Common NMR active nuclei are 1H, 13C, 31P, 15N, 29Si, and many more. Nearly every element has at least one isotope that is NMR active. Since then, NMR spectroscopy has become an indespensible tool for ...

This study presents efficient CaO/ZnO composite catalysts for biodiesel production from soybean oil, achieving 99% conversion at room temperature in 25 minutes.