Release of Oxygen from Palladium Oxide Cluster Ions by Heat
Release of Oxygen from Palladium Oxide Cluster Ions by Heat
复制标题
氧化钯簇离子受热释放氧气
DOI：
10.1021/acs.jpca.5b03222
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Fumitaka Mafune
中科院分区：
文献类型：
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作者：
Ken Miyajima;Fumitaka Mafune
在氧气存在的情况下，使用激光烧蚀钯棒在气相中制备氧化钯簇离子PdnOm+。将团簇离子从团簇源的下游加热至1000 K（后加热），并使用质谱法检查PdnOm+（n= 2-7）的丰度。程序升温脱附实验表明，氧分子从富氧的PdnOm+中释放出来，形成缺氧的PdnOm-2+。结果表明，Pd 6 O 4+在1000 K以下是热稳定的。得到了氧分子脱附的活化能，并与Lang等人的结果进行了比较。
Palladium oxide cluster ions, PdnOm+, were prepared in the gas phase using laser ablation of a palladium rod in the presence of oxygen. The cluster ions were heated to 1000 K downstream from the cluster source (post heating), and the abundance of PdnOm+(n= 2–7) was examined using mass spectrometry. Temperature-programmed desorption experiments revealed that an oxygen molecule is released from oxygen-rich PdnOm+, forming oxygen-deficient PdnOm–2+. It was found that Pd6O4+was thermally stable up to 1000 K. The activation energy for oxygen molecule desorption has been obtained and compared with previous results by Lang et al.