Electrophilic phosphonium cations catalyze hydroarylation and hydrothiolation of olefins

M Pérez, T Mahdi, LJ Hounjet… - Chemical …, 2015 - pubs.rsc.org
Electrophilic phosphonium cations (EPCs) are efficient main group catalysts for the
hydroarylation of olefins under mild conditions, providing a facile route to substituted aniline …

Acid treatment on bentonite catalysts for alkylation of diphenylamine

Y Zhong, S Wang, X Meng, L Shi, N Liu - Catalysis Letters, 2024 - Springer
Dialkylated diphenylamine, renowned for its exceptional thermal stability and antioxidant
activity, are extensively used as antioxidants. Raw bentonite after acid-treatment was carried …

Adsorption of Seven PFAS on Beta Zeolite

CA Ponge, NP Sheehan, AL Peters… - Industrial & …, 2025 - ACS Publications
Per-and polyfluoroalkyl substances (PFAS) are emerging pollutants of concern. While
traditional adsorbents such as activated carbon and ion exchange resins have been used to …

[HTML][HTML] Adsorption and oxidation of β-carotene by montmorillonite bleaching clays

AJ Hambly, JS Van Duijneveldt, PJ Gates - Applied Clay Science, 2025 - Elsevier
The role that clay mineral acidity, specific surface area (SSA) and pore size distribution
(PSD) have on the adsorption and oxidation of β-carotene by montmorillonite bleaching …

A novel method for synthesis of nonylated diphenylamine by alkylation of diphenylamine with nonene over Fe-promoted SO42-/ZrO2 catalysts

S Wang, X Meng, Y Zhong, K Liu, N Liu, L Shi - Journal of Environmental …, 2024 - Elsevier
As a green and efficient antioxidant, nonylated diphenylamine (NDPA) is of great
significance to fields such as lubricants, synthetic rubber, and plastic. However, traditional …

Application of acid-treated bentonite in catalytic synthesis of alkylated diphenylamine

Z Jiang, Y Zhong, X Meng, L Shi, N Liu - Journal of Porous Materials, 2025 - Springer
Alkylated diphenylamines are amine antioxidants with excellent properties, widely used in
lubricating oils or rubber products to enhance their antioxidant properties. Herein …

Multi SO3H supported on carbon nanotubes: a practical, reusable, and regioselective catalysts for the tert-butylation of p-cresol under solvent-free conditions

R Fareghi-Alamdari, M Golestanzadeh, N Zekri… - Journal of the Iranian …, 2015 - Springer
The present study describes the synthesis, characterization, and catalytic activity of
sulfonated multi-walled carbon nanotubes and sulfonated single-walled carbon nanotubes …

Recent Developments in the Synthesis of Antioxidant Derivatives using Recoverable and/or Nano-catalysts

R Fareghi-Alamdari, F Mansouri… - Current Organic …, 2018 - ingentaconnect.com
In recent years, the increased use of antioxidant compounds in food, rubber, plastic,
cosmetic and pharmaceutical industries has been encouraged the organic chemists to …

Discontinuous alkylation of diphenylamine with nonene for maximum catalyst utilization

M Sklenár, V Danielik, P Hudec - Chemical Papers, 2017 - Springer
This study examines the alkylation of diphenylamine (DPA) with nonene (NON) in a liquid
phase catalyzed by acid-treated clay-based catalysts from commercial suppliers (Fulcat 22B …

[PDF][PDF] Mass Spectrometric Characterisation of Clay-Organic Interactions In Vegetable Oil Bleaching

A Hambly - 2023 - research-information.bris.ac.uk
Vegetable oils usually undergo a series of processing steps prior to being brought to market
in food and pharmaceutical products. Bleaching is an important step in this sequence and …