Disproportionation mechanism study of probing by n-propylbenzene

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Journal of Catalysis; (United States)

DOI:https://doi.org/10.1016/0021-9517(92)90191-J· OSTI ID:7241892

Tsai, Tsengchang; Wang, Ikai ^[1]

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1. Tsing-Hua Univ., Hsinchu (Taiwan)

Disproportionation of n-propylbenzene is proposed as a method of exploring the intrinsic reaction mechanisms and internal pore systems of zeolites. It was found that the reaction mechanism depends on the internal pore structure. From the distribution of dipropylbenzene isomers, the reaction mechanisms of both monomolecular and bimolecular reactions are elucidated. Only the zeolites with 12-membered rings and open pore structures undergo the bimolecular reaction mechanisms. The selectivity of dipropylbenzene ring isomers is product shape selective with respect to the size of the zeolite pore opening. Zeolites with bimolecular reaction mechanism exhibit higher disproportionation selectivity and catalytic stability than those with monomelecular reaction mechanism. It was determined that Zeolite beta has very open internal pore space and a loose structure.

• OSTI ID: 7241892
• Journal Information: Journal of Catalysis; (United States), Journal Name: Journal of Catalysis; (United States) Vol. 133:1; ISSN 0021-9517; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400 -- Petroleum-- Processing
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKYLATED AROMATICS
AROMATICS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CRYSTAL STRUCTURE
DISSOCIATION
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MATERIALS
MICROSTRUCTURE
MINERALS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POROSITY
PROCESSING
REACTION KINETICS
REFINING
SILICATE MINERALS
STABILITY
ZEOLITES