Selective Catalytic Reduction: From Basic Science to deNOx Applications II

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

Deadline for manuscript submissions: closed (30 July 2022) | Viewed by 2287

Special Issue Editors


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Guest Editor
Department of Chemistry and Biochemistry, Faculty of Agriculture, University of Belgrade, 11080 Beograd, Serbia
Interests: surface science; catalyst characterization; zeolites

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Guest Editor
Faculty of Agriculture, Department of Chemistry and Biochemistry, University of Belgrade, 11080 Zemun, Serbia
Interests: catalyst characterization; micro-/meso-porous materials; calorimetry

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Guest Editor
School of Energy and Power Engineering, Chongqing University, Chongqing 400044, China
Interests: emission control; deNOx catalyst; plasma catalysis; water gas shift; H2 storage; N2 fixation
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Special Issue Information

Dear Colleagues,

Selective catalytic reduction (SCR) of NOx with ammonia is widely considered to be a leading method for NOx abatement. Although it has been successfully implemented for several decades, it is still very much the focus of ongoing catalytic research, which aims to expand the applicability and improve the efficiency of the SCR process. Through designing novel catalysts and formulating new insights concerning relations between catalysts’ structure, nature of active sites, and activity in realistic conditions (i.e., different operating temperatures, presence of poisoning agents, etc.), the potentials of SCR are constantly being developed. This Special Issue is the second volume dedicated to novel trends in selective catalytic reduction, with a focus on, but not limited to, the following:

  • Fundamental research on the reaction mechanisms of the SCR process;
  • Novel catalysts for the SCR of NOx;
  • Poisoning of SCR catalysts and anti-poisoning design;
  • New deNOx approaches for low temperature applications;
  • Expanding SCR for the simultaneous abatement of NOx and other pollutants;
  • Computational research for SCR catalyst design.

Dr. Vladislav Rac
Dr. Vesna Rakic
Dr. Xuesen Du
Guest Editors

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Keywords

  • Synthesis and optimization of SCR catalysts
  • SCR mechanisms and kinetics
  • Low temperature SCR
  • Poisoning and regeneration of SCR catalysts
  • DFT calculations

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Published Papers (1 paper)

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Research

12 pages, 2662 KiB  
Article
Comparison of Industrial and Lab-Scale Ion Exchange for the DeNOx-SCR Performance of Cu Chabazites: A Case Study
by Valentina Rizzotto, Stefan Bajić, Dario Formenti, Xiaochao Wu, Silke Sauerbeck, Jonas Werner, Thomas E. Weirich, Tobias Janke, Peter Mauermann, Stefan Pischinger, Regina Palkovits and Ulrich Simon
Catalysts 2022, 12(8), 880; https://0-doi-org.brum.beds.ac.uk/10.3390/catal12080880 - 11 Aug 2022
Cited by 1 | Viewed by 1471
Abstract
The efficiency and robustness of selective catalytic reduction (SCR) by NH3 catalysts for exhaust gas purification, especially of heavy-duty diesel engines, will continue to play a major role, despite the increasing electrification of powertrains. With that in mind, the effect of the [...] Read more.
The efficiency and robustness of selective catalytic reduction (SCR) by NH3 catalysts for exhaust gas purification, especially of heavy-duty diesel engines, will continue to play a major role, despite the increasing electrification of powertrains. With that in mind, the effect of the synthesis scale on commercially available Cu-exchanged chabazite catalysts for SCR was investigated through physicochemical characterizations and catalytic tests. During hydrothermal aging, both industrial and lab-scale prepared catalysts underwent structural dealumination of the zeolite framework and redistribution of the Al sites. Although both catalysts demonstrated similar NO conversion activity under SCR conditions, the lab-scale catalyst showed higher selectivity and lower activity in NH3 oxidation. Variations in N2O formation and NH3 oxidation rate were found to correlate with the formation of different copper species, and the compositions become less controllable in industrial-scale process. This case study focused on routes of ion exchange, and the results provide new insights into catalytic performance of the industrially-produced zeolites. Full article
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