Role of the zeolite in the hydrogenolysis of C/sub 2/ and C/sub 3/ hydrocarbons on RuNaY catalysts

Journal Article · Sat Feb 01 04:00:00 EST 1986 · J. Catal.; (United States)

OSTI ID:5231153

Sajkowski, D J; Lee, J Y; Schwank, J; Tian, Y; Goodwin, Jr, J G

The catalytic properties for the hydrogenolysis of ethane, propane, and cyclopropane of a series of highly dispersed RuNaY catalysts have been investigated. These catalysts have activities and selectivities for ethane and propane hydrogenolysis similar to other supported ruthenium catalysts. However, the activity of the RuNaY for cyclopropane hydrogenolysis is much higher than that of Ru on conventional oxide supports, while the selectivities remain in a range expected for well-dispersed ruthenium. The increase in activity for the RuNaY catalysts is due mainly to the presence of highly dispersed Ru particles made possible by the zeolite support. A destabilization of the cyclopropane ring by the electrostatic field of the zeolite, however, does not seem to contribute significantly to the observed rate increase. It appears that the ring opening of cyclopropane and the hydrogenolysis of cyclopropane to ethane and methane have a common intermediate, the formation of which is rate determining for both reactions. The discovery that on Ru the ring opening of cyclopropane is structure sensitive is surprising since this reaction is generally considered as a classic example for structure insensitivity. 34 references.

• Research Organization: Univ. of Michigan, Ann Arbor (USA)
• DOE Contract Number: FG22-83PC60805
• OSTI ID: 5231153
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 97:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALKALI METALS
ALKANES
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CYCLOALKANES
ELEMENTS
ETHANE
HYDROCARBONS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
METALS
MINERALS
ORGANIC COMPOUNDS
PLATINUM METALS
PROPANE
REACTION KINETICS
REFORMER PROCESSES
RUTHENIUM
SODIUM
TRANSITION ELEMENTS
ZEOLITES