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Layered Double Hydroxides and Related Materials for Advanced Heterogeneous Catalytic...
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Layered Double Hydroxides and Related Materials for Advanced Heterogeneous Catalytic Processes

A topical collection in Catalysts (ISSN 2073-4344). This collection belongs to the section "Catalytic Materials".

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Editors

Prof. Dr. Ioan-Cezar Marcu

E-Mail Website
Collection Editor
Laboratory of Chemical Technology and Catalysis, University of Bucharest, 4-12, Blv. Regina Elisabeta, 030018 Bucharest, Romania
Interests: heterogeneous catalysis; catalysis by metal oxides; semiconducting metal oxides; layered double hydroxides and related materials; catalytic oxidation
Special Issues, Collections and Topics in MDPI journals
Dr. Octavian D. Pavel

E-Mail Website
Collection Editor
Faculty of Chemistry, University of Bucharest, 050663 Bucharest, Romania
Interests: base catalysts; fine chemicals synthesis; ionic liquids
Special Issues, Collections and Topics in MDPI journals

Topical Collection Information

Dear Colleagues,

Layered double hydroxides (LDHs) belong to the class of anionic clays and possess some specific properties, such as uniform distribution of cations/anions in the network, tailored textural characteristics, high surface area, both acid-base and redox properties, and memory effect, which make them peculiar catalytic materials, catalyst supports, and precursors for multicationic mixed oxides, supported metal catalysts, high-entropy oxides, and composite or hybrid materials (polymer/LDH nanocomposites, graphene oxide/LDH hybrids, core/shell multifunctional materials, thin films, etc.). They can act as acid-base, redox, bifunctional or multifunctional heterogeneous catalysts, photocatalysts, and electrocatalysts for different processes. Thus, the present topical collection is devoted to the investigation of the catalytic behavior of innovative LDH-based materials in a wide range of challenging processes, including, but not limited to, the synthesis of value-added chemicals and fuels, biomass conversion, energy production, pollution abatement, etc.

Prof. Dr. Ioan-Cezar Marcu
Dr. Octavian D. Pavel
Collection Editors

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Keywords

  • layered double hydroxides
  • catalytic materials
  • LDH-based composites and hybrids
  • LDH and mixed oxide catalyst supports
  • acid-base catalysts
  • redox catalysts
  • sustainable processes
  • fine chemical synthesis
  • photocatalysis
  • electrocatalysis

Related Special Issues

Published Papers (2 papers)

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2025

24 pages, 6589 KB  
Article
Beyond Fossil Fuels: The Role of V-Doped Hydrotalcites in n-Butane Oxidative Dehydrogenation for a Circular Economy
by Agnieszka Węgrzyn, Alicja Katarzyńska, Paweł Miśkowiec and Wacław Makowski
Catalysts 2025, 15(9), 841; https://doi.org/10.3390/catal15090841 - 2 Sep 2025
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Abstract
This study explores the catalytic performance of V3+-modified Mg/Al hydrotalcite-derived materials in the oxidative dehydrogenation (ODH) of n-butane, compared with catalysts derived from pyrovanadate and decavanadate precursors. Different methods for preparing hydrotalcite-like materials were applied to obtain vanadium-containing Mg-Al mixed oxide [...] Read more.
This study explores the catalytic performance of V3+-modified Mg/Al hydrotalcite-derived materials in the oxidative dehydrogenation (ODH) of n-butane, compared with catalysts derived from pyrovanadate and decavanadate precursors. Different methods for preparing hydrotalcite-like materials were applied to obtain vanadium-containing Mg-Al mixed oxide catalysts for n-butane ODH. The hydrotalcite-like precursors were doped with vanadates (V5+) via ion exchange or co-precipitation or with V3+ cations incorporated into brucite-like layers. During calcination in air or argon flow, different vanadium-containing phases were obtained. Our findings demonstrate that V3+-doped hydrotalcites exhibit superior activity and selectivity toward the total C4H8 products, with enhanced selectivity for 1,3-butadiene. The highest n-butane conversion was observed for catalysts with an MgO structure and vanadium dispersed in the oxide matrix. A similar conversion level (~44%) was obtained for a spinel-like Mg2VO4 catalyst, but only a 15% level was found for the highly crystalline α-Mg2V2O7 catalyst. In contrast, the highest selectivities toward dehydrogenated products were observed for V3+-containing and α-Mg2V2O7 catalysts. NH3- and CO2-temperature programmed desorption (TPD) analyses showed that high basicity combined with low acidity favors the formation of butene isomers and 1,3-butadiene. This work highlights the strategic potential of tailoring vanadium speciation and hydrotalcite-based catalyst design for low-carbon chemical manufacturing, supporting the transition toward a circular economy. Full article
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24 pages, 3246 KB  
Article
Layered Double Hydroxide (LDH)-Derived Mixed Oxides for Enhanced Light Hydrocarbon Production from CO2 Hydrogenation
by Evridiki Mandela, Antigoni G. Margellou, Athanasia Kotsaridou, George E. Marnellos, Michalis Konsolakis and Konstantinos S. Triantafyllidis
Catalysts 2025, 15(4), 323; https://doi.org/10.3390/catal15040323 - 27 Mar 2025
Cited by 2 | Viewed by 2847
Abstract
Layered double hydroxide (LDH)-derived mixed oxides offer a promising approach for CO2 hydrogenation to light hydrocarbons. Herein, we explore the impact of various transition metals (X = Mn, Co, Cu, and Zn) incorporated into the M-Al or M-(Al+Fe) LDH structures, with the [...] Read more.
Layered double hydroxide (LDH)-derived mixed oxides offer a promising approach for CO2 hydrogenation to light hydrocarbons. Herein, we explore the impact of various transition metals (X = Mn, Co, Cu, and Zn) incorporated into the M-Al or M-(Al+Fe) LDH structures, with the aim of exploring possible synergistic effects. Structural and compositional analyses reveal that an abundance of Fe over Al (Fe/Al ratio ~4) leads to the formation of mixed oxide crystalline phases attributed to CoFe2O4, CuFe2O4, and ZnFe2O4. Catalytic evaluation results demonstrate that the X-Al LDH-derived oxides exhibit high CO2 conversion yet are selective to CH4 or CO. In contrast, Fe incorporation shifts selectivity toward higher hydrocarbons. Specifically, the yield to higher hydrocarbons (C2+) follows the order Ζn-Al-Fe > Cu-Al-Fe > Mn-Al-Fe > Co-Al-Fe >> Mn-Al, Co-Al, Zn-Al, Cu-Al, highlighting the pivotal role of Fe. Moreover, Zn-Al-Fe and Mn-Al-Fe catalysts have been shown to be the most selective towards light olefins. Zn-based systems also exhibit high thermal and structural stability with minimal coke formation, whereas Co-, Cu-, and Mn-based catalysts, when modified with Fe, experience increased carbon deposition or structural changes that may impact long-term stability. This work provides insights into the combined role of Fe and a second transition metal in LDHs for modulating catalytic activity, phase transformations, and stability, underscoring the need for further optimization to balance selectivity and catalyst durability in CO2 hydrogenation applications. Full article
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