کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5426181 | 1395881 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Surface chemistry of acetic acid on clean and oxygen-covered Pd(1 0 0) Surface chemistry of acetic acid on clean and oxygen-covered Pd(1 0 0)](/preview/png/5426181.png)
The surface chemistry of acetic acid is studied on clean Pd(1Â 0Â 0), Pd(1Â 0Â 0)-p(2Â ÃÂ 2)-O and Pd(1Â 0Â 0)-c(2Â ÃÂ 2)-O surfaces in ultrahigh vacuum using a combination of temperature-programmed desorption and X-ray photoelectron spectroscopy. The chemistry on clean Pd(1Â 0Â 0) is similar to that on other palladium surfaces, where molecular acetic acid desorbs at â¼200Â K and acetate species form at higher temperatures and decompose at â¼300Â K. In contrast, acetate species predominantly form on the oxygen-covered surfaces and are stable to â¼380Â K on Pd(1Â 0Â 0)-p(2Â ÃÂ 2)-O and â¼375Â K on Pd(1Â 0Â 0)-c(2Â ÃÂ 2)-O. Acetic acid and its decomposition products, hydrogen, water, carbon monoxide and carbon dioxide form simultaneously at these temperatures.
Journal: Surface Science - Volume 602, Issue 2, 15 January 2008, Pages 416-423