Journal
GREEN CHEMISTRY
Volume 17, Issue 8, Pages 4452-4458Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5gc01272d
Keywords
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Funding
- National Natural Science Foundation of China [21173234, 21273253, 21321063]
- Chinese Academy of Sciences [KJCX2.YW.H30]
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Efficient cleavage of a C-O bond in lignin and its model compounds is of great importance for transformation of lignin into fuel and value-added chemicals. In this work, we explored the transformation of a lignin model compound benzyl phenyl ether (BPE) at 150 degrees C by using Pd/C as the catalyst under an argon atmosphere in the presence of Na2CO3 and N-methyl-2-pyrrolidone (NMP). The effects of different reaction parameters such as the amounts of Pd/C, Na2CO3 and NMP as well as reaction times were investigated. It was found that Pd/C played a key role in the conversion of BPE. At the same time, Na2CO3 and NMP also promote the transformation effectively. The yields of phenol and toluene reached 71.6% and 50.4%, respectively. Analytical results of electron paramagnetic resonance (EPR) indicated that the reaction proceeded through a free-radical reaction mechanism. Control experiments indicated that direct pyrolysis of BPE was the main route to generate the target products.
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