Well-defined surface tungstenocarbyne complex through the reaction of [W(≡CtBu)(CH2tBu)3] with CeO2: a highly stable precatalyst for NOx reduction with NH3

A novel well-defined precatalyst for ammonia-selective catalytic reduction of NOx (NH3-SCR), namely, [W(≡CtBu)(CH2tBu)3]/CeO2, was prepared by surface organometallic chemistry and then characterized. Due to the high dispersion of the active phase, this catalyst showed excellent activity after calcin...

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Bibliographic Details
Published in:New journal of chemistry 2021-07, Vol.45 (27), p.12024-12032
Main Authors: Larabi, Cherif, Chen, Cuirong, Merle, Nicolas, Charlin, Marc, Szeto, Kai C, De Mallmann, Aimery, Benayad, Anass, Meziane, Karima B, Kaddouri, Akim, Nguyen, Hai P, Mostafa Taoufik
Format: Article
Language:English
Subjects:
Ammonia
Cerium oxides
Chemical reduction
Nitrates
Organometallic compounds
Selective catalytic reduction
Selectivity
Online Access:Get full text
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Summary:A novel well-defined precatalyst for ammonia-selective catalytic reduction of NOx (NH3-SCR), namely, [W(≡CtBu)(CH2tBu)3]/CeO2, was prepared by surface organometallic chemistry and then characterized. Due to the high dispersion of the active phase, this catalyst showed excellent activity after calcination at 500 °C, described by up to 99% conversion of NOx, high N2 selectivity, broad operation temperature window (225–500 °C), and extremely high durability for the selective catalytic reduction of NOx with NH3.
ISSN:1144-0546
1369-9261
DOI:10.1039/d0nj02146f