کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5426126 | 1395877 | 2007 | 8 صفحه PDF | دانلود رایگان |

The adsorption and reactivity of SO2 on the Ir(1Â 1Â 1) and Rh(1Â 1Â 1) surfaces were studied by surface science techniques. X-ray photoelectron spectroscopy measurements showed that SO2 was molecularly adsorbed on both the Ir(1Â 1Â 1) surface and the Rh(1Â 1Â 1) surface at 200Â K. Adsorbed SO2 on the Ir(1Â 1Â 1) surface disproportionated to atomic sulfur and SO3 at 300Â K, whereas adsorbed SO2 on the Rh(1Â 1Â 1) surface dissociated to atomic sulfur and oxygen above 250Â K. Only atomic sulfur was present on both surfaces above 500Â K, but the formation process and structure of the adsorbed atomic sulfur on Ir(1Â 1Â 1) were different from those on Rh(1Â 1Â 1). On Ir(1Â 1Â 1), atomic sulfur reacted with surface oxygen and was completely removed from the surface, whereas on Rh(1Â 1Â 1), sulfur did not react with oxygen.
Journal: Surface Science - Volume 601, Issue 6, 15 March 2007, Pages 1615-1622