Results 21 to 30 of about 5,717,411 (161)

Preparation of a Carbon-Based Solid Acid Catalyst by Sulfonating Activated Carbon in a Chemical Reduction Process

open access: yesMolecules, 2010
Sulfonated (SO3H-bearing) activated carbon (AC-SO3H) was synthesized by an aryl diazonium salt reduction process. The obtained material had a SO3H density of 0.64 mmol·g-1 and a specific surface area of 602 m2·g-1.
Xiao-Yan Liu   +7 more
doaj   +1 more source

Adsorption Equilibria of Linear Alkenes onto a Sulphonated Styrene-Divinylbenzene Copolymer

open access: yesAdsorption Science & Technology, 2008
The adsorption equilibrium constants of the alkenes propene, but-1-ene, pent-1-ene, hex-1-ene and hept-1-ene onto the sulphonated styrene-divinylbenzene copolymer Amberlyst 15 were determined by inverse gas chromatography.
Piotr M. Słomkiewicz
doaj   +1 more source

Kinetics Modeling of Glycerol Carbonate Synthesis from Glycerol and Urea over Amberlyst-15 Catalyst

open access: yesIndonesian Journal of Chemistry, 2019
Synthesize of glycerol carbonate from glycerol and urea is an attractive path as glycerol carbonate has a large potential as a green solvent. The aim of the present study was to develop a kinetic model of glycerol carbonate synthesis with amberlyst-15 ...
Hary Sulistyo   +3 more
doaj   +1 more source

Facile imine synthesis under green conditions using Amberlyst® 15 [PDF]

open access: yes, 2022
Imines and their derivatives are of great interest to organic synthetic chemists due to their involvement as key intermediates which facilitate the construction of nitrogen heterocycles, particularly the formation of alkaloids.
Demanuele, Kaylie   +7 more
core   +1 more source

Ketal Protection of Glycerol for Selective Electrosynthesis of Glyceric Acid in Highly Alkaline Media

open access: yesAngewandte Chemie, Volume 138, Issue 36, 1 September 2026.
Using a ketal‐protected glycerol derivative (solketal) as the oxidation substrate enables site‐selective electrooxidation that suppresses C–C cleavage on non‐noble catalysts. Highly alkaline conditions promote reactive solketal alkoxide formation, weaken the Cα─H bond to facilitate dehydrogenation, and buffer local acidification, enabling a record‐high
Jiamin Wang   +6 more
wiley   +2 more sources

Coumarin Derivatives Solvent-Free Synthesis under Microwave Irradiation over Heterogeneous Solid Catalysts

open access: yesMolecules, 2017
A suitable methodology of synthesis of coumarin derivatives by Pechmann reaction over heterogeneous solid acid catalysts in a free solvent media under microwave irradiation is described.
Souad Bouasla   +6 more
doaj   +1 more source

Influência da mono-hidrogenação da fração C5 na síntese do TAME usando Amberlyst 15 como catalisador

open access: yesActa Scientiarum: Technology, 2001
No presente trabalho, foi estudada a síntese do TAME, em fase líquida, a partir de uma fração C5 e metanol, utilizando Amberlyst 15 como catalisador. A fração C5 utilizada possui uma diolefina, que tem uma alta tendência à formação de gomas e um alto ...
Gilberto da Cunha Gonçalves   +3 more
doaj   +2 more sources

Amberlyst-15/[Bmim][PF6] Catalyzed Synthesis of C3‑Symmetric Triarylbenzenes via Cyclotrimerization of Alkynes

open access: yes, 2016
The construction of C3-symmetric triarylbenzenes via cyclotrimerization of alkynes using Amberlyst-15/1-butyl-3-methylimidazolium hexafluorophosphate [Bmim]­[PF6] has been developed.
Bhalchandra M. Bhanage (1392865)   +1 more
core   +1 more source

Heterogeneous Esterification of Free Fatty Acids of Macauba pulp oil (Acrocomia aculeata) in ethanol

open access: yesSemina: Ciências Exatas e Tecnológicas, 2014
This study aimed to evaluate the utilization of KSF clay and Amberlyst®15 resin as catalysts in esterification reaction of free fatty acids (FFAs) from Macauba pulp oil in ethanol.
Talita Amábile S. Colonelli   +1 more
doaj   +1 more source

The Effect of Co-solvent on Esterification of Oleic Acid Using Amberlyst 15 as Solid Acid Catalyst in Biodiesel Production

open access: yesMATEC Web of Conferences, 2018
The oleic acid solubility in methanol is low due to two phase separation, and this causes a slow reaction time in biodiesel production. Tetrahydrofuran as co-solvent can decrease the interfacial surface tension between methanol and oleic acid.
Ridwan Iwan   +5 more
doaj   +1 more source

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