Catalytic Supercritical Water Oxidation

这个项目考虑了在接近水临界点的温度下，多相催化剂对含氮有机物质在水介质中氧化的影响。候选催化剂包括钒、氧化铜、氧化铈/氧化镁、钯和铂。观察了催化剂在超临界水中的稳定性及其对含氮物质（如氨、吡啶、吡咯、甲基吡咯、苯胺或苯腈）氧化的影响。对所选体系的非均相和均相反应速率进行了建模，并确定了部分氧化产物。结果被描述为一组一致的反应途径。超临界水氧化已被证明是一种有效的方法来破坏许多危险化学品，但问题仍然存在，特别是在可能产生部分氧化产物。这项工作探索了使用催化剂对纤维、绝缘、农药、制药和炸药工业产生的废物进行完全破坏的方法。＊＊＊

9317618 Abraham This project considers the effects of a heterogeneous catalyst on the oxidation of organic species containing nitrogen in an aqueous medium at temperatures near the critical point of water. Candidate catalysts include vanadia, cupric oxide, ceria/magnesia, palladium, and platinum. The stability of the catalyst in supercritical water and its effects on the oxidation of nitrogen-containing species, such as ammonia, pyridine, pyrrole, methylpyrrole, aniline, or benzonitrile, are observed. The heterogeneous and homogeneous reaction rates for the chosen system are modelled and any partial oxidation products are identified. The results are described in terms of a consistent set of reaction pathways. Supercritical water oxidation has been shown to be an effective method to destroy many hazardous chemicals, but issues remain, particularly in the possible production of partial oxidation products. This work explores the use of a catalyst to issue complete destruction for wastes of the type produced by the fiber, insulation, pesticide, pharmaceutical, and explosives industries. ***