A microreactor functionalized with acoustic wave effects and a liquid phase catalytic reaction

Area of Science:

• Chemical Engineering
• Materials Science
• Catalysis

Background:

• Microreactors offer advantages in controlling chemical reactions.
• Acoustic waves can be generated on ferroelectric crystals using radiofrequency electric power.
• Scandium triflate (Sc(OTf)3) is a catalyst used in organic synthesis.

Purpose of the Study:

• To investigate the effect of acoustic waves on catalytic activity in a microreactor.
• To demonstrate the use of acoustic wave-induced lattice displacement for enhancing catalysis.
• To show that microreactor functionalization with acoustic waves provides reaction-controllable functions.

Main Methods:

• Functionalizing a microreactor with ferroelectric crystals to generate acoustic waves (SAWs and ROs).
• Applying radiofrequency electric power to induce dynamic lattice displacement.
• Utilizing Sc(OTf)3 as a catalyst in the aldol condensation of benzaldehyde and acetophenone.

Main Results:

• Acoustic wave-induced dynamic lattice displacement significantly enhanced Sc(OTf)3 catalysis.
• The aldol condensation reaction of benzaldehyde and acetophenone to chalcone showed improved yield.
• The functionalized microreactor demonstrated controllable promotion of liquid-phase catalytic reactions.

Conclusions:

• Acoustic wave functionalization of microreactors can significantly enhance catalytic efficiency.
• Dynamic lattice displacement is a key mechanism for promoting liquid-phase catalysis.
• This approach offers a novel method for developing reaction-controllable microreactors.