The Latest Trends in Catalyst Immobilization

A special issue of Chemistry (ISSN 2624-8549). This special issue belongs to the section "Catalysis".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 1888

Special Issue Editor


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Guest Editor
Dipartimento di Chimica, Università degli Studi di Milano, Via Golgi 19, 20133 Milano, Italy
Interests: organic synthesis; stereoselective catalysis; supported catalysts and catalytic reactors; flow chemistry; 3D printing technologies for organic synthesis
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Special Issue Information

Dear Colleagues,

Immobilized catalysts represent a key tool for the development of a modern and sustainable chemistry. The anchoring of a catalyst into a (solid) support with the aim of facilitating its recovery and, ultimately, its recycling, is a well-established methodology with a long history. However, research in this field is still very active and attractive, since heterogenized catalysts can contribute to the realization of more environmentally friendly processes. This Special Issue has the goal to include the latest trends in the field of immobilized catalysts: chiral and achiral catalysts and organo- and metal-based catalysts. In this very broad topic, a special mention goes to biocatalysis: The use of (supported) enzymes as “special” catalysts is a powerful methodology in the hands of the synthetic organic chemist who wants to develop efficient and highly stereoselective catalytic reactions. The chosen (solid) support often plays a fundamental role in the success of the catalyst itself. Not only does it dictate the possible recovery (and recycle) of the catalytic species, but it often influences the catalyst performances, either in a positive or in a negative way. In other words, the support can enhance the stability of the immobilized catalyst, leading to a more active catalyst, or it can depress its reactivity. This is the reason the development of new and “smart” materials is a topic strictly related to the development of new supported catalysts. Moreover, the support itself may have catalytic properties. This Special Issue on “The Latest Trends in Catalyst Immobilization” will serve as an opportunity to bring together the different aspects of catalyst heterogenization: the design of new, modified catalytic species ready for the anchoring, the development of new materials that can act as a support or a catalyst, the characterization of the catalytic system, and the studies on catalyst activity and recyclability.

You may choose our Joint Special Issue in Molecules.

Prof. Dr. Alessandra Puglisi
Guest Editor

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Keywords

  • immobilized catalysts
  • solid support
  • organocatalysis
  • metal catalysis
  • biocatalysis
  • enzymes
  • recyclable catalyst
  • smart materials
  • sustainable process

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Published Papers (1 paper)

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Research

14 pages, 1582 KiB  
Article
Sweet, Sugar-Coated Hierarchical Platinum Nanostructures for Easy Support, Heterogenization and Separation
by Dennis Woitassek, José G. Moya-Cancino, Yangyang Sun, Yefan Song, Dennis Woschko, Stefan Roitsch and Christoph Janiak
Chemistry 2022, 4(4), 1147-1160; https://0-doi-org.brum.beds.ac.uk/10.3390/chemistry4040078 - 30 Sep 2022
Cited by 1 | Viewed by 1392
Abstract
Metal nanoparticles are increasingly gaining interest in the field of heterogeneous catalysis. Here, we present a novel strategy for synthesizing sugar-coated platinum nanostructures (SC-Pt-NS) from the carbohydrates sucrose and D(-)-fructose. In the synthesis from a mixture of H2PtCl6·6H2 [...] Read more.
Metal nanoparticles are increasingly gaining interest in the field of heterogeneous catalysis. Here, we present a novel strategy for synthesizing sugar-coated platinum nanostructures (SC-Pt-NS) from the carbohydrates sucrose and D(-)-fructose. In the synthesis from a mixture of H2PtCl6·6H2O, the carbohydrate in an ionic liquid (IL) yielded primary particles of a homogeneous average size of ~10 nm, which were aggregated to hierarchical Pt nanostructures of ~40–65 nm and surrounded or supported by the carbohydrate. These sugar-coated platinum nanostructures present a facile way to support and heterogenize nanoparticles, avoid leaching and enable easier separation and handling. The catalytic activity of the SC-Pt-NS was shown in the hydrosilylation test reaction of phenylacetylene with triethylsilane, where very high turnover frequency (TOF) values of up to 87,200 h−1 could be achieved, while the platinum metal leaching into the product was very low. Full article
(This article belongs to the Special Issue The Latest Trends in Catalyst Immobilization)
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