Rapid and phase pure synthesis of microporous copper silicate (CuSH–1Na) with 12-ring channel system

Three-Dimensional (3D) Microporous Iron Silicate with an Imandrite Type of Structure

“…Although the magnetic centers, Fe 2+ /Fe 3+ ions, are structurally well-isolated, and the coexistence of magnetism and porosity is usually mutually exclusive, weak magnetic interactions can occur through indirect exchange with successive linkages. A paradigmatic example is the carboxylato bridges that are known to be efficient pathways for magnetic interactions. − In MS-1, the shortest M–M distances are around 7.40 and 8.24 Å, and exchange pathways may occur via M–O–Na···M or M–O–Si···M bridges, respectively. In the literature, it is not unusual to find reports of magnetic order (short-range clustering or low-dimensional/3D ordering) with similar M–M bridging.…”

Use, Preparation, and Characterization of Copper-Containing Silica Gel

“…96 nm) in the shell. Mesoporous Na 4 [Cu 2 Si 12 O 27 (OH) 2 ]­[(NaOH) 2 (H 2 O) 6 ] (CuSH–1Na) was synthesized by a simple hydrothermal method in an autoclave at 230 °C . Ion exchange of Na + by Cs + , Ca 2+ , and Sr 2+ ions showed that the structure can suffer partial replacement of the charge-compensating cations.…”

“…Mesoporous Na 4 [Cu 2 Si 12 O 27 (OH) 2 ]-[(NaOH) 2 (H 2 O) 6 ] (CuSH−1Na) was synthesized by a simple hydrothermal method in an autoclave at 230 °C. 16 Ion exchange of Na + by Cs + , Ca 2+ , and Sr 2+ ions showed that the structure can suffer partial replacement of the chargecompensating cations. Nanoporous copper silicates with oned i m e n s i o n a l 1 2 -r i n g c h a n n e l s y s t e m s , Na 4 [Cu 2 Si 12 O 27 [OH] 2 [(AOH)(NaOH)](H 2 O) 6 ], (CuSH− 1A) where A = Na, K, Rb, and Cs, were synthesized by dissolving fumed silica in NaOH and AOH mixture and by adding copper sulfate to this solution.…”