For measurement, the [equivalent to] Al-O-Si[O.sub.(n)]-Al [equivalent to] with n = 1-ra zeolite framework is hydrolyzed in mineral acid and added to molybdic
The reaction product of [H.sub.2][O.sub.2] and molybdic
acid can be detected at 405 nm.
Jiang et al., "Commercially available molybdic
compound-catalyzed ultra-deep desulfurization of fuels in ionic liquids," Green Chemistry, vol.
Colorimetry of total phenols with phospho molybdic
phoshphotungstic acid reagents, citado por Mathew, Sindhu & Abraham, E.
The molybdenyle solution was prepared by dissolving 10 g of molybdic
acid in 90 mL of 1 M sulfuric acid, plus 10 mL of concentrated sulfuric acid, and heating the system of achieve complete dissolution.