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Liu K, Shoinkhorova T, You X, Gong X, Zhang X, Chung SH, Ruiz-Martínez J, Gascon J, Dutta Chowdhury A. The synergistic interplay of hierarchy, crystal size, and Ga-promotion in the methanol-to-aromatics process over ZSM-5 zeolites. Dalton Trans 2024. [PMID: 38899920 DOI: 10.1039/d4dt00793j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
In the context of advancing social modernization, the projected shortfall in the demand for renewable aromatic hydrocarbons is expected to widen, influenced by industries like high-end materials, pharmaceuticals, and consumer goods. Sustainable methods for aromatic production from alternative sources, particularly the methanol-to-aromatics (MTA) process using zeolite ZSM-5 and associated with the "methanol economy", have garnered widespread attention. To facilitate this transition, our project consolidates conventional strategies that impact aromatics selectivity-such as using hierarchical zeolites, metallic promoters, or altering zeolite physicochemical properties-into a unified study. Our findings demonstrate the beneficial impact of elongated crystal size and heightened zeolite hierarchy on preferential aromatics selectivity, albeit through distinct mechanisms involving the consumption of shorter olefins. While metallic promoters enhance MTA performance, crystal size, and hierarchy remain pivotal in achieving the maximized aromatics selectivity. This study contributes to a deeper understanding of achieving superior aromatics selectivity through physicochemical modifications in zeolite ZSM-5 during MTA catalysis, thereby advancing the field's comprehension of structure-reactivity relationships.
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Affiliation(s)
- Kun Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
| | - Tuiana Shoinkhorova
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Xinyu You
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
| | - Xuan Gong
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Xin Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, PR China.
| | - Sang-Ho Chung
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Javier Ruiz-Martínez
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
| | - Jorge Gascon
- KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
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2
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Tian Y, Gao M, Xie H, Xu S, Ye M, Liu Z. Spatiotemporal Heterogeneity of Temperature and Catalytic Activation within Individual Catalyst Particles. J Am Chem Soc 2024; 146:4958-4972. [PMID: 38334752 DOI: 10.1021/jacs.3c14305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
Temperature is a critical parameter in chemical conversion, significantly affecting the reaction kinetics and thermodynamics. Measuring temperature inside catalyst particles of industrial interest (∼micrometers to millimeters), which is crucial for understanding the evolution of chemical dynamics at catalytic active sites during reaction and advancing catalyst designs, however, remains a big challenge. Here, we propose an approach combining two-photon confocal microscopy and state-of-the-art upconversion luminescence (UL) imaging to measure the spatiotemporal-resolved temperature within individual catalyst particles in the industrially significant methanol-to-hydrocarbons reaction. Specifically, catalyst particles containing zeolites and functional nanothermometers were fabricated using microfluidic chips. Our experimental results directly demonstrate that the zeolite density and particle size can alter the temperature distribution within a single catalyst particle. Importantly, the observed temperature heterogeneity plays a decisive role in the activation of the reaction intermediate and the utilization of active sites. We expect that this work opens a venue for unveiling the reaction mechanism and kinetics within industrial catalyst particles by considering temperature heterogeneity.
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Affiliation(s)
- Yu Tian
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 10049, People's Republic of China
| | - Mingbin Gao
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Hua Xie
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Shuliang Xu
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Mao Ye
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
| | - Zhongmin Liu
- National Engineering Research Center of Lower-Carbon Catalysis Technology, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 10049, People's Republic of China
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3
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You X, Zhang X, Ye Y, Zhou H, Jiang S, Zhou X, Dutta Chowdhury A. Evaluating the efficacy of zeolites synthesized from natural clay for the methanol-to-hydrocarbon process. Dalton Trans 2023; 52:14390-14399. [PMID: 37781869 DOI: 10.1039/d3dt02131a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Introducing sustainability into advanced catalytic material design is essential to address growing environmental concerns. Among them, synthesizing inorganic zeolite materials from non-traditional sources (like natural clay) offers several advantages, contributing to sustainability and environmental stewardship. With this objective, we used kaolin to synthesize zeolites with different topologies: SSZ-13 (8-MR with CHA topology), ZSM-5 (10-MR with MFI topology), and Beta (12-MR with BEA topology) (MR: member ring), where a simple and flexible synthetic protocol was adopted without any significant changes. All these zeolites were subjected to catalytic performance evaluation concerning the industrially relevant methanol-to-hydrocarbon (MTH) process. Herein, the kaolin-derived zeolites, especially ZSM-5, led to superior performance and demonstrated enhanced catalyst deactivation-resistant behavior compared to their zeolite counterparts prepared from traditional synthetic routes. Various characterization tools (including under operando conditions) were employed to understand their reactions and deactivation mechanisms. Overall, making zeolites from non-traditional sources presents a pathway for sustainable and environmentally friendly material production, offering benefits such as reduced resource dependence, lower energy consumption, and tailored physicochemical properties beneficial to catalysis. In a broader context, such a research approach contributes to the transition toward a more sustainable and circular economy.
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Affiliation(s)
- Xinyu You
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Xin Zhang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Yiru Ye
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Hexun Zhou
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Shican Jiang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
| | - Xue Zhou
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, China.
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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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Zapater D, Lasobras J, Soler J, Herguido J, Menéndez M. Comparison of Conventional and Two-Zone Fluidized Bed Reactors for Methanol to Olefins. Effect of Reaction Conditions and the Presence of Water in the Feed. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00323] [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]
Affiliation(s)
- Diego Zapater
- Catalysis, Molecular Separations and Reaction Engineering Group, Department of Chemical and Environmental Engineering, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50018, Spain
- Multiscale Reaction Engineering, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Javier Lasobras
- Catalysis, Molecular Separations and Reaction Engineering Group, Department of Chemical and Environmental Engineering, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50018, Spain
| | - Jaime Soler
- Catalysis, Molecular Separations and Reaction Engineering Group, Department of Chemical and Environmental Engineering, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50018, Spain
| | - Javier Herguido
- Catalysis, Molecular Separations and Reaction Engineering Group, Department of Chemical and Environmental Engineering, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50018, Spain
| | - Miguel Menéndez
- Catalysis, Molecular Separations and Reaction Engineering Group, Department of Chemical and Environmental Engineering, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50018, Spain
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Zhang C, Ng KLA, Yan L, Feng X, Jiang B, Liao Z, Wang J, Yang Y. Kinetic Perspective on Methanol to Propylene Process via HZSM-5 Catalyst: Balancing between Reaction and Diffusion. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04589] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chijin Zhang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Kay Lup Andrew Ng
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor Darul Ehsan Malaysia
| | - Lixia Yan
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Xiang Feng
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Binbo Jiang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Zuwei Liao
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Jingdai Wang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
| | - Yongrong Yang
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
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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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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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9
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Study of Catalyst Coke Distribution Based on Population Balance Theory: Application to Methanol to Olefins Process. AIChE J 2019. [DOI: 10.1002/aic.16518] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kinetic Modeling of Catalytic Olefin Cracking and Methanol-to-Olefins (MTO) over Zeolites: A Review. Catalysts 2018. [DOI: 10.3390/catal8120626] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The increasing demand for lower olefins requires new production routes besides steam cracking and fluid catalytic cracking (FCC). Furthermore, less energy consumption, more flexibility in feed and a higher influence on the product distribution are necessary. In this context, catalytic olefin cracking and methanol-to-olefins (MTO) gain in importance. Here, the undesired higher olefins can be catalytically converted and, for methanol, the possibility of a green synthesis route exists. Kinetic modeling of these processes is a helpful tool in understanding the reactivity and finding optimum operating points; however, it is also challenging because reaction networks for hydrocarbon interconversion are rather complex. This review analyzes different deterministic kinetic models published in the literature since 2000. After a presentation of the underlying chemistry and thermodynamics, the models are compared in terms of catalysts, reaction setups and operating conditions. Furthermore, the modeling methodology is shown; both lumped and microkinetic approaches can be found. Despite ZSM-5 being the most widely used catalyst for these processes, other catalysts such as SAPO-34, SAPO-18 and ZSM-23 are also discussed here. Finally, some general as well as reaction-specific recommendations for future work on modeling of complex reaction networks are given.
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