Results 41 to 50 of about 5,717,411 (161)

Óleo de cravo-da-índia (Eugenia caryophyllata) como substrato para a síntese de acetato de eugenila via catálise heterogênea em sistema livre de solvente [PDF]

open access: yes, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Curso de Pós-Graduação em Engenharia de Alimentos, Florianópolis, 2014.O acetato de eugenila é um éster que apresenta diversas propriedades interessantes do ponto de ...
Laroque, Denise Adamoli
core  

Pretreatment of Trap Grease with Amberlyst-15 for Biodiesel Production

open access: yes, 2011
After investigating the effects of each parameter on the esterification of FFA catalyzed by Amberlyst-15 in the trap grease, the optimal values were determined through an orthogonal experimental design.
Da Long Huang   +2 more
core   +1 more source

Determination of the Adsorption Equilibrium of Alcohols and Alkenes on a Sulphonated Styrene–Divinylbenzene Copolymer

open access: yesAdsorption Science & Technology, 2006
The adsorption equilibrium constants of the alcohols: methanol, ethanol and propan-1-ol, and of the alkenes: 2-methylpropene, 2-methylbut-1-ene, 2-methylbut-2-ene, 2-methylpent-1-ene, 2-methylpent-2-ene and 2-methylhex-2-ene, onto the sulphonated styrene–
Piotr M. Słomkiewicz
doaj   +1 more source

Esterification of Glycerol With Oleic Acid Over Hydrophobic Zirconia-Silica Acid Catalyst and Commercial Acid Catalyst: Optimization and Influence of Catalyst Acidity

open access: yesFrontiers in Chemistry, 2019
Catalytic esterification of glycerol with oleic acid (OA) was optimized over hydrophobic mesoporous zirconia-silica heterogeneous acid catalyst (ZrO2-SiO2-Me&Et-PhSO3H) and benchmarked with commercial catalysts (Aquivion and Amberlyst 15) in order to
Pei San Kong   +5 more
doaj   +1 more source

Glycerol Electrocatalytic Reduction Using an Activated Carbon Composite Electrode: Understanding the Reaction Mechanisms and an Optimization Study

open access: yesFrontiers in Chemistry, 2022
The conversion of biomass-derived glycerol into valuable products is an alternative strategy for alleviating energy scarcity and environmental issues. The authors recently uncovered an activated carbon composite electrode with an Amberlyst-15 mediator ...
Siti Aqilah Nadhirah Md. Rahim   +8 more
doaj   +1 more source

An unusual stereospecific epoxidation with “per-amberlyst 15®”

open access: yes, 1985
4-Methyl-4-naphthoquinol and its 5-methyl derivative on treatment with per-Amberlyst 15 are converted to the corresponding cis-2,3-epoxides in high yields. The latter structure was determined by X-ray crystallography.
Jefford, Charles   +9 more
core   +1 more source

Kinetic Study of Esterification of Acetic Acid with n-butanol and isobutanol Catalyzed by Ion Exchange Resin

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2011
Esters are an important pharmaceutical intermediates and very useful perfumery agents. In this study the esterification of acetic acid with n-butanol and iso-butanol over an acidic cation exchange resin, Amberlyst 15 were carried out.
Amrit Pal Toor   +3 more
doaj   +1 more source

Synthesis of a Pyrrolo[1,2-a]quinazoline-1,5-dione Derivative by Mechanochemical Double Cyclocondensation Cascade

open access: yesMolecules, 2022
N-heterocyclic compounds, such as quinazolinone derivatives, have significant biological activities. Nowadays, as the demand for environmentally benign, sustainable processes increases, the application of compounds from renewable sources, easily ...
Vanessza Judit Kolcsár   +1 more
doaj   +1 more source

Sustainable levulinic acid production from inulin via hydrothermal conversion

open access: yesBiofuels, Bioproducts and Biorefining, Volume 20, Issue 5, Page 2068-2081, September/October 2026.
Abstract This study investigates the hydrothermal conversion of inulin using potassium pyrosulfate to levulinic acid (LA). The Box–Behnken design approach was applied to optimize the conversion parameters and analyze the interactions influencing LA yield.
Gwi‐Taek Jeong
wiley   +1 more source

Selective Iodination of Alcohols with NaI/Amberlyst 15 in Acetonitrile [PDF]

open access: yes, 2020
: A simple and effective procedure for conversion of primary, secondary, allylic and benzylic alcohols into the corresponding iodides is described using NaI/Amberlyst 15 in acetonitrile at room temperature.
Mahmood Tajbakhsh   +2 more
core  

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