Comparative Study on the Effect of Support for Nanonickel Catalyst in Reduction of Nitrophenols - Egyptian Knowledge Bank

1379

Comparative Study on the Effect of Support for Nanonickel Catalyst in Reduction of Nitrophenols

Article

Last updated: 01 Jan 2025

Subjects

Abstract

THE CATALYTIC reduction of para- and ortho- nitrophenols to the corresponding aminophenols was investigated over Ni/TiO 2 catalysts prepared by reduction method. Hydrazine hydrate in the presence of nickel ions supported on TiO2 was used in the preparation of nanonickel catalyst over rutile and anatase. Further decomposition of the hydrazine hydrate on the nickel atoms surfaces yields nascent hydrogen atoms that efficiently reduce the nitro groups. Many techniques such as XRD, IR, TEM and UV-Visible absorption spectroscopy have been used. TEM shows the formation of nanonickel clusters on TiO2. IR analysis confirms the appearance of the characteristic peaks of only ortho or para aminophenols. The kinetics of reduction reaction was studied. Catalyst recovery and factors affecting the reduction reaction such as phenol concentration, pH, catalyst loading and temperature have been studied. The obtained data and kinetic results show that the conversion percentage reaches 100% within few minutes. The results indicate that the nanonickel loaded over rutile or anatase TiO2 exhibit nearly the same catalytic activity in reduction of nitrophenols but more active than nanonickel in zeolite catalyst.

DOI

10.21608/ejchem.2011.1379

Keywords

Nickel nanocatalyst, Rutile, anatase, Nitrophenols, Aminophenols and Reduction

Volume

Article Issue

Related Issue

303

Issue Date

2012-02-01

Receive Date

2010-12-09

Publish Date

2011-02-28

Page Start

Page End

Print ISSN

0449-2285

Online ISSN

2357-0245

Article File

EJCHEM_Volume 54_Issue 1_Pages 55-68.pdf

PDF . 421.2kB

Link

https://ejchem.journals.ekb.eg/article_1379.html

Detail API

https://ejchem.journals.ekb.eg/service?article_code=1379

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Type Code

292

Publication Type

Journal

Publication Title

Egyptian Journal of Chemistry

Publication Link

https://ejchem.journals.ekb.eg/

MainTitle