Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1977-09-14
1979-02-13
O'Keefe, Veronica
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260674A, C07C 1506, C07C 1508, C07C 1524
Patent
active
041395719
ABSTRACT:
An improved C.sub.8 alkyl aromatic hydrocarbon isomerization process comprising the steps of (1) contacting the feedstock with an isomerization catalytic composite in the presence of hydrogen at isomerization conditions to isomerize at least a portion of the C.sub.8 alkyl aromatic hydrocarbons and to produce an effluent; (2) separating the effluent to form a hydrogen-rich gaseous fraction, a first hydrocarbon-rich fraction containing toluene and having a lower average molecular weight relative to C.sub.8 alkyl aromatic content, and a second fraction enriched in C.sub.8 alkyl aromatic content relative to the effluent; provided that at least a portion of the first hydrocarbon-rich fraction is subjected to the contacting of step (1); and (3) recovering at least one C.sub.8 alkyl aromatic product from the second fraction. Improved yields of specific desired C.sub.8 hydrocarbon isomers and more efficient and complete C.sub.8 alkyl aromatic isomerization are among the benefits obtained.
REFERENCES:
patent: 3553276 (1971-01-01), Berger et al.
Atlantic Richfield Company
O'Keefe Veronica
Uxa Frank J.
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