We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
In situ<sup>1</sup>H NMR Imaging Study of Propagation of Concentration Waves in an Autocatalytic Reaction in a Fixed Granular Bed.
- Authors
Koptyug, I. V.; Lysova, A. A.; Parmon, V. N.; Sagdeev, R. Z.
- Abstract
The in situ1H NMR technique was used to study the propagation of chemical waves during the liquid-phase Belousov–Zhabotinsky (BZ) reaction in a model fixed bed of grains consisting of chemically inert glass beads or quartz sand. The propagation of autocatalytic chemical waves in this bed is determined by the size of pores between the grains. The rate of wave front propagation is independent of the size of the grains involved in this bed but is much lower than that in the bulk of the homogenous aqueous phase. This may be attributed to the difference in the effective diffusion coefficients in the homogeneous liquid phase and in the bed.
- Subjects
CATALYSTS; CHEMICAL reactions; DIFFUSION; SAND; GLASS; LIQUIDS
- Publication
Kinetics & Catalysis, 2003, Vol 44, Issue 3, p401
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1023/A:1024451103734