|
Accession Number
|
N20120011832
|
|
Title
|
Carbon Isotopic Fractionation in Fischer-Tropsch Type Reactions and Relevance to Meteorite Organics.
|
|
Publication Date
|
2012
|
|
Media Count
|
10p
|
|
Personal Author
|
J. A. Nuth J. E. Elsila M. Kopstein N. M. Johnson
|
|
Abstract
|
Fischer-Tropsch-Type (FTT) reactions have been hypothesized to contribute to the formation of organic compounds in the early solar system, but it has been difficult to identify a signature of such reactions in meteoritic organics. The work reported here examined whether temperature-dependent carbon isotopic fractionation of FTT reactions might provide such a signature. Analyses of bulk organic deposits resulting from FTT experiments show a slight trend towards lighter carbon isotopic ratios with increasing temperature. It is unlikely, however, that these carbon isotopic signatures could provide definitive provenance for organic compounds in solar system materials produced through FTT reactions, because of the small scale of the observed fractionations and the possibility that signatures from many different temperatures may be present in any specific grain.
|
|
Keywords
|
Carbon
Deposits
Fischer-tropsch process
Fractionation
Isotopic labeling
Organic compounds
Signatures
Solar system
Temperature dependence
|
|
|
Source Agency
|
National Aeronautics and Space Administration
|
|
NTIS Subject Category
|
54C - Astrophysics
|
|
Corporate Author
|
Goddard Space Flight Center, Greenbelt, MD.
|
|
Document Type
|
Journal article
|
|
Title Note
|
N/A
|
|
NTIS Issue Number
|
1226
|
|
Contract Number
|
N/A
|
