Process for isomerization of tetrahydrodicyclopentadiene using supported acidic ionic liquid as a catalyst
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United States of America Patent
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Sep 13, 2011
Grant Date -
Sep 30, 2010
app pub date -
Mar 24, 2009
filing date -
Mar 24, 2009
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Abstract
A process for isomerization of tetrahydrodicyclopentadiene using a supported acidic ionic liquid as catalyst is provided. In the presence of the supported acidic ionic liquid, endo-tetrahydrodicyclopentadiene is isomerized to exo-tetrahydrodicyclo-pentadiene, wherein the supported acidic ionic liquid includes a porous support and an acidic ionic liquid, and the acidic ionic liquid includes an aluminum halide, and a quaternary ammonium halide or a quaternary phosphonium halide. The porous support is impregnated with the acidic ionic liquid. Furthermore, under different reaction conditions, the exo-tetrahydrodicyclopentadiene product can be isomerized to adamantane in the presence of such a supported acidic ionic liquid.
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