Due to its unique internal structure, silica gel is radically different to other SiO 2 -based materials. Silica gel is a porous, amorphous form and is composed of SiO 2. Due to these properties, silica gel is used in environments where a low temperature, moderate water vapor pressure, and high adsorption capacity are required.
Refrig 34 (5), 1244–1250 (2011). Courbon, E. et al. Further improvement of the synthesis of silica gel and CaCl 2 composites: Enhancement of energy storage density and stability over cycles for solar heat storage coupled with space heating applications. Sol. Energy 157, 532–541 (2017).
According to the size of the microporous structure, silica gel is categorized into four types: A-type (fine-pored silica gel), B-type, C-type (coarse-pored silica gel), and microsphere silica gel. Spherical fine-pored silica gel produced by Henan Pubang Environmental Protection Material Co., Ltd was used in this study.
In this study, we employed nuclear magnetic resonance (NMR) to clarify the binding form of silica gel adsorbing water, analyzed the internal water form and change in the water content of silica gel before and after water adsorption, and further obtained the energy-storage mechanism of silica gel and the reaction equation.
Here, the Coats–Redfern (C–R) integral method is adopted to determine the most suitable mechanism function for the thermal desorption of silica gel. The FWO method is employed to determine the activation energy E of the reaction, and the mechanism function is used to calculate the pre-exponential factor A of the reaction.
Silica gel was known as early as 1640, but it remained a curiosity until its adsorbent properties were discovered. Silica gel, a highly porous, noncrystalline form of silica, is used to remove moisture from gases and liquids, to thicken liquids, to impart a dull surface to paints and synthetic films, and for other purposes.
Wanneer silicagel in aanraking wordt gebracht met vloeibaar water kunnen de korrels uit elkaar knallen. De reactie is minder hevig bij de sachets silicagel die gebruikt worden om producten droog te houden. • Stof van silicaten kan in de regel stoflongen of silicose veroorzaken. Silicagel is voor zover bekend in dit verband ongevaarlijk.
De silica gel zakjes zijn bij ons in verschillende uitvoeringen verkrijgbaar. Deze verschillen qua verpakkingsmateriaal dat ofwel stofarm of stofdicht is. ... Dit kan worden gebruikt voor de regeneratie. Industriële droogmiddelen zijn doorgaans …
OverviewUsesHistoryTypesPropertiesRegenerationPreparationHazards
Moisture can cause mold and spoilage in many items. It can also damage electronics by causing condensation and shorten the lifespan of chemicals, like those in vitamins. Silica gel packets help by absorbing moisture and extending the life of these items. Silica gel may also be used to keep the relative humidity inside a high frequenc…