Photodimerization of maleic anhydride (MA) gives insoluble precipitated products that can be a trigger to clog a conventional microreactor. To avoid this problem, we devised a microreactor that uses liquid/gas slug flow and ultrasonication. Inert N2 gas introduced into the reaction solution swept through the reactor tube and transported precipitated products in the liquid segments. Ultrasound vibrations inhibited the adhesion and sedimentation of ...
