Formation of two-dimensional concentration pulses on microdesigned composite catalyst surfaces

Citation
M. Pollmann et al., Formation of two-dimensional concentration pulses on microdesigned composite catalyst surfaces, PHYS REV L, 86(26), 2001, pp. 6038-6041
Citations number
23
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
26
Year of publication
2001
Pages
6038 - 6041
Database
ISI
SICI code
0031-9007(20010625)86:26<6038:FOTCPO>2.0.ZU;2-J
Abstract
We study the effect of microdesigned composite geometries on pattern format ion during the catalytic oxidation of CO on Pt-Ti, Pt-Ph, and Pt-Pd composi te catalysts. In particular, we find experimentally (and rationalize throug h modeling) that adsorbate surface transport through the second (active) co mponent drastically affects the shapes and interactions of concentration pa tterns (traveling pulses) observed on pure Pt.