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Ex parte RIEHM - Page 3Legal Research Home > Board of Patent Appeals and Interferences > 2000 > Ex parte RIEHM - Page 3
Appeal No. 1998-0558
Application No. 08/564,942
containing benzene and toluene and having a lower
average molecular weight relative to C alkyl
8
aromatic, and a second fraction enriched in C , alkyl
8
aromatic content relative to the effluent;
(e) subjecting at least a portion of the first
hydrocarbon-rich fraction to the contacting of step
(c); and
(f) recovering at least one C , alkyl aromatic
8
product from the second fraction.
32. A process for isomerizing a C , alkyl aromatic
8
hydrocarbon-containing feedstock comprising the
steps of:
(a) providing a catalyst including at least
one metal component;
(b) activating the catalyst;
(c) contacting the feedstock in at least
one isomerization zone with the catalyst
and being effective to promote C , alkyl
8
benzene isomerization at isomerization
conditions in the presence of hydrogen at
isomerization conditions to isomerize at
least a portion of the C alkyl aromatic
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hydrocarbons and to produce an effluent;
(d) separating the effluent to form a
hydrogen-rich fraction, a first hydro-
carbon-rich fraction containing benzene and
toluene and having a lower average
molecular weight relative to C alkyl
8
aromatic, and a second fraction enriched in
C alkyl aromatic content relative to the
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3
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