The mechanism of crystal growth for ZIFs (ZIF-67 and Zn/Co-ZIF) is explored for the first time using the spray-drying technique.

No abstract

Poly (lactic acid) (PLA) is extensively used as an eco-friendly compound for many applications. The synthesis of stereo-pure lactide, specifically L,L-lactide which is the most desired isomer for the synthesis of high-quality PLA is very important. In this work, various materials including MOFs and simple bases have been applied as catalysts for the Lactide synthesis. Herein we report the one-step synthesis of L,L-lactide with high selectivity and yield (99%) in the absence of racemization by applying a cost-effective Cs 2 CO 3 catalyst. The novel described procedure is even expected to be very efficient for industrial applications.