In chemistry, homogeneous catalysis is a sequence of reactions that involve a catalyst in the same phase as the reactants. Topics discussed in this book include the catalytic applications of metallic nanoparticles nanocomposites; olefin oxidation chemistry based on Mo catalysts; homogeneous catalysts based on Bis(imino) pyridine complexes of iron, cobalt, vanadium, and chromium; Ru catalysts in asymmetric hydrogenation; supramolecular gel catalysts; glycerol as a sustainable solvent for homogeneous catalysis; homogeneous catalysis in carbonylative coupling reactions and methods for enhancing the activity and selectivity of homogeneous catalysts in the oxidation process.