Chemical Control of Phase Transformation Kinetics in Periodic Silica/Surfactant Composites

• Published in: Journal of the American Chemical Society Vol. 124; no. 14; pp. 3713 - 3724
• Main Authors: Gross, Adam F, Le, Van H, Kirsch, Bradley L, Tolbert, Sarah H
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 10.04.2002
• Subjects: Chemistry; Exact sciences and technology; General and physical chemistry; Ion-exchange; Other ion exchangers: preparations and properties; Surface physical chemistry; Differential scanning calorimetry; Phase transformation; Basic solution; Chemical stability; Activation parameter; Differential thermal analysis; Surfactant; Experimental study; Phase equilibrium; Silica; Molecular sieve

Control of phase stability is investigated through control of silica chemistry in ordered silica/surfactant composites under hydrothermal conditions. The composites were hydrothermally treated in pH 9 through pH 11 buffers while using in situ real time X-ray diffraction to follow a p6mm hexagonal-to...