Special Issue "Catalysts for Water-Gas Shift Reaction"

A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: 29 February 2020.

Special Issue Editors

Guest Editor
Prof. Dr. Panagiotis G. Smirniotis Website E-Mail
Chemical Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221-0012, USA
Interests: use of molecular sieves as catalysts for refining applications; synthesis of smart materials; removal of nox and sox from mobile and stationary applications; photocatalytic decontamination of gaseous and aqueous streams from toxic organics; production of hydrogen; removal of carbon dioxide from high temperature processes; separations of biomolecules with molecular sieves-based processes
Guest Editor
Dr. Devaiah Damma Website E-Mail
Chemical Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221-0012, USA
Interests: nano materials synthesis; heterogeneous catalysis; catalytic oxidation of air pollutants; hydrogen production; catalytic abatement of nox; oxygenates from syngas; photocatalysis
Guest Editor
Prof. Dr. Sibudjing Kawi Website E-Mail
Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore City, Singapore
Interests: Catalysts, CO2 Utilization, Gasification, Membranes, Hydrogen Production
Guest Editor
Dr. Minghui Zhu Website E-Mail
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
Interests: heterogeneous catalysis, electrocatalysis, in situ spectroscopy

Special Issue Information

Dear Colleagues,

The majority of industrial H2 is currently produced by methane steaming reforming (MSR) followed by water-gas shift (WGS) reaction to control the H2/CO ratio and is employed in numerous applications such as ammonia synthesis, methanol synthesis, synthetic fuels, etc. Although there is much interest in developing sustainable H2 production from photocatalytic/electrocatalytic splitting of H2O and biomass reforming, production of H2 from fossil fuels (CH4, hydrocarbons and coal) will be around and expand for quite some time given its established technology and cost competitiveness. Currently, the WGS reaction is commercially performed in several stages with different catalysts to optimize the greater CO equilibrium conversion attained at lower temperatures because the reaction is exothermic and reversible. Commercially, the low-temperature WGS (LT-WGS) reaction is performed at ∼190−250 °C with a Cu/ZnO/Al2O3 catalyst, and the high-temperature WGS (HT- WGS) reaction is performed at ∼350−450 °C with a Cu promoted chromium-iron mixed oxide catalyst. There are also a variety of noble metal catalysts being developed and exhibit outstanding activity at low temperatures. The present special issue aims to cover recent research progress on water-gas shift catalysts for various temperature ranges.

Prof. Dr. Panagiotis G. Smirniotis
Dr. Devaiah Damma
Prof. Dr. Sibudjing Kawi
Dr. Minghui Zhu
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 papers will be 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 1600 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
  • hydrogen
  • carbon monoxide
  • characterization
  • mechanism
  • kinetics
  • surface science

Published Papers (1 paper)

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Research

Open AccessArticle
Promotional Effect of Gold on the WGS Activity of Alumina-Supported Copper-Manganese Mixed Oxides
Catalysts 2018, 8(11), 563; https://doi.org/10.3390/catal8110563 - 20 Nov 2018
Cited by 2
Abstract
The water-gas shift (WGS) reaction is a well-known industrial process used for the production of hydrogen. During the last few decades, it has attracted renewed attention due to the need for high-purity hydrogen for fuel-cell processing systems. The aim of the present study [...] Read more.
The water-gas shift (WGS) reaction is a well-known industrial process used for the production of hydrogen. During the last few decades, it has attracted renewed attention due to the need for high-purity hydrogen for fuel-cell processing systems. The aim of the present study was to develop a cost-effective and catalytically efficient formulation that combined the advantageous properties of transition metal oxides and gold nanoparticles. Alumina-supported copper- manganese mixed oxides were prepared by wet impregnation. The deposition-precipitation method was used for the synthesis of gold catalysts. The effect of the Cu:Mn molar ratio and the role of Au addition on the WGS reaction’s performance was evaluated. Considerable emphasis was put on the characterization of the as-prepared and WGS-tested samples by means of a number of physicochemical methods (X-ray powder diffraction, high-resolution transmission electron microscopy, electron paramagnetic resonance, X-ray photoelectron spectroscopy, and temperature-programmed reduction) in order to explain the relationship between the structure and the reductive and WGS behavior. Catalytic tests revealed the promotional effect of gold addition. The best performance of the gold-promoted sample with a higher Cu content, i.e., a Cu:Mn molar ratio of 2:1 might be related to the beneficial role of Au on the spinel decomposition and the highly dispersed copper particle formation during the reaction, thus, ensuring the presence of two highly dispersed active metallic phases. High-surface-area alumina that was modified with a surface fraction of Cu–Mn mixed oxides favored the stabilization of finely dispersed gold particles. These new catalytic systems are very promising for practical applications due to their economic viability because the composition mainly includes alumina (80%). Full article
(This article belongs to the Special Issue Catalysts for Water-Gas Shift Reaction)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Fe-Ce supported NiSn catalysts for the high-temperature water-gas shift reaction
Authors: Devaiah Damma and Panagiotis G. Smirniotis*
Affiliation: Chemical Engineering, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH 45221-0012, USA
Abstract: In this work, the effect of bi-metallic NiSn deposition on the activity of Fe-Ce ferrite spinel catalysts in high-temperature water-gas (HT-WGS) reaction was investigated. The mono-metallic Ni/Fe-Ce showed a good CO conversion with high methane selectivity during the HT-WGS. The introduction of Sn together with Ni over the Fe-Ce has significantly improved the catalytic performance in terms of HT-WGS activity and methane suppression. Furthermore, the NiSn/Fe-Ce showed a higher activity and stability as compared to the NiSn/Fe2O3 and NiSn/CeO2 catalysts. The excellent HT-WGS performance of the NiSn/Fe-Ce was ascribed to the synergistic effect between the bi-metallic NiSn and Fe-Ce mixed oxide interface.

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