Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing
Patent
1999-03-26
2000-03-07
Bell, Mark L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Halogen containing
C07C 1700, C07C 1900, C07C 2100, C07C 2102
Patent
active
060342900
ABSTRACT:
Porous microcomposites comprising a perfluorinated ion-exchange polymer (PFIEP) containing pendant metal cation exchanged sulfonate groups, metal cation exchanged carboxylate groups, or metal cation exchanged sulfonate and carboxylate groups, wherein the metal cation may be ligand coordinated, and optionally pendant sulfonic acid groups, carboxylic acid groups, or sulfonic acid and carboxylic acid groups, the PFIEP being entrapped within and highly dispersed throughout a network of metal oxide, a network of silica or a network of metal oxide and silica can be prepared from PFIEP and one or more precursors selected from the group consisting of a metal oxide precursor, a silica precursor, and a metal oxide and silica precursor using an in situ process. Preferred metal cations are Cr, Sn, Al, Fe, Os, Co, Zn, Hg, Li, Na, Cu, Pd or Ru. Such microcomposites have a first set of pores having a pore size diameter ranging from about 0.5 nm to about 75 nm and may further comprise a second set of pores having a diameter ranging from about 75 nm to about 1000 nm. These microcomposites possess high surface area and exhibit high catalytic activity. The catalyst is used to isomerize 1,4-dichloro-2-butene to 3,4-dichloro-1-butene, a precursor to neoprone.
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Harmer Mark Andrew
Sun Qun
Bell Mark L.
E. I. Du Pont de Nemours and Company
Pasterczyk J.
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