Rare-earth catalysts for carbon-carbon linkages of olefins: Cyclic oligomerization of ethylene

Journal Article · Thu Oct 01 00:00:00 EDT 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90169-I· OSTI ID:7151627

Keim, W; Meltzow, W; Chen, Z ^[1]; Huang, Z ^[2]; Shen, Z ^[3]

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1. Technical Univ. Aachen (Germany)
2. Fudan Univ., Shanghai (China)
3. Zhejiang Univ., Hangzhou (China)

A novel cyclo-oligomerization of ethene to alkylcyclopropanes, alkylcyclopentanes, and alkylcyclohexanes using a Ziegler-Natta type catalyst consisting of rare earth salts such as YCl{sub 3}, LaCl{sub 3}, CeCl{sub 3}, PrCl{sub 3} NdCl{sub 3}, SmCl{sub 3}, GdCl{sub 3}, HoCl{sub 3} ErCl{sub 3}, YbCl{sub 3}, LuCl{sub 3} combined with EtAlCl{sub 2} is described. The addition of carbon monoxide or isonitriles is essential. The C{sub 6}-oligomers consist of n-propylcyclopropane and methylcyclopentane. The C{sub 8}-oligomers include n-pentylcyclopropane, n-propylcyclopentane, 1,1-methylethylcyclopentane, and ethylcyclohexane. The C{sub 10}-oligomers embrace n-heptylcyclopropane, n-pentylcyclopentane, 1-1-methylbutylcyclopentane, 1,1-ethylpropylcyclopentane, and n-butylcyclohexane. When the reaction is carried out with rare earth salts and Et{sub 2}-AlCl or Et{sub 3}Al, only open-chain oligomers are obtained. There is no significant influence observed on product selectivity using other rare earth salts. Only the activity is affected. To understand the products formed a metallacycloalkane mechanism is proposed.

• OSTI ID: 7151627
• Journal Information: Journal of Catalysis; (United States), Vol. 137:2; ISSN 0021-9517
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
CHLORIDES
CATALYTIC EFFECTS
ETHYLENE
POLYMERIZATION
RARE EARTH COMPOUNDS
ADDITIVES
ALUMINIUM CHLORIDES
CARBON MONOXIDE
CATALYSTS
CERIUM CHLORIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CYCLOALKANES
CYCLOALKENES
ERBIUM CHLORIDES
GADOLINIUM CHLORIDES
HOLMIUM CHLORIDES
LANTHANUM CHLORIDES
LUTETIUM CHLORIDES
NEODYMIUM CHLORIDES
NITRILES
ORGANOMETALLIC COMPOUNDS
PRASEODYMIUM CHLORIDES
SAMARIUM CHLORIDES
SYNTHESIS
YTTERBIUM CHLORIDES
YTTRIUM CHLORIDES
ALKANES
ALKENES
ALUMINIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CERIUM COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
ERBIUM COMPOUNDS
GADOLINIUM COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HOLMIUM COMPOUNDS
HYDROCARBONS
KINETICS
LANTHANUM COMPOUNDS
LUTETIUM COMPOUNDS
NEODYMIUM COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PRASEODYMIUM COMPOUNDS
REACTION KINETICS
SAMARIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YIELDS
YTTERBIUM COMPOUNDS
YTTRIUM COMPOUNDS
020400* - Petroleum- Processing