Back to results
US 4,039,600 AGranted
Conversion of synthesis gas to aromatic hydrocarbons
AssigneeMobil Oil Corporation
InventorClarence D. Chang
Life of this patent
Estimating the term…
Abstract
Synthesis gas, a mixture comprising carbon monoxide and hydrogen, is converted to a product comprising methanol and unreacted carbon monoxide, possibly with hydrogen; the mixture is partially converted by carbonylation to a mixture comprising acetic acid, methanol and methyl acetate; and this mixture is converted to a hydrocarbon product rich in aromatic hydrocarbons by use of a high silica to alumina ratio, limited constraint index, zeolite such as a ZSM-5 zeolite.
Claims8
A process of converting carbon monoxide to gasoline boiling range aromatic hydrocarbons comprising:
- A. reacting carbon monoxide and hydrogen at about 450.degree. to 750.degree. F. in contact with a methanol synthesis catalyst to produce a product comprising methanol and carbon monoxide;
- B. reacting said methanol and said carbon monoxide at about 300.degree. to 800.degree. F. in contact with a carbonylation catalyst to produce a product comprising methanol and acetic acid;
- and
- C. converting said methanol and said acetic acid at about 500.degree. to 1200.degree. F. in contact with an aromatizing catalyst comprising a zeolite having a silica to alumina ratio of at least 12 and a constraint index of 1 to 12 to produce a product comprising normally liquid hydrocarbons the major portion of which are a conjunct mixture of C.sub.6 and C.sub.10 mono-cyclic aromatics.
1 more element
Dependencies are inferred from the claim text.