Interaction of cyclohexadiene with platinum(111) studied by BPTDS and HREELS
| Autor: | A. L. Diaz, Charles T. Campbell, Markus B. Hugenschmidt |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
chemistry.chemical_classification
Hydrogen Stereochemistry Electron energy loss spectroscopy General Engineering Thermal desorption chemistry.chemical_element Activation energy Photochemistry Catalysis chemistry.chemical_compound Hydrocarbon chemistry Physical and Theoretical Chemistry Benzene Platinum |
| Zdroj: | The Journal of Physical Chemistry. 96:5974-5978 |
| ISSN: | 1541-5740 0022-3654 |
| DOI: | 10.1021/j100193a060 |
| Popis: | The interactions of 1,3- and 1,4-cyclohexadiene with Pt(111) have been studied with bismuth postdosing thermal desorption mass spectroscopy (BPTDS) and high-resolution electron energy loss spectroscopy (HREELS). Both species adsorb molecularly on Pt(111) at 100 K. Upon warming, both species dehydrogenate completely to produce adsorbed benzene. The reaction occurs at about 230-260 K with an activation energy of 14 {plus_minus} 2 kcal/mol. The adsorbed benzene thus produced either dehydrogenates, ultimately to graphitic carbon, or desorbs, both occuring above 450 K. When cyclohexadiene is coadsorbed with hydrogen adatoms, no significant amounts of hydrogenated products ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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