Surface treatment and porosity control of porous silica microspheres

Stout, R.W.; Cox, G.B.; Odiorne, T.J.

doi:10.1007/bf02688552

Cited by 12 publications

(5 citation statements)

References 15 publications

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“…Among the few network materials suitable for mesoporous processing, silica is probably the most important one. Silicas with various pore sizes in the range of 2-80 nm, pore shapes, pore volume fractions, pore distributions, pore connections, as well as surface properties have been produced [3][4][5][6]. The mesoporous silicas can be either in powder form with the particle size ranging from 0.1-100 µm or in monolith form as large as 100 mm.…”

Section: Introductionmentioning

confidence: 99%

Energy absorption of nanoporous silica particles in aqueous solutions of sodium chloride

Kong¹,

Surani²,

Qiao³

2006

Phys. Scr.

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An experimental study is carried out on the effect of chemical admixtures, particularly sodium chloride, on the energy absorption behaviour of a hydrophobic nanoporous silica. As the pressure increases, once the capillary effect is overcome, the liquid is forced into the nanopores; and when the pressure is reduced, outflow is difficult, resulting in a pronounced hysteresis. The inflow pressure and the specific absorbed energy are strongly dependent on the sodium chloride concentration, providing a promising way to adjust the system performance.

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Section: Introductionmentioning

confidence: 99%

Energy absorption of nanoporous silica particles in aqueous solutions of sodium chloride

Kong¹,

Surani²,

Qiao³

2006

Phys. Scr.

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“…Routine column tests are simple, they require the generation of a single isocratic chromatogram, yet reveal a great deal of information about the quality of the column packing and the success of the column packing process [9,27,50,52,71,180,[198][199][200][201]. In this way the analyst can be sure that the column meets reasonable specifications for general performance and has a reliable method to monitor changes in column properties as a function of time or the type of samples analyzed.…”

Section: Column Evaluation and Test Methodsmentioning

confidence: 99%

“…An alternative approach is based on the agglutination of a silica sol by coacervation [25][26][27]. Over time the liquid droplets become increasingly viscous and solidify as a coherent assembly of particles in bead form.…”

Section: Macroporous Silica and Alumina Packingsmentioning

confidence: 99%

“…27 Flow chart for column selection based on sample type (MW = molecular weight). PLC = precipitation-liquid chromatography; SEC = size-exclusion chromatography; IEC = ionexchange chromatography; HIC = hydrophobic interaction chromatography; LSC = liquid-solid chromatography; RPC = reversedphase liquid chromatography; BPC = (polar) bonded-phase chromatography; and IPC = ion-pair chromatography.…”

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confidence: 99%

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The Column in Liquid Chromatography

Poole

1991

Chromatography Today

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“…In addition to partition, these packings may undergo other types of mechanisms, such as charge exclu-ଝ Dedicated to Joseph J. Kirkland sion or ion exchange, which can significantly affect the retention and separation of analytes [1][2][3][4]. Because of its physical characteristics and versatility, silica is the most widely used support for RPLC stationary phases [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%