Abstract
Recent studies demonstrate that high-value chemicals can be obtained by selective conversion of polycyclic hydrocarbons such as naphthalene,biphenyl,and phenanthrene, over some zeolite catalysts. This article gives examples of shape-selective alkylation of naphthalene into 2,6-dialkylnaphthalene,ring-shift isomerization of sym-octahydrophenanthrene into sym-octahydroanthracene,shape-selective alkylation of biphenyl into 4,4'-dialkylbiphenyl,conformational isomerization of cis-decalin into trans-decalin,selective hydrogenation of naphthalene into either cis-or trans-decalin, and regio-selective hydrogenation of heteroatom-containing aromatic compounds such as 1-naphthol.The products of such selective reactions are specialty chemicals, monomers of advanced polymer materials such as high-performance polyesters, advanced engineering plastics,and liquid crystalline polymers,or components of advanced thermally stable aviation jet fuels for high-Mach aircraft.
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