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Hu P, Hu J, Zhu M, Xiong C, Krishna R, Zhao D, Ji H. Induced-Fit-Identification in a Rigid Metal-Organic Framework for ppm-Level CO 2 Removal and Ultra-Pure CO Enrichment. Angew Chem Int Ed Engl 2023; 62:e202305944. [PMID: 37311714 DOI: 10.1002/anie.202305944] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/12/2023] [Accepted: 06/13/2023] [Indexed: 06/15/2023]
Abstract
Removing CO2 from crude syngas via physical adsorption is an effective method to yield eligible syngas. However, the bottleneck in trapping ppm-level CO2 and improving CO purity at higher working temperatures are major challenges. Here we report a thermoresponsive metal-organic framework (1 a-apz), assembled by rigid Mg2 (dobdc) (1 a) and aminopyrazine (apz), which not only affords an ultra-high CO2 capacity (145.0/197.6 cm3 g-1 (0.01/0.1 bar) at 298 K) but also produces ultra-pure CO (purity ≥99.99 %) at a practical ambient temperature (TA ). Several characterization results, including variable-temperature tests, in situ high-resolution synchrotron X-ray diffraction (HR-SXRD), and simulations, explicitly unravel that the excellent property is attributed to the induced-fit-identification in 1 a-apz that comprises self-adaption of apz, multiple binding sites, and complementary electrostatic potential (ESP). Breakthrough tests suggest that 1 a-apz can remove CO2 from 1/99 CO2 /CO mixtures at practical 348 K, yielding 70.5 L kg-1 of CO with ultra-high purity of ≥99.99 %. The excellent separation performance is also revealed by separating crude syngas that contains quinary mixtures of H2 /N2 /CH4 /CO/CO2 (46/18.3/2.4/32.3/1, v/v/v/v/v).
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Affiliation(s)
- Peng Hu
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
| | - Jialang Hu
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
| | - Min Zhu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
| | - Chao Xiong
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
| | - Rajamani Krishna
- Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Dan Zhao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
| | - Hongbing Ji
- Fine Chemical Industry Research Institute, School of Chemistry, Sun Yat-Sen University, 510275, Guangzhou, P. R. China
- State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Institute of Green Petroleum Processing and Light Hydrocarbon Conversion, College of Chemical Engineering, Zhejiang University of Technology, 310014, Hangzhou, P. R. China
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2
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Kull T, Wiesmann T, Wilmsen A, Purcel M, Muhler M, Lohmann H, Zeidler-Fandrich B, Apfel UP. Influence of the ZnCrAl Oxide Composition on the Formation of Hydrocarbons from Syngas. ACS OMEGA 2022; 7:42994-43005. [PMID: 36467945 PMCID: PMC9713791 DOI: 10.1021/acsomega.2c05225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 10/13/2022] [Indexed: 06/17/2023]
Abstract
The conversion of syngas into value-added hydrocarbons gains increasing attention due to its potential to produce sustainable platform chemicals from simple starting materials. Along this line, the "OX-ZEO" process that combines a methanol synthesis catalyst with a zeolite, capable of catalyzing the methanol-to-hydrocarbon reaction, was found to be a suitable alternative to the classical Fischer-Tropsch synthesis. Hitherto, understanding the mechanism of the OX-ZEO process and simultaneously optimizing the CO conversion and the selectivity toward a specific hydrocarbon remains challenging. Herein, we present a comparison of a variety of ZnCrAl oxides with different metal ratios combined with a H-ZSM-5 zeolite for the conversion of syngas to hydrocarbons. The effect of aluminum on the catalytic activity was investigated for ZnCrAl oxides with a Zn/Cr ratio of 4:1, 1:1, and 1:2. The product distribution and CO conversion were found to be strongly influenced by the Zn/Cr/Al ratio. Although a ratio of Zn/Cr of 1:2 was best to produce lower olefins and aromatics, with aromatic selectivities of up to 37%, catalysts with a 4:1 ratio revealed high paraffin selectivity up to 52%. Notably, a distinct effect of aluminum in the oxide lattice on the catalytic activity and product selectivity was observed, as a higher Al content leads to a lower CO conversion and a changed product spectrum. We provide additional understanding of the influence of different compositions of ZnCrAl oxides on their surface properties and the catalytic activity in the OX-ZEO process. Furthermore, the variation of the zeolite component supports the important role of the channel topology of the porous support material for the hydrocarbon production. In addition, variation of the gas hourly space velocity showed a correlation of contact time, CO conversion, and hydrocarbon selectivity. At a gas hourly space velocity of 4200 mL/gcat h, CO conversion as high as 44% along with a CO2 selectivity of 42% and a lower paraffin (C2 0-C4 0) selectivity of 41% was observed.
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Affiliation(s)
- Tobias Kull
- Inorganic
Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum, Germany
| | - Thomas Wiesmann
- Fraunhofer
UMSICHT, Osterfelder
Straße 3, D-46047 Oberhausen, Germany
| | - Andrea Wilmsen
- Fraunhofer
UMSICHT, Osterfelder
Straße 3, D-46047 Oberhausen, Germany
| | - Maximilian Purcel
- Laboratory
of Industrial Chemistry, Ruhr-Universität
Bochum, Universitätsstraße
150, D-44780 Bochum, Germany
| | - Martin Muhler
- Laboratory
of Industrial Chemistry, Ruhr-Universität
Bochum, Universitätsstraße
150, D-44780 Bochum, Germany
| | - Heiko Lohmann
- Fraunhofer
UMSICHT, Osterfelder
Straße 3, D-46047 Oberhausen, Germany
| | | | - Ulf-Peter Apfel
- Inorganic
Chemistry I, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum, Germany
- Fraunhofer
UMSICHT, Osterfelder
Straße 3, D-46047 Oberhausen, Germany
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Meng F, Liang X, Wang L, Yang G, Huang X, Li Z. Rational Design of SAPO-34 Zeolite in Bifunctional Catalysts for Syngas Conversion into Light Olefins. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01111] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fanhui Meng
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, P. R. China
| | - Xiaotong Liang
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, P. R. China
| | - Lina Wang
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, P. R. China
| | - Guinan Yang
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, P. R. China
| | - Xiaoyang Huang
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park
Place, Cardiff CF10 3AT, U.K
| | - Zhong Li
- State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, Shanxi, P. R. China
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Coudercy C, L'hospital V, Checa R, Le Valant A, Afanasiev P, Loridant S. On the reaction mechanism of MnO x/SAPO-34 bifunctional catalysts for the conversion of syngas to light olefins. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01673c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Methanol is a key reaction intermediate formed on MnOx that synergistically reacts with SAPO-34 to produce light olefins.
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Affiliation(s)
- Christophe Coudercy
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
| | - Valentin L'hospital
- IC2MP, UMR 7285 CNRS, Université de Poitiers, 4 Rue Michel Brunet, F-86022 Poitiers Cedex, France
| | - Ruben Checa
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
| | - Anthony Le Valant
- IC2MP, UMR 7285 CNRS, Université de Poitiers, 4 Rue Michel Brunet, F-86022 Poitiers Cedex, France
| | - Pavel Afanasiev
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
| | - Stéphane Loridant
- Univ Lyon, CNRS, Université Claude Bernard-Lyon 1, IRCELYON-UMR 5256, 2 avenue A. Einstein, F-69626 Villeurbanne Cedex, France
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