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Nanomaterials
Special Issues
Nanosized Zeolites and their Applications
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Nanosized Zeolites and their Applications

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: closed (15 August 2018) | Viewed by 11828

Special Issue Editor

Prof. Dr. Sohrab Rohani

E-Mail Website
Guest Editor
Department of Chemical and Biochemical Engineering, University of Western Ontario (UWO), London, ON N6A 5B9, Canada
Interests: crystal engineering; crystallization process monitoring and control
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Zeolites have been widely applied as adsorbents, catalysts, advanced novel materials, etc., owing to their unique physicochemical characteristics, such as ion exchange and adsorption-desorption properties. Nanosized zeolites efficiently improve these properties due to the increased specific surface area.

This Special Issue of Nanomaterials invites contributions in synthesis and applications of functionalized nanozeolites, nanoscale zeolite materials, nano-crystal size of ZSM-5, nanostructured catalysts, flexible films and membranes for medicine, environmental, sensor applications, etc. Contributions are welcomed in synthetic novel nanocomposites with a zeolitic framework and high exterior surface area, shorter pore pathway, high cationic exchange capacity, water holding capacity, and catalytic activity.

Prof. Dr. Sohrab Rohani
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 submissions that pass pre-check are 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. Nanomaterials 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 2900 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

  • Nanosized Zeolites
  • Functionalized
  • Synthesis
  • Characterization
  • Applications
  • Catalysis
  • Adsorption
  • Environment
  • Medicine
  • Food
  • Sensor
  • Membranes

Published Papers (3 papers)

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Research

9 pages, 1263 KiB  
Article
Effect of Nano-Sized Cavities in SAPO-34 Zeolite on Thermodynamics of Adsorbed Gas Mixtures
by Fei Wang, Yasukazu Kobayashi, Yuxin Li, Dezheng Wang and Yao Wang
Nanomaterials 2018, 8(9), 672; https://doi.org/10.3390/nano8090672 - 29 Aug 2018
Cited by 1 | Viewed by 2991
Abstract
Adsorption of dimethyl ether and ethene in SAPO-34 zeolite with the calorimetric (adsorption heat versus coverage) curve measured together with the adsorption isotherm showed two phases of adsorption: first, Type 1 adsorption on acid sites, and second, Type 2 adsorption elsewhere in the [...] Read more.
Adsorption of dimethyl ether and ethene in SAPO-34 zeolite with the calorimetric (adsorption heat versus coverage) curve measured together with the adsorption isotherm showed two phases of adsorption: first, Type 1 adsorption on acid sites, and second, Type 2 adsorption elsewhere in the cages by physisorption that continued with increasing pressure. Binary gas mixture experiments showed that only the ideal adsorbed solution theory (IAST) gave correct surface concentrations, while the multicomponent Langmuir isotherm for competitive adsorption was incorrect even though the acid site concentration was the same for the adsorbates. This is because the adsorption occurred in two adsorption phases while the Langmuir isotherm model is based on a single adsorption phase. Full article
(This article belongs to the Special Issue Nanosized Zeolites and their Applications)
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19 pages, 6578 KiB  
Article
DeNOx Abatement over Sonically Prepared Iron-Substituted Y, USY and MFI Zeolite Catalysts in Lean Exhaust Gas Conditions
by Damian K. Chlebda, Patrycja Stachurska, Roman J. Jędrzejczyk, Łukasz Kuterasiński, Anna Dziedzicka, Sylwia Górecka, Lucjan Chmielarz, Joanna Łojewska, Maciej Sitarz and Przemysław J. Jodłowski
Nanomaterials 2018, 8(1), 21; https://doi.org/10.3390/nano8010021 - 03 Jan 2018
Cited by 15 | Viewed by 4444
Abstract
Iron-substituted MFI, Y and USY zeolites prepared by two preparation routes—classical ion exchange and the ultrasound modified ion-exchange method—were characterised by micro-Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet (UV)/visible diffuse reflectance spectroscopy (UV/Vis DRS). Ultrasound irradiation, a new technique [...] Read more.
Iron-substituted MFI, Y and USY zeolites prepared by two preparation routes—classical ion exchange and the ultrasound modified ion-exchange method—were characterised by micro-Raman spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet (UV)/visible diffuse reflectance spectroscopy (UV/Vis DRS). Ultrasound irradiation, a new technique for the preparation of the metal salt suspension before incorporation to the zeolite structure, was employed. An experimental study of selective catalytic reduction (SCR) of NO with NH3 on both iron-substituted reference zeolite catalysts and those prepared through the application of ultrasound conducted during an ion-exchange process is presented. The prepared zeolite catalysts show high activity and selectivity in SCR deNOx abatement. The MFI-based iron catalysts, especially those prepared via the sonochemical method, revealed superior activity in the deNOx process, with almost 100% selectivity towards N2. The hydrothermal stability test confirmed high stability and activity of MFI-based catalysts in water-rich conditions during the deNOx reaction at 450 °C. Full article
(This article belongs to the Special Issue Nanosized Zeolites and their Applications)
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4077 KiB  
Article
Acidic Mesoporous Zeolite ZSM-5 Supported Cu Catalyst with Good Catalytic Performance in the Hydroxysulfurization of Styrenes with Disulfides
by Jun Hu, Chaojie Zhu, Feifei Xia, Zhongxue Fang, Fengli Yang, Jushi Weng, Pengfei Yao, Chunzhi Zheng, Hai Dong and Wenqian Fu
Nanomaterials 2017, 7(12), 459; https://doi.org/10.3390/nano7120459 - 19 Dec 2017
Cited by 5 | Viewed by 3702
Abstract
Development of highly active heterogeneous catalysts is an effective strategy for modern organic synthesis chemistry. In this work, acidic mesoporous zeolite ZSM-5 (HZSM-5-M), acidic-free mesoporous zeolite TS-1 (TS-1-M), and basic ETS-10 zeolite supported metal Cu catalysts were prepared to investigate their catalytic performances [...] Read more.
Development of highly active heterogeneous catalysts is an effective strategy for modern organic synthesis chemistry. In this work, acidic mesoporous zeolite ZSM-5 (HZSM-5-M), acidic-free mesoporous zeolite TS-1 (TS-1-M), and basic ETS-10 zeolite supported metal Cu catalysts were prepared to investigate their catalytic performances in the hydroxysulfurization of styrenes with diaryl disulfides. The effect of pore size and acidities of the supports, as well as the Cu species electronic properties of the catalysts on reaction activity were investigated. The results show that Cu+ and Cu2+ binded on HZSM-5-M show the highest activity and product selectivity for the desired β-hydroxysulfides compounds. Full article
(This article belongs to the Special Issue Nanosized Zeolites and their Applications)
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