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Catalysts
Special Issues
Advances in Technologies for Catalyst Development and Catalyzed Reactions
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Advances in Technologies for Catalyst Development and Catalyzed Reactions

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: closed (30 September 2023) | Viewed by 6610

Special Issue Editors

Dr. Praveen Kumar

E-Mail Website
Guest Editor
Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000 Ljubljana, Slovenia
Interests: catalyst synthesis and characterization; metal oxides; organic carbonate synthesis; biomass valorization
Prof. Dr. Vimal Chandra Srivastava

E-Mail Website
Guest Editor
Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India
Interests: catalysis; nanomaterials; carbon dioxide utilization; alternative fuels; desulfurization; industrial pollution abatement; separation processes

Special Issue Information

Dear Colleagues,

The need for the production of various chemicals and alternative fuels is increasing day by day. These chemicals and fuels are being produced from various raw materials and different raw routes. The need for the utilization of CO2 and Fischer–Tropsch (FT) synthesis approaches is ever-increasing. Conversion of biomass and coal into syngas, methane, methanol, etc., and further conversion to chemicals and fuels is significant.

All these reactions may require very harsh conditions in terms of temperature and pressure. Thus, the importance of catalysis is increasing. Effective catalysts can conveniently control the direction and rate of a reaction under suitable reaction temperature and pressure. Heterogeneous and electro-catalysis are receiving more and more attention in chemical and fuel synthesis, biomass conversion, wastewater treatment, energy generation, etc. However, there are numerous challenges such as catalyst deactivation, stability, search for low-cost catalysts, etc., in catalyst design with the correct set of properties. Additionally, multiple engineering challenges such as non-ideal mechanistic kinetics and thermodynamics need to be studied.

This Special Issue aims to cover catalyst design and engineering challenges for various catalysts being developed for chemical and fuel synthesis, biomass conversion, wastewater treatment, energy generation, etc.

Dr. Praveen Kumar
Prof. Dr. Vimal Chandra Srivastava
Guest Editors

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. Catalysts is an international peer-reviewed open access monthly 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 2700 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

  • advanced heterogeneous catalysts
  • catalyst design
  • alternative fuels and chemicals
  • biomass conversion
  • wastewater treatment
  • thermodynamics, kinetics, and scale-up

Published Papers (3 papers)

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Research

13 pages, 2636 KiB  
Article
Highly Efficient Decarboxylation of L-Lysine to Cadaverine Catalyzed by RuO2 Encapsulated in FAU Zeolite
by Zhanling Ma, Zongwu Xin, Shaojie Qin and Yuhong Huang
Catalysts 2022, 12(7), 733; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12070733 - 02 Jul 2022
Cited by 4 | Viewed by 2023
Abstract
The development of an efficient catalyst especially with a high productivity for decarboxylation of L-lysine to cadaverine, is of both industrial and economic significance. Here, we reported the synthesis of RuO2 well-confined in the supercage of FAU zeolite (RuO2@FAU) through [...] Read more.
The development of an efficient catalyst especially with a high productivity for decarboxylation of L-lysine to cadaverine, is of both industrial and economic significance. Here, we reported the synthesis of RuO2 well-confined in the supercage of FAU zeolite (RuO2@FAU) through in situ hydrothermal strategies. A set of characterizations, such as XRD, Raman, TEM, XPS, NH3-TPD and N2 physical adsorption, confirmed the successful encapsulation of RuO2 clusters (~1.5 nm) inside the FAU zeolite. RuO2@FAU had the higher cadaverine productivity of 120.9 g/L/h/mmol cat., which was almost six times that of traditionally supported ruthenium oxide catalysts (21.2 g/L/h/mmol cat.). RuO2@FAU catalysts with different ammonia exchange degrees, as well as different Si/Al ratios were further evaluated. After optimization, the highest cadaverine productivity of 480.3 g/L/h/mmol cat. was obtained. Deep analysis of the electronic properties of RuO2@FAU indicated that the surface defect structures, such as oxygen vacancies, played a vital role in the adsorption or activation of L-lysine which finally led to a boosted performance. Furthermore, the mechanism of decarboxylation of L-lysine to cadaverine was proposed. Full article
(This article belongs to the Special Issue Advances in Technologies for Catalyst Development and Catalyzed Reactions)
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12 pages, 3416 KiB  
Article
Sm-CeO2/Zeolite Bifunctional Catalyst for Direct and Highly Selective Conversion of Bioethanol to Propylene
by Huan Jin, Changxi Miao, Yinghong Yue, Chao Tian, Weiming Hua and Zi Gao
Catalysts 2022, 12(4), 407; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12040407 - 06 Apr 2022
Cited by 4 | Viewed by 1734
Abstract
A series of Sm-CeO2/Beta composites with various Beta contents were prepared by an incipient impregnation method, followed by calcination at 650 °C. They were characterized by XRD, N2 adsorption, SEM, NH3-TPD, CO2-TPD and 27Al MAS [...] Read more.
A series of Sm-CeO2/Beta composites with various Beta contents were prepared by an incipient impregnation method, followed by calcination at 650 °C. They were characterized by XRD, N2 adsorption, SEM, NH3-TPD, CO2-TPD and 27Al MAS NMR. The Sm-CeO2/Beta bifunctional catalysts exhibit eminent catalytic performances in the selective conversion of ethanol to propylene. In particular, the Sm-CeO2/10%Beta catalyst with 10% Beta zeolite gives the highest C3H6 yield of 59.3%. A good match between Sm-CeO2 and Beta accounts for its optimal result. Full article
(This article belongs to the Special Issue Advances in Technologies for Catalyst Development and Catalyzed Reactions)
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11 pages, 2801 KiB  
Article
Synthesis of Nanostructured TiO2 Microparticles with High Surface Area
by Lev Matoh, Boštjan Žener, Tina Skalar and Urška Lavrenčič Štangar
Catalysts 2021, 11(12), 1512; https://0-doi-org.brum.beds.ac.uk/10.3390/catal11121512 - 11 Dec 2021
Cited by 1 | Viewed by 1868
Abstract
Hydrothermal reactions represent a simple and efficient method for the preparation of nanostructured TiO2 particles that could be of interest as photocatalysts or catalytic supports. Although the particle size is in the range of 2–5 µm, the nanostructures composing the particles ensure [...] Read more.
Hydrothermal reactions represent a simple and efficient method for the preparation of nanostructured TiO2 particles that could be of interest as photocatalysts or catalytic supports. Although the particle size is in the range of 2–5 µm, the nanostructures composing the particles ensure a large specific surface area with values above 100 m2/g. The effects of the different synthesis parameters on the morphology, photocatalytic activity, and stability of the prepared material were studied. The surface morphology of the prepared TiO2 powders was studied by scanning electron microscopy (SEM). To further characterize the samples, the specific surface area for different morphologies was measured and the photocatalytic activity of the prepared powders was tested by degrading model pollutants under UV irradiation. The results show that the initial morphology had little effect on the photocatalytic properties. On the other hand, the final calcination temperature significantly increased the degradation rates, making it comparable to that of P25 TiO2 (particle size 20–30 nm). Full article
(This article belongs to the Special Issue Advances in Technologies for Catalyst Development and Catalyzed Reactions)
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