Details

Autor(en) / Beteiligte

• Yeo, Y. Y.
• Wartnaby, C. E.
• King, D. A.

Titel

Calorimetric Measurement of the Energy Difference Between Two Solid Surface Phases

Ist Teil von

• Science (American Association for the Advancement of Science), 1995-06, Vol.268 (5218), p.1731-1732

Ort / Verlag

Washington, DC: American Society for the Advancement of Science

Erscheinungsjahr

1995

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A recently designed single-crystal surface calorimeter has been deployed to measure the energy difference between two solid surface structures. The clean Pt100 surface is reconstructed to a stable phase in which the surface layer of platinum atoms has a quasi-hexagonal structure. By comparison of the heats of adsorption of CO and of C$_2$H$_4$ on this stable Pt100-hex phase with those on a metastable Pt100-(1 × 1) surface, the energy difference between the two clean phases was measured as 20 ± 3 and 25 ± 3 kilojoules per mole of surface platinum atoms.