Difference between revisions of "Catalyst"
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Revision as of 10:43, 30 November 2010
Catalysts
Sodium Hydroxide and Potassium Hydroxide are popular catalysts for home biodiesel production. They are mixed with Methanol to form a Methoxide.
Sodium Hydroxide (NaOH)
- inexpensive
- harder to dissolve into solution with Methanol
- solid Glycerol by-product
- accurate titration required to avoid making excess soap
Potassium Hydroxide (KOH)
- more costly
- easy to dissolve into solution with Methanol
- liquid Glycerol by-product
- forgiving with inaccurate titrations
Storage and handling
Both catalysts should be kept in a dry, sealed airtight container away from the reach of children.
Protective gloves and eye equipment must be worn during handling, as both are strong bases and will dissolve flesh into soap.
Care should be taken with "flake" products to avoid inhalation.
