Regeneration of CuZnOx/γ-Al2O3 as a Heterogeneous Catalyst in CWPO Process

Yuan Zhang; Hai Sheng Yan; Rui Huang; Quan Yin; Shu Jie Ren; Wei Chang Xu

doi:10.4028/www.scientific.net/AMR.233-235.1437

Paper Titles

Reactive Distillation for Tert-Butyl Alcohol Dehydration with Dynamic Matrix Control
p.1419

Effects of Metal Cation on Disposal of CCl₄ into Diphenyl Carbonate at Low Temperature
p.1423

Progress in the New Fermentation Technologies of Fuel Ethanol
p.1427

Solvent-Free N-Alkylation of Phthalimide Catalyzed by Basic Ionic Liquids
p.1431

Regeneration of CuZnO_x/γ-Al₂O₃ as a Heterogeneous Catalyst in CWPO Process
p.1437

Breeding of Xylanase-Producing Strains by Ion Implantation and Studying of Fermentation Conditions
p.1442

Relationships Between Acidity and Catalytic Performance of Solid Acid in Synthesis of Linear Alkyl Benzene (LAB)
p.1447

Microwave-Assisted Hydrothermal Synthesis of Mesoporous V-MCM-41 Materials with Good Hydrothermal Stability
p.1451

Kinetics of Benzene Alkylation with Long Chain Olefin over Solid Acid Catalyst
p.1455

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Regeneration of CuZnOx/γ-Al2O3 as a Heterogeneous...

Regeneration of CuZnO_x/γ-Al₂O₃ as a Heterogeneous Catalyst in CWPO Process

Abstract:

This paper evaluates the catalytic effectiveness of CuZnO_x/γ-Al₂O₃ catalyst for the degradation of an azo dye, acid red GR, using H₂O₂ as an oxidant, under very mild conditions (atmospheric pressure and t = 40 ). In the catalytic wet peroxide oxidation (CWPO) process, the results show that it is possible to remove 80% of COD during the initial 30 h. But a considerable drop of catalytic activity is found after prolonged run. As characterization datas shown, the deactivation of the catalyst is caused by the depositon of intermediates on the surface and serious coverage of the active sites. However, calcination method which is possible to burn the organic species that trapped in the catalyst reaches complete restoration of the spent catalyst.