Catalytic wet oxidation of phenol with Fe–ZSM-5 catalysts

Yan, Ying; Jiang, Songshan; Zhang, Huiping

doi:10.1039/c5ra19832a

Cited by 32 publications

(18 citation statements)

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“…However the present leaching results are better than most of the reported values 7,21,61,62 . However the present leaching results are better than most of the reported values 7,21,61,62 .…”

Section: Efficiency Of the Synthesized Fe-zsm-5 For Other Dues And MIcontrasting

confidence: 80%

“…In addition to conventional methods, Fenton oxidation, an advanced and efficient oxidation process is used for the treatment of recalcitrant wastewaters [3][4][5] . Iron based catalysts supported on zeolites supports have been found more efficient compared to the other supported iron catalysts 15,[18][19][20][21] . 1), to produce highly oxidative and non-selective species with a redox potential of 2.80eV which lead to the degradation of recalcitrant organic contaminants 6 .…”

Section: Introductionmentioning

confidence: 99%

“…It utilizes H 2 O 2 and iron-based catalysts (Eq. Iron oxides supported on the ZSM-5 zeolites have shown high surface area, extraordinary stability, and remarkable porosity [21][22][23] . To overcome these difficulties, heterogeneous processes were considered as viable and attractive alternatives.…”

Section: Introductionmentioning

confidence: 99%

“…1), to produce highly oxidative and non-selective species with a redox potential of 2.80eV which lead to the degradation of recalcitrant organic contaminants 6 . Fine-size iron oxide particles cause to suppress reaction between H 2 O 2 and iron, and the formed Fe +3 / Fe +2 complexes on the support (ZSM-5) surface 21,24 . In heterogeneous Fenton process, generally a porous matrix is used to hold the active catalyst phase [9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

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Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

et al. 2016

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Iron based heterogeneous catalysts are widely used in many industrial applications includingFenton Oxidation Processes (FOPs) to treat the effluents containing recalcitrant contaminants such as dyes. In this work, Metal Organic Framework (MOF) derived iron nano oxide particles supported on ZSM-5 Zeolite were synthesized under the optimized experimental conditions. Central Composite Design (CCD) method was employed to optimize the yield of the catalyst. The catalyst was then characterized using EDX, SEM, HRTEM, FTIR, STA and BET. Subsequently, the catalytic activity of the catalyst in Fenton Oxidation process was evaluated based on the degradation of the model azo dyes, Acid Blue 113, Methyl Orange, and Reactive Black. The optimized experimental yield was 81.5%, which was in agreement with the CCD predicted. Apart from high catalyst's yield, excellent mineralization efficiency was obtained where 77%, 71 % and 68% of Total Organic Carbon (TOC) removal were achieved for Acid Blue 113, Methyl Orange, and Reactive Black 5, respectively. Based on the yield and activity, it was concluded that the synthesized Fe-ZSM-5 is a promising catalyst for Fenton oxidation process.The specific surface area of the support and catalyst (in m2/g) was determined by measuring the volume of N 2 gas, using the BET (Brunauer-Emmett-Teller) method. Table S3 shows the specific surface areas, pore width, and pore volume. Presence of nano sized iron particles reduced the specific surface area of ZSM-5 from 297 to 241m 2 /g. Similarly, the pore volume was also changed from 0.17 to 0.11cm 3 /g. BET analysis confirmed the filling of iron oxide particles in the pores of ZSM-5 matrix 28 . Synthesized Fe-ZSM-5 had greater pore size (2.66 nm) than the parent ZSM-5 (2.45 nm).This may be attributed to multilayer formation of nano sized particles on ZSM-5 support, which can be seen FESEM images (Fig. 2). Changes in the pore size, and surface area were well supported by the literature 7, 28, 42 .Comparison Plot for Fe-MOFs.The optimization of the results obtained through experiments was carried out using Response Surface Methodology (RSM). Responses were kept within the desired ranges while the maximum yield was targeted. The suggested optimized values of temperature (33 o C), time (4 h) and stirrer speed (245 rpm) were validated through the experiment. The approximate yield of the Fe-complexes was 81.5%. There was a good agreement between the predicted and experimental results under optimized environment.Furthermore, in the impregnation step, 82-84% yield of Fe-ZSM-5 was observed. The yield can be further increased up to 90% with an efficient filtration system. Efficiency and Stability Evaluation of the Fe-ZSM-5 catalystExperiments exhibiting Fenton oxidation were carried out to degrade and decolorize three selected dyes. In order to examine the adsorption, the preliminary study was conducted with 100 mg/L of dye concentration. After four hours, percentage of adsorbed Acid Blue 113,

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“…However the present leaching results are better than most of the reported values 7,21,61,62 . However the present leaching results are better than most of the reported values 7,21,61,62 .…”

Section: Efficiency Of the Synthesized Fe-zsm-5 For Other Dues And MIcontrasting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

et al. 2016

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“…We have known that the iron species of our Fe 2 O 3 -ZSM-5 catalysts are extra-framework Fe 3+ species which present in the form of Fe 2 O 3 . According to Yan et al 's [66] research, extra-framework Fe 3+ species perform higher activity in organic degradation than the framework Fe 3+ , and this can be the reason of high m -cresol conversion in this work. The result is consistent with H 2 O 2 conversion, implying that Fe 2 O 3 -ZSM-5 catalysts are active for m -cresol oxidation.…”

Section: Resultsmentioning

confidence: 78%

The preparation of Fe ₂ O ₃ -ZSM-5 catalysts by metal-organic chemical vapour deposition method for catalytic wet peroxide oxidation of m -cresol

Yang¹,

Zhang²,

Yan³

2018

R. Soc. open sci.

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Fe2O3-ZSM-5 catalysts (0.6 wt% Fe load) prepared by metal-organic chemical vapour deposition (MOCVD) method were evaluated in the catalytic wet peroxide oxidation (CWPO) of m-cresol in a batch reactor. The catalysts have a good iron dispersion and small iron crystalline size, and exhibit high stability during reaction. In addition, the kinetics of the reaction were studied and the initial oxidation rate equation was given. Catalysts were first characterized by N2 adsorption–desorption isotherms, scanning electronic microscopy, energy-dispersive spectroscopy, X-ray diffraction and X-ray photoelectron spectroscopy. Results show that extra-framework Fe3+ species (presenting in the form of Fe2O3) are successfully loaded on ZSM-5 supports by MOCVD method. Performances of catalysts were tested and effects of different temperature, stirring rate, catalyst amount on hydrogen peroxide, m-cresol, total organic carbon (TOC) conversion and Fe leaching concentration were studied. Results reveal that catalytic activity increased with higher temperature, faster stirring rate and larger catalyst amount. In all circumstances, m-cresol conversion could reach 99% in 0.5–2.5 h, and the highest TOC removal (80.5%) is obtained after 3 h under conditions of 60°C, 400 r.p.m. and catalyst amount of 2.5 g l−1. The iron-leaching concentrations are less than 1.1 mg l−1 under all conditions. The initial oxidation rate equation −rA0=7.2×1011e−81300/RTCA is obtained for m-cresol degradation with Fe2O3-ZSM-5 catalysts.

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Influence of zeolite carriers on the dyes degradation for framework Fe-doped zeolite catalysts

Deng

Zhang

Zhai

et al. 2019

J Sol-Gel Sci Technol

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Catalytic wet oxidation of phenol with Fe–ZSM-5 catalysts

Abstract: Systematic study of catalytic wet oxidation of phenol over Fe–ZSM-5 and Fe2O3/ZSM-5 catalysts.

Cited by 32 publications

References 44 publications

Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

The preparation of Fe ₂ O ₃ -ZSM-5 catalysts by metal-organic chemical vapour deposition method for catalytic wet peroxide oxidation of m -cresol

Influence of zeolite carriers on the dyes degradation for framework Fe-doped zeolite catalysts

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Catalytic wet oxidation of phenol with Fe–ZSM-5 catalysts

Abstract: Systematic study of catalytic wet oxidation of phenol over Fe–ZSM-5 and Fe2O3/ZSM-5 catalysts.

Cited by 32 publications

References 44 publications

Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

Treatment of textile effluent containing recalcitrant dyes using MOF derived Fe-ZSM-5 heterogeneous catalyst

The preparation of Fe 2 O 3 -ZSM-5 catalysts by metal-organic chemical vapour deposition method for catalytic wet peroxide oxidation of m -cresol

Influence of zeolite carriers on the dyes degradation for framework Fe-doped zeolite catalysts

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The preparation of Fe ₂ O ₃ -ZSM-5 catalysts by metal-organic chemical vapour deposition method for catalytic wet peroxide oxidation of m -cresol