Results 11 to 20 of about 40,793 (278)

Engineered alcohol oxidases catalyse transesterification in aqueous media without competing hydrolysis [PDF]

open access: yesNature Communications
Transesterification reactions are fundamental transformations in organic chemistry, yet performing them in aqueous media is challenging because of the competing hydrolysis reaction.
Bin Wu   +10 more
doaj   +2 more sources

Synthesis of Biodiesel from Palm Oil Using a Hybrid Mechanical Stirring and High Frequency Ultrasonic-Assisted Enzyme-Catalysed Process

open access: yesChemical Engineering Transactions, 2023
Transesterification process involves different immiscible substrates includes feedstock oil, alcohol and catalyst to produce fatty acid methyl esters, i.e. biodiesel.
Wen Chun Siaw   +4 more
doaj   +1 more source

Modification of chiral dimethyl tartrate through transesterification : immobilisation on POSS and enantioselectivity reversion in Sharpless asymmetric epoxidation [PDF]

open access: yes, 2010
Modification of dimethyl tartrate has been investigated through transesterification with aminoalcohols to provide reactive functionalities for the covalent bonding of chiral tartrate to polyhedral oligomeric silsesquioxanes.
Van Grieken, Rafael   +4 more
core   +4 more sources

Biodiesel production by enzyme-catalyzed transesterification [PDF]

open access: yesHemijska Industrija, 2005
The principles and kinetics of biodiesel production from vegetable oils using lipase-catalyzed transesterification are reviewed. The most important operating factors affecting the reaction and the yield of alkyl esters, such as: the type and form of ...
Stamenković Olivera S.   +3 more
doaj   +1 more source

Comparison of Ex-Situ and In-Situ Transesterification for the Production of Microbial Biodiesel

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2021
Microbial biodiesel is converted from microbial lipids via transesterification process. Most microbial biodiesel studies are focusing on the use of microalgal lipids as feedstock.
Alia Tasnim Hazmi   +3 more
doaj   +1 more source

Production of Biodiesel from Waste Cooking Oil Using Transesterification, with the KOH on Carbon Support from Waste Material and Egg Shell, as the Catalyst [PDF]

open access: yesEnvironment and Natural Resources Journal, 2016
Microwave assisted transesterification of waste cooking oil (WCO) is carried out in the presence of KOH on carbonized waste coconut shell support (KOH/CS), and CaO derived from waste egg shell (CaO-ES).
Sandhya Babel   +3 more
doaj   +1 more source

Biobased Transesterification Vitrimers

open access: yesMacromolecular Rapid Communications, 2023
AbstractThe rapid increase in the use of plastics and the related sustainability issues, including the depletion of global petroleum reserves, have rightly sparked interest in the use of biobased polymer feedstocks. Thermosets cannot be remolded, processed, or recycled, and hence cannot be reused because of their permanent molecular architecture ...
Ashwani Kumar, Luke A. Connal
openaire   +2 more sources

Research of the influence factors on transesterification reaction degree in PC/PBT blends

open access: yesAdvanced Industrial and Engineering Polymer Research, 2019
PC/PBT blends have excellent comprehensive properties and are widely used in the market. It's inevitable that transesterification reaction will take place in the melting process for this kind of blends, and this reaction has decisive effects on the blend
Tipeng Zhao   +6 more
doaj   +1 more source

Variability of Omega-3/6 Fatty Acid Obtained Through Extraction-Transesterification Processes from Phaeodactylum tricornutum

open access: yesActa Chimica Slovenica, 2021
The effect of direct transesterification methods on the omega-3/6 composition of extracts from Phaeodactylum tricornutum was studied. The aim of this work was to identify an extraction method which allowed to obtain the most suitable profile of fatty ...
Mari Carmen Ruiz-Dominguez   +6 more
doaj   +1 more source

On-line monitoring of the transesterification reaction between triglycerides and ethanol using near infrared spectroscopy combined with gas chromatography [PDF]

open access: yes, 2011
Many analytical procedures have been developed to determine the composition of reaction mixtures during transesterification of vegetable oils with alcohols.
Ying Li   +12 more
core   +1 more source

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