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  • Surface oxygen triggered size change of palladium nano-crystals impedes catalytic efficacy.

Surface oxygen triggered size change of palladium nano-crystals impedes catalytic efficacy.

Chemical communications (Cambridge, England) (2010-12-07)
Jianli Zou, Scott G Stewart, Colin L Raston, K Swaminathan Iyer
要旨

Palladium nano-crystals increase in size during the initial recycling in Heck cross coupling reactions. We demonstrate that oxygen adsorbed on the surface of palladium nano-crystals plays a pivotal role in driving the ripening. This in turn is associated with a loss in catalytic activity.

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Sigma-Aldrich
アクリル酸ブチル, ≥99%, contains 10-60 ppm monomethyl ether hydroquinone as inhibitor
Sigma-Aldrich
ヨードベンゼン, 98%
Supelco
アクリル酸ブチル, analytical standard
Sigma-Aldrich
アクリル酸ブチル, SAJ first grade, ≥99.0%