fulltext.study @t Gmail

Synthesis of the mixed oxides of iron and quartz and their catalytic activities for the Fenton-like oxidation

Paper ID Volume ID Publish Year Pages File Format Full-Text
52284 46867 2008 5 PDF Available
Title
Synthesis of the mixed oxides of iron and quartz and their catalytic activities for the Fenton-like oxidation
Abstract

Four mixed oxides of iron and silica including quartz/amorphous iron(III) oxide (Q1), quartz/maghemite (Q2), quartz/magnetite (Q3) and quartz/goethite (Q4) were prepared and characterized by XRD, BET surface area and chemical analyses. Catalytic activity of four mineral oxides was examined by employing methyl red (MR) as a model compound for the Fenton-like oxidation at two pH values (5 and 7). It was found that their catalytic activities follow the order Q4 > Q1 > Q2 > Q3 at pH 5, while the trend is modified at pH 7. Dye adsorption to the catalyst changed significantly with the pH value. The highest catalytic activity of all solids at pH 5 is probably due to the electrostatic interactions between the dye molecules and surface functional groups of catalyst at this pH value. The mixed oxides catalysts exhibited low iron leaching, good structural stability and no loss of performance in second reaction cycle.

Keywords
Mixed oxides; Fenton-like; Oxidation; Heterogeneous catalysts; Electrostatic interactions
First Page Preview
Synthesis of the mixed oxides of iron and quartz and their catalytic activities for the Fenton-like oxidation
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 955–959
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us