Microwave-Assisted Chemistry: a Closer Look at Heating Efficiency
-
Hoogenboom, Richard; Wilms, Tom F. A.; Erdmenger, Tina; Schubert, Ulrich S.
- Abstract:
- Nowadays, microwave heating has evolved into a common tool for chemists based on its numerous advantages over
conventional conductive heating. Surprisingly, the efficiency of microwave-assisted heating is still rather unexplored. In
this contribution, we report our investigations concerning the heating efficiency of a variety of solvents including polar and
apolar substances. Moreover, the effects of adding salt or passive heating elements on the microwave heating efficiency
will be addressed. Finally, the heating efficiency of demineralizedwater is discussed at different volumes and with different
microwave power levels in both monomode and multimode microwave synthesizers, demonstrating maximum average
heating efficiencies of 10% for small-scale vessels (5 mL), 20% for medium-scale (50 mL), and 30% for large-scale
microwave heating (400 mL).
- Year:
- 2009
- Type of Publication:
- Article
- Journal:
- Australian Journal of Chemistry
- Volume:
- 62
- Pages:
- 236 - 243