Recent advances in core-shell structured catalysts for low-temperature NH3-SCR of NOx.
Chemosphere
; 333: 138942, 2023 Aug.
Article
en En
| MEDLINE
| ID: mdl-37187371
ABSTRACT
Ammonia selective catalytic reduction (NH3-SCR) of nitrogen oxides is an effective and well-established technology for NOx removal, but current commercial denitrification catalysts based on V2O5-WO3/TiO2 have some obvious disadvantages, including narrow operating temperature windows, toxicity, poor hydrothermal stability, and unsatisfied SO2/H2O tolerance. To overcome these drawbacks, it is imperative to investigate new types of highly efficient catalysts. In order to design catalysts with outstanding selectivity, activity, and anti-poisoning ability, core-shell structured materials have been widely applied in the NH3-SCR reaction, which exhibits numerous advantages including the large surface area, the strong synergy interaction of core-shell materials, the confinement effect, and the shielding effect from the shell layer to protect the core. This review summarizes recent developments of core-shell structured catalysts for NH3-SCR, including basic classification, synthesis methods, and a detailed description of the performance and mechanisms of each type of catalyst. It is hoped that the review will stimulate future developments in NH3-SCR technology, leading to novel catalyst designs with improved denitrification performance.
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Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Titanio
/
Amoníaco
Idioma:
En
Revista:
Chemosphere
Año:
2023
Tipo del documento:
Article