Arylation and the skeletal isomerization of fatty acid and alkyl esters thereof using metal ion exchanged solid materials as catalyst
View Patent ↗The present invention generally relates to a process for the arylation of unsaturated linear fatty acids and/or alkyl esters thereof to their aryl branched counterparts. Said arylation process comprises contacting said unsaturated linear fatty acids and/or alkyl esters thereof and one or more aromatic compounds with at least one metal ion exchanged solid material catalyst. The invention also relates to various derivatives prepared from the aryl branched fatty acids and/or alkyl esters prepared in accordance with the present invention.
1. A process for the arylation and isomerization of unsaturated linear fatty acids and/or alkyl esters to their aryl branched counterparts which comprises arylating and isomerizing a feedstock in the presence of at least one acidic zeolite catalyst, wherein said acidic catalyst comprises at least one metal ion exchanged acidic catalyst, wherein said catalyst comprises at least one non-zero valent metal ion, wherein said feedstock comprises unsaturated linear fatty acids, alkyl esters of unsaturated fatty acids or mixtures thereof and at least one aromatic compound.
2. The process according to claim 1 wherein the feedstock comprises of at least 50% by weight of unsaturated fatty acids, alkyl esters of unsaturated fatty acids or mixtures thereof.
3. The process of claim 2 wherein the feedstock comprises of at least 70% by weight oleic acid.
4. The process of claim 1 wherein the feedstock further comprises at least one aryl compound.
5. The process of claim 4 wherein said aryl compound is optionally substituted with at least one heteroatom.
6. The process of claim 4 wherein said aryl compound optionally contains at least one heteroatom in its cyclic ring structure.
7. The process of claim 4 wherein said aryl compound is selected from the group consisting essentially of benzene, toluene, xylene, cumene, aniline, phenol, cymene, styrene, mesitylene, mixtures thereof and the like.
8. The process of claim 1 wherein said non-zero valent metal ion is selected from the group consisting essentially of monovalent metal, divalent metal, trivalent metal, tetravalent metal, pentavalent metal, hexavalent metal and mixtures thereof.
9. The process of claim 8 wherein said higher valent metal is selected from the group consisting Lie, Cu + , Rh + , Ir + , Mg 2+ , Ca 2+ , Mn 2+ , Fe 2+ , Co 2+ , Ni 2+ , Cu 2+ , Zn 2+ , Sr 2+ , Mo 2+ , Pd 2+ , Sn 2+ , Pt 2+ , Sc 3+ , Cr 3+ , Fe 3+ , Co 3+ , Ga 3+ , Y 3+ , Nb 3+ , Ru 3+ , Rh 3+ , Ir 3+ , Bi 3+ , Ti 4+ , Mn 4+ , Zr 4+ , Mo 4+ , Sn 4+ , V 5+ , Nb 5+ , Mo 6+ , mixtures thereof and the like.
10. The process of claim 1 wherein the metal ion concentration is at least 0.001% of the exchange capacity of the catalyst support.
11. The process of claim 10 wherein the metal ion concentration is at least 0.5% of the exchange capacity.
12. The process of claim 10 wherein the metal ion concentration is in the range of 0.001 to above 200% exchange level.