Mesoporous Silica Based Catalysts for the Oxidation of Azodyes in Waste Water


Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1134/S2070050416020069

Ключевые слова: mesoporous silica, Fenton heterogeneous catalysts, oxidative destruction of dyes, waste water, Catalyst activity, Catalysts, Catalytic oxidation, Gas adsorption, Iron, Mesoporous materials, Metal ions, Oxidation, Silica, Silica gel, Temperature, Wastewater, Catalyst concentration, Heterogeneous catalyst, Iron containing catalysts, Laboratory conditions, Low-temperature nitrogen, Organic admixtures, Porous structures, Catalyst supports

Аннотация: Iron-containing catalysts supported on mesoporous silica samples that differ in the methods of their preparation (commercial KSS silica gel, MSM-41 mesoporous silicalite, and silica gels obtained under laboratory conditions by means of spray drying and drying in supercritical CO2) are synthesized. Their porous structure is studied Показать полностьюvia low-temperature nitrogen adsorption. Their catalytic activity and stability in the oxidation of carmoisine (an anionic dye) with a 3% hydrogen peroxide solution in water at 60 degrees C and pH 3 are compared. The initial carmoisine and catalyst concentrations in solution are 20 mg/L and 3 g/L, respectively, and the molar H2O2/carmoisine ratio is 459/1. The KSS-based catalyst demonstrates the highest activity and stability with respect to the outwashing of an active component into a solution: the conversion of carmoisine on this catalyst is as high as 99% for 30 min, while the concentration of iron ions in solution (0.27 mg/L) does not exceed the maximum allowable concentration. After the support is preimpregnated with aluminum, the degree of iron outwashing into a solution is more than halved. The synthesized catalysts are of interest with regard to the purification of waste water containing organic admixtures.

Ссылки на полный текст



Выпуск журнала: Vol. 8, Is. 2

Номера страниц: 128-133

ISSN журнала: 20700504

Место издания: MOSCOW



  • Kon'kova T.V. (Mendeleev Russian University of Chemical Technology)
  • Gordienko M.G. (Mendeleev Russian University of Chemical Technology)
  • Alekhina M.B. (Mendeleev Russian University of Chemical Technology)
  • Men'shutina N.V. (Mendeleev Russian University of Chemical Technology)
  • Kirik S.D. (Siberian Federal University)

Вхождение в базы данных