Process for para-ethyltoluene dehydrogenation

Patent · Tue Dec 09 04:00:00 EST 1986

OSTI ID:6970995

Chu, C C

This patent describes a process of dehydrogenating para-ethyltoluene to selectively form para-methylstyrene comprising contacting the para-ethyltoluene under dehydrogenation reaction conditions with a catalyst composition consisting essentially of: (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 described here is, wherein the process is conducted with a catalyst composition consisting essentially of, in addition to the components (a), (b) and (c), a modifying component (d) capable of enhancing the conversion of para-ethyltoluene when the modified catalyst is used to provide the preferential formation of para-methylstyrene from para-ethyltoluene. The modifying component (d) is a magnesium compound present to the extent of from about 1% to 15% by weight of the catalyst composition, calculated as magnesium oxide.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4628137
• OSTI ID: 6970995
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKYLATED AROMATICS
AROMATICS
CATALYSTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DEHYDROGENATION
HYDROCARBONS
IRON COMPOUNDS
IRON OXIDES
KINETICS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM OXIDES
QUANTITY RATIO
REACTION KINETICS
STYRENE
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS