Wacker PdCl2–CuCl2 catalytic oxidation process: Oxidation of limonene

2002 ◽  
Vol 3 (9) ◽  
pp. 435-440 ◽  
Author(s):  
Alexandre D. Silva ◽  
Maria L. Patitucci ◽  
Humberto R. Bizzo ◽  
Eliane D'Elia ◽  
O.A.C. Antunes
Keyword(s):  
Catalytic Oxidation ◽  
Oxidation Process

Phenolic Wastewater Treatment by Microwave-Induced H2O2-Fe (III)-Cu (II)/γ-Al2O3 Catalytic Oxidation Process

2013 ◽  
Vol 777 ◽  
pp. 101-105
Author(s):  
Jie Zhang ◽  
Wei Qian Pan ◽  
Tong Zheng ◽  
Peng Wang
Keyword(s):  
Catalytic Oxidation ◽  
Oxidation Process ◽  
Synthetic Wastewater ◽  
Reaction Rate Constants ◽  
Toc Removal ◽  
First Order Kinetics ◽  
Phenolic Pollutants ◽  
Phenolic Wastewater ◽  
Ph Range ◽  
Induction Stage

To achieve efficient removal of phenolic pollutants in water, the catalyst of Fe (III)-Cu (II)/γ-Al2O3 was prepared. In the presence of Fe (III)-Cu (II)/γ-Al2O3, microwave-induced hydrogen peroxide (H2O2) catalytic oxidation process was conducted for the treatment of synthetic wastewater containing PNP, a representative of phenolic pollutants. Effectiveness of the process and factors influencing PNP removal were investigated and results showed microwave-induced H2O2-Fe (III)-Cu (II)/γ-Al2O3 process could achieve 99.41% PNP removal percentage, corresponding to 77.9% TOC removal in a given condition. The process remained effective in the 2-8 pH range with high reusability of Fe (III)-Cu (II)/γ-Al2O3 catalyst. The kinetics study showed microwave-induced H2O2-Fe (III)-Cu (II)/γ-Al2O3 process could be divided into microwave induction stage and catalytic oxidation stage, both of which fitted first-order kinetics, with reaction rate constants of 0.0453 min-1 and 4.7552 min-1 respectively.

Kinetic Model of the 1,2-Propanediol Oxidation Reaction in the Presence of 3wt%Pd/α-Al2O3 Catalyst

2021 ◽  
Vol 903 ◽  
pp. 143-148
Author(s):  
Svetlana Cornaja ◽  
Svetlana Zhizhkuna ◽  
Jevgenija Vladiko
Keyword(s):  
Activation Energy ◽  
Lactic Acid ◽  
Kinetic Model ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Oxidation Reaction ◽  
Main Product ◽  
Oxidation Process ◽  
Water Solution ◽  
Reaction Conditions

Supported 3wt%Pd/α-Al₂O₃ catalyst was tested in selective oxidation of 1,2-propanediol by molecular oxygen. It was found that the catalyst is active in an alkaline water solution. Lactic acid was obtained as the main product of the reaction. Influence of different reaction conditions on 1,2-PDO conversion and oxidation process selectivity was studied. Partial kinetic orders of the reaction with respect to 1,2-propanediol, c0(NaOH), p(O2), n(1,2-PDO)/n(Pd)) were determined and an experimental kinetic model of the catalytic oxidation reaction was obtained. Activation energy of the process was calculated and was found to be about 53 ± 5 kJ/mol.

Oxytetracycline degradation and toxicity evolution by catalytic oxidation process over sludge derived carbon

2019 ◽  
Vol 7 (1) ◽  
pp. 102889 ◽  
Author(s):  
Xiyang Liu ◽  
Fei Huang ◽  
Yide He ◽  
Yang Yu ◽  
Yong Lv ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Oxidation Process

The Study of Catalytic Oxidation of NOx Using Mn3O4/GO/PMS

2013 ◽  
Vol 834-836 ◽  
pp. 458-461
Author(s):  
Xiu Zhi Sun ◽  
Deng Xin Li
Keyword(s):  
Graphene Oxide ◽  
Manganese Oxide ◽  
Catalytic Oxidation ◽  
Advanced Oxidation Process ◽  
Oxidation Process ◽  
Advanced Oxidation ◽  
Catalyst System ◽  
Sulfate Radicals ◽  
Waste Gas

The catalytic oxidation of NOx from waste gas was investigated using advanced oxidation process based on sulfate radicals. The manganese oxide immobilized on graphene oxide (GO) can activate peroxymonosulfate (PMS) for the oxidation of NOx in water. The Mn3O4/GO catalyst system exhibited efficient activity for NOx oxidation when the Mn3O4/GO catalyst loaded an optimum Mn3O4. In addition, 52.28% oxidation could be achieved within 60 min with 0.25 mM catalyst, and 2 mM PMS. Therefore, the results may have significant technical implication for utilizing Mn2+/PMS to oxidize NOx for offgas treatment.

scholarly journals Optimization of isopropyl alcohol degradation by microwave-induced catalytic oxidation process

2019 ◽  
Vol 9 (3) ◽  
pp. 213-224
Author(s):  
Quynh Thi Phuong Tran ◽  
Chi-Hsu Hsieh ◽  
Tung-Yu Yang ◽  
Hsin-hsin Tung
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Oxidation ◽  
Working Conditions ◽  
Isopropyl Alcohol ◽  
Oxidation Process ◽  
Removal Rate ◽  
Response Variability ◽  
Manufacturing Industries ◽  
Independent Variables ◽  
Central Composite

Abstract Isopropyl alcohol (IPA) is a common waste solvent from the semiconductor and optoelectronic manufacturing industries. The current study assesses the feasibility of microwave-induced catalytic oxidation process for synthetic IPA wastewater. The effect of three independent variables, including oxidant (hydrogen peroxide), initial IPA concentration, and dosage of catalyst (granular activated carbon, GAC) on the IPA removal efficiency, were investigated and optimized by response surface methodology based on central composite design. The estimated optimal working conditions were as follows: [H2O2] <0.132 M, GAC dosage = 108–123 g/L, and initial [IPA] = 0.038–0.10 M. The findings indicated that the dosage of GAC and the initial IPA concentration strongly affected the overall IPA removal. The values of R2 = 0.9948 and adjusted R2 = 0.9901 demonstrated that the response variability could be explained by the model expressing a satisfactory quadratic fit. Finally, the H2O2/GAC/MW process showed a faster and higher IPA removal rate than other processes tested.

Determination and toxicity evaluation of the generated byproducts from sulfamethazine degradation during catalytic oxidation process

Chemosphere ◽  
2019 ◽  
Vol 226 ◽  
pp. 103-109 ◽  
Author(s):  
Xiyang Liu ◽  
Fei Huang ◽  
Yang Yu ◽  
Yongan Jiang ◽  
Kun Zhao ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Oxidation Process ◽  
Toxicity Evaluation
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