Process for para-ethyltoluene dehydrogenation
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
- Resource Relation:
- Patent File Date: Filed date 14 Sep 1984
- Country of Publication:
- United States
- Language:
- English
Similar Records
Conception, birth and infancy of a major new monomer - mobil PMS
Water gas shift process
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AROMATICS
DEHYDROGENATION
BISMUTH OXIDES
CATALYSTS
CHROMIUM OXIDES
IRON OXIDES
POLYMERS
POTASSIUM OXIDES
QUANTITY RATIO
STYRENE
ALKALI METAL COMPOUNDS
ALKYLATED AROMATICS
BISMUTH COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
HYDROCARBONS
IRON COMPOUNDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
020500* - Petroleum- Products & By-Products
400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)