ORGN 32 |
| Ann M. McNally, Emily Moody, and Kristopher McNeill. Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, MN 55455 |
| Lignin is one of the core components of terrestrially derived organic matter and understanding its degradation is important in determining lignin’s role in the global carbon cycle. In the present research, the kinetics of the photodegradation of dimeric lignin model compounds containing a b-O-4 linkage and varying numbers of methoxy substituents on the aryl rings is studied. Rates of degradation of lignin in ethanol and Mississippi River Water by singlet oxygen, hydroxyl radical, and direct photolysis will be reported. Additionally, the dependence of degradation rate on pH and stereochemistry of the lignin model compound will be described in order to better understand the degradation mechanism. |
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Physical Organic Chemistry: Calculations, Mechanisms, Photochemistry and High Energy Species
8:00 AM-12:00 PM, Sunday, September 7, 2003 Sheraton New York -- Royal Ballroom A, Oral
Division of Organic Chemistry |