Difference between revisions of "Silica gel, commercial"
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| − | ==Description== | + | ==Description== |
| − | ==Applications== | + | The moisture adsorbing properties of silica gels are affected by factors such as capillary pore size or the inclusion of hygroscopic salts, resulting in a wide range of performance. Therefore, it is important to compare the buffering capacity of different types of silica gels to determine which silica gel has the best performance for a specific application. Thomson (1977) described the |
| + | specific moisture reservoir with the variable M. | ||
| + | * The moisture buffering capacity of a material is defined by its M value, which is the amount of water (in grams) that is gained or lost by 1 kilogram of silica gel for each 1% change in RH. | ||
| + | * Mh is the average amount of water (in grams) that is gained or lost by 1 kilogram of silica gel for each 1% change in RH. This is determined by repeatedly cycling silica gel between adsorption and desorption within a specific RH range until a constant value is measured. By taking hysteresis into account, MH reflects actual buffering performance. | ||
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| + | ==Applications== | ||
| + | |||
==Physical and Chemical Properties== | ==Physical and Chemical Properties== | ||
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==Resources and Citations== | ==Resources and Citations== | ||
[[Category:Materials database]] [[Category:MWG]] [[Category: Climate/Environment]][[Category: Comparisons]] | [[Category:Materials database]] [[Category:MWG]] [[Category: Climate/Environment]][[Category: Comparisons]] | ||
Revision as of 11:43, 20 July 2023
Description
The moisture adsorbing properties of silica gels are affected by factors such as capillary pore size or the inclusion of hygroscopic salts, resulting in a wide range of performance. Therefore, it is important to compare the buffering capacity of different types of silica gels to determine which silica gel has the best performance for a specific application. Thomson (1977) described the specific moisture reservoir with the variable M.
- The moisture buffering capacity of a material is defined by its M value, which is the amount of water (in grams) that is gained or lost by 1 kilogram of silica gel for each 1% change in RH.
- Mh is the average amount of water (in grams) that is gained or lost by 1 kilogram of silica gel for each 1% change in RH. This is determined by repeatedly cycling silica gel between adsorption and desorption within a specific RH range until a constant value is measured. By taking hysteresis into account, MH reflects actual buffering performance.