A highly crystalline layered silicate with three-dimensionally microporous layers.
Layered silicates with three-dimensional microporosity within the layers have the potential to enable new applications in catalysis, adsorption and ion-exchange. Until now no such materials have been reported. However, here we present the synthesis and structure of AMH-3, a silicate with three-dimensionally microporous layers, obtained in high purity and crystallinity. AMH-3 is composed of silicate layers containing eight-membered rings in all three principal crystal directions, and spaced by strontium cations, sodium cations and water molecules. Because of its three-dimensional pore structure, acid and thermal stability, this layered material could find applications in polymer-silicate composites for membrane applications, for synthesis of combined microporous-mesoporous materials, and for the formation of new zeolites and microporous films. Its existence also opens new possibilities for the synthesis of other layered silicates with multidimensional microporous framework layers.
Jeong
Hae-Kwon
HK
Department of Chemical Engineering, 159 Goessmann Laboratory, University of Massachusetts, Amherst, Massachusetts 01003-9303, USA.
Nair
Sankar
S
Vogt
Thomas
T
Dickinson
L Charles
LC
Tsapatsis
Michael
M
D002412:Cations / Q000737:chemistry; D003460:Crystallization; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D016062:Porosity; D017640:Silicates / Q000737:chemistry*; D013324:Strontium / Q000737:chemistry; D013696:Temperature; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction; D017641:Zeolites / Q000737:chemistry
D002412:Cations; D017640:Silicates; D014867:Water; D017641:Zeolites; D013324:Strontium