Application of S2O82-/FexOy Solid Super Acid as a Heterogeneous Fenton-Like Catalyst for the Degradation of Orange IV in Water

A new Fenton-like catalyst was prepared to degrade Orange IV in water by catalytic decomposition of H2O2. The optimal preparation conditions were discussed. The catalytic activity of catalyst was evaluated by the degradation of Orange IV and the decomposition of H2O2. The results show that solid super acid (S2O82-/FexOy) soaked in (NH4)2S2O8 is the most effective catalyst among the synthesized iron oxides soaked in other oxidants. The optimal conditions for solid super acid preparation are calcined at 500 for 2 h in the air.

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Pyrite cinder as a cost-effective heterogeneous catalyst in heterogeneous Fenton reaction: decomposition of H2O2 and degradation of Acid Red B

Water Science & Technology ◽

10.2166/wst.2014.389 ◽

2014 ◽

Vol 70 (9) ◽

pp. 1548-1554 ◽

Cited By ~ 2

Author(s):

Deli Wu ◽

Yanxia Liu ◽

Dong Duan ◽

Luming Ma

Keyword(s):

Catalytic Activity ◽

Metal Ions ◽

Cost Effective ◽

High Catalytic Activity ◽

Order Kinetic ◽

Pyrite Cinder ◽

Heterogeneous Fenton ◽

Kinetic Rate Constant ◽

Heterogeneous Fenton Reaction ◽

Decomposition Of H2o2

Pyrite cinder (PyC) was employed as a heterogeneous Fenton-like catalyst, and its catalytic activity was evaluated in view of the effects of catalyst dosage, pH and leaching metal ions. PyC showed significant reactivity, and the pseudo-first-order kinetic rate constant for decomposition of H2O2 and degradation of Acid Red B (ARB) were 3.4 and 14.89 (10−3 min−1) respectively when pH = 5. When 20 g/L PyC was added into 10 mM H2O2 solution in neutral pH, H2O2 could be completely degraded within 4 h, and more than 90% ARB was removed. Leaching metal ions from PyC were found to have little effect on decomposition of H2O2 or on degradation of ARB. PyC still had high catalytic activity after five successive runs. The decomposition mechanism of H2O2 was analyzed and the Haber–Weiss mechanism was employed in this paper. The electron spin resonance image showed •OH was produced and increased between 3 and 5 min in the PyC catalyzing H2O2 reaction, which demonstrated that PyC had a durable ability to produce •OH.

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Solid Super Acid of S2O82-/FexOy-CuOx Catalytic H2O2 to Remove Organic Pollutants in Water

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.150-151.1722 ◽

2010 ◽

Vol 150-151 ◽

pp. 1722-1725

Author(s):

Ying Jie Zhang ◽

Guo Rui Liu ◽

Da Peng Li ◽

Yue Xiao Tian ◽

Li Zhang ◽

...

Keyword(s):

Catalytic Activity ◽

Surface Area ◽

Organic Pollutants ◽

Degradation Rate ◽

Super Acid ◽

Decomposition Of H2o2

Solid super acid(S2O82-/FexOy-CuOx)was prepared and used as a Fenton-like catalyst to decompose H2O2 for the removal of orgnanic pollutants in water. The catalytic activity of S2O82-/FexOy-CuOx was evaluated by the degradation of organic pollutants and the decomposition of H2O2. The results show that the catalytic activity of S2O82-/FexOy-CuOx to decompose H2O2 is higher than that of S2O82-/FexOy. The reason for this may be due to the dissolved of Fe2+ from the S2O82-/FexOy-CuOx, and the concentration of dissolved of Fe2+ is proportional to the concentration of organic pollutants in water. The degradation rate of phenol by the catalyst of S2O82-/FexOy-CuOx is obviously higher than that by the catalyst of Fe2+ ion under the same conditions. BET measurements show that the surface area of S2O82-/FexOy-CuOx is larger than that of S2O82-/FexOy.

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Solid Super Acid of S2O82- /FexOy-CuOx Catalytic Degradation of Orange IV

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.239-242.182 ◽

2011 ◽

Vol 239-242 ◽

pp. 182-185 ◽

Cited By ~ 3

Author(s):

Ying Jie Zhang ◽

Guo Rui Liu ◽

Da Peng Li ◽

Yue Xiao Tian ◽

Li Zhang ◽

...

Keyword(s):

Catalytic Activity ◽

Reaction Rate ◽

Reaction Rate Constant ◽

Heterogeneous Fenton ◽

First Order ◽

First Order Kinetics ◽

Initial Ph ◽

Good Catalytic Activity ◽

Super Acid ◽

Pseudo First Order

Solid super acid (S2O82-/FexOy-CuOx) was prepared and used as a heterogeneous Fenton-like catalyst to decompose H2O2for the degradation of refractory dye Orange IV in water. The factors that affected the degradation of Orange IV were discussed in this heterogeneous Fenton-like system. The catalytic activity of S2O82-/FexOy-CuOxwas evaluated by the degradation of Orange IV and the decomposition of H2O2. The results show that the catalyst S2O82-/FexOy-CuOxhas a good catalytic activity. The reaction follows pseudo-first-order kinetics; the reaction rate constant has a good relationship with the concentration of H2O2. The degradation rate of Orange IV and the decomposition rate of H2O2increase with the increase of temperature and the dosage of catalyst whereas it decreases with the increase of the initial concentration of Orange IV and the initial pH.

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Catalytic activity of different iron oxides: Insight from pollutant degradation and hydroxyl radical formation in heterogeneous Fenton-like systems

Chemical Engineering Journal ◽

10.1016/j.cej.2018.07.035 ◽

2018 ◽

Vol 352 ◽

pp. 343-351 ◽

Cited By ~ 24

Author(s):

Ling Zhao ◽

Zhi-Rong Lin ◽

Xiao-hong Ma ◽

Yuan-Hua Dong

Keyword(s):

Catalytic Activity ◽

Hydroxyl Radical ◽

Iron Oxides ◽

Radical Formation ◽

Pollutant Degradation ◽

Heterogeneous Fenton

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Catalytic Decomposition of CCl2F2 over Solid Base Na2O/ZrO2

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.634-638.494 ◽

2013 ◽

Vol 634-638 ◽

pp. 494-499

Author(s):

Tian Cheng Liu ◽

Ping Ning ◽

Hong Bin Wang ◽

Lin Zhuan Ma ◽

Bin Li

Keyword(s):

Catalytic Activity ◽

Water Vapor ◽

Fixed Bed ◽

Catalytic Decomposition ◽

Catalyst Preparation ◽

Fixed Bed Reactor ◽

Solid Base ◽

High Concentration ◽

Zro2 Content ◽

Preparation Conditions

Catalytic decomposition of dichlorodifluoromethane (CCl2F2) in the presence of water vapor and oxygen was studied over a series of solid base that have different ZrO2 content using a fixed-bed reactor. CO2 and CClF3 were the main-products and no CO was detected as by-product. The decomposition activity depended on the calcination temperature and the Zr:Na. Calcined at 600 °C and Zr:Na=1:0.35 were the best catalyst preparation conditions. Adopting low concentration of oxygen and CCl2F2 and high concentration of water vapor is preferable to the achievement of high conversion of CCl2F2 and selectivity for CO2. The catalytic activity of Na2O/ZrO2 remained steady for 120 h on stream.

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Catalytic activity of metals in heterogeneous Fenton-like oxidation of wastewater contaminants: a review

Environmental Chemistry Letters ◽

10.1007/s10311-021-01185-z ◽

2021 ◽

Author(s):

Sajid Hussain ◽

Eleonora Aneggi ◽

Daniele Goi

Keyword(s):

Catalytic Activity ◽

Emerging Contaminants ◽

Influencing Factor ◽

Oxidation Products ◽

Metal Oxidation ◽

Heterogeneous Fenton ◽

Solution Ph ◽

Copper Manganese ◽

Different Types ◽

Metallic Catalyst

AbstractInnovations in water technology are needed to solve challenges of climate change, resource shortages, emerging contaminants, urbanization, sustainable development and demographic changes. In particular, conventional techniques of wastewater treatment are limited by the presence of poorly biodegradable organic matter. Alternatively, recent Fenton, Fenton-like and hybrid processes appear successful for cleaning of different types of liquid wastewaters. Here, we review the application of metallic catalyst-H2O2 systems in the heterogeneous Fenton process. Each metallic catalyst-H2O2 system has unique redox properties due to metal oxidation state. Solution pH is a major influencing factor. Catalysts made of iron and cerium form stable complexes with oxidation products and H2O2, thus resulting in reduced activities. Copper forms transitory complexes with oxidation products, but copper catalytic activity is restored during the reaction. Silver and manganese do not form complexes. The catalyst performance for degradation and mineralization decreases in the order: manganese, copper, iron, silver, cerium, yet the easiness of practical application decreases in the order: copper, manganese, iron, silver, cerium.

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The Synthesis of Iron Oxides with Different Phases or Exposure Crystal Planes and their Catalytic Property for Propene Oxidation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.463-464.189 ◽

2012 ◽

Vol 463-464 ◽

pp. 189-193

Author(s):

Kong Zhai Li ◽

Masaaki Haneda ◽

Masakuni Ozawa

Keyword(s):

Catalytic Activity ◽

Iron Oxides ◽

Catalytic Property ◽

Significant Influence ◽

Catalytic Performance ◽

Selective Growth ◽

Crystal Plane ◽

Low Density ◽

Fe2o3 Nanoparticles ◽

Propene Oxidation

Maghemite (γ-FeSubscript text2OSubscript text3) and hematite (α-Fe2O3) nanoparticles with various dominant exposure crystal planes were prepared by several different methods. The structure and the reducibility of these materials were investigated by XRD, Raman and H2-TPR technologies, and their catalytic performance for propene oxidation was also discussed. The maghemite (γ-FeSubscript text2OSubscript text3) showed a better reducibility than hematite (α-FeSubscript text2OSubscript text3), but its activity for propene oxidation is relatively lower. The exposure crystal plane of hematite has a significant influence on its catalytic activity for propene oxidation. Among the prepared four samples, the hematite-1 sample showed the best activity. The selective growth of any planes with a relative low density of Fe atoms for the α-FeSubscript text2OSubscript text3 catalyst would lead to an obvious decrease in the catalytic activity.

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