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Permeable membrane mass spectrometry of products of electrochemical oxidation of carboxylate ions

Journal Article · · Anal. Chem.; (United States)
DOI:https://doi.org/10.1021/ac00266a020· OSTI ID:6458839
The volatile products of Kolbe oxidation of carboxylate ions in water and Me/sub 2/SO solvents have been detected by permeable membrane mass spectrometry (PERMS). Deconvolution of the mass spectral data by factor analysis allows estimation of carbon dioxide, oxygen, and ethane during the course of electrolysis. In water solutions, electrolysis of water occurs in competition with Kolbe oxidation, and it is possible to follow the individual current efficiencies for these two processes as a function of potential. In Me/sub 2/SO solutions, the oxidation of propionate and acetate led to the same products, CO/sub 2/ and ethane, but in different stoichiometric proportions. Efficiencies for ethane production are twice as large for propionate as for acetate. 23 references, 6 figures, 8 tables.
Research Organization:
Ohio State Univ., Columbus
OSTI ID:
6458839
Journal Information:
Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 56:2; ISSN ANCHA
Country of Publication:
United States
Language:
English