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每周分享：activation of carbon-supported platinum catalysts by sodium for the low-temperature water-gas shift reaction
麦克默瑞提克（上海）仪器有限公司 2014-07-22 点击685次
麦克默瑞提克（上海）仪器有限公司 2014-07-22 点击685次
今天给大家分享的是2014年1月份 《applied catalysis b: environmental》上发表的一篇名为：activation of carbon-supported platinum catalysts by sodium for the low-temperature water-gas shift reaction
文章摘要如下：
the activation of multi-walled carbon nanotube-supported platinum catalysts for the low-temperature water-gas shift reaction is demonstrated by the addition of sodium. nitric acid oxidation of the carbon nanotubes allows for the addition of sodium through ion-exchange and creates anchoring sites for platinum. we show that an oxidized platinum state is stabilized by the presence of sodium. evidence for a sodium-promoted pt-(oh)x active site is given through xps analysis of the catalysts before and after reaction and confirmed by co-tpr. removal of the oxygen groups and partial removal of sodium by annealing the na-modified carbon nanotubes to 800 °c in inert atmosphere creates a surface on which pt is initially very active, but of lower stability due to the absence of a sufficient number of surface sodium anchoring sites.
该文章中材料表征采用的是美国麦克仪器autochem 2920
详情可参考下面链接：
http://www.sciencedirect.com/science/article/pii/s0926337313004323
文章摘要如下：
the activation of multi-walled carbon nanotube-supported platinum catalysts for the low-temperature water-gas shift reaction is demonstrated by the addition of sodium. nitric acid oxidation of the carbon nanotubes allows for the addition of sodium through ion-exchange and creates anchoring sites for platinum. we show that an oxidized platinum state is stabilized by the presence of sodium. evidence for a sodium-promoted pt-(oh)x active site is given through xps analysis of the catalysts before and after reaction and confirmed by co-tpr. removal of the oxygen groups and partial removal of sodium by annealing the na-modified carbon nanotubes to 800 °c in inert atmosphere creates a surface on which pt is initially very active, but of lower stability due to the absence of a sufficient number of surface sodium anchoring sites.
该文章中材料表征采用的是美国麦克仪器autochem 2920
详情可参考下面链接：
http://www.sciencedirect.com/science/article/pii/s0926337313004323