Yu, Xin published the artcileEthylene glycol co-solvent enhances alkyl levulinate production from concentrated feeds of sugars in monohydric alcohols, SDS of cas: 539-88-8, the main research area is alkyl levulinate production ethylene glycol monohydric alc concentrated feed.
Conversion of carbohydrates at concentrated feeds represents highly desirable for the industrial deployment of biobased fuels and chems. but challenging. One key bottleneck is that the excessive formation of polymeric humins greatly diminishes the utilization rate of feedstocks and the destination product yield. We report that the use of ethylene glycol as co-solvent for acid-catalyzed conversion of concentrated sugars enhances desirable alkyl levulinate (AL) production compared to reactions carried out in single monohydric alcs. (e.g., methanol, ethanol). Ethylene glycol served not only as a solubilizer of sugars in the reaction medium to lessen their tendency to polymerize by protecting reactive hydroxyl groups in sugars with alcs., but also as a supporter to restrain the condensation of furan intermediates. With 10 vol% ethylene glycol as the co-solvent of ethanol, an improved yield of Et levulinate (EL) from 45% to 56% was accomplished from concentrated feeds of glucose (200 g/L). In particular, high space time yield and EL concentration resp. up to 30 kg/m3·h and 90 g/L were obtained in a batch reactor. The solvents and catalyst could be isolated from the products, and showed good reusability. This contribution opens a reliable avenue for converting highly concentrated feeds of biomass-related sugars to oxygenated liquid fuels and versatile chems.
Fuel published new progress about Activation energy. 539-88-8 belongs to class esters-buliding-blocks, name is Ethyl 4-oxopentanoate, and the molecular formula is C7H12O3, SDS of cas: 539-88-8.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics