Preparation of low-density xerogels from mixtures of TEOS with substituted alkoxysilanes. I. 17O NMR study of the hydrolysis–condensation process

Alié, 1999, J. Non-Cryst. Solids, 246, 216, 10.1016/S0022-3093(99)00088-5 Alié, 2001, J. Non-Cryst. Solids, 285, 135, 10.1016/S0022-3093(01)00444-6 Alié, 2001, J. Non-Cryst. Solids, 289, 88, 10.1016/S0022-3093(01)00697-4 Heinrichs, 1997, J. Catal., 170, 366, 10.1006/jcat.1997.1772 Riegel, 1997, J. Molec. Struct., 410&411, 157 Kang, 1990, Mater. Sci. Eng. A, 126, 265, 10.1016/0921-5093(90)90132-M Rousseau, 1995, Chem. Mater., 7, 828, 10.1021/cm00053a004 Brand, 1999, Z. Naturforsch., 54b, 155, 10.1515/znb-1999-0202 Hüsing, 1999, Chem. Mater., 11, 451, 10.1021/cm980756l Prakabar, 1996, J. Non-Cryst. Solids, 202, 53, 10.1016/0022-3093(96)00152-4 Babonneau, 1995, Chem. Mater., 7, 1050, 10.1021/cm00054a002 Babonneau, 1997, J. Sol–Gel Sci. Technol., 8, 553 Scheim, 1989, J. Organomet. Chem., 375, 33, 10.1016/0022-328X(89)85080-6 Brinker, 1990