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COMPARATIVE STUDY OF LA0.7CA0.3MN0.95FE0.05O3 PEROVSKITES PREPARED BY DIFFERENT METHODS AND EFFECT OF PREPARATION ON CATALYTIC ACTIVITY FOR HYDROXYLATION OF BENZENE

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Last updated: 03 Jan 2025

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Chemistry

Abstract

Magnetic nanoparticles of La0.7Ca0.3Mn0.95Fe0.05O3 perovskites were synthesized by various wet chemical routes, namely co-precipitation, oxalate-gel and citrate-gel methods. Phase formation and crystal structure of the synthesized powders were examined by the X-ray diffraction (XRD) using the Rietveld analysis. The micro- structure was determined by means of scanning electron microscopy (SEM). Infrared transmission spectroscopy revealed that stretching and bending modes are influenced by preparation methods. Synthesis using the oxalate-gel method yielded incomplete reaction irrespective of the calcination temperature adopted. The citrate-gel method yielded better powder properties in terms of particle size and morphology as compared to co-precipitation synthesis. The highest activity for the catalytic oxidation of benzene to phenol in presence of H2O2 was obtained with the sample prepared by the citrate–gel method.

DOI

10.21608/absb.2011.7168

Keywords

XRD, perovskites, Catalytic activity, hydroxylation of benzene, SEM

Authors

First Name

MOHAMED

Last Name

THABET

MiddleName

S.

Affiliation

Department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt.

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Volume

22

Article Issue

Issue 1-A

Related Issue

1363

Issue Date

2011-06-01

Receive Date

2011-03-01

Publish Date

2011-06-01

Page Start

219

Page End

234

Print ISSN

1110-2535

Online ISSN

2636-3305

Article File

ABSB_Volume 22_Issue Issue 1-A_Pages 219-234.pdf

PDF . 1.4MB

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https://absb.journals.ekb.eg/article_7168.html

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https://absb.journals.ekb.eg/service?article_code=7168

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15

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Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

COMPARATIVE STUDY OF LA0.7CA0.3MN0.95FE0.05O3 PEROVSKITES PREPARED BY DIFFERENT METHODS AND EFFECT OF PREPARATION ON CATALYTIC ACTIVITY FOR HYDROXYLATION OF BENZENE

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Article

Created At

22 Jan 2023