Back to Search
Start Over
Design of Prussian blue analogue-derived double-cone structure Ce–Fe catalysts and their enhanced performance for the selective catalytic reduction of NOx with NH3.
- Source :
- New Journal of Chemistry; 12/28/2020, Vol. 44 Issue 48, p21244-21254, 11p
- Publication Year :
- 2020
-
Abstract
- Prussian blue (PB) and its analogues (PBA) with different structures and adjustable compositions have been recognized as promising materials for catalysis, energy storage, and biological applications. Herein, a simple surface anchoring strategy is proposed to achieve the uniform deposition of CeO<subscript>2</subscript> nanocrystals on the double-cone structure surface of PBA (denoted as Ce@Ce–Fe catalyst) for the selective catalytic reduction of NO<subscript>x</subscript> with NH<subscript>3</subscript> (NH<subscript>3</subscript>-SCR). Compared with Ce–Fe and Ce@CeO<subscript>2</subscript>–Fe<subscript>2</subscript>O<subscript>3</subscript>, the Ce@Ce–Fe catalyst exhibited the best catalytic activity, widest working temperature window, and highest SO<subscript>2</subscript> tolerance, implying its good application in the process of NH<subscript>3</subscript>-SCR. Moreover, the catalysts were characterized systematically to elucidate their surface properties and morphological structure. Taking advantage of the excellent redox performance, unique morphology, mesoporous structure with large surface area and pore diameter, and greater acid content, the Ce@Ce–Fe catalyst exhibited a higher NO<subscript>x</subscript> performance. In addition, the Ce@Ce–Fe catalyst also exhibited significant resistance to H<subscript>2</subscript>O and SO<subscript>2</subscript> due to its higher content of Fe atoms, implying that Fe plays a critical role in this Ce–Fe based catalytic system. More importantly, the present study indicates that well-dispersed active components and unique architectures can effectively enhance the performance of catalysts. [ABSTRACT FROM AUTHOR]
- Subjects :
- CATALYTIC reduction
CATALYST structure
PRUSSIAN blue
CATALYSTS
CATALYTIC activity
Subjects
Details
- Language :
- English
- ISSN :
- 11440546
- Volume :
- 44
- Issue :
- 48
- Database :
- Complementary Index
- Journal :
- New Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 147711714
- Full Text :
- https://doi.org/10.1039/d0nj04419a