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US 11,725,093 B2Granted
Bioderived heat transfer fluids and methods of making the same
AssigneeAlliance for Sustainable Energy, LLC
InventorsNicholas Earl Thornburg, Jacob S. Kruger
Life of this patent
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Abstract
The present disclosure relates to a composition that includes a lignin-derived mixture that includes at least one of a dimer, a trimer, and/or a tetramer, where the composition is characterized by a thermal stability up to a maximum temperature between about 260° C. and about 300° C.
Claims23
A composition comprising:
- a lignin-derived mixture comprising at least one of a dimer, a trimer, or a tetramer, wherein:
- the dimer, the trimer, or the tetramer comprise a linkage type of at least one of a bibenzyl (β-1′) linkage, an α-O-4′ alkyl aryl ether linkage, a β-O-4′ alkyl aryl ether linkage, a diaryl ether (4-O-5′) linkage, a phenyl coumaran (β-5′) linkage, a resinol (β-β′) linkage, or a biphenyl (5-5′) linkage, and
- the composition is characterized by a thermal stability up to a maximum temperature between 260° C. and 300° C.
A method comprising:
- contacting a first oil with a solvent to create a mixture comprising a light phase and a heavy phase, wherein:
- the solvent comprises an oxygen-containing hydrocarbon,
- the first oil comprises a lignin-derived compound comprising at least one of a dimer, a trimer, or a tetramer,
- the dimer, the trimer, or the tetramer comprise a linkage type of at least one of a bibenzyl (β-1′) linkage, an α-O-4′ alkyl aryl ether linkage, an β-O-4′ alkyl aryl ether linkage, a diaryl ether (4-O-5′) linkage, a phenyl coumaran (β-5′) linkage, a resinol (β-β′) linkage, or a biphenyl (5-5′) linkage, and
- the contacting transfers at least a portion of the lignin-derived compound from the first oil to the light phase.
2 more elements
Dependencies are inferred from the claim text.