Results 71 to 80 of about 10,171 (209)

Spectrophotometric Determination of Aminophenol Isomers in Aqueous Solution using 1,2-Naphthoquinone-4-sulphonate Reagent [PDF]

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2011
A spectrophotometric method was developed for the quantitative determination of aminophenol isomers. The method is based on their reaction with 1,2-Naphthoquinone-4-sulphonate (NQS) reagent in aqueous basic medium forming colored products with maximum ...
T. N. Al-Sabha, N. N. Habeb
doaj  

Formation of a gold-carbon dot nanocomposite with superior catalytic ability for the reduction of aromatic nitro groups in water [PDF]

open access: yes, 2014
We report the synthesis of a gold-carbon dot nanocomposite and its utility as a recyclable catalyst for the reduction of aromatic nitro groups.
Bera, Abhijit   +11 more
core  

Internal antiplasticisation in highly crosslinked amine cured multifunctional epoxy resins [PDF]

open access: yes, 2018
The aromatic epoxy isomers triglycidyl p-aminophenol and triglycidyl m-aminophenol were cured with two aromatic diamine isomers 4,4′ diaminodiphenyl sulphone and 3,3′ diaminodiphenyl sulphone, creating four variations of epoxy resin.
Foreman, J., Ramsdale-Capper, R.
core   +1 more source

Effect of NaBH4 on properties of nanoscale zero-valent iron and its catalytic activity for reduction of p-nitrophenol [PDF]

open access: yes, 2016
International audienceThe reduction of p-nitrophenol (p-NP) to p-aminophenol (p-AP) by nanoscale zero-valent iron (NZVI)/NaBH4 system in an oxygen environment was studied by means of liquid chromatography, spectroscopy (vibration and X-ray photoelectron),
Bae, Sungjun   +3 more
core   +2 more sources

Thermosensitive Imaging Composition and Lithographic Plate Comprising the Same (US Patent 20110271859) [PDF]

open access: yes, 2011
The present application relates to a positive-working heat-sensitive lithographic plate. The infrared heat-sensitive image recording composition of the plate comprises a resin having self-dissolution inhibiting property and an infrared absorber.
Li, Shiyou, Yuan, Wei
core   +1 more source

A comparative study and development of an improved method for the reduction of nitroarenes into arylamines by Al/NH4X (X = Cl, Br, I) in methanol under ultrasonic conditions [PDF]

open access: yes, 2006
Nitroarenes were shown by us earlier to undergo reduction when treated with Al/NH4Cl in methanol under sonic conditions to give anilines in high yields D. Nagaraja, M.A. Pasha, Tetrahedron Lett. 40 (1999) 7855.
Jayashankara, V.P., Pasha, M.A.
core   +1 more source

Fluorescence Properties and Mg2+ Selectivity of Aryl‐Alkynyl Derivatives of the o‐Aminophenoltriacetate (APTRA) Ligand

open access: yesChemistry – A European Journal, Volume 32, Issue 10, 9 March 2026.
It is a challenge to improve the selectivity of high‐denticity ligands for Mg2+ over Ca2+. We show that in aryl‐alkynyl derivatives of APTRA, electron‐withdrawing substituents lower the binding affinity for Ca2+ more than Mg2+, making the ligand more selective for Mg2+.
Laura L. Duncan   +2 more
wiley   +1 more source

CdS Loaded an Iranian Clinoptilolite as a Heterogeneous Catalyst in Photodegradation of p-Aminophenol

open access: yesJournal of Chemistry, 2013
Natural clinoptilolite, zeolite  CdS-incorporated  was prepared by ion exchange and precipitation procedures and it was characterized by FT-IR, XRD, and thermal methods.
Alireza Nezamzadeh-Ejhieh   +1 more
doaj   +1 more source

Protective properties of modified epoxy coatings [PDF]

open access: yes, 2013
Article is devoted to the development and research of new film materials based on epoxy resins with improved properties. Evaluation of protective properties is determined by electrochemical and physico-mechanical methods of research that provides the ...
Ivanova, N. P.   +3 more
core  

Data from static and dynamic mechanical tests of different isomers of amine cured multifunctional epoxy resins [PDF]

open access: yes, 2018
Data from gas pycnometry, static compressive stress-strain and dynamic mechanical analysis are presented for a series of aromatic amine cured epoxy resins.
Foreman, J., Ramsdale-Capper, R.
core   +1 more source

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