Catalytic Applications of Layered Double Hydroxides

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

Deadline for manuscript submissions: 15 August 2025 | Viewed by 1085

Special Issue Editors


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Guest Editor
Department of Sustainable Materials, VITO Flemish Institute for Technological Research, Boeretang 200, 2400 Mol, Belgium
Interests: layered double hydroxides and oxides; structural design; 3D shaping of powders; adsorption and catalytic applications
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Guest Editor
Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection, Technical University “Gh. Asachi” of Iasi Bd. D. Mangeron, 700554 Iasi, Romania
Interests: layered double hydroxides; structural memory effect; nanostructured catalysts
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Catalysis has a rich history of facilitating energy-efficient, selective molecular transformations and contributes to more than 90% of current chemical manufacturing processes.

We are excited to announce the launch of a Special Issue dedicated to establishing an international platform for the scientific community to share recent advancements in layered double hydroxides (LDHs) and their catalytic applications, including their roles as catalysts, catalyst precursors, and catalytic supports.

As two-dimensional anionic clays, LDHs consist of positively charged brucite-like layers (M(OH)6 octahedra) and interlayer anions and are described by the general formula [M2+1−XM3+X (OH)2]X+[An−]X /n ·mH2O, where M represents the metal cations and A represents the intercalated anionic species. Upon calcination, LDHs transform into mixed metal oxides. LDH-based materials benefit from their structural and compositional flexibility, cost effectiveness, relatively high specific surface area, abundant hydroxyl groups, thermal stability, unique memory properties, and semiconductor and charge transport characteristics. These properties collectively enhance their potential as catalysts for various applications.

This Special Issue will explore, but is not limited to, the design and synthesis of layered double hydroxides and their derived mixed metal oxides for applications in the following areas:

Electrocatalysis: Electrode materials for electrochemical energy storage and conversion, including batteries, supercapacitors (SCs), and water splitting processes (water oxidation and oxygen evolution reactions).

Photocatalysis: Water splitting, CO2 reduction and conversion, and environmental pollution control (total decomposition of volatile organic compounds, organic waste decomposition, DeNOx and DeSOx, etc.).

Basic Catalysis: Organic reactions such as aldol condensation, transesterification, alkylation, and the depolymerization–fractionation of (bio)polymers.

Additionally, special attention will be given to research focused on structuring 2D LDH-based catalysts into 3D architectures, such as 3D printing and coatings, to develop electrodes or photocatalytic devices and advance LDH technologies towards large-scale applications.

Submissions of original research papers, review articles, and short communications are all welcome for this Special Issue.

Dr. Elena M. Seftel
Prof. Dr. Gabriela Carja
Guest Editors

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Keywords

  • layered double hydroxides
  • mixed metal oxides
  • electrocatalysis
  • photocatalysis
  • basic catalysis
  • powders and 3D-shaped architectures

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Published Papers (1 paper)

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Research

16 pages, 3163 KiB  
Article
Hydrogen Energy Storage via CO2 Hydrogenation over Catalysts Prepared by Layered Double Hydroxide Precursor
by Guosong Wang, Xiaosheng Wang, Ranjia Li, Changchun Yu and Tao Zhen
Catalysts 2025, 15(2), 111; https://doi.org/10.3390/catal15020111 - 23 Jan 2025
Viewed by 719
Abstract
Converting CO2 and green hydrogen into products such as methane and methanol not only has a negative carbon effect, but also stores renewable energy into energy chemicals. This represents a promising route for hydrogen energy storage technologies. The hydrogenation of CO2 [...] Read more.
Converting CO2 and green hydrogen into products such as methane and methanol not only has a negative carbon effect, but also stores renewable energy into energy chemicals. This represents a promising route for hydrogen energy storage technologies. The hydrogenation of CO2 to methane and methanol, which represent strongly exothermic reactions, are thermodynamically favored at low temperatures. However, the inherent inertness of CO2 makes it difficult to activate CO2 at low temperatures. Both reactions face the challenge of activating CO2 at low temperature, so catalysts exhibiting high activity under such conditions are a critical need. Layered double hydroxides (LDHs) have attracted considerable interest owing to their regular layered structure and uniform dispersion of multiple metallic components. However, there are few studies on the same effects of promoters over LDHs-derived catalysts. Here, we investigated the same effects of promoters on two LDHs-derived catalysts in different CO2 hydrogenation reactions to illustrate the effects of promoters on facilitating low-temperature CO2 activation in LDHs-derived catalysts. By adding promoters Fe and Mn to the catalysts NiAl-Fe and CuZnAl-Mn, the crystal lattices were expanded, surface areas were increased 38% and 25%, and the reduction temperatures were decreased to 97 °C and 10 °C, respectively. These promoters significantly enhanced the CO2 adsorption and activation of the catalysts NiAl-Fe and CuZnAl-Mn. The methanation catalyst NiAl-Fe achieved a CO2 conversion of 80.8% at 200 °C and 2 MPa, while the methanol synthesis catalyst CuZnAl-Mn exhibited a CO2 conversion of 21.3% and a methanol selectivity of 61.8% under the conditions of 250 °C and 3 MPa. The influence of the LDHs precursors’ structure and the addition of promoters Fe and Mn on the catalytic performance were studied by XRD, N2 adsorption–desorption, H2-TPR, H2-TPD, and CO2-TPD. Full article
(This article belongs to the Special Issue Catalytic Applications of Layered Double Hydroxides)
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