Pulse radiolysis studies on redox reactions of gallic acid: one electron oxidation of gallic acid by gallic acid–OH adduct

Literature Information

Publication Date
DOI 10.1039/A809147A
Impact Factor 3.676
Authors


View Original

Abstract

Using the pulse radiolysis technique, studies on reactions of 3,4,5-trihydroxybenzoic acid [gallic acid (GA)] with radical species generated in water are reported. At pH 6.8 and 9.7, OH radicals react with GA to give an adduct initially with rate constants of the order of 1×1010 d mol-1 s-1. This adduct then reacts with parent GA molecules with rate constants of the order 5×108 d mol-1 s-1 to give phenoxyl type radical species having absorption maxima in the 350 nm region. At pH 12 and 13.6, OH/O- radicals directly bring about oxidation of GA. Specific oxidants like azidyl radical bring about one electron oxidation at neutral and alkaline pHs with almost diffusion controlled rate constants. Rate constants for the reaction of Br2- radicals are found to be lower than those for OH radicals by an order of magnitude. At pH 0, both OH and Cl2- radicals react with GA to give phenoxyl type radicals. The phenoxyl radicals formed are quite stable at higher pHs, which make GA a good antioxidant. Rate constants for the reactions of eaq- with different protolytic forms of GA are determined.

Related Literature

Enhanced reactive CO2 species formation via V2O5-promoted Ni/KCC-1 for low temperature activation of CO2 methanation

Muhamed Yusuf Shahul Hamid, Anis Farhana Abdul Rahman

2019-03-16 Paper

DOI: 10.1039/C8RE00312B

Inter-particle migration of Cu ions in physically mixed Cu-SSZ-13 and H-SSZ-13 treated by hydrothermal aging

Hwangho Lee, Inhak Song, Se Won Jeon, Do Heui Kim

2019-02-05 Paper

DOI: 10.1039/C8RE00281A

Telescoped continuous flow generation of a library of highly substituted 3-thio-1,2,4-triazoles

Mariana C. F. C. B. Damião, Renan Galaverna, Alan P. Kozikowski, James Eubanks, Julio C. Pastre

2017-10-04 Paper

DOI: 10.1039/C7RE00125H

Inside back cover

Cover

DOI: 10.1039/C9RE90070E

Mesoscale triphasic flow reactors for metal catalyzed gas–liquid reactions

Dogancan Karan, Saif A. Khan

2019-06-11 Paper

DOI: 10.1039/C9RE00150F

Reaction induced diffusio-phoresis of ordinary catalytic particles

Aura Visan, Rob G. H. Lammertink

2019-05-14 Paper

DOI: 10.1039/C9RE00103D

Green and catalyst-free synthesis of deoxyarbutin in continuous-flow

Xiaoxuan Xie, Shitian Xie, Hongmiao Yao, Xin Ye, Zhiqun Yu

2019-02-28 Paper

DOI: 10.1039/C9RE00084D

Contents list

Front/Back Matter

DOI: 10.1039/C7RE90021J

Enzyme immobilized millimeter-sized polyHIPE beads with easy separability and recyclability

Mengjie Wang, Meng Wang, Yun Zhu, Shengmiao Zhang, Jianding Chen

2019-03-29 Paper

DOI: 10.1039/C9RE00065H

You might also like

Compound Q&A

What is 3-Fluoro-2-methylbenzylamine (CAS: 771573-36-5)?

3-Fluoro-2-methylbenzylamine is an organic compound with the CAS number 771573-3...

771573-36-53-Fluoro-2-methylben...
Compound Q&A

Is Tert-butyl 2-(oxetan-3-ylidene)acetate (CAS: 1207175-03-8) safe?

Tert-butyl 2-(oxetan-3-ylidene)acetate is considered safe for its intended uses ...

1207175-03-8Tert-butyl 2-(oxetan...
Compound Q&A

What precautions should be taken when handling 4-Acetyl-2-fluorobenzonitrile (CAS: 214760-18-6)?

Proper personal protective equipment (PPE) such as gloves, goggles, and a lab co...

214760-18-64-Acetyl-2-fluoroben...
Compound Q&A

How is 2-Ethyl-4-methyl-1,3-thiazole (CAS: 15679-12-6) typically synthesized?

2-Ethyl-4-methyl-1,3-thiazole is commonly synthesized via the reaction of thiour...

15679-12-62-Ethyl-4-methyl-1,3...
Compound Q&A

How should 5',5''-([2,2'-Bithiophene]-5,5'-diyl)bis(([1,1':3',1''-terphenyl]-4,4''-dicarboxylic acid)) (CAS: 1227780-71-3) be stored?

This compound should be stored in a cool, dry place away from direct sunlight an...

1227780-71-35',5''''-([2,2'-Bith...
Compound Q&A

What regulatory guidelines apply to L-Lysine Acetate Salt (CAS: 52315-92-1)?

L-Lysine Acetate Salt (CAS: 52315-92-1) is subject to various regulatory guideli...

52315-92-1L-LYSINE ACETATE SAL...
Compound Q&A

Is 6-Fluoro-3-hydroxy-2-pyrazinecarboxamide (CAS: 259793-96-9) safe?

6-Fluoro-3-hydroxy-2-pyrazinecarboxamide (CAS: 259793-96-9) is generally conside...

259793-96-96-Fluoro-3-hydroxy-2...
Compound Q&A

What are the physical and chemical properties of 1,1'-Sulfonylbis(1H-imidazole) (CAS: 7189-69-7)?

1,1'-Sulfonylbis(1H-imidazole) is a crystalline solid with a molecular weight of...

7189-69-71,1'-Sulfonylbis(1H-...
Compound Q&A

What industries use 4-methyl-7-nitro-1H-indole-3-carbonitrile (CAS: 289483-82-5)?

4-Methyl-7-nitro-1H-indole-3-carbonitrile (CAS: 289483-82-5) is primarily used i...

289483-82-54-methyl-7-nitro-1H-...
Compound Q&A

How should waste containing 5-Bromo-3-indolyl-beta-galactoside (CAS: 97753-82-7) be handled?

Waste containing 5-Bromo-3-indolyl-beta-galactoside (CAS: 97753-82-7) should be ...

97753-82-75-Bromo-3-indolyl-be...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.