FULL PAPERS
Jennifer B. Dunn et al.
products, but such products were clearly present in many of the
experiments because the sound of escaping gas accompanied
the opening of the reactors. We recovered and isolated a
DMSO-insoluble solid residue that formed during the reac-
tion. Previous analysis showed that these solids consisted
largely of iron oxide, and are most likely corrosion products.
All product analyses were conducted on a high-performance
liquid chromatograph (HPLC) equipped with an Alltech LC-
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[
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[
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flow rate of 1.5 mL/min was maintained. We used ultraviolet
detection at 254 nmand the gradient elution method devel-
oped by Viola and Cao.[ Experimental calibration curves
were developed for each compound to facilitate the quantifi-
cation of product yields. These molar yields were calculated by
dividing the number of moles of each product formed by the
initial number of moles of p-xylene loaded into the reactor.
23]
Acknowledgements
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16] W. Partenheimer, J. Mol. Catal. 2001, 174, 29.
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We are grateful to Dr. Phil Nubel (BP research) for several
helpful discussions. We also acknowledge financial support
from the National Science Foundation (CTS-9985456) and the
donors of the Petroleum Research Fund (34644-AC9) admin-
istered by the American Chemical Society.
2
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