Cheaper and user friendlier Geopolymerization Agents
Oct 28, 2017 9:12:55 GMT -8
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Post by Deleted on Oct 28, 2017 9:12:55 GMT -8
Monopotassium phosphate, MKP, (also potassium dihydrogenphosphate, KDP, or monobasic potassium phosphate),
KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion which is used as a fertilizer, a food additive and a fungicide.
Solubility in water
22.6 g/100 mL (20 °C)
83.5 g/100 mL (90 °C)
en.wikipedia.org/wiki/Monopotassium_phosphate
Monopotassium phosphate is available at bulk fertilizer stores.
For Example:
www.mbferts.com/Haifa-MKP-Mono-Potassium-Phosphate-BLOOM-Booster-Fertilizer-535.htm
Sodium carbonate (also known as washing soda, soda ash and soda crystals, and in the monohydrate form as crystal carbonate),
Na2CO3, is the water-soluble sodium salt of carbonic acid.
en.wikipedia.org/wiki/Sodium_carbonate
Soda ash is available from virtually any pottery supplier.
In solution soda ash plus monopotassium phosphate react as follows:
Na2CO3 + KH2PO4 = Na2KPO4 + CO2 + H2O
Na2CO3 molar mass ~ 106g ~ 44%
KH2PO4 molar mass ~ 106g ~ 56%
Monopotassium phosphate is a weak acid thus additional heat is required for complete reaction.
Keep it short below the boiling point until the production of gas comes to a halt.
The mixture can be acidified with additional 10% citric acid to drive the carbon out at lower temperatures.
Example clay mixture:
10% monopotassium phosphate
8% Soda ash
2% citric acid
10% portland cement
70% clay
The monopotassium phosphate, Soda ash, and citric acid must first be reacted
to drive the carbon out before added to the rest of the mixture.
Higher amounts of portland cement will speed up the setting time,
however more than 20% portland cement will reduce the heat resistance significantly.
The following mixture gives a quite heat resistant concrete,
( about 1000°C )
Lined with ceramic fiber it could likely serve as a riser.
10% monopotassium phosphate
8% Soda ash
2% citric acid
13% clay
67% portland cement
The monopotassium phosphate, Soda ash, citric acid and clay must first be reacted before added to the cement.
Note:
The citric acid is an avoidable shortcut.
KH2PO4, is a soluble salt of potassium and the dihydrogen phosphate ion which is used as a fertilizer, a food additive and a fungicide.
Solubility in water
22.6 g/100 mL (20 °C)
83.5 g/100 mL (90 °C)
en.wikipedia.org/wiki/Monopotassium_phosphate
Monopotassium phosphate is available at bulk fertilizer stores.
For Example:
www.mbferts.com/Haifa-MKP-Mono-Potassium-Phosphate-BLOOM-Booster-Fertilizer-535.htm
Sodium carbonate (also known as washing soda, soda ash and soda crystals, and in the monohydrate form as crystal carbonate),
Na2CO3, is the water-soluble sodium salt of carbonic acid.
en.wikipedia.org/wiki/Sodium_carbonate
Soda ash is available from virtually any pottery supplier.
In solution soda ash plus monopotassium phosphate react as follows:
Na2CO3 + KH2PO4 = Na2KPO4 + CO2 + H2O
Na2CO3 molar mass ~ 106g ~ 44%
KH2PO4 molar mass ~ 106g ~ 56%
Monopotassium phosphate is a weak acid thus additional heat is required for complete reaction.
Keep it short below the boiling point until the production of gas comes to a halt.
The mixture can be acidified with additional 10% citric acid to drive the carbon out at lower temperatures.
Example clay mixture:
10% monopotassium phosphate
8% Soda ash
2% citric acid
10% portland cement
70% clay
The monopotassium phosphate, Soda ash, and citric acid must first be reacted
to drive the carbon out before added to the rest of the mixture.
Higher amounts of portland cement will speed up the setting time,
however more than 20% portland cement will reduce the heat resistance significantly.
The following mixture gives a quite heat resistant concrete,
( about 1000°C )
Lined with ceramic fiber it could likely serve as a riser.
10% monopotassium phosphate
8% Soda ash
2% citric acid
13% clay
67% portland cement
The monopotassium phosphate, Soda ash, citric acid and clay must first be reacted before added to the cement.
Note:
The citric acid is an avoidable shortcut.
