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Carbon dioxide production in the oxidation of organic acids by Cerium(IV) under aerobic and anaerobic conditions
Author(s) -
Butler Kara,
Steinbock Oliver,
Steinbock Bettina,
Dalal Nar S.
Publication year - 1998
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/(sici)1097-4601(1998)30:12<899::aid-kin4>3.0.co;2-p
Subject(s) - chemistry , oxalic acid , malonic acid , stoichiometry , cerium , glyoxylic acid , inorganic chemistry , carbon dioxide , formaldehyde , oxygen , organic acid , anaerobic exercise , organic chemistry , physiology , biology
The stoichiometry of CO 2 production during the ceric oxidation of various organic acids is measured under conditions with organic acid excess. Measurements utilize a photometric methodology. For anaerobic conditions stoichiometries [CO 2 ] produced :[Ce(IV)] reduced of about 0 (malonic acid), 0.5 (e.g., glyoxylic acid), and 1.0 (oxalic acid) are found. Oxalic acid showed an oxygen‐induced decrease of CO 2 production, while other compounds such as malonic acid increased the amount of produced CO 2 or showed no changes (e.g., tartronic acid). In the case of mesoxalic acid the stoichiometry is increased from about 0.5 to 2.0 due to the presence of molecular oxygen. The results are discussed on the basis of simple reaction mechanisms demonstrating that useful information on reaction pathways and intermediates can be extracted from these simple measurements. © 1998 John Wiley & Sons, Inc. Int J Chem Kinet 30: 899–902, 1998