Experimental Isobaric Vapor Liquid Equilibrium for Binary Systems Diethylene Glycol Dibenzoate + Diethylene Glycol, Diethylene Glycol Dibenzoate + Octyl Benzoate, and Ternary System Diethylene Glycol Dibenzoate + Diethylene Glycol + Octyl Benzoate at 1.0152 kPa

Abstract

Diethylene glycol dibenzoate (DEDB) is nowadays considered as one of the most promising environment-friendly plasticizers. Isobaric vapor–liquid equilibrium (VLE) data were measured for the binary systems diethylene glycol dibenzoate (DEDB) (1) + diethylene glycol (2), DEDB (1) + octyl benzoate (2) and ternary system DEDB (1) + diethylene glycol (2) + octyl benzoate (3) at 1.0152 kPa using a modified Othmer still, which enriched the basic data for DEDB. The UNIFAC model, Wilson model, and NRTL model were used to predict the VLE data of the binary and ternary systems. The comparison reveals that on average the most accurate VLE predictions are obtained with the NRTL model.

Pt1Bi1 Intermetallic Structure with Controllable C–H and C–O Bond Activation Ability for Enhanced Diethylene Glycol Oxidation

“…Diethylene glycol (DEG) is an abundant side product in the production of ethylene glycol via the hydration reaction of epoxy propane, which has been of major concern. 1 Besides the ammonification, cyclization, and etherification reactions of DEG, the selective oxidation of DEG to diglycolic acid (DGA), an important chemical intermediate in the fields of agriculture and polyester building materials, 2 is an important value-added reaction under mild conditions (120 °C, 6 h). Of note, the essence of this reaction is the selective oxidation of primary hydroxyl groups to hydroxy acids, involving the oxidation of a single primary hydroxyl group to generate 2-hydroxyethoxy acetic acid (HEAA) and further oxidation of a second primary hydroxyl group to obtain target DGA.…”