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Catalysts
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Advances in Catalysts for Water-Gas Shift Reaction
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Advances in Catalysts for Water-Gas Shift Reaction

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

Deadline for manuscript submissions: closed (15 April 2024) | Viewed by 5281

Special Issue Editors

Prof. Dr. Hyun-Seog Roh

E-Mail Website
Guest Editor
Department of Environmental and Energy Engineering, Yonsei University, 1 Yonseidae-gil, Wonju, Gangwon 26493, Republic of Korea
Interests: catalysts; waste-to-energy; hydrogen; water–gas shift; methane reforming
Special Issues, Collections and Topics in MDPI journals
Dr. Yeol-Lim Lee

E-Mail Website
Guest Editor
Assistant Professor, Department of Chemical Engineering, Keimyung University, 1095 Dalgubeol-daero, Dalseo-gu, Daegu 42601, Republic of Korea
Interests: catalysts; waste-to-energy; hydrogen; water–gas shift; methane reforming

Special Issue Information

Dear Colleagues,

The development of human living standards has unfortunately brought destruction to the earth. Climate change is triggered by the excessive use of fossil fuels. The amount of waste is rapidly increasing due to the use of disposable products, and it has been further increased due to COVID-19. To heal the earth, various attempts are being made based on developments in science and technology. Extensive studies are being carried out for new and renewable energies. Hydrogen (H2) is receiving special attention, and research into upcycling energy resources, including natural gas, coal, waste, biogas, and biomass, has caught the spotlight.

The upcycling of such resources to produce high-value chemicals often requires catalytic reactions, and the water–gas shift reaction (WGS, CO + H2O → CO2 + H2) is one of the most useful catalytic pathways that can upcycle the diverse types of synthesis gas to hydrogen. Currently, the application range for WGS reactions has further expanded to the upcycling of waste, biomass, and coal-derived synthesis gas.

This Special issue covers original research papers, reviews, and commentaries focused on the catalysts for the water–gas shift reaction. Submissions are welcome in the following areas that deal with the water–gas shift reaction: the synthesis, characterization, and application of new catalysts; studies on the activity and stability of the developed catalysts, evaluated by their conversion rate or turnover frequency; the identification of intermediates in the catalytic cycle; techno-economic analysis; or the mechanisms of the catalytic reaction.

Prof. Dr. Hyun-Seog Roh
Dr. Yeol-Lim Lee
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

  • water–gas shift
  • waste-to-energy
  • hydrogen
  • catalyst
  • synthesis gas

Published Papers (3 papers)

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Research

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23 pages, 3768 KiB  
Article
Catalytic Ability of K- and Co-Promoted Oxo-Re and Oxo-ReMo Nanosized Compositions for Water–Gas Shift Reaction
by Dimitrinka Nikolova, Ivan Ivanov, John Vakros, Margarita Gabrovska, Jugoslav Krstić, Peter Tzvetkov, Evangeliya Petrova, Gabriella Zarkova, Tanya Petrova and Tatyana Tabakova
Catalysts 2023, 13(11), 1443; https://doi.org/10.3390/catal13111443 - 15 Nov 2023
Viewed by 939
Abstract
The water–gas shift (WGS) reaction (CO + H2O ↔ CO2 + H2) plays an important role in the hydrogen economy because it is an effective way to reduce the carbon release to net-zero CO2 emissions. The general [...] Read more.
The water–gas shift (WGS) reaction (CO + H2O ↔ CO2 + H2) plays an important role in the hydrogen economy because it is an effective way to reduce the carbon release to net-zero CO2 emissions. The general goal of this research is to develop nanosized oxo-rhenium catalyst formulations promoted by K and Co components for the WGS process. Rhenium, as a low-cost catalyst component, is a good choice compared to platinum group metals. A surface density of 2 Re atoms/nm2 on a γ-Al2O3 support as well as cobalt (3 wt.% CoO) and potassium (5 wt.% K2O) amounts were chosen to match the composition of our own active sour WGS KCoRe catalyst developed some years ago. An initial evaluation of the impact of replacing half of the rhenium with molybdenum, which is more affordable, was also studied. The purpose of this study is to explore the catalytic ability of CoRe, K-CoRe, CoReMo, and K-CoReMo formulations in the WGS reaction and elucidate the effect of a CO/Ar reaction mixture used in an activation–reduction pretreatment to form active catalyst structures. Oxo-K-Co-Re(Mo) entities formed in synthesized samples and their reducibility were analyzed via several physicochemical methods, such as N2 physisorption, PXRD, UV-vis DRS, and H2-TPR. In summary, the selected potassium- and cobalt-promoted Re-containing formulations have potential as catalysts for the classical WGS reaction. The selection of an appropriate procedure for activation–reduction, involving the reducing gas (CO or H2), temperature, and duration, was needed for tuning the K-CoRe catalyst’s high activity for the WGS reaction with structural stability and longevity. Full article
(This article belongs to the Special Issue Advances in Catalysts for Water-Gas Shift Reaction)
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22 pages, 4392 KiB  
Article
Modification of Copper-Ceria Catalyst via Reverse Microemulsion Method and Study of the Effects of Surfactant on WGS Catalyst Activity
by Wathone Oo, Ji Hye Park, Zakia Akter Sonia, May Zaw Win, Dooyong Cho and Kwang Bok Yi
Catalysts 2023, 13(6), 951; https://doi.org/10.3390/catal13060951 - 30 May 2023
Viewed by 1195
Abstract
Some major drawbacks encountered in the synthesis of copper-ceria (Cu-CeO2)-based Water Gas Shift (WGS) catalyst via the conventional Impregnation (IMP) method are aggregate formation and nanoparticles’ instability. These lead to the poor interaction between Copper and Ceria, thereby impeding the catalytic [...] Read more.
Some major drawbacks encountered in the synthesis of copper-ceria (Cu-CeO2)-based Water Gas Shift (WGS) catalyst via the conventional Impregnation (IMP) method are aggregate formation and nanoparticles’ instability. These lead to the poor interaction between Copper and Ceria, thereby impeding the catalytic activity with the inefficient utilization of active sites. To overcome these drawbacks, in this study, we described the synthesis of the Cu-CeO2 catalyst via the Reverse Microemulsion (RME) method with the help of the organic surfactant. This development of insights and strategies resulted in the preparation of porous particles with uniform size distribution and improved interaction within the composites, which were evident through XRD, XPS, BET Surface area, TPR, TEM and SEM analysis results. Remarkably, the optimum 20% Cu-CeO2 catalyst prepared by RME method was found to have superior Water Gas Shift (WGS) catalytic activity than the conventionally Impregnated catalyst when their CO conversion efficiencies were tested in WGS reaction at different feed gas compositions with and without CO2. Moreover, the 20% Cu-CeO2 sample prepared by RME method exhibited sustained catalytic activity throughout the entire 48 h period without any signs of deactivation. This observation highlights RME method as the potential pathway for developing more effective nanoparticle catalysts for hydrogen production, contributing to the growing demand for clean and sustainable energy sources. Full article
(This article belongs to the Special Issue Advances in Catalysts for Water-Gas Shift Reaction)
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Review

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27 pages, 3192 KiB  
Review
Advances in Catalysts for Water–Gas Shift Reaction Using Waste-Derived Synthesis Gas
by Ru-Ri Lee, I-Jeong Jeon, Won-Jun Jang, Hyun-Seog Roh and Jae-Oh Shim
Catalysts 2023, 13(4), 710; https://doi.org/10.3390/catal13040710 - 07 Apr 2023
Cited by 5 | Viewed by 2784
Abstract
Hydrogen is mainly produced by steam reforming of fossil fuels. Thus, research has been continuously conducted to produce hydrogen by replacing fossil fuels. Among various alternative resources, waste is attracting attention as it can produce hydrogen while reducing the amount of landfill and [...] Read more.
Hydrogen is mainly produced by steam reforming of fossil fuels. Thus, research has been continuously conducted to produce hydrogen by replacing fossil fuels. Among various alternative resources, waste is attracting attention as it can produce hydrogen while reducing the amount of landfill and incineration. In order to produce hydrogen from waste, the water–gas shift reaction is one of the essential processes. However, syngas obtained by gasifying waste has a higher CO concentration than syngas produced by steam reforming of fossil fuels, and therefore, it is essential to develop a suitable catalyst. Research on developing a catalyst for producing hydrogen from waste has been conducted for the past decade. This study introduces various catalysts developed and provides basic knowledge necessary for the rational design of catalysts for producing hydrogen from waste-derived syngas. Full article
(This article belongs to the Special Issue Advances in Catalysts for Water-Gas Shift Reaction)
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