Hydrothermal Synthesis and Crystal Structure of Zn4(PO4)2(HPO4)2·0.5(C10H28N4)·2H2O, a New Layered Zinc Phosphate with 12-Ring Cavities

Equilibrium, thermodynamic, and kinetic of Cr(VI) adsorption using a modified and unmodified bentonite clay

“…From the enthalpy of formation of monolayer D mon h and the number of moles of Cr(VI) -ions, N s , adsorbed, on the materials, the enthalpies of interaction can be calculated by Eq. (16).…”

“…The insertion process of organic neutral polar molecules into the nanospace void of sheets of layered insoluble nanocompounds leads to well-organized inorganic/organic structural layer materials with high crystallinity and porosity [11][12][13][14][15]. Important advances in the organofunctionalization processes field have been obtained by observing if any property of the lamellar nanocompound charges, by comparing these with those related to the host, as well as to the inserted guest molecules at the end of the process [16][17][18][19]. various investigations on intercalating of a variety of amine, such as secondary, tertiary, cyclic or arylic amines into lamellar compounds have been reported [20,21].…”

Applications of Brazilian Illite-Kaolinite in Natural and Intercalated Forms as Adsorbents to Removal of Zinc From Aqueous Solutions: Kinetic and Thermodynamic Studies

“…The adsorption experiments were performed by a batchwise method, i.e. by suspending 20.0 mg of each material in an aqueous solution (25.0 cm 3 ) of the divalent zinc at concentrations varying from 0.20 to 5.50 mmoldm -3 , under orbital stirring for 24 h at 298 ± 1 degree K 9,10 . The clay types were separated by centrifugation and supernatant solutions were carefully transferred to glass flasks to determine the concentrations of zinc in aqueous medium.…”

Synthesis and Structure of a New Layered Zincophosphate Zn6(PO4)5(HPO4)·C8N5H28·5H2O, Intercalated with Quintuply Protonated Tetraethylenepentamine

“…In the case of zinc, we obtained two new layered zincophosphates employing the triethylenetetramine and 1-, 4-, 8-, 11-tetraazacyclotetradecane (cyclam) as templates, respectively (5,23). In this paper, we describe the synthesis and structure of a new layered zincophosphate Zn (PO ) (HPO ))C N H )5H O, using tetraethylenepentamine as the structure-directing agent.…”