Portland State University. Department of Chemistry
Date of Award
Master of Arts (M.A.) in Chemistry
1 online resource (2, v, 70 leaves, ill. 28 cm.)
Silicate minerals, Catechol
The chemical properties of guanidinium tris(catecholato)siliconate, (H2N)2C=NH2J2(Si(C6H402)j]-XH20 (0
This same compound was, upon addition of' (H2N)2C=NH.HC1, isolated from 0.2, M aqueous catechol solutions buffered at pH 10 and containing the silicate minerals albite, andradite, muscovite, pyrophyllite, talc, and wollastonite, and also from unbuffered catechol solutions containing wollastonite and andradite.
It is concluded from this work that the formation of an anionic catechol-silicon complex, Si(C6H402)32~ is largely responsible for the dissolution of the minerals mentioned above. From this conclusion, it is proposed that naturally occurring members of the class of organic compounds to which catechol belongs, the aromatic vic-diols, may play a role in chemical weathering, in the development of certain soil profiles, and in the entry and accumulation of silica in plants.
Kelley, James Maurice, "Catechol effected dissolution of silicate minerals" (1972). Dissertations and Theses. Paper 970.