期刊
CHEMICAL COMMUNICATIONS
卷 58, 期 59, 页码 8214-8217出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2cc02139k
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资金
- French National Research Agency (ANR) [ANR-21-CE07-0009-01]
- Agence Nationale de la Recherche (ANR) [ANR-21-CE07-0009] Funding Source: Agence Nationale de la Recherche (ANR)
Iridium-aluminium nanoparticles grafted onto silica show enhanced catalytic performances in methane H/D exchange, compared to monometallic iridium nanoparticles. The catalyst exhibits high TON values and remains active after exposure to air, indicating good robustness.
The grafting of an iridium-aluminium precursor onto silica followed by thermal treatment under H-2 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(-1)versus 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.
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