Chernyshova, I. V. published the artcileMechanism of Adsorption of Long-Chain Alkylamines on Silicates. A Spectroscopic Study. 1. Quartz, Computed Properties of 2016-56-0, the publication is Langmuir (2000), 16(21), 8071-8084, database is CAplus.
The mechanism of adsorption of long-chain alkylamines at pH 6-7 onto quartz was studied using FTIR and XPS spectroscopy. The spectroscopic data were correlated with ¦Æ potential and Hallimond flotation results. For the 1st time (1) amine cation in the 1st monolayer is H-bonded with surface silanol group and this H-bond becomes stronger after the break in the adsorption characteristics (isotherm, ¦Æ potential, floatability); (2) at the break the origin of the adsorbed amine species changes qual., and along with alkylammonium ion attached to deprotonated silanol group, mol. amine appears at the surface and, as a result, monolayer thick patches of well-oriented and densely packed adsorbed amine species form rendering the surface highly hydrophobic; and (3) at higher amine concentration, bulk precipitation of mol. amine takes place. The counterion influences both these steps. A model of successive two-dimensional and three-dimensional precipitation was suggested to explain amine adsorption on a silicate surface.
Langmuir published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H31NO2, Computed Properties of 2016-56-0.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia