The importance of particle-support interaction on particle size determination by gas chemisorption
The importance of particle-support interaction on particle size determination by gas chemisorption
复制标题
颗粒-载体相互作用对气体化学吸附测定粒径的重要性
DOI：
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发表时间：
2016
影响因子：
2.5
通讯作者：
L. Torrente‐Murciano
中科院分区：
文献类型：
--
作者：
L. Torrente‐Murciano
The interaction of the metal-support and particle shape has a key role on the determination of the particle size by gas chemisorption. This paper demonstrates mathematically that, assuming metal particles with hemispherical shapes (a common assumption in this type of characterisation) can provide misleading results of up to one order of magnitude. Thus, the metal particle sizes are underestimated when the metal strongly interacts with the support and overestimated when there is a weak metal-support interaction. Additionally, we also demonstrate that although the assumption of spherical shapes always underestimates the size of particles, this error is considerably lower with regular geometries than that associated to the effect of the metal-support interaction due to their effect on the particle shape. Herein, it is demonstrated the importance of introducing the particle-support interaction factor in the chemisorption particle size determination.Graphical Abstract
