Ordered periodic mesoporous organosilicas PMOs

Ordered inorganic-organic hybrid silica-based composites include the following [48] (1) as-made (uncalcined or unextracted) surfactant-silica mesophase, (2) surface-modified mesoporous silica, (3) periodic mesoporous organosilica (PMO), (4) organic-containing mesoporous Si02-... 

Our studies also demonstrated the thermally induced pore closure for ordered organosilicas with organic groups in the framework (which are referred to as periodic mesoporous organosilicas, PMOs PMOs are particularly interesting as low-... 

Mixed micelles can be exploited as templates for preparation of nanoporous materials. Oligomeric alkyl-ethylene oxide surfactant (Polyoxyethylene (2) cetyl ether, B52), and ionic surfactant (cetyltrimethylammonium bromide, CTAB) form mixed micelles that self-assemble into well-ordered hexagonal and bimodal mesostructures. These systems can be used as templates to synthesize hydrothermally stable organized periodic mesoporous organosilicas (PMOs). The X-ray diffraction (XRD), TEM, BET, NMR and hydrothermal studies have been used to investigate the effects of B52 on the formation of various PMOs. The addition of B52 in the surfactant solution improves... 

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