Questions tagged [drying]

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Use of boron(III) oxide for drying acetone

Acetone undergoes aldol self-condensation in the presence of acids or bases: which makes drying agents such as 3A/4A molecular sieves, barium oxide, potassium hydroxide and carbonate (basic), copper(...
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3 votes
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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 ...
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Help drying polyurethane sealent top coat

I've used a polyurethane water sealant coating for concrete that is called (vulkem 951 part A ) and it was supposed to mixed with part b the catalyst that starts the drying process but do to a ...
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How to dry sludges?

I sometimes need to dry sludges or thick, sticky slurries. The way this is typically done in highly equipped labs is to use a spray dryer which liquifies the slurry, heats it up, then sprays it at ...
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2 votes
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What reaction happens between glucose and ammonium chloride when drying?

I have the following observations: When I put a solution of glucose (80 g/ℓ) and ammonium chloride (20 g/ℓ) in a drying cabinet at 37°C (maybe a bit warmer) a brown substance forms when all (or most) ...
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I want to purposefully dry up (polymerize) an entire bottle of ethyl cyanoacrylate (Super Glue). How to do it?

So, I want to do some tests with the solid form of ethyl cyanoacrylate. I have a small 20g bottle which was very cheap so I don't mind. How can I cause the entire contents of the bottle to set and ...
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-1 votes
1 answer
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How to accelerate the evaporation of water at temperature below 5 °C? [closed]

How can we make the water to evaporate at low temperature? Does addition of high evaporating solvents help or decrease in the hydrogen bonding by addition of solute will help? Is there any other ...
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2 votes
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Does K2CO3 react in minute amounts with glassware at higher temperatures?

At a temperature of $\pu{750 ^\circ C}$, $\ce{K2CO3}$ and $\ce{SiO2}$ react with each other in substantial proportions, forming $\ce{K2SiO3}$ and $\ce{CO2}$ in the process$\ce{^{[1]}}$. We all know as ...
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