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Synthesis of pillared clays with Al–Fe and Al–Fe–Ce starting from concentrated suspensions of clay using microwaves or ultrasound, and their catalytic activity in the phenol oxidation reaction

Paper ID Volume ID Publish Year Pages File Format Full-Text
47347 46469 2009 10 PDF Available
Title
Synthesis of pillared clays with Al–Fe and Al–Fe–Ce starting from concentrated suspensions of clay using microwaves or ultrasound, and their catalytic activity in the phenol oxidation reaction
Abstract

A new methodology for the synthesis of pillared clays with Al–Fe and Al–Fe–Ce was developed, in which the clay is added directly to the pillaring solution, and microwaves or ultrasound are used in the synthesis of the pillaring solution as well as in the intercalation process. That methodology allows the volumes of water and the processing time to decrease significantly compared to the conventional method of synthesis of pillared clays. The analysis of XRD, XRF and adsorption–desorption isotherms show that the synthesized solids present more intense and homogeneous signals of pillaring and better texture properties than the clay pillared using the conventional method of synthesis. The XPS analysis shows that the Fe and Ce species are located preferably in the inner parts of the pillared clays. The catalytic activity of the pillared clays was evaluated in the phenol oxidation reaction in a diluted aqueous medium where the synthesized materials showed catalytic properties comparable to those of the materials synthesized through the conventional method reported in the literature.

Keywords
Pillared clays; Microwaves; Ultrasound; Keggin; Phenol oxidation
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Synthesis of pillared clays with Al–Fe and Al–Fe–Ce starting from concentrated suspensions of clay using microwaves or ultrasound, and their catalytic activity in the phenol oxidation reaction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 93, Issues 1–2, 25 November 2009, Pages 56–65
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
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