Fe-exchanged zeolites as materials for catalytic wet peroxide oxidation. Degradation of Rodamine G dye

Zeolite Y encapsulated with Fe-TiO2 for ultrasound-assisted degradation of amaranth dye in water

“…Different preparation methods can be used to introduce the Fe ions into suitable supports such as impregnation and ion-exchange method. However, the preparation method can affect the catalytic activity [17]. Minimization of Fe leaching from the heterogeneous catalyst can be achieved by using a suitable synthesis method, the composition of the active component and the use of a suitable support [16].…”

Highly efficient decomposition of Remazol Brilliant Blue R using tubular reactor coated with thin layer of PdO

“…This resulted in complete decomposition of dye at a relatively mild temperature (300 C) and pressure (10 MPa) conditions. In literature, catalytic decomposition of RBBR is reported using copper complex (Verma et al, 2004), where, only decolorization of solution was obtained within a long reaction time of 24 h. Herrera et al, (Herrera et al, 2001) observed a 40% carbon removal at 275 C. Whereas, in contrast to simple catalytic dye decomposition processes (Swaminathan et al, 2003;Zhan et al, 2011;Prihodko et al, 2011), 99.9% TOC removal was attained within a short residence time of 3.2 s.…”

“…This disadvantage can be overcome by using heterogeneous catalysts. Metal/metal oxides supported on alumina, silica, zeolites and carbon are examples of the heterogeneous catalytic system, providing a high activity for degradation of dyes using hydrogen peroxide as an oxidant (Prihodko et al, 2011;Pouran et al, 2014;Liu and Sun, 2007;Hanna et al, 2008;Huang et al, 2009;Fathima et al, 2008;Bradu et al, 2010).…”

Heterogeneous Fenton-like oxidation of crystal violet using an iron loaded ZSM-5 zeolite

“…5 in the range of 650-4,000 cm −1 and 2,500-4,000 cm −1 as inset for FeZSM-5 (42). The broad band in the range of 3,000-3,500 cm −1 shows the Fe-OH vibration.…”

“…These materials are effective catalysts for the oxidative breakdown of phenol [31,32], a number of carboxylic acids [33], and ethanol [34] in water. In addition to these, Fe-loaded ZSM-5 zeolite catalysts were used efficiently for decolorization of different kinds of dyes such as Orange II [35][36][37], anthraquinone dye Reactive Brilliant Blue KN-R [38], Rhodamine 6G [39][40][41][42], and Reactive Red 141 [43]. The use of hydrogen peroxide as an oxidant is also helpful, since no additional pressure is required, as in the case of gaseous oxidants, such as O 2 or O 3 .…”