Questions tagged [desiccation]
Removal of water, typically to create anhydrous reagents.
12
questions
3
votes
0
answers
996
views
What is the standard method for activating molecular sieves with microwave radiation?
Typically, molecular sieves are dried under vacuum at elevated temperatures (about 200 to 300 °C depending on pore size) for several hours.
Alternatively, microwave heating has been used for ...
- 38.4k
0
votes
1
answer
181
views
Must a desiccant be made anhydrous before it can be used for drying?
I'm writing about the treatment of methane gas, and in one part of the process, the methane gas is dried in a tank called a scrubber. Here, a desiccant called triethylene glycol is used.
Thinking ...
- 205
-4
votes
1
answer
75
views
2
votes
0
answers
49
views
Extimating the repartition of water between hygroscopic compounds
Sulfuric acid is sometimes used as a drying agent.
According to literature, one possible application is, for instance, in the drying of bromine.
Some questions came to my mind: which concentration ...
user32223
3
votes
0
answers
199
views
Are there any dangers while handling cobalt dichloride?
I use a desiccant named Drierite to remove water from air in experiments. It is composed of $98\%\ \ce{CaSO4}$ and $2\%\ \ce{CoCl2}$. Every once in a while the Drierite gets saturated with water vapor ...
- 139
1
vote
0
answers
38
views
Efficient, low overhead means to scrub acid gases without water loss? [closed]
This question is pretty much what it says on the tin: what would be an efficient (low pressure drop, reasonable energy consumption), low overhead (simple, lightweight) means to scrub acid gases from a ...
- 361
1
vote
0
answers
104
views
What is the problem with my desiccant experiment?
Ok, so here's some context. For my experiment, I wanted to see which desiccant would absorb the most water in a low humidity environment (30% RH). To conduct this experiment, I placed the desiccant ...
- 11
3
votes
2
answers
910
views
Can sodium acetate anhydrous be used as a desiccant?
Sodium acetate trihydrate can be converted to sodium acetate anhydrous easily with an oven. I've been told to quickly store sodium acetate anhydrous in a sealed container because it takes water from ...
- 207
2
votes
1
answer
1k
views
How does baking soda works as an desiccant?
The thing is that I did a project from a website which is about the science of mummification and I can't find a way to explain the process of desiccation of the hot dog with the baking soda.
By this ...
- 179
1
vote
2
answers
5k
views
Can I extract water from diethyl ether to get anhydrous diethyl ether?
I am trying to get anhydrous diethyl ether. So, I am considering using a condensor to heat up diethyl ether and extract water. Would this method work?
- 41
8
votes
1
answer
2k
views
Vacuum distillation apparatus selection and configuration
I want to assemble a "hobbyist-level" vacuum distillation apparatus for extracting small volumes of "typical" solvents (e.g., water, alcohols, ketones, diols).
I already have standard lab glassware ...
- 3,340
15
votes
4
answers
1k
views
Relative strength of desiccants
Is it meaningful to characterize the relative strength of desiccants? For example, is there a measure of hygroscopy, or an ordering of desiccants, such that higher ones will always dry lower ones?
...
- 3,340