Catalytic Reactions in Hydrogen and Ammonia Economy

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

Deadline for manuscript submissions: 30 June 2025 | Viewed by 1090

Special Issue Editors


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Guest Editor
Department of Chemistry, University of Vermont, 82 University Place, Burlington, VT 05045, USA
Interests: organometallic catalysis in support of main group bond formation, main group catalysts; E-E and E-C bond formation; photocatalysis; mechanism

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Guest Editor Assistant
Institute of Inorganic Chemistry, Kiel University, Max-Eyth-Straße 2, D-24118 Kiel, Germany
Interests: heterogeneous catalysis; ammonia; hydrogen

Special Issue Information

Dear Colleagues,

The depletion of fossil fuels and the increase in greenhouse gas emissions have drawn significant attention from our society. As the world searches for sustainable energy solutions, one promising pathway lies in the development of a hydrogen and ammonia economy. In this blueprint, hydrogen is produced from renewable resources, such as wind, solar, or water, and serves as a clean and efficient energy source. Ammonia, a carbon-free molecule, can then be used both as a carrier and a storage medium for hydrogen, enabling long-term storage and safe transport globally. The potential of this hydrogen–ammonia economy is thus attractive in the current transition stage towards green energy and lower emission.

To bring this promising vision closer to reality, the catalysis community will play a pivotal role in key processes, particularly hydrogen production and storage, as well as ammonia synthesis and decomposition. These catalysts should be highly active but also stable. The production of such catalysts should also be cost-effective and scalable. A deeper understanding of catalytic mechanisms, reaction kinetics, and the catalyst structure is required as well.

Thus, this Special Issue is dedicated to a wide range of catalytic research, ranging from novel catalyst designs to their detailed evaluation under reaction conditions. It also includes kinetic studies, theoretical model development, and characterizations. Review papers in these areas are highly encouraged for submission.

Prof. Dr. Rory Waterman
Guest Editor

Dr. Jihao Wang
Guest Editor Assistant

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Keywords

  • hydrogen production
  • ammonia synthesis/decomposition
  • heterogeneous catalysis
  • hydrogenation
  • hydrogen storage
  • electrocatalysis
  • photocatalysis
  • thermocatalysis

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Published Papers (1 paper)

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Research

20 pages, 2939 KiB  
Article
Transition Metal Oxides Supported on TiO2 as Catalysts for the Low-Temperature Selective Catalytic Reduction of NOx by NH3
by Michael Liebau, Wolodymyr Suprun, Marcus Kasprick and Roger Gläser
Catalysts 2025, 15(1), 22; https://doi.org/10.3390/catal15010022 - 30 Dec 2024
Cited by 1 | Viewed by 890
Abstract
The conversion of NOx and the yield of N2O during NH3-SCR-DeNOx below 473 K over TiO2-supported transition metal oxide catalysts with equal loading of 20 wt.-% decreases in the following order of the supported oxides: [...] Read more.
The conversion of NOx and the yield of N2O during NH3-SCR-DeNOx below 473 K over TiO2-supported transition metal oxide catalysts with equal loading of 20 wt.-% decreases in the following order of the supported oxides: MnOx > CuOx > CoOx > FeOx > NiOx > CeOx. The storage capacity for NH3, characterized by the acid site density of the catalyst, is not directly correlated with the catalytic activity. Rather, the temperature range for the reduction of the supported transition metal oxides as determined by TPR-H2 is the main governing factor for high NH3-SCR-DeNOx activity, especially in the temperature range below 473 K. At the same time, oxidation temperature range and the density of Lewis acid sites govern the formation of N2O. The decomposition of NH4NO3 as an intermediate in the NH3-SCR-DeNOx reaction is determined by the redox property of TMO-based catalysts, which further influences both the windows of the decomposition temperature and the yield of N2O. The correlation between the redox properties and the activity for NH3-SCR-DeNOx was confirmed for a series of MnOx-CeOx/TiO2-SiO2 mixed transition metal oxide catalysts as a promising combination of the less active and more selective CeOx with less selective and highly active MnOx. The linear correlation between reduction temperature range and the NH3-SCR-DeNOx activity indicates that the found relation can be transferred to other supported transition metal-containing catalysts for low-temperature NH3-SCR-DeNOx. Full article
(This article belongs to the Special Issue Catalytic Reactions in Hydrogen and Ammonia Economy)
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