Heterogeneous catalyst for transesterification and method of preparing same
AssigneeCrystaphase Products, Inc.
InventorsUmakant Pravinchandra Joshi, Peter Gregory Ham
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Abstract
A transesterification catalyst that is heterogeneous and a method for preparing said transesterification catalyst are provided. The catalyst can be used in a variety of transesterification reactor configurations including CSTR (continuous stirred tank reactors), ebullated (or ebullating) beds or any other fluidized bed reactors, and PFR (plug flow, fixed bed reactors). The catalyst can be used for manufacturing commercial grade biodiesel, biolubricants and glycerin.
Claims13
A transesterification catalyst comprising a double metal salt, wherein the double metal salt has the formula ZxQy(PO4)nH2O where x is a rational number in the range from 0.5 to 4, y is a rational integer in the range from 2 to 8, and n is a rational integer in the range from 4 to 8, and wherein the double metal salt comprises a first metal phosphate with the metal selected from the group consisting of sodium and lithium and a second metal phosphate with the metal selected from the group consisting of calcium and barium.
A catalyst slurry for use in a transesterification process comprising:
- a triglyceride-containing oil or fat;
- and
- a double metal salt having the formula ZxOy(PO4)nH2O, wherein:
- Z consists of potassium,
- Q consists of calcium,
- x is a rational number in the range from 0.5 to 4,
- y is a rational integer in the range from 2 to 8, and
- n is a rational integer in the range from 4 to 8.
A biodiesel fuel product comprising:
- an alkyl ester;
- and
- a transesterification catalyst comprising a double metal salt having the formula ZxQy(PO4)nH2O, wherein:
- Z consists of potassium,
- Q consists of calcium,
- x is a rational number in the range from 0.5 to 4,
- y is a rational integer in the range from 2 to 8, and
- n is a rational integer in the range from 4 to 8;
- wherein the transesterification catalyst is capable of being separated from the alkyl ester and reused.
Dependencies are inferred from the claim text.