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Liu C, Uslamin EA, Pidko EA, Kapteijn F. Revealing Main Reaction Paths to Olefins and Aromatics in Methanol-to-Hydrocarbons over H-ZSM-5 by Isotope Labeling. ACS Catal 2023. [DOI: 10.1021/acscatal.3c00168] [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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2
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Jiang H, Yuan L, Li D, Chen Y. Mathematical Model for the Industrial SMTO Reactor with a SAPO-34 Catalyst. ACS OMEGA 2023; 8:9630-9643. [PMID: 36936341 PMCID: PMC10018698 DOI: 10.1021/acsomega.3c00304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
The methanol-to-olefins (MTO) technology creates a new non-oil route to produce light olefins. This paper reports a 14-lump MTO kinetic model for SAPO-34 catalyst, combined with the hydrodynamic model for the fast fluidized bed reactor of the industrial SMTO process. Selective deactivation is considered to quantify the product selectivity and abrupt catalytic activity change. Moreover, referring to the parallel compartment (PC) model, the activity difference between the circulating spent catalyst and the regenerated catalyst is considered. The validation results with the optimized kinetic parameters showed good agreement between the calculated value and the actual value. Sensitivity analysis of the industrial SMTO process was performed. According to the results, the established mathematical model can provide guidance for industrial production operations.
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Affiliation(s)
- Hongbo Jiang
- Research
Institute of Petroleum Processing, East
China University of Science and Technology, Shanghai 200237, China
| | - Linzhi Yuan
- Research
Institute of Petroleum Processing, East
China University of Science and Technology, Shanghai 200237, China
| | - Defei Li
- Petro-CyberWorks
Information Technology Co., Ltd., Shanghai 200050, China
| | - Yushi Chen
- Petro-CyberWorks
Information Technology Co., Ltd., Shanghai 200050, China
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Li J, Gao M, Yan W, Yu J. Regulation of the Si/Al ratios and Al distributions of zeolites and their impact on properties. Chem Sci 2023; 14:1935-1959. [PMID: 36845940 PMCID: PMC9945477 DOI: 10.1039/d2sc06010h] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/27/2022] [Indexed: 12/29/2022] Open
Abstract
Zeolites are typically a class of crystalline microporous aluminosilicates that are constructed by SiO4 and AlO4 tetrahedra. Because of their unique porous structures, strong Brönsted acidity, molecular-level shape selectivity, exchangeable cations, and high thermal/hydrothermal stability, zeolites are widely used as catalysts, adsorbents, and ion-exchangers in industry. The activity, selectivity, and stability/durability of zeolites in applications are closely related to their Si/Al ratios and Al distributions in the framework. In this review, we discussed the basic principles and the state-of-the-art methodologies for regulating the Si/Al ratios and Al distributions of zeolites, including seed-assisted recipe modification, interzeolite transformation, fluoride media, and usage of organic structure-directing agents (OSDAs), etc. The conventional and newly developed characterization methods for determining the Si/Al ratios and Al distributions were summarized, which include X-ray fluorescence spectroscopy (XRF), solid state 29Si/27Al magic-angle-spinning nuclear magnetic resonance spectroscopy (29Si/27Al MAS NMR), Fourier-transform infrared spectroscopy (FT-IR), etc. The impact of Si/Al ratios and Al distributions on the catalysis, adsorption/separation, and ion-exchange performance of zeolites were subsequently demonstrated. Finally, we presented a perspective on the precise control of the Si/Al ratios and Al distributions of zeolites and the corresponding challenges.
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Affiliation(s)
- Jialiang Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University 2699 Qianjin Street Changchun 130012 China
| | - Mingkun Gao
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University 2699 Qianjin Street Changchun 130012 China
| | - Wenfu Yan
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University 2699 Qianjin Street Changchun 130012 China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University 2699 Qianjin Street Changchun 130012 China .,International Center of Future Science, Jilin University 2699 Qianjin Street Changchun 130012 China
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Park G, Kang J, Park SJ, Kim YT, Kwak G, Kim S. Effect of acid modification of ZSM-5 catalyst on performance and coke formation for methanol-to-hydrocarbon reaction. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Reaction mechanism and kinetic modeling of olefin conversion over phosphorus modified ZSM-5 catalyst. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-021-1016-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Dual-Cycle Mechanism Based Kinetic Model for DME-to-Olefin Synthesis on HZSM-5-Type Catalysts. Catalysts 2021. [DOI: 10.3390/catal11121459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A kinetic model for the olefins synthesis from dimethyl ether on zeolite HZSM-5 based catalysts is developed. The model includes the reaction pathways for the synthesis of olefins from oxygenates in the olefinic and aromatic cycles according to modern concepts of the dual-cycle reaction mechanism. The kinetic parameters were determined for the time-stable hydrothermally treated catalysts of various activities Mg-HZSM-5/Al2O3, HZSM-5/Al2O3, and Zr-HZSM-5/Al2O3. The kinetic parameters determination and the solution of the ordinary differential equations system were carried out in the Python software environment. The preliminary estimation of the kinetic parameters was carried out using the Levenberg-Marquardt algorithm, and the parameters were refined using the genetic algorithm. It is shown that reactions activation energies for different catalysts are close, which indicates that the priority of the reaction paths on the studied catalysts is the same. Thus, the topology of the zeolite plays a leading role in the determination of the synthesis routes, rather than the nature of the modifying metal. The developed model fits the experimental data obtained in an isothermal reactor in the range of temperature 320–360 °C, specified contact time 0.1–3.6 h*gcat/gC with a relative error of less than 15%.
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Facile and Rapid Synthesis of Durable SSZ-13 Catalyst Using Choline Chloride Template for Methanol-to-Olefins Reaction. Catalysts 2021. [DOI: 10.3390/catal11101250] [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
In the current study, a facile and rapid synthesis approach for a SSZ-13 catalyst using choline chloride (CC) as a template was proposed, and the catalytic performance for the methanol-to-olefins (MTO) reaction was examined. With a proper amount of CC addition (i.e., m(CC)/m(SiO2) = 0.14), uniform and homogeneously distributed cubic SSZ-13 crystals were obtained within 4 h with lower aggregation. The synthesized catalyst demonstrated excellent porous features with a total specific surface area and mesopore volume of 641.71 m2·g−1 and 0.04 cm3·g−1, respectively. The optimized strong and weak acid sites on SSZ-13 were obtained by regulating the m(CC)/m(SiO2) ratio. The less strong acid sites and a larger amount of weak acid sites in the synthesized catalyst were conducive to the catalytic performance of the MTO reaction under a lower reaction temperature (450 °C). The appropriate acidity and well-developed pore structure of synthesized SSZ-13 could also slow down the carbon deposition rate and, thus, significantly improve the catalytic lifetime of the catalyst. The methanol conversion rate and initial selectivity of light olefin using the synthesized catalyst could maintain over 95% and 50%, respectively, and a lifetime of 172 min was achieved. Although the low olefin selectivity of the synthesized SSZ-13 catalyst was slightly lower than that of the purchased one, its desirable features were thought to have good potential for industrial application.
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Wang D, Su X, Fan Z, Wen Z, Li N, Yang Y. Recent Advances for Selective Catalysis in Benzene Methylation: Reactions, Shape-Selectivity and Perspectives. CATALYSIS SURVEYS FROM ASIA 2021. [DOI: 10.1007/s10563-021-09337-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Magomedova MV, Afokin MI, Starozhitskaya AV, Galanova EG. Pilot Test of Olefin Synthesis from Dimethyl Ether in a Synthesis Gas Atmosphere. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c00363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria V. Magomedova
- A.V. Topchiev Institute of Petrochemical Synthesis, RAS (TIPS RAS), 29, Leninsky prospekt, Moscow 119991, Russian Federation
| | - Mikhail I. Afokin
- A.V. Topchiev Institute of Petrochemical Synthesis, RAS (TIPS RAS), 29, Leninsky prospekt, Moscow 119991, Russian Federation
| | - Anastasiya V. Starozhitskaya
- A.V. Topchiev Institute of Petrochemical Synthesis, RAS (TIPS RAS), 29, Leninsky prospekt, Moscow 119991, Russian Federation
| | - Ekaterina G. Galanova
- A.V. Topchiev Institute of Petrochemical Synthesis, RAS (TIPS RAS), 29, Leninsky prospekt, Moscow 119991, Russian Federation
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Cordero-Lanzac T, Aguayo AT, Bilbao J. Reactor–Regenerator System for the Dimethyl Ether-to-Olefins Process over HZSM-5 Catalysts: Conceptual Development and Analysis of the Process Variables. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02276] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomás Cordero-Lanzac
- Department of Chemical Engineering, University of the Basque Country (UPV/EHU), P.O. Box 644, 48040 Bilbao, Spain
| | - Andrés T. Aguayo
- Department of Chemical Engineering, University of the Basque Country (UPV/EHU), P.O. Box 644, 48040 Bilbao, Spain
| | - Javier Bilbao
- Department of Chemical Engineering, University of the Basque Country (UPV/EHU), P.O. Box 644, 48040 Bilbao, Spain
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Warnecke F, Lin L, Haag S, Freund H. Identification of Reaction Pathways and Kinetic Modeling of Olefin Interconversion over an H-ZSM-5 Catalyst. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01747] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Felix Warnecke
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik, Cauerstr. 3, 91058 Erlangen, Germany
| | - Lin Lin
- AIR LIQUIDE Forschung und Entwicklung GmbH, Frankfurt Innovation Campus, Gwinnerstraße 27-33, 60388 Frankfurt, Germany
| | - Stéphane Haag
- AIR LIQUIDE Forschung und Entwicklung GmbH, Frankfurt Innovation Campus, Gwinnerstraße 27-33, 60388 Frankfurt, Germany
| | - Hannsjörg Freund
- Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Lehrstuhl für Chemische Reaktionstechnik, Cauerstr. 3, 91058 Erlangen, Germany
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12
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Zhang SH, Wang CM, Zhou XG, Zhu YA. Elucidating the methanol conversion in H-SAPO-5 from first principles: Nature of hydrocarbon pool and scission style. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.110948] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Kiendl I, Schmaderer H, Schödel N, Klein H. Experimentelle und theoretische Betrachtungen der Methanol‐ und direkten DME‐Synthese im Labor‐ und Technikums‐Maßstab. CHEM-ING-TECH 2020. [DOI: 10.1002/cite.201900164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Isabel Kiendl
- Technische Universität München Lehrstuhl für Anlagen und Prozesstechnik Boltzmannstraße 15 85748 Garching Deutschland
- Linde Aktiengesellschaft Dr.-Carl-von-Linde-Straße 6–14 82049 Pullach Deutschland
| | - Harald Schmaderer
- Linde Aktiengesellschaft Dr.-Carl-von-Linde-Straße 6–14 82049 Pullach Deutschland
| | - Nicole Schödel
- Linde Aktiengesellschaft Dr.-Carl-von-Linde-Straße 6–14 82049 Pullach Deutschland
| | - Harald Klein
- Technische Universität München Lehrstuhl für Anlagen und Prozesstechnik Boltzmannstraße 15 85748 Garching Deutschland
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Abstract
The morphology of ZSM-5 zeolite impacts the adsorption, separation and diffusion of molecules. The morphology and textural properties of ZSM-5 zeolites were adjusted by regulating the content of ethanol in the synthesis gel. When the ratio of ethanol/SiO2 was lower than 2, the obtained crystals were isolated particles. With higher ethanol concentration, the chainlike zeolite was generated due to the condensation of terminal Si-OH groups. The crystals stacked more and more compactly with the increase in ethanol concentration, resulting in decreased specific surface area, total volume and mesoporous volume. The crystal size increased gradually with the increase in the ethanol concentration. Moreover, some other small molecular alcohols could also induce the formation of chainlike morphology of ZSM-5.
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Propene Adsorption-Chemisorption Behaviors on H-SAPO-34 Zeolite Catalysts at Different Temperatures. Catalysts 2019. [DOI: 10.3390/catal9110919] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Propene is an important synthetic industrial product predominantly formed by a methanol-to-olefins (MTO) catalytic process. Propene is known to form oligomers on zeolite catalysts, and paramters to separate it from mixtures and its diffusion properties are difficult to measure. Herein, we explored the adsorption–chemisorption behavior of propene by choosing SAPO-34 zeolites with three different degrees of acidity at various adsorption temperatures in an ultra-high-vacuum adsorption system. H-SAPO-34 zeolites were prepared by a hydrothermal method, and their structural, morphological, and acidic properties were investigated by XRD, SEM, EDX, and temperature-programmed desorption of ammonia (NH3-TPD) analysis techniques. The XRD analysis revealed the highly crystalline structure which posses cubic morphology as confirmed by SEM images. The analysis of adsorption of propene on SAPO-34 revealed that a chemical reaction (chemisorption) was observed between zeolite and propene at room temperature (RT) when the concentration of acidic sites was high (0.158 mmol/g). The reaction was negligible when the concentration of the acidic sites was low (0.1 mmol/g) at RT. However, the propene showed no reactivity with the highly acidic SAPO-34 at low temperatures, i.e., −56 °C (using octane + dry ice), −20 °C (using NaCl + ice), and 0 °C (using ice + water). In general, low-temperature conditions were found to be helpful in inhibiting the chemisorption of propene on the highly acidic H-SAPO-34 catalysts, which can facilitate propene separation and allow for reliable monitoring of kinetic parameters.
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Standl S, Kühlewind T, Tonigold M, Hinrichsen O. On Reaction Pathways and Intermediates During Catalytic Olefin Cracking over ZSM-5. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02989] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sebastian Standl
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching Near Munich, Germany
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Straße 1, 85748 Garching Near Munich, Germany
| | - Tobias Kühlewind
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching Near Munich, Germany
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Straße 1, 85748 Garching Near Munich, Germany
| | - Markus Tonigold
- Clariant Produkte (Deutschland) GmbH, Waldheimer Straße 13, 83052 Bruckmühl, Germany
| | - Olaf Hinrichsen
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching Near Munich, Germany
- Catalysis Research Center, Technical University of Munich, Ernst-Otto-Fischer-Straße 1, 85748 Garching Near Munich, Germany
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Zhao Y, Ye Z, Zhang H, Zhang Y, Tang Y. Facile Fabrication and Morphology Regulation of Crossed MFI Zeolite with Improved Performance on LDPE Cracking. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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18
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Multiscale and Innovative Kinetic Approaches in Heterogeneous Catalysis. Catalysts 2019. [DOI: 10.3390/catal9060501] [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
Kinetics and reactor modeling for heterogeneous catalytic reactions are prominent tools for investigating, and understanding, the catalyst functionalities at nanoscale, and related rates of complex reaction networks [...]
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