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Porous and Nanoporous Materials in Heterogeneous Catalysis, 2nd Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Materials Chemistry".

Deadline for manuscript submissions: 31 May 2026 | Viewed by 629

Special Issue Editor


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Guest Editor
Department of Chemical Engineering, Instituto Superior de Engenharia de Lisboa, 1950-007 Lisboa, Portugal
Interests: heterogeneous catalysis; zeolites; hierarchical zeolites; bifunctional catalysts; carbon materials; porous silicas
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Special Issue Information

Dear Colleagues,

Porous and nanoporous materials have a wide range of applications in molecular separation, adsorption, and especially as heterogeneous catalysts or catalyst supports. A large set of porous materials, such as zeolites and zeotypes, metal–organic frameworks (MOFs), carbon materials, and mesoporous silicas, share the common feature of having a large surface area and pore volume. The micropores inside such materials can act as microreactors, where the native active sites or introduced species, such as metals, promote the occurrence of catalytic reactions. On the other hand, larger pores or even the external surface of these materials can accommodate bulky species, such as enzymes or organometallic catalysts, thereby preventing leaching and transforming homogeneous catalysts into environmentally friendly and reusable heterogeneous catalysts.

This Special Issue aims to stimulate discussion on the synthesis and modification of porous and nanoporous materials, with a focus on their applications as catalysts or catalyst supports in heterogeneous catalysis.

Dr. Angela Martins
Guest Editor

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Keywords

  • porous and nanoporous materials
  • heterogeneous catalysts
  • hierarchical materials
  • bifunctional catalysts
  • catalyst supports
  • zeolites
  • zeotypes
  • carbon materials
  • MOFs
  • mesoporous silicas

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Published Papers (1 paper)

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Research

18 pages, 1543 KB  
Article
Paracetamol Removal from Aqueous Media Through Fenton Reaction Using ZSM-5 Zeolite Produced from Fly Ash
by Nuno Horta, Sofia Martins, Hugo F. Silva, Nelson Nunes, Ana S. Mestre, Ana P. Carvalho and Angela Martins
Molecules 2026, 31(7), 1104; https://doi.org/10.3390/molecules31071104 - 27 Mar 2026
Viewed by 424
Abstract
The purpose of this study is the exploration of the catalytic performance of a ZSM-5 zeolite produced from iron-rich fly ash, without any additional iron loading, in removing paracetamol via a heterogenous Fenton reaction. The structural and textural characterization by powder X-ray diffraction [...] Read more.
The purpose of this study is the exploration of the catalytic performance of a ZSM-5 zeolite produced from iron-rich fly ash, without any additional iron loading, in removing paracetamol via a heterogenous Fenton reaction. The structural and textural characterization by powder X-ray diffraction and N2 adsorption isotherms showed that a pure ZSM-5 phase was synthesized, but lower crystallinity and textural parameters were obtained when compared with commercial ZSM-5. The XPS analysis revealed significant amounts of iron and yttrium, which enhanced the electronic properties of the samples’ surface when compared with iron-impregnated commercial ZSM-5. The catalytic reaction was followed through UV-spectroscopy and kinetic models were applied to the data; the best fit was obtained for a pseudo-first-order model. All fly ash-based zeolites showed increased paracetamol removal when compared with commercial iron-loaded ZSM-5, which may be attributed to the more disordered structure, able to accommodate large paracetamol species (dimers). On the other hand, the effect of yttrium on the electronic properties of iron sites may increase the OH radical formation, thus increasing the paracetamol removal rate, despite the progressive drop on paracetamol removal upon regeneration–reuse cycles due to Fe leaching. Full article
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