Author： SAVAGE* PHILLIP DUNN JENNIFER YU JIANLI
Publisher： Taylor & Francis Ltd
ISSN： 0010-2202
Source： Combustion Science and Technology, Vol.178, Iss.1-3, 2006-01, pp. : 443-465
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
This article summarizes recent research in homogeneous and heterogeneous catalytic oxidation in supercritical water. We consider both selective partial oxidation for chemical synthesis and complete oxidation for waste destruction. Recent advances in selective catalytic oxidation in supercritical water center around the conversion of p -xylene to terephthalic acid catalyzed homogeneously by MnBr 2 . Terephthalic acid yields of >90 mol% can be achieved from reactions at 400°C. Using water as the reaction medium provides genuine opportunities for both a more economical and more environmentally benign terephthalic acid production process. Recent advances in complete oxidation via catalysis in supercritical water include the demonstration of heteropolyacids as effective homogeneous oxidation catalysts, and alkali carbonates and carbons as effective heterogeneous catalysts. Additionally, progress has been made in screening transition metal oxide catalysts and determining the reaction-induced chemical and physical changes that take place in the hydrothermal environment. Bulk MnO 2 is a good catalyst for complete oxidation because it combines high activity, hydrothermal stability, activity maintenance, and resistance to metal leaching under reaction conditions.
Related content
Access to resources
Recommend
By Guolin Jing Mingming Luan Tingting Chen
Journal of Advanced Oxidation Technologies, Vol. 15, Iss. 1, 2012-01 ,pp. :
By Bartle Keith Gizir Ahmet Clifford Anthony
Reaction Kinetics and Catalysis Letters, Vol. 78, Iss. 1, 2003-01 ,pp. :
Waste Treatment by Supercritical Water Oxidation
Recent Patents on Chemical Engineering, Vol. 4, Iss. 1, 2011-04 ,pp. :