Journal
CHEMICAL ENGINEERING JOURNAL
Volume 175, Issue -, Pages 201-206Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2011.09.094
Keywords
Phenol; Pathways; Kinetics; Partial oxidation; Supercritical water
Categories
Funding
- National Natural Science Foundation of China [20777018, 21037001, 21076091]
- National Key Project for Basic Research of China [2008BAC321306-1]
- National High Technology Research and Development Program of China [2009AA06Z319]
- Research Fund for the Doctoral Program of Higher Education of China [20090172110028]
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This study reports on the pathways and kinetics of individual gaseous species involved in the partial oxidation of phenol in supercritical water. The pathway is a combination of supercritical water oxidation (SCWO) and supercritical water gasification (SCWG) processes. A kinetic model that involves oxygen is proposed that fits the experimental data and accurately predicts the effects of the O/phenol ratio on the decomposition of phenol. Specifically, at lower O/Phenol ratios, the gasification of acids and the water gas shift reaction predominated, increasing the amount of H(2) in the gaseous products. At higher O/Phenol ratios, on the other hand, the oxidation of acid intermediates and CO oxidation predominated, thereby increasing the amount of CO(2), while H(2) decreased. (C) 2011 Published by Elsevier B.V.
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