang
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tianjin, P.R. China
| | - Weili Dai
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tianjin, P.R. China. .,Key Laboratory of Advanced Energy Materials Chemistry of the Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, P.R. China.
| | - Yueying Chu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, P. R. China
| | - Jun Xu
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, P. R. China
| | - Guangjun Wu
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tianjin, P.R. China
| | - Mingbin Gao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
| | - Wenjuan Liu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
| | - Zhaochao Xu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
| | - Pengfei Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi, P. R. China
| | - Naijia Guan
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tianjin, P.R. China.,Key Laboratory of Advanced Energy Materials Chemistry of the Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, P.R. China
| | - Michael Dyballa
- Institute of Chemical Technology, University of Stuttgart, Stuttgart, Germany
| | - Mao Ye
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, P. R. China
| | - Feng Deng
- National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Key Laboratory of Magnetic Resonance in Biological Systems, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, P. R. China
| | - Weibin Fan
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi, P. R. China
| | - Landong Li
- School of Materials Science and Engineering, and National Institute for Advanced Materials, Nankai University, Tianjin, P.R. China.,Key Laboratory of Advanced Energy Materials Chemistry of the Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, P.R. China
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