Kaolin, Clay Eaters and Clay-Containing Streams

Mechanical properties of sand, silt, and clay containing tetrahydrofuran hydrate

[1] The mechanical behavior of hydrate-bearing sediments subjected to large strains has relevance for the stability of the seafloor and submarine slopes, drilling and coring operations, and the analysis of certain small-strain properties of these sediments (for example, seismic velocities). This study reports on the results of comprehensive axial compression triaxial tests conducted at up to 1 ...

Clay exfoliation and polymer/clay aerogels by supercritical carbon dioxide

Supercritical carbon dioxide (scCO2) treatments of a montmorillonite (MMT) intercalated with ammonium cations bearing two long hydrocarbon tails (organo-modified MMT, OMMT) led to OMMT exfoliation, with loss of the long-range order in the packing of the hydrocarbon tails and maintenance of the long-range order in the clay layers. The intercalated and the derived exfoliated OMMT have been deeply...

Clay and non-clay minerals in the pharmaceutical industry

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...

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...