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Radiolysis of aqueous solutions of acetic acid in the presence of Na-montmorilloniteThe gamma-irradiation of 0.8 mol dm-3 aqueous, oxygen-free acetic acid solutions was investigated in the presence or absence of Na-montmorillonite. H2, CH4, CO, CO2, and several polycarboxylic acids were formed in all systems. The primary characteristics observed in the latter system were: (1) Higher yield of the decomposition of acetic acid; (2) Lower yield of the formation of polycarboxylic acids; (3) No effect on the formation of methane; (4) Higher yield of the formation of carbon dioxide; and (5) The reduction of Fe3+ in the octahedral sites of Na-montmorillonite. A possible reaction scheme was proposed to account for the observed changes. The results are important in understanding heterogeneous processes in radiation catalysis and might be significant to prebiotic chemistry.
Document ID
20040089805
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Navarro-Gonzalez, R.
(Instituto de Ciencias Nucleares, UNAM, Mexico DF)
Negron-Mendoza, A.
Ramos, S.
Ponnamperuma, C.
Date Acquired
August 21, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Sciences geologiques: Memoire
Volume: 85
ISSN: 0302-2684
Subject Category
Exobiology
Distribution Limits
Public
Copyright
Other
Keywords
Non-NASA Center
NASA Program Exobiology
NASA Discipline Number 52-20
NASA Discipline Exobiology

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