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Catalysts
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Novel Materials and Reactor Concepts for CO2 Conversion into...
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Novel Materials and Reactor Concepts for CO2 Conversion into Methane, Methanol and DME

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Environmental Catalysis".

Deadline for manuscript submissions: closed (31 August 2021) | Viewed by 6064

Special Issue Editors

Dr. Carlos V. Miguel

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Guest Editor
Fraunhofer Portugal AWAM - Research Center for Smart Agriculture and Water Management, Régia Douro Park - Parque de Ciência e Tecnologia, 5000-033 Vila Real, Portugal
Interests: CO2 capture & utilization; multifunctional reactors; heterogeneous catalysis; membrane and adsorption separation processes; modeling and simulation of chemical reactors
Prof. Dr. Luís M. Madeira

E-Mail Website
Guest Editor
LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
Interests: multifunctional reactors; membrane reactors; hybrid adsorption–reaction processes; CO2 capture and valorization; H2 production and purification
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Alírio E. Rodrigues

E-Mail Website
Guest Editor
Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Department of Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Interests: chemical engineering; bioengineering; materials engineering
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The present Special Issue focuses on CO2 utilization towards the production of methane, methanol, and DME, which can be used for energy production and as intermediates for obtaining other important chemicals. However, such CO2 conversion processes have associated energy and thermodynamic barriers that can be overcome through the development of new catalysts and reactor concepts. Hence, we encourage the submission of manuscripts related to the conversion of CO2 into these chemicals and covering the following topics:

- Catalyst development, screening, and deactivation tests;

- Development of non-conventional catalysts (e.g., dual-function materials, structured catalysts, etc.);

- Multifunctional reactor concepts (e.g., membrane, sorption-enhanced, etc.);

- Determination of reaction kinetics and mechanisms;

- Modeling (lab, pilot, and industrial scale reactors and phenomena at a particle scale). 

Dr. Carlos V. Miguel
Prof. Dr. Luís Madeira
Prof. Alírio E. Rodrigues
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • CO2 conversion
  • heterogeneous catalysis
  • multifunctional catalysts and reactors
  • reaction kinetics
  • modeling and simulation
  • methane
  • methanol
  • DME

Published Papers (2 papers)

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Research

18 pages, 4591 KiB  
Article
Reaction Analyses Based on Quaternary Metal/Metal Oxide Catalyst Testing in Micro-Structured Reactors Using Combinatorial High-Throughput Methods for Power-to-Gas Applications
by Mirko Pfeifer, Thomas Schwarz, Pengfei Cao and Klaus Stöwe
Catalysts 2021, 11(1), 6; https://doi.org/10.3390/catal11010006 - 23 Dec 2020
Cited by 2 | Viewed by 1817
Abstract
To optimize the Sabatier process, quaternary supported catalyst materials are synthesized and tested. The syntheses are performed by the industrially established, reproducible and automated methods of impregnation and sol–gel synthesis. The screening of the 588 quaternary catalysts is carried out in a specially [...] Read more.
To optimize the Sabatier process, quaternary supported catalyst materials are synthesized and tested. The syntheses are performed by the industrially established, reproducible and automated methods of impregnation and sol–gel synthesis. The screening of the 588 quaternary catalysts is carried out in a specially designed 10-fold parallel gas flow micro-structured reactor as wall catalysts in sequential operation mode at a temperature of T = 573 K and a pressure of p = 15 bar. For the description of the activity, the reaction parameters CO2 conversion, CH4 yield, and CH4/CO2 selectivity are used. These are determined by analyses of the gas phase composition using µGC-FID. The catalysts with the highest activities are validated in a micro-structured reactor with similar characteristics as the screening reactor in the temperature range between T = 573–673 K and a pressure of p = 15 bar. Characterization by powder X-ray diffraction, Raman spectra, and scanning transmission electron microscopic images data on the phase and element distribution after calcination and reduction was conducted. Full article
(This article belongs to the Special Issue Novel Materials and Reactor Concepts for CO2 Conversion into Methane, Methanol and DME)
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16 pages, 4784 KiB  
Article
Enhancement of the Direct Synthesis of Dimethyl Ether (DME) from Synthesis Gas by Macro- and Microstructuring of the Catalytic Bed
by Katarzyna Bizon, Krzysztof Skrzypek-Markiewicz and Gaetano Continillo
Catalysts 2020, 10(8), 852; https://doi.org/10.3390/catal10080852 - 01 Aug 2020
Cited by 10 | Viewed by 3419
Abstract
This work reports on a modelling study of the influence of the distribution of metallic and acidic active centers within a catalytic fixed-bed reactor for the direct synthesis of dimethyl ether (DME), conducted to demonstrate the potential of reactor-level and pellet-level structuring of [...] Read more.
This work reports on a modelling study of the influence of the distribution of metallic and acidic active centers within a catalytic fixed-bed reactor for the direct synthesis of dimethyl ether (DME), conducted to demonstrate the potential of reactor-level and pellet-level structuring of catalytic active centers in process integration and intensification. To account for the pellet structure, the analysis was performed with the aid of a heterogeneous model considering both interphase and intrapellet mass transport resistances. The study evaluated, in terms of DME and methanol yield and selectivity, the performance of a tubular reactor loaded with a physical mixture of monofunctional catalyst pellets or structured bifunctional catalyst pellets with different arrangements of the catalytic centers. It was confirmed that bifunctional catalysts overperform significantly a physical mixture of monofunctional particles. Moreover, it was shown that the internal structure of a bifunctional catalyst pellet is an important feature that deserves to be exploited deeper, in view of further intensification of the DME synthesis process to be achieved with a better reactor design. Full article
(This article belongs to the Special Issue Novel Materials and Reactor Concepts for CO2 Conversion into Methane, Methanol and DME)
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