Facile synthesis and morphology control of highly ordered cubic mesoporous silica SBA-1 using short chain dodecyltrimethylammonium chloride as the structure-directing agent

Synthesis of Ordered Mesoporous Silica with Tunable Morphologies and Pore Sizes via a Nonpolar Solvent-Assisted Stöber Method

“…Bruinsma et al synthesized mesoporous silica fibers by dry spinning of alkoxide-cetyl­trimethyl­ammonium chloride (CTAC) solutions . Ting et al reported mesoporous silica nanocubes by using dodecyltrimethylammonium as the template . In addition to the templating synthesis based on small surfactants, amphiphilic block copolymers have been widely employed to synthesize mesoporous silica with large pores and various morphologies since 1998.…”

“…17 Ting et al reported mesoporous silica nanocubes by using dodecyltrimethylammonium as the template. 18 In addition to the templating synthesis based on small surfactants, amphiphilic block copolymers have been widely employed to synthesize mesoporous silica with large pores and various morphologies since 1998. For example, rodlike mesoporous silica SBA-15 with a 2-D hexagonal mesostructure 19 silica with a body-centered cubic mesostructure were synthesized by controlling the ionic strength of synthetic solutions using nonionic block copolymers P123 and F108 as the template, respectively.…”

Cubic Pm3n supermicroporous silicas and aluminosilicates templated by short-chain alkyltrimethylammonium surfactants

“…For C 12 -AS-50, the conversion of cyclohexanone did not decrease from one cycle of catalysis to the next, showing that catalyst was considerably resistant to deactivation. For USY-1 and C 16 -AlSBA-1 (56), the conversion decreased markedly, to lower than 5% at the 2 nd or 3 rd cycle. It was obvious that the aluminosilicates prepared in this study showed not only higher activities but also stronger deactivation resistance.…”

“…The disadvantage of these methods is that the surfactants are not commercially available, which makes the synthesis more tedious. The latter strategy is achieved by carrying out the synthesis in highly concentrated acid solution 46,56 or with the aid of a polyelectrolyte such as poly(acrylic acid) [57][58][59] or the aid of a costructure-directing agent (CSDA, aminopropyl-silane is most oen used). [60][61][62] The advantage of this strategy is that the commercially available alkyltrimethylammonium bromide can be utilized.…”