Charge Distribution on Surfaces of 2 : 1 Type Clay Minerals

Genesis and distribution of palygorskite and associated clay minerals in rafsanjan soils on diferent geomorphic surfaces

The Role of Edge Surfaces in Flocculation of 2:1 Clay Minerals

The effect of pH on the flocculation, settling rate, and gel volume of pyrophyllite in dilute suspension was studied in solutions of various NaNO3 concentrations to evaluate the role of the edge surfaces in particle-particle interaction. The critical flocculation concentration (CFC) increased with increasing pH, being 1.6 x 10~, 4 x 10", 1.5 x 10-, 9.5 x 10-, 1.6 x ID", and 0.1 moU L-' at pH 3....

Hyperbolic surfaces of $L_1$-2-type

In this paper, we show that an $L_1$-2-type surface in the three-dimensional hyperbolic space $H^3subset R^4_1$ either is an open piece of a standard Riemannian product $ H^1(-sqrt{1+r^2})times S^{1}(r)$, or it has non constant mean curvature, non constant Gaussian curvature, and non constant principal curvatures.

Clay Minerals and Catalysis

More than half a century ago, Irish physicist John Desmond Bernal and Swiss geochemist Victor M. Goldschmidt independently proposed that clay minerals may have played an important role in prebiotic synthesis (Bernal 1949; Goldschmidt 1952). I concur that mineral catalysis must have had a central role in prebiotic synthesis because most uncatalyzed reactions start from simple precursors like hyd...

Hybrid Langmuir–Blodgett monolayers containing clay minerals: effect of clay concentration and surface charge density on the film formation

Centrum voor Oppervlaktechemie en Katalyse, K.U.Leuven, Kasteelpark Arenberg 23 B-3001, Leuven, Belgium. E-mail: [email protected] Department of Colloid Chemistry, University of Szeged, Aradi V. t. 1. H-6720, Szeged, Hungary Birck Nanotechnology Center, 915 W. State Street, 1150 LILY Hall, Purdue University, West Lafayette IN 47907-2054, USA National Synchrotron Light Source...