reliable quality silica gel with large specific surface area for catalyst preparation
Characterization of silica gel prepared by using sol–gel
Silica gel characterization Specific surface area (S) of an adsorbent is a significant characteristic: it is the surface offered by the pores of one gram of solid (m 2 .g -1 ). It is the sum of external and internal surfaces, i.e. the geometrical surface of the particles and the surface developed by the walls of the pores.
preparation of silica gel, preparation of silica gel
Silica Gel With Large Specific Surface Area For Catalyst Preparation US $740.00 - $740.00 / Metric Ton
Silica gel - Wikipedia
Silica gel's high specific surface area (around 800 m 2 /g) allows it to adsorb water readily, making it useful as a desiccant (drying agent). Silica gel is often described as "absorbing" moisture, which may be appropriate when the gel's microscopic structure is ignored, as in silica gel packs or other products.
Reliable Procedure for Silica Gel Preparation
A simple and reliable method is described for preparation of silica gel media for Nitrosomonas and Nitrobacter species. Full text Get a printable copy (PDF file) of the complete article (294K), or click on a page image below to browse page by page.
StarDrypak - Silica Gel
Blue Silica gel. Material Description : Glassy, hard, irrgualr shaped granules with a very purity of approx. 99% SiO2 (Dry basis) and sn internal surface area of approx. 800 m2/g. Because of its very large surface area Silica gel exhibits a high adsorption for water vapour. Blue (indicating) silica gel contains 0.3 – 0.4 % of Cobalt (as Co).
Preparation and characterization of silica gel powders
The process of silica sol-gel formation and the thermal behavior as well as phase change of the silica powders during heat-treating process were studied, and the effect of heat-treating temperature on the specific surface area and apparent density of the silica powders was investigated.
What Are Different Silica Gel Options?
Silica gel prevents corrosion on other substances, has no taste or smell , and is nontoxic and chemically non-reactive. Its internal surface area is also very large. Silica Gel Desiccant Packets- Consumers use these packets of silica gel to absorb moisture, from medicines to electronics to, and many shoeboxes. You will often find them in
V. Pacáková, in Encyclopedia of Separation Science, 2000. Chromatographic Systems. Silica gel is the most common stationary phase in TLC and HPTLC of herbicides but reversed-phases (silica gel modified with C 8, C 18, e.g., RP-18 W, Nano-Sil C 18-100, silica gel impregnated with paraffin oil) can also be used.Silica gel impregnated with diethylene glycol is suitable for triazine herbicides.
US3313739A - Process for the preparation of silica gel
US3313739A US230726A US23072662A US3313739A US 3313739 A US3313739 A US 3313739A US 230726 A US230726 A US 230726A US 23072662 A US23072662 A US 23072662A US 3313739 A US3313739 A US 3313739A Authority US United States Prior art keywords gel sol relative humidity silica salt Prior art date 1962-10-15 Legal status (The legal status is an assumption and is not a legal conclusion.
Synthesis of quality silica gel; Optimization of parameters
Optimum parameters for the preparation of good quality silica gel were found to be sp. gr. of sodium silicate 1.20 and of sulphuric acid 1.10, finishing pH of the hydro sol at 3, mixing time 18-20 min and reaction temperature of 20 0C (room temperature).The quality silica gel produced had bulk density
Catalysts – Levasil Colloidal Silica – Nouryon
Through our global network of manufacturing facilities, we provide our professional partners with a reliable supply of high purity and consistent quality colloidal silica. Our Levasil Colloidal Silica portfolio covers the full range of properties such as particle size, surface area, size distribution and surface modification.