Hydrogenation of Cyclohexane and Dehydrocyclization of n-Heptane over Single Crystal Surfaces of Iridium.
Abstract
The dehydrogenation of cyclohexane and the dehydrocyclization of n-heptane were investigated at low hydrocarbon pressure on two single crystal surfaces of iridium. The surfaces studied were Ir(111) and Ir(755) or stepped (6(111)x(100)). The reaction rates were monitored by a quadrupole mass spectrometer, the surface structure and surface composition were determined by means of low-energy electron diffraction and Auger electron spectroscopy. The results are discussed and compared with similar studies on single crystal surfaces of platinum. The stepped iridium surface appeared to be a factor of 5 more active in dehydrogenation than the iridium (111) surface. The activity of iridium in dehydrocyclization was lower than that for platinum surfaces of the same structure. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 26, 1976
- Accession Number
- ADA032215
Entities
People
- B. E. Nieuwenhuys
- G. A. Somorjai
Organizations
- University of California, Berkeley