Structured Supports and Catalysts: Design, Preparation, and Applications

A special issue of Compounds (ISSN 2673-6918).

Deadline for manuscript submissions: closed (30 November 2022) | Viewed by 3895

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Energy Technology and Renewable Sources Department (TERIN)—ENEA—Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Piazzale Enrico Fermi, 1, Località Granatello, 80055 Portici, Italy
Interests: hydrogen production and storage, reforming; gasification; propane dehydrogenation; structured catalysts
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Special Issue Information

Dear Colleagues

Over the last few decades, numerous studies have been published on the use of structured catalysts for various applications, both in the environmental field (NOx abatement, VOC removal, combustion, etc.) and in the intensification of syngas, hydrogen, and related production processes (reforming, WGS, methanation, etc.). Structured catalysts are typically obtained through the realization of a catalytically active coating on a structured support of the ceramic or metal type. The most studied structured supports are monoliths and foams. Several techniques for the preparation of structured supports have been described; monoliths are generally obtained by extrusion, rolling, and piling of crimped foils, while foams are obtained with the "replication method" or the "bubble generation method". More recently, additive manufacturing techniques have been proposed to obtain conventional structures such as monoliths, and also hybrid structures or more complex geometries, by depositing or sintering materials, based on coordinates derived from a digital model, through a computer-controlled positioning system. Several techniques are used to realize the catalytic coating, including impregnation, washcoating, deposition, and chemical conversion. The choice of the structured support is decisive for the transport phenomena, and the chemical formulation of the coating depends on the intended application. Moreover, the chemical and textural characteristics of the structured support are crucial to the choice of the technique of realization of the coating.

This Special Issue of Compounds covers a wide range of aspects of the realization of structured supports and catalytic coatings and applications in the environmental and catalytic fields. Original research papers, short communications, and review articles are welcome.

Dr. Marco Martino
Guest Editor

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Keywords

  • structured support
  • structured catalyst
  • coating
  • heat transfer
  • mass transfer
  • additive manufacturing
  • 3D printing
  • catalysis
  • modeling
  • simulation

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Published Papers (2 papers)

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Editorial

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2 pages, 191 KiB  
Editorial
Structured Supports and Catalysts: Design, Preparation, and Applications
by Marco Martino
Compounds 2022, 2(3), 191-192; https://doi.org/10.3390/compounds2030014 - 15 Jul 2022
Cited by 1 | Viewed by 1341
Abstract
In the field of industrial chemistry, catalysts play a fundamental role in determining the ability of chemical production processes to reach and improve productivity targets [...] Full article

Research

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13 pages, 1874 KiB  
Article
Possible Role of Vesicles on Metallocatalytic Reduction Reaction of 5-Hydroxymethylfurfural to 2,5-Dimethylfuran
by Toshinori Shimanouchi, Yuki Takahashi, Keita Hayashi, Kazuma Yasuhara and Yukitaka Kimura
Compounds 2022, 2(4), 321-333; https://doi.org/10.3390/compounds2040027 - 3 Nov 2022
Cited by 3 | Viewed by 1599
Abstract
A reduction reaction of 5-hydroxymethylfurfural to 2,5-dimethylfuran (2,5-DMF) has been previously performed in an organic solvent under high-temperature conditions. For the relaxation of such reaction conditions, conventional palladium on carbon (Pd/C) was combined with vesicles composed of phospholipids or surfactants. Pd/C combined with [...] Read more.
A reduction reaction of 5-hydroxymethylfurfural to 2,5-dimethylfuran (2,5-DMF) has been previously performed in an organic solvent under high-temperature conditions. For the relaxation of such reaction conditions, conventional palladium on carbon (Pd/C) was combined with vesicles composed of phospholipids or surfactants. Pd/C combined with 1,2-dioleoyl-sn-glycero-3-phosphocholine indicated a yield (25%) at 60 °C compared with Pd/C (17%). Vesicles at the liquid crystalline phase were advantageous for the reduction reaction of HMF. The yield of 2,5-DMF catalyzed by Pd/C combined with the vesicles depended on the lipid composition of the vesicles. It was clarified that the yield of 2,5-DMF could be controlled by the hydration property of the vesicles. Compared with conventional 2,5-DMF synthesis in an organic solvent, the use of vesicles made it possible to reduce the burden of using organic solvents in high-temperature conditions, although limitedly. Full article
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