Process for the catalytic cyclodimerization of cyclic olefins
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United States of America Patent
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Aug 13, 1996
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app pub date -
Dec 9, 1993
filing date -
Dec 9, 1993
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Abstract
A catalytic process for the dimerization of norbornene and/or norbornadiene using a reduced valence state Group VIB metal oxide as the catalyst, preferably Cr(II) on a porous support such as silica. The product norbornene dimer or norbornadiene dimer is obtained in high yield and high stereospecificity at greater than 90 weight percent of the exo-trans-exo stereoisomer. The norbornene dimer is useful as a high energy density fuel. The norbornadiene dimer can be further functionalized to yield novel chemical intermediates or polymerized or copolymerized with other olefins. The norbornadiene dimer can also be hydrogenated for high energy fuel applications.
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