Issue 59, 2022

Highly dispersed silica-supported iridium and iridium–aluminium catalysts for methane activation prepared via surface organometallic chemistry

Abstract

The grafting of an iridium–aluminium precursor onto silica followed by thermal treatment under H2 yields small (<2 nm), narrowly distributed nanoparticles used as catalysts for methane H/D exchange. This Ir–Al/SiO2 catalyst demonstrated enhanced catalytic performances in comparison with the monometallic Ir/SiO2 analogue (TOFs of 339 h−1versus 117 h−1 respectively), highlighting the promoting effect of aluminium. TON up to 900 is obtained after 9 hours, without evidence of catalyst deactivation, and identical performances are achieved after air exposure, underlining the good robustness of both Ir–Al/SiO2 and Ir/SiO2 catalytic materials.

Graphical abstract: Highly dispersed silica-supported iridium and iridium–aluminium catalysts for methane activation prepared via surface organometallic chemistry

Supplementary files

Article information

Article type
Communication
Submitted
14 apr 2022
Accepted
24 jun 2022
First published
24 jun 2022
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2022,58, 8214-8217

Highly dispersed silica-supported iridium and iridium–aluminium catalysts for methane activation prepared via surface organometallic chemistry

L. Escomel, D. F. Abbott, V. Mougel, L. Veyre, C. Thieuleux and C. Camp, Chem. Commun., 2022, 58, 8214 DOI: 10.1039/D2CC02139K

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