β Scribed by Alexander E. Eliyas; Velislava V. Ivanova; Luchezar T. Prahov; Luchezar A. Petrov
No coin nor oath required. For personal study only.
The catalytic properties of supported cobalt phthalocyanines, containing different substitutes, in oxidation of ethylmercaptan to disulphide, have been studied in a flow system. The inclusion of electrondonor substitutes in the phthalocyanine molecule leads to an increased catalytic activity, while electronacceptor substitutes decrease it. In the absence of NaOH the productivity of the most active catalyst samples is unstable and dlrops quicker than that of the less active ones. In the presence of NaOH the activity of the phthalocyanines is stable and high. This fact is explained and interpreted in terms of the mechanism of the oxidation process.
π SIMILAR VOLUMES
Polymeric cobalt(H)-phthalocyanine exhibited much higher specific catalytic activity in sulfide ion oxidation than the monomeric counterpart. Cobalt disproportionation, 2C02 + \*Co' + + Co3+, was observed with the polymeric phthalocyanine in alkali medium. A concerted process of the oxidation and re