Process for para-ethyltoluene dehydrogenation

Patent · Tue Jun 03 04:00:00 EDT 1986

OSTI ID:5416482

Chu, C C

A process is described of dehydrogenating para-ethyltoluene to selectively form para-methylstyrene comprising contacting to para-ethyltoluene under dehydrogenation reaction conditions with a catalyst composition comprising: (a) from about 30% to 60% by weight of iron oxide, calculated as ferric oxide; (b) from about 13% to 48% by weight of a potassium compound, calculated as potassium oxide; and (c) from about 0% to 5% by weight of a chromium compound, calculated as chromic oxide. The improvement is described comprising dehydrogenating the para-ethyltoluene with a catalyst composition comprising, in addition to the components (a), (b) and (c), a modifying component (d) capable of rendering the para-methylstyrene-containing dehydrogenation reaction effluent especially resistant to the subsequent formation of popcorn polymers when the dehydrogenation of para-ethyltoluene is conducted over the modified catalyst, the modifying component (d) being a bismuth compound present to the extent of from about 1% to 20% by weight of the catalyst composition, calculated as bismuth trioxide.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4593134
• OSTI ID: 5416482
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKALI METAL COMPOUNDS
ALKYLATED AROMATICS
AROMATICS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DEHYDROGENATION
HYDROCARBONS
IRON COMPOUNDS
IRON OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYMERS
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
QUANTITY RATIO
STYRENE
TRANSITION ELEMENT COMPOUNDS