Magnetically enhanced polymer-supported ceria nanocatalysts for the hydration of nitriles
| Autor: | Ana Torres-Suay, Rafael Muñoz-Espí, Francisco Pérez-Pla, Olaia Álvarez-Bermúdez, Katharina Landfester |
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| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science Mechanical Engineering Nanoparticle chemistry.chemical_element Bioengineering 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Heterogeneous catalysis 01 natural sciences Pickering emulsion Nanomaterial-based catalyst 0104 chemical sciences Catalysis Miniemulsion Cerium chemistry Chemical engineering Mechanics of Materials General Materials Science Electrical and Electronic Engineering 0210 nano-technology |
| Zdroj: | Nanotechnology. 31(40) |
| ISSN: | 1361-6528 |
| Popis: | The heterogeneous catalysis of the hydration of nitriles to amides is a process of great industrial relevance in which cerium(IV) oxide (also referred to as ceria) has shown an outstanding catalytic performance. The use of non-supported ceria nanoparticles is related to difficulties in the purification of the product and the recovery and recyclability of the catalyst. Therefore, in this work, ceria nanoparticles are supported on a polymer matrix either by synthesizing polymer particles by so-called Pickering miniemulsions while using ceria nanoparticles as emulsion stabilizers or, as a comparison, by in-situ crystallization on preformed polymer particles. The former strategy presents significant advantages over the latter in terms of time and consumption of resources, and it facilitates an easier scale-up of the process. In both strategies, the incorporation of a magnetoresponsive core within the polymer matrix allows the recovery and the recycling of the catalyst by simple application of a magnetic field and offers an enhancement of the catalytic efficiency. |
| Databáze: | OpenAIRE |
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