molecules-logo

Journal Browser

Journal Browser

Special Issue "Zeolitic Microporous Materials and Their Applications"

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

Deadline for manuscript submissions: 31 January 2020.

Special Issue Editor

Dr. Susana Valencia
E-Mail Website
Guest Editor
Instituto de Tecnología Química (Universitat Politècnica de València-CSIC), Valencia, Spain
Interests: zeolites; microporous materials; synthesis; catalysts; characterization; adsorption; diffusion; hydrocarbons; gas separation

Special Issue Information

Dear Colleagues,

Research in the field of zeolites is a highly active and relevant area as these materials are widely used as catalysts and adsorbents in industrial applications, despite the appearance, in recent years, of other fascinating microporous materials. Several new zeolite structures are reported every year due to the efforts of different research groups in academia and industry, allowing the chance for selecting the material that best fits the requirements of a particular process. Owing to the properties of zeolites, such as uniform porosity, thermal and hydrothermal stability, robustness, and the possibility of generating acidic or other active sites, these materials are used as selective catalysts in refining, petrochemical, and fine chemistry industries, also in the upgrading of new raw materials, and in adsorption and separation processes.

This Special Issue of Molecules aims to attract original contributions in various topics related to zeolite materials, covering aspects ranging from the preparation of zeolites, their characterization, and application in different areas. In particular, submissions of research papers about the synthesis of new zeolites or improving the properties of existing ones, their structural and active sites characterization, and their use as catalysts, adsorbents or in new fields are welcome.

Dr. Susana Valencia
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • New zeolites
  • Advances in zeolite synthesis
  • Structural characterization of zeolites
  • Characterization of active sites in zeolites
  • Catalytic applications of zeolites
  • Zeolites in adsorption and separation processes
  • New applications of zeolites

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Open AccessArticle
Magnetic Solid-Phase Extraction of Pyrethroid Pesticides from Environmental Water Samples Using Deep Eutectic Solvent-type Surfactant Modified Magnetic Zeolitic Imidazolate Framework-8
Molecules 2019, 24(22), 4038; https://doi.org/10.3390/molecules24224038 - 07 Nov 2019
Abstract
A simple, sensitive and effective magnetic solid-phase extraction (MSPE) technique was developed for the extraction of pyrethroid pesticides from environmental water samples, followed by gas chromatography tandem triple quadrupole mass spectrometry determination. An adsorbent of magnetic zeolitic imidazolate [email protected] eutectic solvent ([email protected]) was [...] Read more.
A simple, sensitive and effective magnetic solid-phase extraction (MSPE) technique was developed for the extraction of pyrethroid pesticides from environmental water samples, followed by gas chromatography tandem triple quadrupole mass spectrometry determination. An adsorbent of magnetic zeolitic imidazolate [email protected] eutectic solvent ([email protected]) was prepared using deep eutectic solvent coated on the surface of M-ZIF-8. The features of [email protected] were confirmed by material characterizations, and the results indicated that [email protected] has a good magnetism (61.3 emu g−1), a decent surface area (96.83 m2 g−1) and pore volume (0.292 mL g−1). Single factor experiments were carried out to investigate the effect of different conditions on the performance of MSPE. Under the optimal conditions, the developed method performs good linearity (R2 ≥ 0.9916) in the concentration range of 1–500 μg L−1. The limits of detection were in the range of 0.05–0.21 μg L−1 (signal/noise = 3/1). The intraday relative standard deviation (RSD) and interday RSD were less than 9.40%. Finally, the proposed technique was applied for the determination of pyrethroid pesticides in environmental water samples. This work shows the potential of DES-modified metal-organic frameworks for different sample pretreatment techniques. Full article
(This article belongs to the Special Issue Zeolitic Microporous Materials and Their Applications)
Show Figures

Graphical abstract

Open AccessArticle
The Influence of Zeolite (Sokyrnytsya Deposit) on the Physical and Chemical Resistance of a Magnesium Potassium Phosphate Compound for the Immobilization of High-Level Waste
Molecules 2019, 24(19), 3421; https://doi.org/10.3390/molecules24193421 - 20 Sep 2019
Abstract
The manuscript presents the results of the development of new material for high-level waste (HLW) management: the magnesium potassium phosphate (MKP) compound. The possibility of using zeolite (Sokyrnytsya deposit) to increase the mechanical, thermal, and hydrolytic resistance of this compound with immobilized HLW [...] Read more.
The manuscript presents the results of the development of new material for high-level waste (HLW) management: the magnesium potassium phosphate (MKP) compound. The possibility of using zeolite (Sokyrnytsya deposit) to increase the mechanical, thermal, and hydrolytic resistance of this compound with immobilized HLW was studied. The main component of the used natural zeolite is a mineral of the clinoptilolite–heulandite series, and quartz, microcline, and clay minerals (illite, sepiolite, and smectite) are present as impurities. The compressive strength of the compound, containing at least 4.2 wt % zeolite, is about 25 MPa. Compound containing 28.6 wt % zeolite retains high compressive strength (at least 9.0 MPa), even after heat treatment at 450 °C. The adding of zeolite to the composition of the compound increases its hydrolytic stability, while the leaching rate of the mobile nuclides 137Cs and 90Sr decreases up to one order of values. Differential leaching rate of radionuclides from the compound containing 28.6 wt % zeolite is 2.6 × 10−7 for 137Cs, 2.9 × 10−6 for 90Sr, 1.7 × 10−9 for 239Pu, and 2.9 × 10−9 g/(cm2∙day) for 241Am. Thus, the properties of the resulting compound correspond to the requirements for solidified HLW in Russia. Full article
(This article belongs to the Special Issue Zeolitic Microporous Materials and Their Applications)
Show Figures

Figure 1

Open AccessArticle
SYSU-6, A New 2-D Aluminophosphate Zeolite Layer Precursor
Molecules 2019, 24(16), 2972; https://doi.org/10.3390/molecules24162972 - 16 Aug 2019
Abstract
Two-dimensional aluminophosphate is an important precursor of phosphate-based zeolites; a new Sun Yat-sen University No. 6 (SYSU-6) with |Hada|2[Al2(HPO4)(PO4)2] has been synthesized in the hydrothermal synthesis with organic structure-directing agent (OSDA) of N [...] Read more.
Two-dimensional aluminophosphate is an important precursor of phosphate-based zeolites; a new Sun Yat-sen University No. 6 (SYSU-6) with |Hada|2[Al2(HPO4)(PO4)2] has been synthesized in the hydrothermal synthesis with organic structure-directing agent (OSDA) of N,N,3,5-tetramethyladamantan-1-amine. In this paper, SYSU-6 is characterized by single-crystal/powder X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray analysis, transmission electron microscopy, infrared and UV Raman spectroscopy, solid-state 27Al, 31P and 13C magic angle spinning (MAS) NMR spectra, and elemental analysis. The single-crystal X-ray diffraction structure indicates that SYSU-6 crystallized in the space group P21/n, with a = 8.4119(3), b = 36.9876(12), c = 12.5674(3), α = 90°, β = 108.6770(10)°, γ = 90°, V = 3704.3(2) Å3, Z = 4, R = 5.12%, for 8515 observed data (I > 2σ(I)). The structure has a new 4,12-ring layer framework topology linked by alternating AlO4 and PO4 tetrahedra. The organic molecules reside between the layers and are hydrogen-bonded to the inorganic framework. The new type of layer provides a greater opportunity to construct zeolite with novel topology. Full article
(This article belongs to the Special Issue Zeolitic Microporous Materials and Their Applications)
Show Figures

Graphical abstract

Back to TopTop