A novel microwave-assisted methanol-to-hydrocarbons process with a structured ZSM-5/SiC foam catalyst: Proof-of-concept and environmental impacts

Ou, Xiaoxia; Tomatis, Marco; Lan, Yongyong; Jiao, Yilai; Chen, Yipei; Zheng, Gengfeng; Gao, Xin; Wu, Tao; Wu, Chunfei; Shi, Kaiqi; Azapagic, Adisa; Fan, Xiaolei

doi:10.1016/j.ces.2022.117669

Cited by 13 publications

(4 citation statements)

References 70 publications

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“…Studies of the effect of CO 2 , CO, H 2 , and H 2 O concentration on process thermodynamics and kinetics is recommended, in particular for the less-explored oxygenate intermediates (DME and C 2 ). Two temperature zones in a single reactor with a first temperature zone for DME synthesis and a second temperature zone for DME conversion to hydrocarbons is an interesting opportunity. The dual- versus single-reactor tandem options should be compared. Alternative heating methods may be worthy of consideration. − …”

Section: Discussionmentioning

confidence: 99%

The Oxygenate-Mediated Conversion of CO_x to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis

Xie,

Olsbye

2023

Chem. Rev.

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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 CO 2 and CO with renewable H 2 and utilize process intensification approaches. The single-reactor tandem reaction approach to convert CO x 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 CO x 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 C 3+ 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. CONTENTS 1. Introduction 11775 2. Methanol-Mediated CO x Conversion to Hydrocarbons 11783 2.1. A Short Introduction to the MTH Process 11783 2.2. Integration of the MTH Reactions with CO x Hydrogenation 11787 3. Dimethyl-Ether-Mediated CO x Conversion to Hydrocarbons 11791 3.1. Dimethyl Ether to Hydrocarbons (DTH) 11791 3.2. Methanol to Dimethyl Ether (MTD) 11793 3.3. Integration of the MTD and DTH Reactions with CO x Hydrogenation 11794 4. Ketene-Mediated CO x Conversion to Hydrocarbons 11798 4.1. Methanol Carbonylation 11798 4.2. DME Carbonylation 11799 4.3. Integration of Methanol and DME Carbonylation with CO x Hydrogenation 11803 5.

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Section: Discussionmentioning

confidence: 99%

The Oxygenate-Mediated Conversion of CO_x to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis

Xie,

Olsbye

2023

Chem. Rev.

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“…Moreover, the number of mesh elements needed to obtain completely mesh-independent results was too large to be considered in the workstation (16 core Intel Xeon Gold 6226R processor with 128 GB RAM) used. The maximum number of mesh elements that could be used was (10 ) 6 . The mesh independence results are shown in Figure S8.…”

Section: Case Ii: Steady-state Microwave Heating Of Monolithsmentioning

confidence: 99%

“…Microwave-assisted process intensification − primarily relies on the unique temperature profile obtained in multiphase reactors. Controlling the temperature distribution in microwave-heated reactors is a key to optimizing them .…”

Section: Introductionmentioning

confidence: 99%

A Computationally Fast Method to Simulate Microwave-Heated Monoliths

Parmar

Kavale

Goyal

2023

Ind. Eng. Chem. Res.

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Microwave-assisted process intensification is a promising technique hindered by the unavailability of design rules for optimization and scale-up. High-throughput computational models allowing the exploration of a vast design space are imperative for the rapid development and deployment of intensified microwave reactors. Recently, structured reactors, especially monoliths, are emerging as a canonical multiphase reactor setup in the microwave-heating community. The vast separation of scales in these reactors leads to a large number of mesh elements, making the simulations time-consuming and challenging to converge. To this end, we employ volume and asymptotic averaging to represent monoliths, a multiphase system consisting of a fluid and a solid phase, as a continuum or effective medium. We rigorously verify the adequacy of the averaging techniques to predict the spatiotemporal distribution of the electric field, electromagnetic power dissipation, and temperature against fully resolved monolith simulations. The developed continuum model can replicate the three-dimensional transient behavior obtained from the multiphase simulations with an order of magnitude lower computational expense. Moreover, the continuum model allows easier mesh generation and convergence of numerical solution than the multiphase model. The developed multiscale framework can be used to simulate microwave-heated monoliths and other multiphase reactors, such as packed beds and open-cell foams.

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“…Cobalt oxide is an brillian catalyst for numerous catalytic applications, such as hydrolysis, oxidation and dihydrogen, due to its unique properties, such as high reducibility, abundant surface oxygen species, and multiple oxidation states [17,18]. Silicon carbide (SiC), as a new catalyst carrier with microwave-absorption capacity, has been attempted to be used in various reactions, such as fast pyrolysis [19], bio-oil upgrading [20], methane conversion [21], desulphurization [22], etc.…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted Isopropanol-to-Propylene Process with A Structured Co3O4@silicalite-1/SiC Foam Catalyst

Jianwen¹,

Zhang²,

Wang³

et al. 2023

Preprint

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Microwave has a significant promotion effect in gas-solid phase catalysis due to its unque advantages of heating process. This study introduces an innovative approach that combines microwave irradiation with a structured foam catalyst, Co3O4@S1/SiC, to enhance the isopropanol-to-propylene (ITP) process. The effectiveness of Co3O4@S1/SiC foam was investigated under various reaction temperatures (50-200 °C) and space velocities (1200 h -1 ), in comparison to Co3O4@S1/SiC pellets. The Co3O4@S1/SiC foam exhibited superior performance, achieving a higher selectivity towards propylene (approximately 99%) compared to Co3O4@S1/SiC pellets (93%). This enhancement can be attributed to improved mass and heat transfers facilitated by the foam structure. Co3O4@S1/SiC foam for ITP process has a milder condition with microwave irradiation (121 °C for 90% conversion) than conventional heating (184 °C for 90% conversion).

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A novel microwave-assisted methanol-to-hydrocarbons process with a structured ZSM-5/SiC foam catalyst: Proof-of-concept and environmental impacts

Cited by 13 publications

References 70 publications

The Oxygenate-Mediated Conversion of CO_x to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis

The Oxygenate-Mediated Conversion of CO_x to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis

A Computationally Fast Method to Simulate Microwave-Heated Monoliths

Microwave-assisted Isopropanol-to-Propylene Process with A Structured Co3O4@silicalite-1/SiC Foam Catalyst

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A novel microwave-assisted methanol-to-hydrocarbons process with a structured ZSM-5/SiC foam catalyst: Proof-of-concept and environmental impacts

Cited by 13 publications

References 70 publications

The Oxygenate-Mediated Conversion of COx to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis

The Oxygenate-Mediated Conversion of COx to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis

A Computationally Fast Method to Simulate Microwave-Heated Monoliths

Microwave-assisted Isopropanol-to-Propylene Process with A Structured Co3O4@silicalite-1/SiC Foam Catalyst

Contact Info

Product

Resources

About

The Oxygenate-Mediated Conversion of CO_x to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis

The Oxygenate-Mediated Conversion of CO_x to Hydrocarbons─On the Role of Zeolites in Tandem Catalysis