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Science 6 January 1984:
Vol. 223. no. 4631, pp. 56 - 58
DOI: 10.1126/science.223.4631.56
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Articles

Carbon Compounds in Interplanetary Dust: Evidence for Formation by Heterogeneous Catalysis

J. P. BRADLEY 1, D. E. BROWNLEE 1, and P. FRAUNDORF 2

1 Department of Astronomy, FM-20, University of Washington, Seattle 98195
2 Monsanto Electronics Materials Company, Monsanto Research Center, St. Louis, Missouri 63167, and Department of Physics, Washington University, St. Louis 63130

Associations of carbonaceous material with iron-nickel alloy, carbides, and oxides were identified by analytical electron microscopy in ten unmelted chondritic porous micrometeorites from the earth's stratosphere. These associations, which may be interpreted in terms of reactions between a carbon-containing gas and catalytically active dust grains, suggest that some of the carbon in the chondritic porous subset of interplanetary dust was emplaced through heterogeneous catalysis.

Submitted on August 9, 1983
Accepted on November 1, 1983


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Interstellar Polycyclic Aromatic Hydrocarbons and Carbon in Interplanetary Dust Particles and Meteorites.
L. J. ALLAMANDOLA, S. A. SANDFORD, and B. WOPENKA (1987)
Science 237, 56-59
   Abstract »    PDF »
Acid Dissolution Experiments: Carbonates and the 6.8-Micrometer Bands in Interplanetary Dust Particles.
S. A. Sandford and S. A. SANDFORD (1986)
Science 231, 1540-1541
   Abstract »    PDF »
Cometary Particles: Thin Sectioning and Electron Beam Analysis.
J. P. Bradley, J. P. BRADLEY, and D. E. BROWNLEE (1986)
Science 231, 1542-1544
   Abstract »    PDF »
A Carbonate-Rich, Hydrated, Interplanetary Dust Particle: Possible Residue from Protostellar Clouds.
K. Tomeoka, K. TOMEOKA, and P. R. BUSECK (1986)
Science 231, 1544-1546
   Abstract »    PDF »
Discovery of Nucler Tracks in Interplanetary Dust.
J. P. Bradley, J. P. BRADLEY, D. E. BROWNLEE, and P. FRAUNDORF (1984)
Science 226, 1432-1434
   Abstract »    PDF »


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