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Glycolysis of PET is a prospective way for degradation of PET to its monomer bis(hydroxyethyl)terephthalate (BHET) which can be polymerized again to form new qualified PET materials, and hence provides possibilities for a permanent loop recycling.

To prepare DOTP more cheaply and efficiently, PET was used as a raw material and a ChCl-based DES was synthesized as a catalyst.

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11A new route to synthesizing acrylic acid from acetic acid and formalin by 12 one-step aldol condensation reaction was proposed and developed. V-P/ SiO 2 oxide 13 bifunctional catalysts were designed and prepared by ultrasonic impregnation method.14 The catalysts were characterized by XRD, BET, TEM, TG/DTA, and XPS, as well as 15 NH 3 , CO 2 -TPD, and pyridine-FTIR methods. Catalytic performance was evaluated 16 using a fixed-bed tubular microreactor operating with a CH 3 COOH/HCHO (HAc/FA) 17 molar ratio of 10 under atmospheric pressure. Influences of the balance between 18 acidic and alkaline sites, as well as ratio of V 4+ and V 5+ , on catalyst activity were 19 further studied. Reaction parameters were systemically optimized. Through a series of 20 comparisons, V-P/SiO 2 binary oxide catalyst with a bulk density ratio of 1:2 was 21 selected. 1

Selective catalytic hydrotreatment of lignin-derived phenols and dimeric ethers into alkanes is crucial for utilization of lignin and its fragments.

in Wiley Online Library (wileyonlinelibrary.com)Vapor-liquid equilibrium (VLE) and liquid-liquid equilibrium (LLE) data of binary and ternary acrylic systems were systematically measured. Subsequently, VLLE phase diagrams of binary systems, tridimensional VLE phase diagrams of methyl acrylate (MA)-methanol (Me)-H 2 O ternary system, and quaternary LLE phase diagrams of MA-Me-H 2 O-methyl acetate (MeOAc) system were constructed. These diagrams clearly demonstrated the effects of temperature on phase equilibrium. The experimental data was fitted by the NRTL and UNIQUAC models, and the best-fitted parameters were used to predict interaction properties of ternary and quaternary mixture. Therefore, the phase equilibrium data were provided as reference for the design of acrylic systems rectification or extraction process. Residue curve was mapped out for MA-Me-H 2 O system through Aspen plus software. Finally, using thermodynamics and residue curve as theoretical basis, two novel separation processes were proposed and applied to the quaternary acrylic systems. V C 2015 American Institute of Chemical Engineers AIChE J, 62: [228][229][230][231][232][233][234][235][236][237][238][239][240] 2016