Results 201 to 210 of about 56,036 (238)

1H NMR assisted quantification of glycerol carbonate in the mixture of glycerol and glycerol carbonate

Talanta, 2018
Glycerol carbonate (GLC) is a very important chemical having a variety of application viz., green solvent in organic synthesis, an electrolyte in lithium batteries, wetting agent in cosmetics and precursor in polymer and food industry for the synthesis of 1,3-sn-diglycerides.
Avneet, Kaur, Ranjana, Prakash, Amjad, Ali   +2 more
openaire   +2 more sources

Biosynthesis of glycerol carbonate from glycerol by lipase in dimethyl carbonate as the solvent

Bioprocess and Biosystems Engineering, 2010
Glycerol carbonate was synthesized from renewable glycerol and dimethyl carbonate using lipase in solvent-free reaction system in which excess dimethyl carbonate played as the reaction medium. A variety of lipases have been tested for their abilities to catalyze transesterification reaction, and Candida antartica lipase B and Novozyme 435 exhibited ...
Kyung Hwa, Lee, Chang-Ho, Park, Eun Yeol, Lee   +2 more
openaire   +2 more sources

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by calcined silicates

Applied Catalysis A: General, 2017
Abstract Several anhydrous silicates were prepared by calcination at 400 °C and utilized as solid base catalyst for synthesizing glycerol carbonate (GC) by transesterification of glycerol with dimethyl carbonate (DMC). Among them, calcined sodium silicate showed the best catalytic activity with glycerol conversion of 97.7%.
Song Wang, Yinyan Guan, Linnan Zhang
exaly   +2 more sources

Electrosynthesis of Glycerol Carbonate from Glycerol and Potassium Carbonate on Nickel Electrodes

ECS Transactions, 2017
The growing biodiesel industry leads to an excess production of glycerol by-product which is of low value but costly to store or dispose because glycerol is not suitable as fuel due to its sooty flame while its discharge to water leads to eutrophication.
Hui Huang Hoe, Donald W. Kirk
openaire   +1 more source

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by KF modified hydroxyapatite

Journal of Industrial and Engineering Chemistry, 2011
Abstract Hydroxyapatite (HAP) modified with different metal salts were prepared by wet-impregnation method and used as a catalyst for the synthesis of glycerol carbonate via transesterification from glycerol and dimethyl carbonate (DMC). It was found that KF/HAP was a highly efficient heterogeneous catalyst for the synthesis of glycerol carbonate and
Guangxing Li
exaly   +2 more sources

Liquid–liquid equilibria for the ternary systems DMC–methanol–glycerol, DMC–glycerol carbonate–glycerol and the quaternary system DMC–methanol–glycerol carbonate–glycerol at catalytic reacting temperatures

Chemical Engineering Research and Design, 2014
Liquid-liquid equilibria of multicomponent systems involved in the synthesis of glycerol carbonate from dimethyl carbonate and glycerol were experimentally measured. Particularly, data for the ternary systems dimethyl carbonate + methanol + glycerol and dimethyl carbonate + glycerol carbonate + glycerol and the quaternary system dimethyl carbonate ...
Felix García-Ochoa, MIGUEL Ladero, Jesus Esteban   +2 more
exaly   +3 more sources

Glycerol carbonate synthesis from glycerol and dimethyl carbonate using trisodium phosphate

Journal of the Taiwan Institute of Chemical Engineers, 2016
Abstract Glycerol, a major biodiesel byproduct, was valorized using anhydrous trisodium phosphate (TSP) as a reusable heterogeneous catalyst in glycerol carbonate (GC) synthesis. The reaction progressed via catalytic carboxylation pathway of glycerol with dimethyl carbonate (DMC) under various reaction conditions.
B H Hameed, P U Okoye, A Z Abdullah
exaly   +2 more sources

Glycerol and glycerol carbonate as ultraviscous solvents for mixture analysis by NMR

Journal of Magnetic Resonance, 2011
NMR of weakly polar analytes in an apolar ultraviscous solvent has recently been proposed for mixture analysis as a pertinent alternative to the DOSY experiment. The present article reports the first use of glycerol and glycerol carbonate as polar solvents for the NMR analysis of a model mixture of dipeptides.
Lameiras, Pedro, Boudesocque, Leslie, Mouloungui, Zéphirin, Renault, Jean-Hugues, Wieruszeski, Jean-Michel, Lippens, Guy, Nuzillard, Jean-Marc   +6 more
openaire   +3 more sources

Coupling reaction and azeotropic distillation for the synthesis of glycerol carbonate from glycerol and dimethyl carbonate

Chemical Engineering and Processing: Process Intensification, 2010
A new process, coupling reaction and azeotropic distillation was proposed for the synthesis of glycerol carbonate (GC) from glycerol (G) and dimethyl carbonate (DMC). The bench scale experimental investigation was systematically conducted for this new process.
Tao Wang
exaly   +2 more sources

Synthesis of glycerol carbonate from glycerol and dimethyl carbonate catalyzed by K2CO3/MgO

Research on Chemical Intermediates, 2011
A series of M/MgO (M = CaO, KNO3, KOH, K2CO3) catalysts were prepared by a dry impregnation method and used for synthesis of glycerol carbonate from glycerol and dimethyl carbonate. It was found that K2CO3/MgO was the most efficient catalyst, with a glycerol carbonate yield of approximately 99% under the conditions: DMC/glycerol molar ratio 2.5:1 ...
Meimei Du, Qiuxiao Li, Wantian Dong, Tao Geng, Yajie Jiang   +4 more
openaire   +1 more source