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Monolithic Silica SnG Inc.
Monolithic Silica. Monolithic silica is an integral porous body with a characteristic structure connected with a mesh-like skeleton of micrometer order. It looks like a chalk, but when you observe it with an electronic microscope, it has a structure with a skeleton like a jungle gym. Numerous holes (pores) called micron-scale through pores are opened around the gap of the skeleton, and holes
Monolithic Silica with Bimodal Pore Structure Sigma-Aldrich
Chromolith ® HPLC and UHPLC columns are made from monolithic silica with a bimodal pore structure using sol-gel technology. Mesopores and macropores are formed within the monolithic silica. The column is no longer packed with small particles but consists of a single monolithic piece of high-purity polymeric silica gel. The mesopores form the fine porous structure within the solid silica in
Monolithic silica with HPLC separation and solid phase
During the last one or two decades, monolithic polymers and silica have been developed for use as a new separation material or as a solid phase extraction sorbent and the applications with monoliths have been dramatically increased to separate the analytes by HPLC and to extract the analytes by solid phase extraction.The structure of monoliths differs from those of conventional particle materials.
Monolithic Silicas in Separation Science: Concepts
Monolithic Silica Capillary Columns for High-Speed Separations Future Considerations SILICA MONOLITHIC COLUMNS AND MASS SPECTROMETRY Introduction Offline Chromatography, LC MALDI MS Online ESI LC/MS/MS for Proteomics and Selected Reaction Monitoring (SRM) Online Reactors and Affinity Columns Coupled to Mass Spectrometry Conclusion SILICA MONOLITHS FOR
Performance of Monolithic Silica Capillary Columns with
Monolithic silica capillary columns for HPLC were prepared from tetramethoxysilane to have smaller sized domains and increased phase ratios as compared to previous materials, and their performance was evaluated. The monolithic silica columns possessed an external porosity of 0.65−0.76 and a total porosity of 0.92−0.95 and showed considerably higher performance and greater retention factors
Mechanical properties of monolithic silica aerogels made
01/01/2014· Hydrophobic monolithic silica aerogels with densities spanning ≈ 0.05 to >0.32 g/cm 3 were obtained by means of supercritical CO 2 drying and the results of our investigations on the influence of density on the elastic modulus E, compression strength σ C, fracture strength ε F, tensile strength σ T, pore size distribution D av, and thermal conductivity λ are reported. Our results are in
Antibody-coupled monolithic silica microtips for
Here we constructed anti-CD9 antibody-coupled highly porous monolithic silica microtips which allowed automated rapid and reproducible exosome extraction from multiple clinical samples. We applied these tips to explore lung cancer biomarker proteins on exosomes by analyzing 46 serum samples. The mass spectrometric quantification of 1,369 exosomal proteins identified CD91 as a lung
The modeling, characterization, and design of monolithic
The modeling, characterization, and design of monolithic inductors for silicon RF IC's Abstract: The results of a comprehensive investigation into the characteristics and optimization of inductors fabricated with the top-level metal of a submicron silicon VLSI process are presented. A computer program which extracts a physics-based model of microstrip components that is suitable for circuit
Monolithic Chromatography Chemical & Engineering News
By fine-tuning their synthesis method, the group prepared silica monoliths with permeabilities comparable with those of columns packed with 5-µm particles but with the separating power of
Monolithic silica with HPLC separation and solid phase
During the last one or two decades, monolithic polymers and silica have been developed for use as a new separation material or as a solid phase extraction sorbent and the applications with monoliths have been dramatically increased to separate the analytes by HPLC and to extract the analytes by solid phase extraction.The structure of monoliths differs from those of conventional particle materials.
Monolithic Silicas in Separation Science: Concepts
Edited by the experts and pioneers in the field, this is the first monograph to cover the topic, containing the must-have information hitherto only scattered among journals. Clearly divided into sections on preparation, characterization and modeling, and applications, this is essential reading for chemists, chromatographers, analytical chemists, biochemists and biologists.
Recent advances in sol–gel synthesis of monolithic silica
01/06/2013· Synthesis of monolithic silica gels and glasses is a basic research topic in the area of sol–gel processing. Although fracture during the drying of wet gels is still a major problem, it has largely been solved by supercritical drying and the addition of particulate silica fillers. On the other hand, the reduction of the surface tension of the pore liquid, controlled drying accompanied by the
Comparison of monolithic silica and polymethacrylate
Organic polymer monolithic capillary columns show similar retention behaviour to chemically bonded alkyl silica columns for compounds with different polarities characterized by interaction indices, I x, but have lower methylene selectivities and do not show polar interactions with sulphonic acids. The commercial capillary and analytical silica gel‐based monolithic columns showed similar
Monolithic Silica Adsorbents; MonoTrap
MonoTrap, Monolithic Silica Adsorbents. MonoTrap is a new material for easy trapping of compounds and extracting by solvent or temperature.
Monolithic silica capillary columns having immobilized
26/05/2009· Monolithic silica capillary columns having immobilized lectins and surface bound polar functionalities for lectin affinity and normal phase nano‐LC and CEC of glycoconjugates, respectively. Hengwen Zhong. Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma, USA. Fax: +405‐744‐1235 . Search for more papers by this author. Ziad El Rassi. E-mail address:
Monolithic Silica Columns for Capillary HPLC SpringerLink
Monolithic silica columns having various sizes of skeletons and through-pores were prepared by a sol-gel method in a fused silica capillary, and evaluated in capillary HPLC. The monolithic silica columns showed performance beyond the limit of conventional particle-packed columns in HPLC.
The modeling, characterization, and design of monolithic
The modeling, characterization, and design of monolithic inductors for silicon RF IC's Abstract: The results of a comprehensive investigation into the characteristics and optimization of inductors fabricated with the top-level metal of a submicron silicon VLSI process are presented. A computer program which extracts a physics-based model of microstrip components that is suitable for circuit
Monolithic Chromatography Chemical & Engineering News
By fine-tuning their synthesis method, the group prepared silica monoliths with permeabilities comparable with those of columns packed with 5-µm particles but with the separating power of
Monolithic Silicas in Separation Science : Concepts
Find many great new & used options and get the best deals for Monolithic Silicas in Separation Science : Concepts, Syntheses, Characterization, Modeling and Applications (2011, Hardcover) at the best online prices at eBay! Free shipping for many products!
Wiley: Monolithic Silicas in Separation Science: Concepts
16.5 Monolithic Silica Columns. 16.6 Applications of Monolithic Silica in Proteomics A Brief Survey. 16.7 Summary and Conclusions. References. 17 Silica Monoliths in Solid-Phase Extraction and Solid-Phase Microextraction (Zhi-Guo Shi, Li Xu, and Hian Kee Lee). 17.1 Introduction. 17.2 Extraction Process. 17.3 Extraction Platforms. 17.4
Performance of a Monolithic Silica Column in a Capillary
A continuous macroporous silica gel network was prepared in a fused-silica capillary and evaluated in reversed-phase liquid chromatography. Under pressure-driven conditions, the monolithic silica column derivatized to C18 phase (100 μm in diameter, 25 cm in length, silica skeleton size of ∼2.2 μm) produced plate heights of about 23 and 81 μm at 0.5 mm/s with a pressure drop of 0.4 kg/cm2
Monolithic Silicas in Separation Science: Concepts
Edited by the experts and pioneers in the field, this is the first monograph to cover the topic, containing the must-have information hitherto only scattered among journals. Clearly divided into sections on preparation, characterization and modeling, and applications, this is essential reading for chemists, chromatographers, analytical chemists, biochemists and biologists.
Monolithic Silica Adsorbents; MonoTrap
MonoTrap, Monolithic Silica Adsorbents. MonoTrap is a new material for easy trapping of compounds and extracting by solvent or temperature.
US6210570B1 Monolithic silica column Google Patents
Monolithic silica column Download PDF Info Publication number US6210570B1. US6210570B1 US09/137,607 US13760798A US6210570B1 US 6210570 B1 US6210570 B1 US 6210570B1 US 13760798 A US13760798 A US 13760798A US 6210570 B1 US6210570 B1 US 6210570B1 Authority US United States Prior art keywords monolith hydrosol capillary column syneresis Prior art date 1998
New Silica Gel-Based Monolithic Column for Nano-Liquid
Silica-based monolithic columns are synthesized via the sol-gel process that allows independent control of the size of the silica skeleton and through pores (10, 11). Sol-gel processes involve the hydrolysis of a metal alkoxide (precursor), followed by condensation and polycondensation reactions. Hydroxyorganic compounds can be merged with the polysilicate aggregates, producing organically
Monolithic Silica Capillary Columns with Improved
Plain monolithic silica-based capillary columns were prepared by acidic hydrolysis of TMOS in the presence of polyethylene glycol (molar mass of 10,000) and urea, and modified by 20% (v/v) of -MAPS in 95% (v/v) ethanol containing 5% (v/v) of acetic acid and water (1:1). The preparation protocol was outlined in our previous study [29]. Columns were flushed with absolute ethanol, dried under a
Monolithic Silica Columns of Various Format in
The following particulate and monolithic silica columns were implemented in a fully automated and flexible multidimensional LC/MS system with integrated sample clean-up, to perform the analysis of endogeneous peptides from filtered urine and plasma samples: restricted access sulphonic acid strong cation-exchanger (RAM-SCX) for sample clean-up, RP 18 Chromolith guard columns as trap columns
Recent Progress in Monolithic Silica Columns for High
Monolithic silica columns have greater (through-pore size)/(skeleton size) ratios than particulate columns and fixed support structures in a column for chemical modification, resulting in high-efficiency columns and stationary phases. This review looks at how the size range of monolithic silica columns has been expanded, how high-efficiency monolithic silica columns have been realized, and how
Monolithic Chromatography Chemical & Engineering News
By fine-tuning their synthesis method, the group prepared silica monoliths with permeabilities comparable with those of columns packed with 5-µm particles but with the separating power of
Wiley: Monolithic Silicas in Separation Science: Concepts
16.5 Monolithic Silica Columns. 16.6 Applications of Monolithic Silica in Proteomics A Brief Survey. 16.7 Summary and Conclusions. References. 17 Silica Monoliths in Solid-Phase Extraction and Solid-Phase Microextraction (Zhi-Guo Shi, Li Xu, and Hian Kee Lee). 17.1 Introduction. 17.2 Extraction Process. 17.3 Extraction Platforms. 17.4
Performance of a Monolithic Silica Column in a Capillary
A continuous macroporous silica gel network was prepared in a fused-silica capillary and evaluated in reversed-phase liquid chromatography. Under pressure-driven conditions, the monolithic silica column derivatized to C18 phase (100 μm in diameter, 25 cm in length, silica skeleton size of ∼2.2 μm) produced plate heights of about 23 and 81 μm at 0.5 mm/s with a pressure drop of 0.4 kg/cm2
Monolithic Silicas in Separation Science: Concepts
Edited by the experts and pioneers in the field, this is the first monograph to cover the topic, containing the must-have information hitherto only scattered among journals. Clearly divided into sections on preparation, characterization and modeling, and applications, this is essential reading for chemists, chromatographers, analytical chemists, biochemists and biologists.
The New Potential of Monolithic Silica Columns in Fast
30/03/2012· New research silica monolithic columns designed for fast LC were synthesized by decreasing the throughpore size by a factor two and the external porosity by about 10% with respect to the first generation of monolithic columns. The measurement of their kinetic properties showed that they can provide nearly three times larger efficiency. Better, it is demonstrated that they can potentially be a
New Silica Gel-Based Monolithic Column for Nano-Liquid
Silica-based monolithic columns are synthesized via the sol-gel process that allows independent control of the size of the silica skeleton and through pores (10, 11). Sol-gel processes involve the hydrolysis of a metal alkoxide (precursor), followed by condensation and polycondensation reactions. Hydroxyorganic compounds can be merged with the polysilicate aggregates, producing organically
Recent Progress in Monolithic Silica Columns for High
Monolithic silica columns have greater (through-pore size)/(skeleton size) ratios than particulate columns and fixed support structures in a column for chemical modification, resulting in high-efficiency columns and stationary phases. This review looks at how the size range of monolithic silica columns has been expanded, how high-efficiency monolithic silica columns have been realized, and how
Monolithic Silica Capillary Columns with Improved
Plain monolithic silica-based capillary columns were prepared by acidic hydrolysis of TMOS in the presence of polyethylene glycol (molar mass of 10,000) and urea, and modified by 20% (v/v) of -MAPS in 95% (v/v) ethanol containing 5% (v/v) of acetic acid and water (1:1). The preparation protocol was outlined in our previous study [29]. Columns were flushed with absolute ethanol, dried under a
Monolithic HPLC Columns
Monolithic silica technol-ogy is the solution for reduced sample loading time and column equilibration time; more analysis time means more proteins identified in complex mixtures. • For efficient and selective separation of pep-tides and protein digests • Low column backpressure allows for sample loading at high flow rates ( -4 µL/min) reduc-ing sample loading times. • Rapid re
Monolithic VS regular silica columns Chromatography
15/09/2015· Monolithic VS regular silica columns. Discussions about HPLC, CE, TLC, SFC, and other "liquid phase" separation techniques. 9 posts Page 1 of 1. Monolithic VS regular silica columns. vladchern Posts: 5 Joined: Wed Sep 09, 2015 3:55 pm Location: Calgary, Canada. by vladchern » Wed Sep 09, 2015 4:28 pm Probably, there is already a topic discussing the pros and cons of monolithic
What is a monolithic integrated circuit? Quora
Integrated circuit is a low cost come miniature electronic circuit consisting of Active and Passive components fabricated on the surface of the silicon chip. Integrated circuits can be classified on the basis of 1)Number of components or transisto...
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