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Organo-silica monoliths

Organo-Silica Monoliths for Affinity Ligand Encapsulation... [Pg.391]

In principle, many organosilanes can be used as a second precursor to form the organo-silica monolith. Various coprecursors reported for the fabrication of hybrid organo-silica monolithic columns for EC or CEC are listed in Table 8.1. The structure of the organo-silica material is affected by the ratio of the tetralkoxysilane to the alkyltrialkoxysilane in the sol-gel reactions, the type of precursor used, and the processing parameters. This can be seen, for example, in the phase separation behavior of... [Pg.398]

FIGURE 8.7 Separation of aldehydes and ketones by CEC in the organo-silica monolith shown in Figure 8.6. Column 50 cm x 50 xm ID (46 cm effective length), separation at —25 kV mobile phase 70% acetonitrile-30% 5 mM Tris-HCL (pH = 2.3) analytes (1) ben-zaldehyde, (2) o-tolualdehyde, (3) butyrophenone, (4) valerophenone, (5) hexaphenone, and (6) heptaphenone. (Reprinted from J. D. Hayes, A. Malik, Anal. Chem., 72 4090 (2000). With permission. Copyright American Chemical Society 2000.)... [Pg.403]

FIGURE 8.8 (a) SEM image of organo-silica monolith prepared with the APTES and TEOS ... [Pg.404]

TEOS/Cb-TEOS Volume Organo-Silica Monoliths ... [Pg.405]

The concept of establishing an optimized platform to construct the organo-silica monolith has been demonstrated using allyl functionality [95], although any other... [Pg.406]

Physical Characteristics of Organo-Silica Monolith as a Function of PEG in the Reaction ... [Pg.408]

Very recently, hierarchically arranged aerogel monoliths [209], silica-based monoliths from swollen liquid crystals [210] or heptane/water/ethanol/sodium dodecylsulfate microemulsion [211], monolith-based hybrid components such as the PMOs [212], and silicon oxycarbide monoliths with better thermal properties than the pure (organo) silica monoliths [213] have been reported. These approaches have been extended also to alumina or aluminumsilicates [214, 215], titania [216, 217], zirconia [218], or ceramic-based [219] systems. [Pg.65]

See other pages where Organo-silica monoliths is mentioned: [Pg.391]    [Pg.396]    [Pg.396]    [Pg.399]    [Pg.403]    [Pg.404]    [Pg.405]    [Pg.406]    [Pg.409]    [Pg.410]    [Pg.411]    [Pg.412]    [Pg.414]    [Pg.414]    [Pg.416]    [Pg.416]   
See also in sourсe #XX -- [ Pg.394 ]



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Organo-silica hybrid monolithic columns for

Silica monolith

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