Role of Lewis acid centers in the initial stages of n-hexane cracking over high-silica zeolites

Journal Article · Mon Feb 01 00:00:00 EST 1988 · Kinet. Catal. (Engl. Transl.); (United States)

OSTI ID:7044588

Zholobenko, V L; Kustov, L M; Borovkov, V Yu; Kazanskii, B V

The role of Lewis (L) and Broensted (B) acid centers on the H-form of high-silica zeolite in n-hexane cracking has been studied. Active centers were identified by IR spectroscopy in diffusely scattered light. It was established that increasing the L-center concentration in dehydroxylating the H form increases the yield of C/sub 1/-C/sub 2/ paraffins and hydrogen. It was concluded that the role of L centers is to initiate cracking by dehydrogenation or by cleavage of methane from paraffin molecules. The B centers take part in the subsequent conversions of the olefins thus formed.

• Research Organization: N. D. Zelinskii Institute of Organic Chemistry, Moscow (USSR)
• OSTI ID: 7044588
• Journal Information: Kinet. Catal. (Engl. Transl.); (United States), Vol. 28:4; Other Information: Translated from Kinet. Katal; 28: No. 4, 965-969(Jul-Aug 1987)
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
HEXANE
HETEROGENEOUS CATALYSIS
LEWIS ACIDS
CATALYTIC EFFECTS
ZEOLITES
ALKANES
ALKENES
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTION YIELD
DEHYDROGENATION
HYDROGEN
INFRARED SPECTRA
MATERIALS TESTING
METHANE
MORDENITE
SILICA
TEMPERATURE DEPENDENCE
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
NONMETALS
ORGANIC COMPOUNDS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
SILICATE MINERALS
SILICON COMPOUNDS
SILICON OXIDES
SPECTRA
TESTING
THERMOCHEMICAL PROCESSES
YIELDS
400201* - Chemical & Physicochemical Properties