Highly Efficient NaNO₂‐Catalyzed Destruction of Trichlorophenol Using Molecular Oxygen

The Pd-catalyzed hydrodechlorination of chlorophenols in aqueous solutions under mild conditions: A promising approach to practical use in wastewater

“…A large number of techniques have been investigated for the treatment of wastewater containing chlorinated organic compounds and the available techniques mainly include wet catalytic oxidation [1,3], photochemical treatment [4], biological degradation [5] and catalytic hydrogenation [6]. Among these methods mentioned above, catalytic hydrogenation (namely hydrodechlorination) offers greater flexibility and safety with mild conditions because no toxic compounds are produced during the hydrodechlorination procedure of chlorinated organic com- * Corresponding author.…”

Selective Oxidation of Organic Compounds—Sustainable Catalytic Reactions with Oxygen and without Transition Metals?

“…The new methods described here [6,19] can contribute. The Fe-TAML catalyst [16,17] for total oxidations exhibits very low toxicity, and the system with oxygen and sodium nitrite for the total oxidation of chlorophenols is characterized by a high degree of mineralization.…”

“…A number of catalytic oxidation reactions of organic substrates with molecular oxygen are possible even without transition metals, [6,19] but transition metals cannot (yet) be dispensed with in most oxidations.…”

“…[16] In analogy to their work on selective oxidations of alcohols without heavy metals (method 8 in Table 1) [6] the same Chinese group succeeded in the oxidation of 2,4,6-trichlorophenol (TCP) with dioxygen as the oxidant and sodium nitrite as the catalyst [19] in an autoclave at a pressure of 0.5 Mpa. Possibly the chlorophenol acts through the phenol/ phenoxyl radical redox pair with nitrite (redox pair NO 2 /NO) as cocatalyst.…”

Chemical and toxicological evaluation of an emerging pollutant (enrofloxacin) by catalytic wet air oxidation and ozonation in aqueous solution

“…The present study focuses on the development and application of a catalytic system (CWAO) which uses inexpensive and readily available oxidants and catalysts, NaNO 2 and FeCl 3 , respectively (Liang et al, 2005;Wang et al, 2007). In addition, ozonation is also being applied to degrade the chosen antibiotic in order to evaluate its suitability for industrial application by comparing the obtained results by CWAO.…”