A Methodology Study of Hydrophosphonylation of Aldehydes Derivatives with H6P2W18O62•14H2O as a Catalyst

A catalytic process for hydrophosphonylation of aldehydes with H6P2W18O62•14H2O has been developed in this paper. Various aldehydes were reacted with diethylphosphite in the presence of 1 % of heteropolyacids (HPAs) as a catalyst to generate the α-hydroxyphosphonates. All the synthesized compounds were systematically characterized by IR, 1H NMR, 13C NMR, and 31P NMR.

Grape Pomace Extract as Green Vapor Phase Corrosion Inhibitor

The inhibition effect of the grape pomace extract during the early stage of steel corrosion under adsorbed thin electrolyte layers was investigated. The present study was carried out to identify the components present in the 2-propanol grape pomace extract by GC-MS analysis. Gravimetric, electrochemical impedance spectroscopy, potentiodynamic polarization, scanning electron microscopy, and FTIR techniques were used to study the corrosion inhibitive. Polarization measurements have indicated that these green inhibitors acted through mixed type inhibition.