Iso-olefin production

Patent · Tue Aug 10 04:00:00 EDT 1993

OSTI ID:6315636

Haag, W O; Harandi, M N; Owen, H

A process is described for producing an iso-olefin with high selectivity, comprising catalytically producing a first composition comprising at least one normal-olefin of at least 4 carbon atoms in a first product stream, by passing a feed in the vapor phase, over a first catalyst composition, at a temperature of 850 to 1,150 F, a WHSV of 0.5 to 20 and a pressure of 0 to 150 psig, wherein the first catalyst composition comprises ZSM-5 or ZSM-12, wherein the feed comprises an aliphatic and in which the aliphatic contains 5 to 20 carbon atoms; and increasing the iso-olefin content of the first composition, with substantially no oligomerization to heavier molecules, by producing a second composition, wherein said second composition is produced by contacting the normal-olefin with a second catalyst composition comprising ZSM-23, under a second set of conditions which include a temperature within the range of from about 700 F to about 1,150 F.

• Assignee: Mobil Oil Corp., Fairfax, VA (United States)
• Patent Number(s): US 5234576; A
• Application Number: PPN: US 7-738371
• OSTI ID: 6315636
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKENES
CATALYSTS
CATALYTIC EFFECTS
FLUIDS
GASES
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
ISOMERS
MATERIALS
MEDIUM PRESSURE
MINERALS
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
SILICATE MINERALS
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
VAPORS
ZEOLITES