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100% selective yield of m-nitroaniline by rutile TiO2 and m-phenylenediamine by P25-TiO2 during m-dinitrobenzene photoreduction

Paper ID Volume ID Publish Year Pages File Format Full-Text
50722 46811 2014 4 PDF Available
Title
100% selective yield of m-nitroaniline by rutile TiO2 and m-phenylenediamine by P25-TiO2 during m-dinitrobenzene photoreduction
Abstract

•Selective reduction of m-DNB to 100% m-NA by R-TiO2 under 8 h UV irradiation•P25-TiO2 catalyst gives 100% m-PDA from m-DNB under 4 h of UV irradiation.•m-NA yield from m-DNB reduction increases with the increased R-TiO2 content.•Iso-propanol is found to be the best solvent for both m-NA and m-PDA formation.

Photoreduction of m-dinitrobenzene (25 μmol) in the deaerated aqueous iso-propanol exhibits 100% selective yield of m-nitroaniline (25 μmol) by rutile TiO2 (50 mg) or m-phenylenediamine (25 μmol) by P25-TiO2 separately under 8 and 4 h of UV light irradiation (125 W Hg arc, 10.4 mW/cm2), respectively. It revealed that insertion of a second –NO2 in nitrobenzene ring has an important role in expediting –NO2 reduction to –NH2 as compared to a negligible reduction of nitrobenzene under similar conditions, indicating that electron withdrawing groups lower the electron density on –NO2 present on meta position and favor quick reduction of the –NO2 group.

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Keywords
WZCQRUWWHSTZEM-UHFFFAOYSA-N; XJCVRTZCHMZPBD-UHFFFAOYSA-N; WDCYWAQPCXBPJA-UHFFFAOYSA-NRutile-TiO2 photoactivity; TiO2 photocatalysis; Nitro to amino reduction; Dinitrobenzene photoreduction
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100% selective yield of m-nitroaniline by rutile TiO2 and m-phenylenediamine by P25-TiO2 during m-dinitrobenzene photoreduction
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 53, 5 August 2014, Pages 25–28
Authors
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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