Semi-hydrogenation of alkynes to alkenes over Pd nanoparticles embedded in MoC prepared from a high-temperature pulse.

Pd nanoparticles embedded in MoC were successfully prepared from a high-temperature pulse, and are efficient for semi-hydrogenation of alkynes to alkenes, where the embedded Pd sites possessed appropriate alkyne adsorption but suppressed alkene adsorption, thus exhibiting both high activities and good alkene selectivities in the hydrogenation of various alkynes.

Imidazolium-based Ionic Liquid as Efficient Corrosion Inhibitor for AA 6061 Alloy in HCl Solution.

The corrosion inhibition performance of an imidazolium-based ionic liquid (IL), 1-butyl-3-methylimidazolium thiocyanate (BMIm), was studied on AA 6061 alloy in 1 M HCl solution at 303 K, 333 K, and 363 K by gravimetric tests, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) analysis. Scanning electron microscopy with energy dispersive X-ray (SEM-EDX) and X-ray photoelectron spectroscopy (XPS) were used to detect the surface morphologies and chemical composition of the surface films. The results indicate that this IL inhibits AA 6061 corrosion in acid with maximum inhibition efficiencies of 98.