Monolithic Silica

المنتجات الساخنة

Advancements in the preparation and application of

网页2021年3月1日Chromolith RP-18e monolithic column is a reversed phase silica monolithic column in which the separation mechanism is mainly attributed to hydrophobic interactions. MDMA and its analogue derivatives are basic, ionizable, mid

Contact

Monolithic Silica with Bimodal Pore Structure MilliporeSigma

网页Monolithic Silica with Bimodal Pore Structure Very high matrix-tolerance and long column life-time Enables rapid separations due to very low column back pressure High

Contact

Monolithic Silica SnG Inc.

网页Monolithic Silica. Monolithic silica is an integral porous body with a characteristic structure connected with a mesh-like skeleton of

Contact

Recent advances in sol–gel synthesis of monolithic silica

网页2013年6月1日Studies on sol–gel synthesis of monolithic silica and silicate glasses are summarized. Major research efforts have been devoted to avoid the fracture problems,

Contact

Monolithic Silica for Fast HPLC: Current Success and Springer

网页2011年8月12日As an approach for fast HPLC, monolithic silica has proven to be highly effective. It is especially successful for routinely obtaining fast isocratic HPLC analyses of

Contact

Recent Progress in Monolithic Silica Columns for High-Speed and

网页Monolithic silica columns possess a network of structures consisting of porous silica skeletons with a bimodal pore arrangement, in which large through-pores (1.5–8 μm)

Contact

Hierarchical porous silica monoliths: A novel class of

网页2016年1月1日Carbon monolithic replicas could be obtained after silica removal. BET surface area and pore volume up to 1400 m 2 g −1 and 3.1 mL g −1,respectively, were

Contact

Recent advances in sol–gel synthesis of monolithic silica

网页2018年4月18日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

Contact

Monolithic HPLC column Wikipedia

网页Monolithic columns can be broken down into two categories, silica-based and polymer-based monoliths. Silica-based monoliths are known for their efficiency in separating

Contact

Frontiers Mass Transfer in Hierarchical Silica Monoliths Loaded

网页2021年12月13日The monolithic reactors exhibit a permeability as high as 2 µm2 with a pressure drop below 9 bar over a flow rate range of 2 20 cm3 min-1 (solvent: water).

Contact

In situ one-step construction of monolithic silica aerogel-based

网页2020年8月15日Monolithic silica aerogel-based composite PCMs possess excellent shape stability and high compressive strength (11 MPa). • The silica aerogel-based composite PCMs have low thermal conductivity (0.12 W

Contact

Mechanical properties of monolithic silica aerogels made from

网页2014年1月1日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

Contact

Monolithic HPLC Columns .NET Framework

网页The Onyx Monolithic C18 in the 150 x 0.1 mm dimension combines high efficiency, peak capac-ity, and loadability all in a format for nano-LC proteomics applications. 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.

Contact

Monolithic silica columns with various skeleton sizes and through

网页2002年6月28日Monolithic silica columns have been prepared in 50–100-μm fused-silica capillaries for use in HPLC and CEC [13], [15], [16], [17]. Under pressure-driven conditions, a monolithic silica column with 2 μm skeletons and large through-pores of up to 10 μm in a 50-μm capillary showed efficiency of 16 000 plates/25 cm column length and 100 000

Contact

Monolithic Silica with Bimodal Pore Structure MilliporeSigma

网页Monolithic Silica with Bimodal Pore Structure. Thanks to their patented monolithic silica technology, Chromolith ® HPLC columns allow you to race through separations with maximum robustness and selectivity—at minimal back pressure. Very high matrix-tolerance and long column life-time. Enables rapid separations due to very low column back

Contact

One-pot synthesis of monolithic silica-cellulose aerogel applying

网页2021年7月26日The monolithic silica-cellulose aerogel can be synthesized from low modulus (1.5) silicate sol-gel process. The embedded CO 2 emission of this new aerogel is significantly reduced, reflected by the obviously lower footprint of olivine sodium silicate compared to commercial water glass, namely 2.481 tCO 2 /t and 5.517 tCO 2 /t,

Contact

New Silica Gel-Based Monolithic Column for Nano-Liquid

网页2012年5月21日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.

Contact

Chromolith ® RP-18 endcapped MilliporeSigma

网页Chromolith ® columns are made of monolithic silica with a characteristic bimodal pore structure. Chromolith ® Performance RP-18 endcapped HPLC columns have macropores with 2 μm diameter, giving a column efficiency exceeding 80,000 plates/meter. The mesopores are 13 nm (130 Å) and the surface modification is octadecylsilane with full

Contact

Monolithic silica rod columns for high-efficiency reversed-phase

网页2011年4月15日Chromatographic properties of a new type of monolithic silica rod columns were examined. Silica rod columns employed for the study were prepared from tetramethoxysilane, modified with octadecylsilyl moieties, and encased in a stainless-steel protective column with two polymer layers between the silica and the stainless-steel

Contact

Development of hydrophobic and optically transparent monolithic silica

网页2016年10月26日In the present , highly transparent, monolithic and hydrophobic silica aerogel monoliths were prepared by using tetraethoxysilane (TEOS) as precursor and methyltriethoxysilane (MTES) as co-precursor with different MTES/TEOS molar ratios (M) by two-step acid–base catalyzed sol–gel process followed by supercritical alcohol drying.

Contact

Formation of monolithic silica gel microhoneycombs

网页Monolithic silica gel microhoneycombs, which have an array of straight macropores within their structure and developed micro/mesopores inside their walls, were prepared using pseudosteady state growth of ice

Contact

Monolithic silica aerogel in superinsulating glazings

网页1998年10月1日Silica aerogel is an open-pored transparent material with optical and thermal properties that makes the material very interesting as an insulation material in windows. Silica aerogel is not a new invention—it was described by Kistler (1931)and has since been the subject of more or less interest. Silica aerogel is usually manufactured

Contact

Properties of monolithic silica columns for HPLC PubMed

网页Monolithic silica columns and their use in high peak-capacity HPLC separations are reviewed. Monolithic silica columns can potentially provide higher overall performance than particle-packed columns based on the variable external porosity and variable through-pore size/skeleton size ratios. The high

Contact

Antibody-coupled monolithic silica microtips for highthroughput

网页2014年8月29日Here we constructed anti-CD9 antibody-coupled highly porous monolithic silica microtips which allowed automated rapid and reproducible exosome extraction from multiple clinical samples.

Contact

Mechanical properties of monolithic silica aerogels made from

网页2014年1月1日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

Contact

synthesis and characterization of monolithic ambient

网页2020年5月22日In this work, monolithic silica aerogels were prepared in pure water within 4 h by using MTMS as the precursor under ambient pressure drying (APD). The effects of the volume ratio of H2O/MTMS, CTAB content and NH3H2O concentration on the properties of MTMS-based aerogels (MSA) were investigated experimentally. The

Contact

Hydrophobic monolithic silica with abundant pore as Springer

网页2013年6月11日Hydrophobic (water CA, 155° ± 5°) monolithic silica (HMS) material with abundant pore was prepared via sol–gel method by using tetraethoxysilane as silicon source and trimethylchlorosilane as surface modification agent. High specific area and appropriate pores structure of the HMS material supply enough space for storing the absorbed

Contact

Pd catalysts supported on dual-pore monolithic silica beads for

网页Two different types of palladium catalysts supported on dual-pore monolithic silica beads [5% Pd/SM and 0.25% Pd/SM(sc)] for chemoselective hydrogenation were developed. Alkyne, alkene, azide, and nitro functionalities and the aromatic N-Cbz protecting group were chemoselectively hydrogenated using 5% Pd/SM.

Contact

Cosolvent-free synthesis of macroporous silica gels and monolithic

网页Highlights Formation of monolithic macroporous silica gels was examined by a cosolvent-free (solventless) sol–gel method using tetraethoxysilane (TEOS) or tetramethoxysilane (TMOS) as silicon sources. Acid-catalyzed partial hydrolysis of TEOS and subsequent neutralization with imidazole (pK a =7.0) at 20°C caused gelation accompanied by phase

Contact

Monolithic zirconia aerogel from RSC Publishing

网页2018年12月12日Zirconia (ZrO2) aerogels are potential candidates for use at temperatures higher than those attainable with silica aerogels. However, fabricating a robust ZrO2 aerogel with a high thermal stability is still a

Contact