The desorpllon of CO, produced through the ~nw.rnctmn betueen oxygen adatoms nnd adsorbed CO on Pd(lll) surfaces was swdwd by rnwns of angle-resolved thermal desorptmn The nngulor dlstnbuwm nas enlrrmcly sharp and depended on the local configurahon of co-adsorbares around the sn1.z or CO, forma~ron
Anisotropic angular distribution of desorption of CO2 produced on Pd(110) surfaces
โ Scribed by Tatsuo Matsushima
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 261 KB
- Volume
- 155
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The desorption of CO, produced by the interaction of oxygen adatoms and CO admolecules on Pd( 110) was studied with angle-resolved thermal desorption. Four peaks of CO, formation appeared in the different coverage and temperature range. The desorption flux shows sharp and anisotropic angular distributions.
๐ SIMILAR VOLUMES
We study the CO chemisorption on epitaxial Pd and Pt monolayers grown on W (110), by using a simple tight-binding self-consistent recursion method model. The tr donation, "rr back-donation and the adsorption energy are reduced by the substrate presence. For the atop site above Pd/W (110), however, t
Gas phase coupling between two separate ( 1 IO)-oriented palladium single crystals is reported during reaction rate oscillations of CO oiidation. The oscillations were monitored by simultaneous measurement of work function changes on each crystal and of the combined CO2 production rates. With the on
The angular distribution of the desorption flux of carbon dioxide produced on Pt( 110) ( 1 x 2) reconstructed surfaces was studied in both crystal azimuths of [ I i0 ] and [ 00 1 ] by means of angle-resolved thermal desorption. Heating the surface covered by CO and oxygen adatoms yields four peaks o
A chemisorbed species of CO, has been observed on Pd( 1 IO) in the presence of coadsorbed water. It has been identified using vibrational spectroscopy as a bent, negatively charged CO;-species which has previously been observed on a number of clean and alkali metal predosed surfaces. The donation of
The coadsorption of CO and C&I, on the Pd( 110) surface has been stu&ed by usmg low-energy electron dlffractlon (LEED), high-resolution electron energy loss spectroscopy (EELS) and thermal desorptlon spectroscopy (TDS) A (3 x 2) LEED pattern 1s observed for the (CO + C2H,)-coadsorbed Pd ( 1 IO) surf