Solid Catalysts – New Perspectives and Applications
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University of Belgrde, Innovation Center of the Faculty of Technology and Metallurgy in Belgrade Ltd., Karnegijeva 4, 11 120 Belgrade, Serbia
* Correspondence: Vesna Nikolić
Special Issue: Solid Catalysts – New Perspectives and Applications
Received: March 31, 2024 | Accepted: March 31, 2024 | Published: April 09, 2024
Catalysis Research 2024, Volume 4, Issue 2, doi:10.21926/cr.2402004
Recommended citation: Nikolić V. Solid Catalysts – New Perspectives and Applications. Catalysis Research 2024; 4(2): 004; doi:10.21926/cr.2402004.
© 2024 by the authors. This is an open access article distributed under the conditions of the Creative Commons by Attribution License, which permits unrestricted use, distribution, and reproduction in any medium or format, provided the original work is correctly cited.
Keywords
Heterogeneous catalysts; metal and metal-oxide based catalysts; industrial application; sustainable development; circular economy
Heterogeneous catalysis is crucial for the progress of emerging and well-known chemical processes and it also has a very important role in environmental protection, sustainable development, recycling/upcycling, reduction of the carbon footprint, achievement of circular economy, etc. Supported catalysts are widely utilized in the production of a variety of fine and special chemicals [1,2,3]. Currently, there is a growing trend in the design of supported catalysts by using novel approaches to obtain suitable morphology, structure, and textural properties of both support and active matter [4]. Considering the rapid progress of a wide variety of industries, there is an increased need for transferring scientific research on improved catalysts from laboratory to industrial-scale level.
This Special Issue includes some of the topics above, as well as several examples of metal and metal-oxide-based catalysts application in various catalysis processes. Recycling/upcycling of plastic wastes back to arenes, which are used for obtaining aromatic plastics and plastic fibers can be achieved by using a Ru/Nb2O5 catalyst [2]. Exhaust gases from coke ovens, blast furnaces and blast oxygen furnaces in iron-making plants mainly contain CO, H2, and CH4. Those gases can be recycled by solid catalysts utilization to produce synthesis gas or methanol, by reforming reactions [5]. Some catalysts with improved properties that enable high resistance to deactivation, used for reforming gaseous hydrocarbons include Ni/perovskite systems such as Ni/LaAlO3 and Ni/La0.7Mg0.3AlO3-δ [4], Ni-supported on La2O3 + ZrO2 where Ni is promoted with 1 wt.% of Gd, Ga, Cr and Ca [3], Ni/MgO-Al2O3 [6], Pd-Ni/CeO2 [7], Ni/MgO-Ce0.8-Zr0.2-O2 [8]. Catalysts based on systems WO3/ZrO2 or WO3/ZrSiO4 are used for dehalogenation of organohalogen compounds, such as Freons or fire retardants [9,10]. V2O5-WO3/TiO2 is an example of a system for selective catalytic reduction (SCR) of NOx [11].
Finally, as mentioned, there is a growing need to improve catalyst properties and transfer research to an industrial-scale level. Improved catalysts possess high activity, selectivity, deactivation resistance, and suitable mechanical properties. That is achieved by fine-tuning a catalytically active matter and support composition, as well as implementing various novel synthesis methods that include, for example, microwave-assisted processes, ultrasonically assisted synthesis of core-shell structured particles, ultrasonically assisted impregnation, using various sacrificial templates to obtain hierarchically ordered open porosity together with high mechanical properties, and many others [7,12,13]. In addition, the combination of novel and well-known technologies for catalyst production is one of the ways to produce catalysts suitable for industrial use in terms of efficiency and economy.
Author Contributions
The author did all the research work for this study.
Competing Interests
The author has declared that no competing interests exist.
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