THE HOMOGENEOUS NATURE OF CLEAR TPA-SILICALITE-1 PRECURSOR SOLUTIONS

Authors
SCHOEMAN BJ
Citation
Bj. Schoeman, THE HOMOGENEOUS NATURE OF CLEAR TPA-SILICALITE-1 PRECURSOR SOLUTIONS, Microporous materials, 9(5-6), 1997, pp. 267-271
Citations number
22
Categorie Soggetti
Chemistry Physical","Material Science","Chemistry Applied
Journal title
Microporous materials → ACNP
ISSN journal
09276513
Volume
9
Issue
5-6
Year of publication
1997
Pages
267 - 271
Database
ISI
SICI code
0927-6513(1997)9:5-6<267:THNOCT>2.0.ZU;2-K
Abstract
The polymeric silica present in clear tetrapropylammonium (TPA) silica te solutions, with the molar composition 9TPAOH:25SiO(2):480H(2)O:100e thanol and from which discrete colloidal crystals of TPA-silicalite-1 may be synthesized, has been characterized with respect to particle si ze using a modified method in which the reaction rate of monomeric sil ica with molybdic acid was recorded. The estimated particle size of 2. 8 nm obtained with this method agrees well with previous studies of th e sub-colloidal fraction wherein cryo-TEM and high effect laser light scattering techniques were employed. (C) 1997 Elsevier Science B.V.