OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

THERMAL DESORPTION OF FREE RADICALS FROM CATALYST SURFACES DETECTED BY LASER-INDUCED FLUORESCENCE

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/11407

Show full item record

Files Size Format View
1980-TG-01.jpg 73.31Kb JPEG image Thumbnail of THERMAL DESORPTION OF FREE RADICALS FROM CATALYST SURFACES DETECTED BY LASER-INDUCED FLUORESCENCE

Title: THERMAL DESORPTION OF FREE RADICALS FROM CATALYST SURFACES DETECTED BY LASER-INDUCED FLUORESCENCE
Creators: Talley, Larry D.; Lin, M. C.
Issue Date: 1980
Abstract: OH($^{2}\pi$)was detected in the dissociative adsorption of $H_{2} O$ on polycrystalline Pt above $550^{\circ} C$. The flux of thermally desorbed OH from Pt was measured as a function of Pt temperature, $H_{2} O$ pressure, and added $H_{2}, D_{2}$ and $O_{2}$ partial pressures. The observations support the following mechanism:\begin{eqnarray} && H_{2}O + 2^{*} \rightarrow OH^{*} + H^{*} \\ && HO^{*} + ^{*} \rightarrow H^{*} + O^{*}\\ && HO^{*} \rightarrow OH + ^{*},\end{eqnarray} Where $""{^{*}}""$ represents an active catalyst site. The activation energy for reaction (3) was measured to be $30 \pm 1$ kcal/mole.
URI: http://hdl.handle.net/1811/11407
Other Identifiers: 1980-TG-1
Bookmark and Share