zirconium dioxide, commonly known as zirconia, is an interesting material and is receiving growing attention due to its excellent mechanical properties. the solid was characterized for surface area measurements, scanningelectron microscopy (sem), energy dispersive x-ray diffractometry (edx) and potentiometric titrations. surface titrations were carried out at the temperature range 303 to 323k i...

Evaluation of a new proton sponge, bis-1,1,8,8-(tetramethylguanidino)naphtalene (TMGN), in substituted phenols O-alkylation by methyl iodide in DMF has been studied. Kinetic measurements were performed in N,N-dimethylformamide-d7 and followed by H NMR using stoichiometric amounts of reagents. Plot of the results shows that the reaction follows an almost perfect second order rate law. However th...

Abstract. Small α-dicarbonyls represent the major precursors of secondary organic aerosol (SOA) and brown carbon (BrC) in atmosphere, but chemical mechanisms leading to their formation remain unclear. Here we elucidate fundamental kinetics for aqueous-phase oligomerization glyoxal (GL) using quantum kinetic rate calculations. Our results identify several essential isomeric processes GL, includi...

The mechanism of anion-catalyzed C–H silylation by R3SiCF3 reagents has been investigated using homogeneous TBAT-initiation, in situ and stopped-flow 19F NMR spectroscopy 2H-KIE, LFER, deuterium-labeled crossover, structure-selectivity quantitation (TMSCF3/TESCF3), carbene trapping, DFT-calculations. Analysis the kinetics reactions 1,3-difluorobenzenes (2), generation ArSiMe3 Me3SiF as a functi...