Fig. 11
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Functional chemical group composition [X]/[-NH2] for oxygen-bearing groups -OH, -COOH, -C(O)-, -C(O)O-, and -O- (solid red lines) and nitrogen-bearing groups -NC(O)- and -CN (dashed blue lines) as a function of temperature. The desorption profiles are simulated with a first-order Polanyi-Wigner equation, variable surface coverages, and a heating rate of 1 K century−1.
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