Preparation of Silica-Pillared Molecular Sieve: Effects of Catalysts on Gelation of Intercalated Si(OC2H5)4

Preparation of Molecular Sieve from Pillaring of Kenyaite: Effects of Catalysts on Gellation of Intercalated TEOS

“…By the previous report (19), the use in which the interlayers are exposed to organoammonium of catalyst intends to develop the degree of polycondensation of pillar in interlayers, so that gallery height can be in- 1 To whom correspondence should be addressed. We previously reported the effects of acid and base catalysts on the hydrolysis and condensation polymerization of intercalated TEOS in H-magadiite (2). In the present work, we report the reaction of TEOS with octylammonium-kenyaite in the presence of excess amine and describe the effects of acid and base catalysts on the gellation of intercalated TEOS in H-kenyaite.…”

“…Recently, several researchers have (19). However, the reaction of TEOS gelation by alcohol investigated the pillared reactions of layered silicates such suspension occurs very slowly (19), and because TEOS is as magadiite, and kenyaite (2)(3)(4)(5)(6)(7)(8)(9)(10). Magadiite and kenyaite alcohol-soluble, it can be released outside the layered phases were primarily found by Eugster (11) in the lake beds of during gelation.…”

Preparation of Silica-Based Mesoporous Materials From Fluorosilicon Compounds: Gelation of H2SiF6in Ammonia Surfactant Solution

“…They have regular arrays of a uniform channel size rang-could be markedly improved by using fluorosilicon coming from 20 to 100 Å according to the type of surfactant. pounds such as H 2 SiF 6 . H 2 SiF 6 can be industrially obtained Hue et al (3) showed that the synthetic approach can be from silex and SiF 4 as well as an industrial byproduct.…”

Ion Exchange and Application of Layered Silicate

“…Pillaring of metal oxides in layered silicate, such as, natural and synthetic layered silicate is being increasingly studied [8][9][10][11][12][13]. In general, pillaring is achieved by the direct introduction of bulk inorganic (polyoxocations) or organic precursors (metal alkoxides) between the interlayers of layered silicate.…”

“…Layered materials have been often used to design and construct organic-inorganic nanomaterials because of the ease and variety of modifications possible by the introduction of organic and inorganic compounds into the interlayer space [19][20][21][22][23][24][25][26][27]. In recent years, the chemical modification into the interlayer surface of layered materials has become the focus of increased research.…”