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Catalysts
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Catalyzing the Sustainable Process Paradigm
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Catalyzing the Sustainable Process Paradigm

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalytic Reaction Engineering".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 4159

Special Issue Editors

Prof. Dr. Hugo de Lasa

E-Mail Website
Guest Editor
Chemical Reactor Engineering Centre (CREC), Faculty of Engineering, Western University, London, ON N6A 5B9, Canada
Interests: catalysis; photocatalysis; reaction engineering; fluidized bed reactors
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Carlos Omar Castillo Araiza

E-Mail Website
Guest Editor
Laboratory of Catalytic Reactor Engineering Applied to Chemical and Biological Systems, Department of Process Engineering and Hydraulics, Universidad Autónoma Metropolitana Campus Iztapalapa, CDMX, México
Interests: reaction engineering; transport phenomena; kinetics; selective oxidations

Special Issue Information

Dear Colleagues,

There is an urgent need to develop new green processes that are powered by alternative energies and to improve the current ones in order to make them environmentally viable. To accomplish this, catalytic reaction engineering has a major role to play by contributing to the phenomenologically based reactor models and the kinetics that are required for the successful implementation of these new technologies. In this respect, it is expected that data obtained from strategically designed laboratory-scale studies will provide the required technical knowledge for the scaling up of green process units. It is also anticipated that new industrial-scale catalytic reactors developed with this scaling up approach in mind will have a major impact on hydrogen production, air and water decontamination, CO2 capture, and many other catalytic technologies. It is predicted that this will be carried out with the understanding that energies such as solar and wind are needed to make these new technologies fully sustainable and holistic.

It is with this goal in mind that we are inviting selected participants from three 2024 reputable catalysis conferences to contribute to a Special Issue of the “Catalytic Reaction Engineering” Section of the Catalysts journal, entitled “Catalyzing the Sustainable Process Paradigm”: (a) the 27th Canadian Symposium on Catalysis (CSC 2024) that was  held in Sherbrooke, Quebec (12–15 May 2024), (b) the Chemical Catalyst 2024 5th Global Summit on Catalysis and Chemical Engineering that took place in Berlin, Germany (22–23 July 2024), and (c) the XXIX CICAT-29th Ibero-American Catalysis Congress to be held in Bilbao, Spain (23–27 September 2024).

In summary, this Special Issue of Catalysts aims to provide the most up-to-date findings and advances on these critical technological issues and to disseminate them to the scientific catalytic reaction engineering community.

Prof. Dr. Hugo de Lasa
Prof. Dr. Carlos Omar Castillo Araiza
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 2200 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

  • catalysis
  • photocatalysis
  • reaction engineering
  • heterogenous kinetics and reaction mechanism
  • reactor modeling

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Published Papers (3 papers)

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Research

16 pages, 2806 KiB  
Article
Tuning of Acid/Base Functionalities in the MgAlO System for Ethanol Upgrade to n-Butanol
by Adrian M. Hucal, Wei Tian, Pierre-Christof Ascherl and José E. Herrera
Catalysts 2024, 14(12), 868; https://doi.org/10.3390/catal14120868 - 28 Nov 2024
Viewed by 708
Abstract
Hydrotalcite-derived mixed metal oxides (MgAlO)-based catalysts are used for the catalytic upgrade of ethanol to butanol which adjust the catalyst structure and number of relevant active sites through changes in the Mg/Al ratio. By performing a series of reaction activity tests, kinetic experiments, [...] Read more.
Hydrotalcite-derived mixed metal oxides (MgAlO)-based catalysts are used for the catalytic upgrade of ethanol to butanol which adjust the catalyst structure and number of relevant active sites through changes in the Mg/Al ratio. By performing a series of reaction activity tests, kinetic experiments, FTIR characterization, CO2-TGA analysis, and in situ active center titration, qualitative and quantitative relationships between catalyst structure and catalytic performance are obtained. We found the MgAlO mixed metal oxide system can catalyze the ethanol-to-butanol process through a Guerbet reaction pathway, though the process is kinetically limited. The data suggest that strong basic centers hosted in Mg-O sites are the most catalytically relevant function in the MgAlO material, as they control enolate formation, which is likely the rate limiting step of the aldol condensation stage in the Guerbet reaction. Full article
(This article belongs to the Special Issue Catalyzing the Sustainable Process Paradigm)
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11 pages, 1027 KiB  
Article
Catalytic Valorization of Organic Solid Waste: A Pilot-Scale Run of Sugarcane Bagasse
by Zhaofei Li, Ali Omidkar and Hua Song
Catalysts 2024, 14(9), 568; https://doi.org/10.3390/catal14090568 - 28 Aug 2024
Viewed by 1097
Abstract
Organic solid waste treatment is crucial for enhancing environmental sustainability, promoting economic growth, and improving public health. Following our previous organic solid waste upgrading technique, a further two-step pilot-scale run, using sugarcane bagasse as the feedstock, has been successfully conducted with long-term stability. [...] Read more.
Organic solid waste treatment is crucial for enhancing environmental sustainability, promoting economic growth, and improving public health. Following our previous organic solid waste upgrading technique, a further two-step pilot-scale run, using sugarcane bagasse as the feedstock, has been successfully conducted with long-term stability. Firstly, the sugarcane bagasse was treated under mild conditions (400 °C and 1 bar of CH4), and this catalytic Methanolysis treatment resulted in a bio-oil with a yield of 60.5 wt.%. Following that, it was subjected to a catalytic Methano-Refining process (400 °C and 50 bar of CH4) to achieve high-quality renewable fuel with a liquid yield of 95.0 wt.%. Additionally, this renewable fuel can be regarded as an ideal diesel component with a high cetane number, high heating values, a low freezing point, low density and viscosity, and low oxygen, nitrogen, and sulfur contents. The successful pilot-scale catalytic upgrading of sugarcane bagasse further verified the effectiveness of this methane-assisted organic solid waste upgrading technique and confirmed the high flexibility of this innovative technology for processing a wide spectrum of agricultural and forestry residues. This study will shed light on the further valorization of organic solid waste and other carbonaceous materials. Full article
(This article belongs to the Special Issue Catalyzing the Sustainable Process Paradigm)
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20 pages, 3023 KiB  
Article
A Kinetic Model for Catalytic N-Butane Oxidative Dehydrogenation under Oxygen-Free Reaction Conditions in a Fluidized CREC Riser Simulator
by Abdulhamid Bin Sulayman and Hugo de Lasa
Catalysts 2024, 14(8), 505; https://doi.org/10.3390/catal14080505 - 5 Aug 2024
Cited by 1 | Viewed by 1366
Abstract
This study considers the development of a kinetic model for the n-butane oxidative dehydrogenation (ODH) to C4-olefins using a VOx/MgO−γAl2O3 catalyst. The prepared catalyst contained 5 wt% V on an MgO modified γAl2O3 [...] Read more.
This study considers the development of a kinetic model for the n-butane oxidative dehydrogenation (ODH) to C4-olefins using a VOx/MgO−γAl2O3 catalyst. The prepared catalyst contained 5 wt% V on an MgO modified γAl2O3 support. The developed catalyst exhibited both weak and medium acid sites, as revealed by NH3-temperature-programmed desorption. TPR/TPO analyses also indicated that 73% of the loaded VOx was reducible. Kinetic experiments were conducted in a fluidized CREC Riser Simulator at temperatures ranging from 475–550 °C and residence times of 5–20 s. An optimal C4-olefin selectivity of 86% was achieved at 500 °C and 10 s, with this selectivity then decreasing at higher temperatures and longer residence times. The kinetic model developed involved a Langmuir–Hinshelwood-type of kinetics that incorporated cracking, oxydehydrogenation, and complete oxidation reactions. Model parameters were determined by fitting experimental data with kinetic parameters established with narrow 95% confidence intervals and low cross-correlation. Full article
(This article belongs to the Special Issue Catalyzing the Sustainable Process Paradigm)
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