Production of tertiary alkyl ether using improved zeolite catalyst

Patent · Tue Jul 06 04:00:00 EDT 1993

OSTI ID:6364060

Bell, W K; Haag, R O

A process is described for reducing the formation of olefinic oligomer by-products and improving tertiary ether selectivity in the production of high octane alkyl tertiary alkyl ether employing acid zeolite beta catalyst particles having alpha value greater than 300, comprising: steaming or hydrothermally treating said zeolite catalyst particles at elevated temperature to provide treated acid zeolite beta catalyst particles having a reduced alpha value of less than 300; and contacting alkanol and a hydrocarbon feed stream rich in iso-olefins with said steamed or hydrothermally treated catalyst particles under iso-olefin etherification conditions sufficient to provide at least 70 weight percent conversion of said iso-olefins, whereby a product containing at least 95 weight percent of said alkyl tertiary alkyl ether is produced while the formation of olefinic oligomer-by-product is not more than 5 weight percent.

• Assignee: Mobil Oil Corp., Fairfax, VA (United States)
• Patent Number(s): A; US 5225609
• Application Number: PPN: US 7-808496
• OSTI ID: 6364060
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
100200* -- Synthetic Fuels-- Production-- (1990-)
ADDITIVES
ALKENES
BY-PRODUCTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL PREPARATION
ETHERS
FUEL ADDITIVES
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
SILICATE MINERALS
STEAM
SYNTHESIS
ZEOLITES