Homogeneous Precipitation of Siliceous MCM-41 and Bimodal Silica

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Title:Homogeneous Precipitation of Siliceous MCM-41 and Bimodal Silica
Creators:
Rathouský, Jiří
Zukalová, Markéta
Zukal, Arnošt
Had, Jiří
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 63, 11, pp. 1893-1906
Uncontrolled Keywords:Porous materials synthesis, Morphology control, Siliceous MCM-41 mesoporous molecular sieves, Bimodal mesoporous silica, Homogeneous precipitation

Abstract

A new procedure for synthesis of MCM-41 siliceous molecular sieves with regular morphologies and bimodal mesoporous silica was developed. It is based on the precipitation from an isotropic reaction mixture. The decrease in pH, which causes the formation of solid particles, is achieved by the hydrolysis of ethyl acetate. The procedure is excellently reproducible and enables to obtain not only siliceous MCM-41 with the highest degree of pore ordering and phase purity but also a material of a new type, <i>viz.</i> bimodal silica containing both the MCM-41 mesopore system and the system of larger mesopores whose size ranges from 15 to 25 nm.

Title:Homogeneous Precipitation of Siliceous MCM-41 and Bimodal Silica
Creators:
Rathouský, Jiří
Zukalová, Markéta
Zukal, Arnošt
Had, Jiří
Uncontrolled Keywords:Porous materials synthesis, Morphology control, Siliceous MCM-41 mesoporous molecular sieves, Bimodal mesoporous silica, Homogeneous precipitation
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:63
Number:11
Page Range:pp. 1893-1906
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19981893UNSPECIFIED
ID Code:1428
Item Type:Article
Deposited On:06 Feb 2009 17:09
Last Modified:06 Feb 2009 16:09

Citation

Rathouský, Jiří; Zukalová, Markéta; Zukal, Arnošt; Had, Jiří (1998) Homogeneous Precipitation of Siliceous MCM-41 and Bimodal Silica. Collection of Czechoslovak Chemical Communications, 63 (11). pp. 1893-1906. ISSN 0010-0765

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