kaviaari
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Replacing betonite
I have a slight problem with microwave assisted synthesis. Aniline needs to be absorbed in betonite in order to convert it to diphenylamine. The
composition of the betonite used in the original synthesis was the following.
SiO2 (73.4 %), Al2O3 (14.35 %), Fe2O3 (1.72 %), CaO (0.52%), MgO (2.32%), K2O (0.44 %), Na2O (0.29 %), TiO2 (0.24 %)
It would be quite hard to buy, measure and mix thease components to a homogeneous mixture. The synthesis can be found from http://pages.unibas.ch/mdpi/ecsoc/a0031.htm. As the table at the end of the study says one can't get much anything out of this without using
betonite. But I still wonder if betonite could be replaced with something more simpler?
[Edited on 17-5-2007 by kaviaari]
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IPN
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You can order bentonite from Varnia Oy (for the finnish people here).
I don't think it needs to be specifically from Romania. 
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not_important
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Simply mixing those oxides will not give you bentonite, the structure of clays are generally complex and require hydrothermal techniques.
On the other hand, most pottery supply shops will stock bentonite of one sort or another. Note that there are several varieties, in many cases it will
be given a treatment with acid or ammonium salts and then dried and ignited. In some cases the clay will be treated with specific metal salts, giving
materials such as clayfen, claycop, and clayan.
http://journals.tubitak.gov.tr/chem/issues/kim-02-26-3/kim-2...
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dapper
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Bentonite can be sourced from cheap kitty litter at Wal Mart
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Ozone
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You beat me to it! But...The kitty litter must first be extracted to remove all traces of fragrance (it will get into your product and can be
troublesome to remove). Unless, I suppose, a nice lavender scent might be desirable?
Cheers,
O3
[Edited on 17-5-2007 by Ozone]
-Anyone who never made a mistake never tried anything new.
--Albert Einstein
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not_important
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Most kitty litter has a bunch of other crap in it, even before that cats use it; on top of that not all cat litter is clay based. Better to go with
the pottery grade, or the spill clean-up packs, rather than messing with litter.
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Ozone
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| Quote: | Originally posted by not_important
Most kitty litter has a bunch of other crap in it, even before that cats use it. |
Ha! Too funny!
You must buy the "scoopable" kind. There appears to be some sort of blue-green particles in there as well.
Flavor crystals?
O3
-Anyone who never made a mistake never tried anything new.
--Albert Einstein
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not_important
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| Quote: | Originally posted by Ozone
You must buy the "scoopable" kind. There appears to be some sort of blue-green particles in there as well.
Flavor crystals?
O3 |
Remind me never to eat your cooking 8-)
No cats, no kitty litter. But I'm always checking out alternative sources of raw materials.
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chemrox
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Wyoming bentonite is a cheap clay used as a drilling fluid in oil exploration and other drilling programs. Montmorillonite is the mineral in it. A
sheet silicate that is easily hydrated.
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